commit ca8a532054edb81b04c1bc8c17a1af1302c95d3b
Author: Mike Causer <mcauser@gmail.com>
Date:   Sat Feb 24 02:38:02 2018 +1100

    Initial commit

diff --git a/LICENSE.txt b/LICENSE.txt
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--- /dev/null
+++ b/LICENSE.txt
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+MIT License
+
+Copyright (c) 2017 Waveshare
+Copyright (c) 2018 Mike Causer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
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+++ b/README.md
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+# MicroPython Waveshare e-Paper
+
+MicroPython drivers for various Waveshare e-Paper displays, based on the original Waveshare Raspberry Pi examples found in the [wiki](https://www.waveshare.com/wiki/Main_Page).
+
+![demo](docs/demo.jpg)
+
+| Waveshare e-Paper Module                                                                  | Colors               | Grey Level | Resolution px | Display mm     | Outline mm    | Partial Refresh | Full Refresh | Interface | Pi Header | Controller | Display                                                                                                                                              |
+| ----------------------------------------------------------------------------------------- | -------------------- |:----------:|:-------------:|:--------------:|:-------------:|:---------------:|:------------:|:---------:|:---------:|:-----------|:----------------------------------------------------------------------------------------------------------------------------------------------------:|
+| [1.54inch e-Paper Module](https://www.waveshare.com/wiki/1.54inch_e-Paper_Module)         | Black, White         | 2          | 200 × 200     | 27.60 × 27.60  | 48.0 × 33.0   | 0.3             | 2            | SPI       | No        | ?          | [GDEH0154D27](http://www.eink-display.com/new-1-54-inch-partial-refresh-bi-stable-e0154a05-e-paper-display-electronic-paper-screen-gdeh0154d27.html) |
+| [1.54inch e-Paper Module (B)](https://www.waveshare.com/wiki/1.54inch_e-Paper_Module_(B)) | Black, White, Red    | 2          | 200 × 200     | 27.60 × 27.60  | 48.0 × 33.0   | N/A             | 8            | SPI       | No        | ?          | [GDEW0154Z04](http://www.eink-display.com/1-54-inch-3-color-ultra-low-power-consumption-e-paper-display-screen-spi-interface-gdew0154z04.html)       |
+| [1.54inch e-Paper Module (C)](https://www.waveshare.com/wiki/1.54inch_e-Paper_Module_(C)) | Black, White, Yellow | 2          | 152 × 152     | 27.51 × 27.51  | 48.0 × 33.0   | N/A             | 27           | SPI       | No        | ?          | [GDEW0154C39](http://www.eink-display.com/new-1-54-inch-bwy-three-colors-e-ink-e-paper-display-panel-black-write-and-yellow-gdew0154c39.html)        |
+| [2.13inch e-Paper HAT](https://www.waveshare.com/wiki/2.13inch_e-Paper_HAT)               | Black, White         | 2          | 250 × 122     | 48.55 × 23.71  | 65.0 × 30.2   | 0.3             | 2            | SPI       | Yes       | IL3895     | [GDEH0213B1](http://www.eink-display.com/new-2-13-inch-partial-refresh-e-paper-display-250x122-electronic-paper-screen-gdeh0213b1.html)              |
+| [2.13inch e-Paper HAT (B)](https://www.waveshare.com/wiki/2.13inch_e-Paper_HAT_(B))       | Black, White, Red    | 2          | 212 × 104     | 48.55 × 23.71  | 65.0 × 30.2   | N/A             | 15           | SPI       | Yes       | ?          | [GDEW0213Z16](http://www.eink-display.com/2-13-inch-three-color-low-power-e-paper-display-electronic-paper-screen-gdew0213z16.html)                  |
+| [2.13inch e-Paper HAT (C)](https://www.waveshare.com/wiki/2.13inch_e-Paper_HAT_(C))       | Black, White, Yellow | 2          | 212 × 104     | 48.55 × 23.71  | 65.0 × 30.2   | N/A             | 15           | SPI       | Yes       | ?          | [GDEW0213C38](http://www.eink-display.com/new-2-13-inch-bwy-three-colors-e-ink-e-paper-display-panel-black-write-and-yellow-gdew0213c38.html)        |
+| [2.7inch e-Paper HAT](https://www.waveshare.com/wiki/2.7inch_e-Paper_HAT)                 | Black, White         | 2          | 264 × 176     | 57.29 × 38.19  | 85.0 × 56.0   | N/A             | 6            | SPI       | Yes       | ?          | [GDEW027W3](http://www.eink-display.com/2-7-inch-ultra-low-power-consumption-high-contrast-small-size-electronic-paper-display-gdew027w3.html)       |
+| [2.7inch e-Paper HAT (B)](https://www.waveshare.com/wiki/2.7inch_e-Paper_HAT_(B))         | Black, White, Red    | 2          | 264 × 176     | 57.29 × 38.19  | 85.0 × 56.0   | N/A             | 15           | SPI       | Yes       | ?          | [GDEW027C44](http://www.eink-display.com/2-7-inch-three-color-low-power-consumption-bi-stable-electronic-paper-screen-gdew027c44.html)               |
+| [2.9inch e-Paper Module](https://www.waveshare.com/wiki/2.9inch_e-Paper_Module)           | Black, White         | 2          | 296 × 128     | 66.89 × 29.05  | 89.5 × 38.0   | 0.3             | 2            | SPI       | No        | IL3820     | [GDEH029A1](http://www.eink-display.com/2-9-inch-partial-update-bi-stable-e-paper-display-electronic-paper-screen-gdeh029a1.html)                    |
+| [2.9inch e-Paper Module (B)](https://www.waveshare.com/wiki/2.9inch_e-Paper_Module_(B))   | Black, White, Red    | 2          | 296 × 128     | 66.89 × 29.05  | 89.5 × 38.0   | N/A             | 15           | SPI       | No        | IL3820?    | [GDEW029Z10](http://www.eink-display.com/2-9-inch-three-color-bi-stable-e-paper-display-electronic-paper-screen-gdew029z10.html)                     |
+| [2.9inch e-Paper Module (C)](https://www.waveshare.com/wiki/2.9inch_e-Paper_Module_(C))   | Black, White, Yellow | 2          | 296 × 128     | 66.89 × 29.05  | 89.5 × 38.0   | N/A             | 15           | SPI       | No        | IL3820?    | [GDEW029C32](http://www.eink-display.com/new-2-9-inch-bwy-three-colors-e-ink-e-paper-display-panel-black-write-and-yellow-gdew029c32.html)           |
+| [4.2inch e-Paper Module](https://www.waveshare.com/wiki/4.2inch_e-Paper_Module)           | Black, White         | 2          | 400 × 300     | 84.80 × 63.60  | 103.0 × 78.5  | N/A             | 4            | SPI       | No        | ?          | [GDEW042T2](http://www.eink-display.com/4-2-inch-ultra-low-power-consumption-400x300-resolution-electronic-paper-screen-gdew042t2.html)              |
+| [4.2inch e-Paper Module (B)](https://www.waveshare.com/wiki/4.2inch_e-Paper_Module_(B))   | Black, White, Red    | 2          | 400 × 300     | 84.80 × 63.60  | 103.0 × 78.5  | N/A             | 15           | SPI       | No        | ?          | [GDEW042Z15](http://www.eink-display.com/4-2-inch-three-color-bi-stable-electronic-paper-screen-gdew042z15.html)                                     |
+| [4.2inch e-Paper Module (C)](https://www.waveshare.com/wiki/4.2inch_e-Paper_Module_(C))   | Black, White, Yellow | 2          | 400 × 300     | 84.80 × 63.60  | 103.0 × 78.5  | N/A             | 15           | SPI       | No        | ?          | [GDEW042C37](http://www.eink-display.com/new-4-2-inch-bwy-three-colors-e-ink-e-paper-display-panel-black-write-and-yellow-gdew042c37.html)           |
+| [4.3inch e-Paper UART Module](https://www.waveshare.com/wiki/4.3inch_e-Paper_UART_Module) | Black, White         | 4          | 800 × 600     | 88.00 × 66.00  | 118.0 × 75.0  | N/A             | 1.5          | UART      | No        | ?          | [GDE043A2](http://www.eink-display.com/4-3-inch-low-power-e-paper-display-electronic-paper-screen-gde043a2.html)                                     |
+| [7.5inch e-Paper HAT](https://www.waveshare.com/wiki/7.5inch_e-Paper_HAT)                 | Black, White         | 2          | 600 × 384     | 163.20 × 97.92 | 170.2 × 111.2 | N/A             | 6            | SPI       | Yes       | ?          | [GDEW075T8](http://www.eink-display.com/7-5-inch-large-size-ultra-wide-viewing-angle-bi-stable-e-paper-display-e-paper-monitor-gdew075t8.html)       |
+| [7.5inch e-Paper HAT (B)](https://www.waveshare.com/wiki/7.5inch_e-Paper_HAT_(B))         | Black, White, Red    | 2          | 170.2 × 111.2 | 163.20 × 97.92 | 170.2 × 111.2 | N/A             | 31           | SPI       | Yes       | ?          | [GDEW075Z09](http://www.eink-display.com/7-5-inch-large-size-three-color-bi-stable-e-paper-display-e-paper-monitor-gdew075z09.html)                  |
+| [7.5inch e-Paper HAT (C)](https://www.waveshare.com/wiki/7.5inch_e-Paper_HAT_(C))         | Black, White, Yellow | 2          | 640 × 384     | 163.20 × 97.92 | 170.2 × 111.2 | N/A             | 31           | SPI       | Yes       | ?          | [GDEW075C21](http://www.eink-display.com/new-7-5-inch-bwy-three-colors-e-ink-e-paper-display-panel-black-write-and-yellow-gdew075c21.html)           |
+
+## Links
+
+* [Waveshare Wiki](https://www.waveshare.com/wiki/Main_Page)
+* [micropython.org](http://micropython.org)
+* [Docs on framebuf](http://docs.micropython.org/en/latest/pyboard/library/framebuf.html)
diff --git a/docs/demo.jpg b/docs/demo.jpg
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Binary files /dev/null and b/docs/demo.jpg differ
diff --git a/epaper1in54.py b/epaper1in54.py
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+++ b/epaper1in54.py
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+# MicroPython library for Waveshare 1.54" B/W e-paper display GDEH0154D27
+
+from micropython import const
+from time import sleep_ms
+import ustruct
+
+# Display resolution
+EPD_WIDTH  = const(200)
+EPD_HEIGHT = const(200)
+
+# Display commands
+DRIVER_OUTPUT_CONTROL                = const(0x01)
+BOOSTER_SOFT_START_CONTROL           = const(0x0C)
+#GATE_SCAN_START_POSITION             = const(0x0F)
+DEEP_SLEEP_MODE                      = const(0x10)
+DATA_ENTRY_MODE_SETTING              = const(0x11)
+#SW_RESET                             = const(0x12)
+#TEMPERATURE_SENSOR_CONTROL           = const(0x1A)
+MASTER_ACTIVATION                    = const(0x20)
+#DISPLAY_UPDATE_CONTROL_1             = const(0x21)
+DISPLAY_UPDATE_CONTROL_2             = const(0x22)
+WRITE_RAM                            = const(0x24)
+WRITE_VCOM_REGISTER                  = const(0x2C)
+WRITE_LUT_REGISTER                   = const(0x32)
+SET_DUMMY_LINE_PERIOD                = const(0x3A)
+SET_GATE_TIME                        = const(0x3B) # not in datasheet
+#BORDER_WAVEFORM_CONTROL              = const(0x3C)
+SET_RAM_X_ADDRESS_START_END_POSITION = const(0x44)
+SET_RAM_Y_ADDRESS_START_END_POSITION = const(0x45)
+SET_RAM_X_ADDRESS_COUNTER            = const(0x4E)
+SET_RAM_Y_ADDRESS_COUNTER            = const(0x4F)
+TERMINATE_FRAME_READ_WRITE           = const(0xFF) # aka NOOP
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+
+    LUT_FULL_UPDATE    = bytearray(b'\x02\x02\x01\x11\x12\x12\x22\x22\x66\x69\x69\x59\x58\x99\x99\x88\x00\x00\x00\x00\xF8\xB4\x13\x51\x35\x51\x51\x19\x01\x00')
+    LUT_PARTIAL_UPDATE = bytearray(b'\x10\x18\x18\x08\x18\x18\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x13\x14\x44\x12\x00\x00\x00\x00\x00\x00')
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(DRIVER_OUTPUT_CONTROL)
+        self._data(bytearray([(EPD_HEIGHT - 1) & 0xFF]))
+        self._data(bytearray([((EPD_HEIGHT - 1) >> 8) & 0xFF]))
+        self._data(bytearray([0x00])) # GD = 0 SM = 0 TB = 0
+        self._command(BOOSTER_SOFT_START_CONTROL, b'\xD7\xD6\x9D')
+        self._command(WRITE_VCOM_REGISTER, b'\xA8') # VCOM 7C
+        self._command(SET_DUMMY_LINE_PERIOD, b'\x1A') # 4 dummy lines per gate
+        self._command(SET_GATE_TIME, b'\x08') # 2us per line
+        self._command(DATA_ENTRY_MODE_SETTING, b'\x03') # X increment Y increment
+        self.set_lut(self.LUT_FULL_UPDATE)
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    def set_lut(self, lut):
+        self._command(WRITE_LUT_REGISTER, lut)
+
+    # put an image in the frame memory
+    def set_frame_memory(self, image, x, y, w, h):
+        # x point must be the multiple of 8 or the last 3 bits will be ignored
+        x = x & 0xF8
+        w = w & 0xF8
+
+        if (x + w >= self.width):
+            x_end = self.width - 1
+        else:
+            x_end = x + w - 1
+
+        if (y + h >= self.height):
+            y_end = self.height - 1
+        else:
+            y_end = y + h - 1
+
+        self.set_memory_area(x, y, x_end, y_end)
+        self.set_memory_pointer(x, y)
+        self._command(WRITE_RAM, image)
+
+    # replace the frame memory with the specified color
+    def clear_frame_memory(self, color):
+        self.set_memory_area(0, 0, self.width - 1, self.height - 1)
+        self.set_memory_pointer(0, 0)
+        self._command(WRITE_RAM)
+        # send the color data
+        for i in range(0, self.width // 8 * self.height):
+            self._data(bytearray([color]))
+
+    # draw the current frame memory and switch to the next memory area
+    def display_frame(self):
+        self._command(DISPLAY_UPDATE_CONTROL_2, b'\xC4')
+        self._command(MASTER_ACTIVATION)
+        self._command(TERMINATE_FRAME_READ_WRITE)
+        self.wait_until_idle()
+
+    # specify the memory area for data R/W
+    def set_memory_area(self, x_start, y_start, x_end, y_end):
+        self._command(SET_RAM_X_ADDRESS_START_END_POSITION)
+        # x point must be the multiple of 8 or the last 3 bits will be ignored
+        self._data(bytearray([(x_start >> 3) & 0xFF]))
+        self._data(bytearray([(x_end >> 3) & 0xFF]))
+        self._command(SET_RAM_Y_ADDRESS_START_END_POSITION, ustruct.pack("<HH", y_start, y_end))
+
+    # specify the start point for data R/W
+    def set_memory_pointer(self, x, y):
+        self._command(SET_RAM_X_ADDRESS_COUNTER)
+        # x point must be the multiple of 8 or the last 3 bits will be ignored
+        self._data(bytearray([(x >> 3) & 0xFF]))
+        self._command(SET_RAM_Y_ADDRESS_COUNTER, ustruct.pack("<H", y))
+        self.wait_until_idle()
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(DEEP_SLEEP_MODE, b'\x01') # enter deep sleep A0=1, A0=0 power on
+        self.wait_until_idle()
diff --git a/epaper1in54b.py b/epaper1in54b.py
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index 0000000..edc8a8c
--- /dev/null
+++ b/epaper1in54b.py
@@ -0,0 +1,319 @@
+# MicroPython library for Waveshare 1.54" B/W/R e-paper display GDEW0154Z04
+
+from micropython import const
+from time import sleep_ms
+import ustruct
+
+# Display resolution
+EPD_WIDTH  = const(200)
+EPD_HEIGHT = const(200)
+
+# Display commands
+PANEL_SETTING                  = const(0x00) # in datasheet, but not in cmd table
+POWER_SETTING                  = const(0x01)
+POWER_OFF                      = const(0x02)
+#POWER_OFF_SEQUENCE_SETTING     = const(0x03) # not in datasheet
+POWER_ON                       = const(0x04)
+#POWER_ON_MEASURE               = const(0x05) # not in datasheet
+BOOSTER_SOFT_START             = const(0x06)
+#DEEP_SLEEP                     = const(0x07) # not in datasheet
+DATA_START_TRANSMISSION_1      = const(0x10)
+#DATA_STOP                      = const(0x11) # not in datasheet
+DISPLAY_REFRESH                = const(0x12)
+DATA_START_TRANSMISSION_2      = const(0x13)
+VCOM_LUT                       = const(0x20) # VCOM LUT
+W2W_LUT                        = const(0x21) # White LUT
+B2W_LUT                        = const(0x22) # Black LUT
+W2B_LUT                        = const(0x23) # not in datasheet
+B2B_LUT                        = const(0x24) # not in datasheet
+LUT_RED_0                      = const(0x25) # Red VCOM LUT
+LUT_RED_1                      = const(0x26) # Red0 LUT
+LUT_RED_2                      = const(0x27) # RED1 LUT
+#LUT_RED_3                      = const(0x28) # not in datasheet
+PLL_CONTROL                    = const(0x30)
+#TEMPERATURE_SENSOR_COMMAND     = const(0x40)
+#TEMPERATURE_SENSOR_CALIBRATION = const(0x41)
+#TEMPERATURE_SENSOR_WRITE       = const(0x42)
+#TEMPERATURE_SENSOR_READ        = const(0x43)
+VCOM_AND_DATA_INTERVAL_SETTING = const(0x50)
+#LOW_POWER_DETECTION            = const(0x51) # not in datasheet
+#TCON_SETTING                   = const(0x60) # not in datasheet
+TCON_RESOLUTION                = const(0x61)
+#SOURCE_AND_GATE_START_SETTING  = const(0x62) # not in datasheet
+#GET_STATUS                     = const(0x71) # in datasheet, but not in cmd table
+#AUTO_MEASURE_VCOM              = const(0x80) # not in datasheet
+#VCOM_VALUE                     = const(0x81) # not in datasheet
+VCM_DC_SETTING_REGISTER        = const(0x82)
+#PROGRAM_MODE                   = const(0xA0) # not in datasheet
+#ACTIVE_PROGRAM                 = const(0xA1) # not in datasheet
+#READ_OTP_DATA                  = const(0xA2) # not in datasheet
+
+# Display orientation
+ROTATE_0   = const(0)
+ROTATE_90  = const(1)
+ROTATE_180 = const(2)
+ROTATE_270 = const(3)
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+        self.rotate = ROTATE_0
+
+    LUT_VCOM0 = bytearray(b'\x0E\x14\x01\x0A\x06\x04\x0A\x0A\x0F\x03\x03\x0C\x06\x0A\x00')
+    LUT_W     = bytearray(b'\x0E\x14\x01\x0A\x46\x04\x8A\x4A\x0F\x83\x43\x0C\x86\x0A\x04')
+    LUT_B     = bytearray(b'\x0E\x14\x01\x8A\x06\x04\x8A\x4A\x0F\x83\x43\x0C\x06\x4A\x04')
+    LUT_G1    = bytearray(b'\x8E\x94\x01\x8A\x06\x04\x8A\x4A\x0F\x83\x43\x0C\x06\x0A\x04')
+    LUT_G2    = LUT_G1
+    LUT_VCOM1 = bytearray(b'\x03\x1D\x01\x01\x08\x23\x37\x37\x01\x00\x00\x00\x00\x00\x00')
+    LUT_RED0  = bytearray(b'\x83\x5D\x01\x81\x48\x23\x77\x77\x01\x00\x00\x00\x00\x00\x00')
+    LUT_RED1  = LUT_VCOM1
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(POWER_SETTING, b'\x07\x00\x08\x00')
+        self._command(BOOSTER_SOFT_START, b'\x07\x07\x07')
+        self._command(POWER_ON)
+        self.wait_until_idle()
+        self._command(PANEL_SETTING, b'\xCF')
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x17') # for this panel, must be 0x17
+        self._command(PLL_CONTROL, b'\x39')
+        self._command(TCON_RESOLUTION, ustruct.pack(">BH", EPD_WIDTH, EPD_HEIGHT))
+        self._command(VCM_DC_SETTING_REGISTER, b'\x0E') # -1.4V
+        self.set_lut_bw()
+        self.set_lut_red()
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    def set_lut_bw(self):
+        self._command(VCOM_LUT, self.LUT_VCOM0) # vcom
+        self._command(W2W_LUT, self.LUT_W)      # ww --
+        self._command(B2W_LUT, self.LUT_B)      # bw r
+        self._command(W2B_LUT, self.LUT_G1)     # wb w
+        self._command(B2B_LUT, self.LUT_G2)     # bb b
+
+    def set_lut_red(self):
+        self._command(LUT_RED_0, self.LUT_VCOM1)
+        self._command(LUT_RED_1, self.LUT_RED0)
+        self._command(LUT_RED_2, self.LUT_RED1)
+
+    def display_frame(self, frame_buffer_black, frame_buffer_red):
+        if (frame_buffer_black != None):
+            self._command(DATA_START_TRANSMISSION_1)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                temp = 0x00
+                for bit in range(0, 4):
+                    if (frame_buffer_black[i] & (0x80 >> bit) != 0):
+                        temp |= 0xC0 >> (bit * 2)
+                self._data(bytearray([temp]))
+                temp = 0x00
+                for bit in range(4, 8):
+                    if (frame_buffer_black[i] & (0x80 >> bit) != 0):
+                        temp |= 0xC0 >> ((bit - 4) * 2)
+                self._data(bytearray([temp]))
+            sleep_ms(2)
+        if (frame_buffer_red != None):
+            self._command(DATA_START_TRANSMISSION_2)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer_red[i]]))
+            sleep_ms(2)
+
+        self._command(DISPLAY_REFRESH)
+        self.wait_until_idle()
+
+    def set_rotate(self, rotate):
+        if (rotate == ROTATE_0):
+            self.rotate = ROTATE_0
+            self.width = EPD_WIDTH
+            self.height = EPD_HEIGHT
+        elif (rotate == ROTATE_90):
+            self.rotate = ROTATE_90
+            self.width = EPD_HEIGHT
+            self.height = EPD_WIDTH
+        elif (rotate == ROTATE_180):
+            self.rotate = ROTATE_180
+            self.width = EPD_WIDTH
+            self.height = EPD_HEIGHT
+        elif (rotate == ROTATE_270):
+            self.rotate = ROTATE_270
+            self.width = EPD_HEIGHT
+            self.height = EPD_WIDTH
+
+    def set_pixel(self, frame_buffer, x, y, colored):
+        if (x < 0 or x >= self.width or y < 0 or y >= self.height):
+            return
+        if (self.rotate == ROTATE_0):
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_90):
+            point_temp = x
+            x = EPD_WIDTH - y
+            y = point_temp
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_180):
+            x = EPD_WIDTH - x
+            y = EPD_HEIGHT- y
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_270):
+            point_temp = x
+            x = y
+            y = EPD_HEIGHT - point_temp
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+
+    def set_absolute_pixel(self, frame_buffer, x, y, colored):
+        # To avoid display orientation effects
+        # use EPD_WIDTH instead of self.width
+        # use EPD_HEIGHT instead of self.height
+        if (x < 0 or x >= EPD_WIDTH or y < 0 or y >= EPD_HEIGHT):
+            return
+        if (colored):
+            frame_buffer[(x + y * EPD_WIDTH) // 8] &= ~(0x80 >> (x % 8))
+        else:
+            frame_buffer[(x + y * EPD_WIDTH) // 8] |= 0x80 >> (x % 8)
+
+    def display_string_at(self, frame_buffer, x, y, text, font, colored):
+        image = Image.new('1', (self.width, self.height))
+        draw = ImageDraw.Draw(image)
+        draw.text((x, y), text, font = font, fill = 255)
+        # Set buffer to value of Python Imaging Library image.
+        # Image must be in mode 1.
+        pixels = image.load()
+        for y in range(self.height):
+            for x in range(self.width):
+                # Set the bits for the column of pixels at the current position.
+                if pixels[x, y] != 0:
+                    self.set_pixel(frame_buffer, x, y, colored)
+
+    def draw_line(self, frame_buffer, x0, y0, x1, y1, colored):
+        # Bresenham algorithm
+        dx = abs(x1 - x0)
+        sx = 1 if x0 < x1 else -1
+        dy = -abs(y1 - y0)
+        sy = 1 if y0 < y1 else -1
+        err = dx + dy
+        while((x0 != x1) and (y0 != y1)):
+            self.set_pixel(frame_buffer, x0, y0 , colored)
+            if (2 * err >= dy):
+                err += dy
+                x0 += sx
+            if (2 * err <= dx):
+                err += dx
+                y0 += sy
+
+    def draw_horizontal_line(self, frame_buffer, x, y, width, colored):
+        for i in range(x, x + width):
+            self.set_pixel(frame_buffer, i, y, colored)
+
+    def draw_vertical_line(self, frame_buffer, x, y, height, colored):
+        for i in range(y, y + height):
+            self.set_pixel(frame_buffer, x, i, colored)
+
+    def draw_rectangle(self, frame_buffer, x0, y0, x1, y1, colored):
+        min_x = x0 if x1 > x0 else x1
+        max_x = x1 if x1 > x0 else x0
+        min_y = y0 if y1 > y0 else y1
+        max_y = y1 if y1 > y0 else y0
+        self.draw_horizontal_line(frame_buffer, min_x, min_y, max_x - min_x + 1, colored)
+        self.draw_horizontal_line(frame_buffer, min_x, max_y, max_x - min_x + 1, colored)
+        self.draw_vertical_line(frame_buffer, min_x, min_y, max_y - min_y + 1, colored)
+        self.draw_vertical_line(frame_buffer, max_x, min_y, max_y - min_y + 1, colored)
+
+    def draw_filled_rectangle(self, frame_buffer, x0, y0, x1, y1, colored):
+        min_x = x0 if x1 > x0 else x1
+        max_x = x1 if x1 > x0 else x0
+        min_y = y0 if y1 > y0 else y1
+        max_y = y1 if y1 > y0 else y0
+        for i in range(min_x, max_x + 1):
+            self.draw_vertical_line(frame_buffer, i, min_y, max_y - min_y + 1, colored)
+
+    def draw_circle(self, frame_buffer, x, y, radius, colored):
+        # Bresenham algorithm
+        x_pos = -radius
+        y_pos = 0
+        err = 2 - 2 * radius
+        if (x >= self.width or y >= self.height):
+            return
+        while True:
+            self.set_pixel(frame_buffer, x - x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y - y_pos, colored)
+            self.set_pixel(frame_buffer, x - x_pos, y - y_pos, colored)
+            e2 = err
+            if (e2 <= y_pos):
+                y_pos += 1
+                err += y_pos * 2 + 1
+                if(-x_pos == y_pos and e2 <= x_pos):
+                    e2 = 0
+            if (e2 > x_pos):
+                x_pos += 1
+                err += x_pos * 2 + 1
+            if x_pos > 0:
+                break
+
+    def draw_filled_circle(self, frame_buffer, x, y, radius, colored):
+        # Bresenham algorithm
+        x_pos = -radius
+        y_pos = 0
+        err = 2 - 2 * radius
+        if (x >= self.width or y >= self.height):
+            return
+        while True:
+            self.set_pixel(frame_buffer, x - x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y - y_pos, colored)
+            self.set_pixel(frame_buffer, x - x_pos, y - y_pos, colored)
+            self.draw_horizontal_line(frame_buffer, x + x_pos, y + y_pos, 2 * (-x_pos) + 1, colored)
+            self.draw_horizontal_line(frame_buffer, x + x_pos, y - y_pos, 2 * (-x_pos) + 1, colored)
+            e2 = err
+            if (e2 <= y_pos):
+                y_pos += 1
+                err += y_pos * 2 + 1
+                if(-x_pos == y_pos and e2 <= x_pos):
+                    e2 = 0
+            if (e2 > x_pos):
+                x_pos  += 1
+                err += x_pos * 2 + 1
+            if x_pos > 0:
+                break
+
+    # to wake call reset() or init()
+    def sleep(self):
+        # TODO do we need to reset these here?
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x17') # for this panel, must be 0x17
+        self._command(VCM_DC_SETTING_REGISTER, b'\x00') # to solve Vcom drop
+        self._command(POWER_SETTING, b'\x02\x00\x00\x00') # gate switch to external
+        # /TODO
+        self.wait_until_idle()
+        self._command(POWER_OFF)
diff --git a/epaper2in13.py b/epaper2in13.py
new file mode 100644
index 0000000..c5f30ef
--- /dev/null
+++ b/epaper2in13.py
@@ -0,0 +1,151 @@
+# MicroPython library for Waveshare 2.13" B/W e-paper display GDEH0213B1
+
+from micropython import const
+from time import sleep_ms
+import ustruct
+
+# Display resolution
+EPD_WIDTH  = const(128)
+EPD_HEIGHT = const(250)
+# datasheet says 250x122 (increased to 128 to be multiples of 8)
+
+# Display commands
+DRIVER_OUTPUT_CONTROL                = const(0x01)
+# Gate Driving Voltage Control       0x03
+# Source Driving voltage Control     0x04
+BOOSTER_SOFT_START_CONTROL           = const(0x0C) # not in datasheet
+#GATE_SCAN_START_POSITION             = const(0x0F) # not in datasheet
+DEEP_SLEEP_MODE                      = const(0x10)
+DATA_ENTRY_MODE_SETTING              = const(0x11)
+#SW_RESET                             = const(0x12)
+#TEMPERATURE_SENSOR_CONTROL           = const(0x1A)
+MASTER_ACTIVATION                    = const(0x20)
+#DISPLAY_UPDATE_CONTROL_1             = const(0x21)
+DISPLAY_UPDATE_CONTROL_2             = const(0x22)
+# Panel Break Detection              0x23
+WRITE_RAM                            = const(0x24)
+WRITE_VCOM_REGISTER                  = const(0x2C)
+# Status Bit Read                    0x2F
+WRITE_LUT_REGISTER                   = const(0x32)
+SET_DUMMY_LINE_PERIOD                = const(0x3A)
+SET_GATE_TIME                        = const(0x3B)
+#BORDER_WAVEFORM_CONTROL              = const(0x3C)
+SET_RAM_X_ADDRESS_START_END_POSITION = const(0x44)
+SET_RAM_Y_ADDRESS_START_END_POSITION = const(0x45)
+SET_RAM_X_ADDRESS_COUNTER            = const(0x4E)
+SET_RAM_Y_ADDRESS_COUNTER            = const(0x4F)
+TERMINATE_FRAME_READ_WRITE           = const(0xFF) # not in datasheet, aka NOOP
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+
+    LUT_FULL_UPDATE    = bytearray(b'\x22\x55\xAA\x55\xAA\x55\xAA\x11\x00\x00\x00\x00\x00\x00\x00\x00\x1E\x1E\x1E\x1E\x1E\x1E\x1E\x1E\x01\x00\x00\x00\x00\x00')
+    LUT_PARTIAL_UPDATE = bytearray(b'\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0F\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(DRIVER_OUTPUT_CONTROL)
+        self._data(bytearray([(EPD_HEIGHT - 1) & 0xFF]))
+        self._data(bytearray([((EPD_HEIGHT - 1) >> 8) & 0xFF]))
+        self._data(bytearray([0x00])) # GD = 0 SM = 0 TB = 0
+        self._command(BOOSTER_SOFT_START_CONTROL, b'\xD7\xD6\x9D')
+        self._command(WRITE_VCOM_REGISTER, b'\xA8') # VCOM 7C
+        self._command(SET_DUMMY_LINE_PERIOD, b'\x1A') # 4 dummy lines per gate
+        self._command(SET_GATE_TIME, b'\x08') # 2us per line
+        self._command(DATA_ENTRY_MODE_SETTING, b'\x03') # X increment Y increment
+        self.set_lut(self.LUT_FULL_UPDATE)
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    def set_lut(self, lut):
+        self._command(WRITE_LUT_REGISTER, lut)
+
+    # put an image in the frame memory
+    def set_frame_memory(self, image, x, y, w, h):
+        # x point must be the multiple of 8 or the last 3 bits will be ignored
+        x = x & 0xF8
+        w = w & 0xF8
+
+        if (x + w >= self.width):
+            x_end = self.width - 1
+        else:
+            x_end = x + w - 1
+
+        if (y + h >= self.height):
+            y_end = self.height - 1
+        else:
+            y_end = y + h - 1
+
+        self.set_memory_area(x, y, x_end, y_end)
+        self.set_memory_pointer(x, y)
+        self._command(WRITE_RAM, image)
+
+    # replace the frame memory with the specified color
+    def clear_frame_memory(self, color):
+        self.set_memory_area(0, 0, self.width - 1, self.height - 1)
+        self.set_memory_pointer(0, 0)
+        self._command(WRITE_RAM)
+        # send the color data
+        for i in range(0, self.width // 8 * self.height):
+            self._data(bytearray([color]))
+
+    # draw the current frame memory and switch to the next memory area
+    def display_frame(self):
+        self._command(DISPLAY_UPDATE_CONTROL_2, b'\xC4')
+        self._command(MASTER_ACTIVATION)
+        self._command(TERMINATE_FRAME_READ_WRITE)
+        self.wait_until_idle()
+
+    # specify the memory area for data R/W
+    def set_memory_area(self, x_start, y_start, x_end, y_end):
+        self._command(SET_RAM_X_ADDRESS_START_END_POSITION)
+        # x point must be the multiple of 8 or the last 3 bits will be ignored
+        self._data(bytearray([(x_start >> 3) & 0xFF]))
+        self._data(bytearray([(x_end >> 3) & 0xFF]))
+        self._command(SET_RAM_Y_ADDRESS_START_END_POSITION, ustruct.pack("<HH", y_start, y_end))
+
+    # specify the start point for data R/W
+    def set_memory_pointer(self, x, y):
+        self._command(SET_RAM_X_ADDRESS_COUNTER)
+        # x point must be the multiple of 8 or the last 3 bits will be ignored
+        self._data(bytearray([(x >> 3) & 0xFF]))
+        self._command(SET_RAM_Y_ADDRESS_COUNTER, ustruct.pack("<H", y))
+        self.wait_until_idle()
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(DEEP_SLEEP_MODE)
+        self.wait_until_idle()
diff --git a/epaper2in13b.py b/epaper2in13b.py
new file mode 100644
index 0000000..23d2373
--- /dev/null
+++ b/epaper2in13b.py
@@ -0,0 +1,281 @@
+# MicroPython library for Waveshare 2.13" B/W/R e-paper display GDEW0213Z16
+
+from micropython import const
+from time import sleep_ms
+import ustruct
+
+# Display resolution
+EPD_WIDTH  = const(104)
+EPD_HEIGHT = const(212)
+
+# Display commands
+PANEL_SETTING                  = const(0x00)
+POWER_SETTING                  = const(0x01)
+POWER_OFF                      = const(0x02)
+#POWER_OFF_SEQUENCE_SETTING     = const(0x03)
+POWER_ON                       = const(0x04)
+#POWER_ON_MEASURE               = const(0x05)
+BOOSTER_SOFT_START             = const(0x06)
+#DEEP_SLEEP                     = const(0x07)
+DATA_START_TRANSMISSION_1      = const(0x10)
+#DATA_STOP                      = const(0x11)
+DISPLAY_REFRESH                = const(0x12)
+DATA_START_TRANSMISSION_2      = const(0x13)
+#VCOM_LUT                       = const(0x20) # VCOM LUT(LUTC) (45-byte command, structure of bytes 2~7 repeated)
+#W2W_LUT                        = const(0x21) # W2W LUT (LUTWW) (43-byte command, structure of bytes 2~7 repeated 7 times)
+#B2W_LUT                        = const(0x22) # B2W LUT (LUTBW / LUTR) (43-byte command, structure of bytes 2~7 repeated 7 times)
+#W2B_LUT                        = const(0x23) # W2B LUT (LUTWB / LUTW) (43-byte command, structure of bytes 2~7 repeated 7 times)
+#B2B_LUT                        = const(0x24) # B2B LUT (LUTBB / LUTB) (43-byte command, sturcture of bytes 2~7 repeated 7 times)
+#PLL_CONTROL                    = const(0x30)
+#TEMPERATURE_SENSOR_CALIBRATION = const(0x40)
+#TEMPERATURE_SENSOR_SELECTION   = const(0x41)
+#TEMPERATURE_SENSOR_WRITE       = const(0x42)
+#TEMPERATURE_SENSOR_READ        = const(0x43)
+VCOM_AND_DATA_INTERVAL_SETTING = const(0x50)
+#LOW_POWER_DETECTION            = const(0x51)
+#TCON_SETTING                   = const(0x60)
+RESOLUTION_SETTING             = const(0x61)
+#GET_STATUS                     = const(0x71) # partial update status, i2c status, data received, power status, busy
+#AUTO_MEASURE_VCOM              = const(0x80)
+#VCOM_VALUE                     = const(0x81)
+VCM_DC_SETTING                 = const(0x82)
+#PARTIAL_WINDOW                 = const(0x90)
+#PARTIAL_IN                     = const(0x91)
+#PARTIAL_OUT                    = const(0x92)
+#PROGRAM_MODE                   = const(0xA0)
+#ACTIVE_PROGRAM                 = const(0xA1)
+#READ_OTP_DATA                  = const(0xA2)
+#POWER_SAVING                   = const(0xE3)
+
+# Display orientation
+ROTATE_0   = const(0)
+ROTATE_90  = const(1)
+ROTATE_180 = const(2)
+ROTATE_270 = const(3)
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+        self.rotate = ROTATE_0
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(BOOSTER_SOFT_START, b'\x17\x17\x17')
+        self._command(POWER_ON)
+        self.wait_until_idle()
+        self._command(PANEL_SETTING, b'\x8F') # (128x296, LUT from OTP, B/W/R, scan up, shift right, booster on)
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x37')
+        self._command(RESOLUTION_SETTING, ustruct.pack(">BH", EPD_WIDTH, EPD_HEIGHT))
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    def display_frame(self, frame_buffer_black, frame_buffer_red):
+        if (frame_buffer_black != None):
+            self._command(DATA_START_TRANSMISSION_1)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer_black[i]]))
+            sleep_ms(2)
+        if (frame_buffer_red != None):
+            self._command(DATA_START_TRANSMISSION_2)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer_red[i]]))
+            sleep_ms(2)
+
+        self._command(DISPLAY_REFRESH)
+        self.wait_until_idle()
+
+    def set_rotate(self, rotate):
+        if (rotate == ROTATE_0):
+            self.rotate = ROTATE_0
+            self.width = epdif.EPD_WIDTH
+            self.height = epdif.EPD_HEIGHT
+        elif (rotate == ROTATE_90):
+            self.rotate = ROTATE_90
+            self.width = epdif.EPD_HEIGHT
+            self.height = epdif.EPD_WIDTH
+        elif (rotate == ROTATE_180):
+            self.rotate = ROTATE_180
+            self.width = epdif.EPD_WIDTH
+            self.height = epdif.EPD_HEIGHT
+        elif (rotate == ROTATE_270):
+            self.rotate = ROTATE_270
+            self.width = epdif.EPD_HEIGHT
+            self.height = epdif.EPD_WIDTH
+
+    def set_pixel(self, frame_buffer, x, y, colored):
+        if (x < 0 or x >= self.width or y < 0 or y >= self.height):
+            return
+        if (self.rotate == ROTATE_0):
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_90):
+            point_temp = x
+            x = epdif.EPD_WIDTH - y
+            y = point_temp
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_180):
+            x = epdif.EPD_WIDTH - x
+            y = epdif.EPD_HEIGHT- y
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_270):
+            point_temp = x
+            x = y
+            y = epdif.EPD_HEIGHT - point_temp
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+
+    def set_absolute_pixel(self, frame_buffer, x, y, colored):
+        # To avoid display orientation effects
+        # use EPD_WIDTH instead of self.width
+        # use EPD_HEIGHT instead of self.height
+        if (x < 0 or x >= EPD_WIDTH or y < 0 or y >= EPD_HEIGHT):
+            return
+        if (colored):
+            frame_buffer[(x + y * EPD_WIDTH) // 8] &= ~(0x80 >> (x % 8))
+        else:
+            frame_buffer[(x + y * EPD_WIDTH) // 8] |= 0x80 >> (x % 8)
+
+    def draw_string_at(self, frame_buffer, x, y, text, font, colored):
+        image = Image.new('1', (self.width, self.height))
+        draw = ImageDraw.Draw(image)
+        draw.text((x, y), text, font = font, fill = 255)
+        # Set buffer to value of Python Imaging Library image.
+        # Image must be in mode 1.
+        pixels = image.load()
+        for y in range(self.height):
+            for x in range(self.width):
+                # Set the bits for the column of pixels at the current position.
+                if pixels[x, y] != 0:
+                    self.set_pixel(frame_buffer, x, y, colored)
+
+    def draw_line(self, frame_buffer, x0, y0, x1, y1, colored):
+        # Bresenham algorithm
+        dx = abs(x1 - x0)
+        sx = 1 if x0 < x1 else -1
+        dy = -abs(y1 - y0)
+        sy = 1 if y0 < y1 else -1
+        err = dx + dy
+        while((x0 != x1) and (y0 != y1)):
+            self.set_pixel(frame_buffer, x0, y0 , colored)
+            if (2 * err >= dy):
+                err += dy
+                x0 += sx
+            if (2 * err <= dx):
+                err += dx
+                y0 += sy
+
+    def draw_horizontal_line(self, frame_buffer, x, y, width, colored):
+        for i in range(x, x + width):
+            self.set_pixel(frame_buffer, i, y, colored)
+
+    def draw_vertical_line(self, frame_buffer, x, y, height, colored):
+        for i in range(y, y + height):
+            self.set_pixel(frame_buffer, x, i, colored)
+
+    def draw_rectangle(self, frame_buffer, x0, y0, x1, y1, colored):
+        min_x = x0 if x1 > x0 else x1
+        max_x = x1 if x1 > x0 else x0
+        min_y = y0 if y1 > y0 else y1
+        max_y = y1 if y1 > y0 else y0
+        self.draw_horizontal_line(frame_buffer, min_x, min_y, max_x - min_x + 1, colored)
+        self.draw_horizontal_line(frame_buffer, min_x, max_y, max_x - min_x + 1, colored)
+        self.draw_vertical_line(frame_buffer, min_x, min_y, max_y - min_y + 1, colored)
+        self.draw_vertical_line(frame_buffer, max_x, min_y, max_y - min_y + 1, colored)
+
+    def draw_filled_rectangle(self, frame_buffer, x0, y0, x1, y1, colored):
+        min_x = x0 if x1 > x0 else x1
+        max_x = x1 if x1 > x0 else x0
+        min_y = y0 if y1 > y0 else y1
+        max_y = y1 if y1 > y0 else y0
+        for i in range(min_x, max_x + 1):
+            self.draw_vertical_line(frame_buffer, i, min_y, max_y - min_y + 1, colored)
+
+    def draw_circle(self, frame_buffer, x, y, radius, colored):
+        # Bresenham algorithm
+        x_pos = -radius
+        y_pos = 0
+        err = 2 - 2 * radius
+        if (x >= self.width or y >= self.height):
+            return
+        while True:
+            self.set_pixel(frame_buffer, x - x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y - y_pos, colored)
+            self.set_pixel(frame_buffer, x - x_pos, y - y_pos, colored)
+            e2 = err
+            if (e2 <= y_pos):
+                y_pos += 1
+                err += y_pos * 2 + 1
+                if(-x_pos == y_pos and e2 <= x_pos):
+                    e2 = 0
+            if (e2 > x_pos):
+                x_pos += 1
+                err += x_pos * 2 + 1
+            if x_pos > 0:
+                break
+
+    def draw_filled_circle(self, frame_buffer, x, y, radius, colored):
+        # Bresenham algorithm
+        x_pos = -radius
+        y_pos = 0
+        err = 2 - 2 * radius
+        if (x >= self.width or y >= self.height):
+            return
+        while True:
+            self.set_pixel(frame_buffer, x - x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y - y_pos, colored)
+            self.set_pixel(frame_buffer, x - x_pos, y - y_pos, colored)
+            self.draw_horizontal_line(frame_buffer, x + x_pos, y + y_pos, 2 * (-x_pos) + 1, colored)
+            self.draw_horizontal_line(frame_buffer, x + x_pos, y - y_pos, 2 * (-x_pos) + 1, colored)
+            e2 = err
+            if (e2 <= y_pos):
+                y_pos += 1
+                err += y_pos * 2 + 1
+                if(-x_pos == y_pos and e2 <= x_pos):
+                    e2 = 0
+            if (e2 > x_pos):
+                x_pos  += 1
+                err += x_pos * 2 + 1
+            if x_pos > 0:
+                break
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x37')
+        self._command(VCM_DC_SETTING_REGISTER, b'\x00') # to solve Vcom drop
+        self._command(POWER_SETTING, b'\x02\x00\x00\x00') # gate switch to external
+        self.wait_until_idle()
+        self._command(POWER_OFF)
diff --git a/epaper2in7.py b/epaper2in7.py
new file mode 100644
index 0000000..ae34d74
--- /dev/null
+++ b/epaper2in7.py
@@ -0,0 +1,139 @@
+# MicroPython library for Waveshare 2.7" B/W e-paper display GDEW027W3
+
+from micropython import const
+from time import sleep_ms
+
+# Display resolution
+EPD_WIDTH  = const(176)
+EPD_HEIGHT = const(264)
+
+# Display commands
+PANEL_SETTING                     = const(0x00)
+POWER_SETTING                     = const(0x01)
+#POWER_OFF                         = const(0x02)
+#POWER_OFF_SEQUENCE_SETTING        = const(0x03)
+POWER_ON                          = const(0x04)
+#POWER_ON_MEASURE                  = const(0x05)
+BOOSTER_SOFT_START                = const(0x06)
+DEEP_SLEEP                        = const(0x07)
+DATA_START_TRANSMISSION_1         = const(0x10)
+#DATA_STOP                         = const(0x11)
+DISPLAY_REFRESH                   = const(0x12)
+DATA_START_TRANSMISSION_2         = const(0x13) # not in datasheet
+#PARTIAL_DATA_START_TRANSMISSION_1 = const(0x14)
+#PARTIAL_DATA_START_TRANSMISSION_2 = const(0x15)
+PARTIAL_DISPLAY_REFRESH           = const(0x16)
+LUT_FOR_VCOM                      = const(0x20) # LUT for VCOM(LUT1)
+LUT_WHITE_TO_WHITE                = const(0x21) # White to white LUT (LUTWW)
+LUT_BLACK_TO_WHITE                = const(0x22) # Black to white LUT (LUTBW/LUTR)
+LUT_WHITE_TO_BLACK                = const(0x23) # White to Black LUT (LUTWB/LUTW)
+LUT_BLACK_TO_BLACK                = const(0x24) # Black to Black LUT (LUTBB/LUTB)
+PLL_CONTROL                       = const(0x30)
+#TEMPERATURE_SENSOR_COMMAND        = const(0x40)
+#TEMPERATURE_SENSOR_CALIBRATION    = const(0x41)
+#TEMPERATURE_SENSOR_WRITE          = const(0x42)
+#TEMPERATURE_SENSOR_READ           = const(0x43)
+#VCOM_AND_DATA_INTERVAL_SETTING    = const(0x50)
+#LOW_POWER_DETECTION               = const(0x51)
+#TCON_SETTING                      = const(0x60)
+#TCON_RESOLUTION                   = const(0x61)
+#SOURCE_AND_GATE_START_SETTING     = const(0x62)
+#GET_STATUS                        = const(0x71)
+#AUTO_MEASURE_VCOM                 = const(0x80)
+#VCOM_VALUE                        = const(0x81)
+VCM_DC_SETTING_REGISTER           = const(0x82)
+#PROGRAM_MODE                      = const(0xA0)
+#ACTIVE_PROGRAM                    = const(0xA1)
+#READ_OTP_DATA                     = const(0xA2)
+POWER_OPTIMIZATION                = const(0xF8) # Power optimization in flow diagram
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+
+    LUT_VCOM_DC = bytearray(b'\x00\x00\x00\x0F\x0F\x00\x00\x05\x00\x32\x32\x00\x00\x02\x00\x0F\x0F\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+    LUT_WW      = bytearray(b'\x50\x0F\x0F\x00\x00\x05\x60\x32\x32\x00\x00\x02\xA0\x0F\x0F\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00') # R21H
+    LUT_BW      = LUT_BW # R22H r
+    LUT_BB      = bytearray(b'\xA0\x0F\x0F\x00\x00\x05\x60\x32\x32\x00\x00\x02\x50\x0F\x0F\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00') # R24H b
+    LUT_WB      = LUT_BB # R23H w
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(POWER_SETTING, b'\x03\x00\x2B\x2B\x09') # VDS_EN VDG_EN, VCOM_HV VGHL_LV[1] VGHL_LV[0], VDH, VDL, VDHR
+        self._command(BOOSTER_SOFT_START, b'\x07\x07\x17')
+        self._command(POWER_OPTIMIZATION, b'\x60\xA5')
+        self._command(POWER_OPTIMIZATION, b'\x89\xA5')
+        self._command(POWER_OPTIMIZATION, b'\x90\x00')
+        self._command(POWER_OPTIMIZATION, b'\x93\x2A')
+        self._command(POWER_OPTIMIZATION, b'\xA0\xA5')
+        self._command(POWER_OPTIMIZATION, b'\xA1\x00')
+        self._command(POWER_OPTIMIZATION, b'\x73\x41')
+        self._command(PARTIAL_DISPLAY_REFRESH, b'\x00')
+        self._command(POWER_ON)
+        self.wait_until_idle()
+        self._command(PANEL_SETTING, b'\xAF') # KW-BF   KWR-AF    BWROTP 0f
+        self._command(PLL_CONTROL, b'\x3A') # 3A 100HZ   29 150Hz 39 200HZ    31 171HZ
+        self._command(VCM_DC_SETTING_REGISTER, b'\x12')
+        sleep_ms(2)
+        self.set_lut()
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    def set_lut(self):
+        self._command(LUT_FOR_VCOM, self.LUT_VCOM_DC)  # vcom
+        self._command(LUT_WHITE_TO_WHITE, self.LUT_WW) # ww --
+        self._command(LUT_BLACK_TO_WHITE, self.LUT_BW) # bw r
+        self._command(LUT_WHITE_TO_BLACK, self.LUT_BB) # wb w
+        self._command(LUT_BLACK_TO_BLACK, self.LUT_WB) # bb b
+
+    # draw the current frame memory
+    def display_frame(self, frame_buffer):
+        if (frame_buffer != None):
+            self._command(DATA_START_TRANSMISSION_1)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([0xFF]))
+            sleep_ms(2)
+            self._command(DATA_START_TRANSMISSION_2)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer[i]]))
+            sleep_ms(2)
+            self._command(DISPLAY_REFRESH)
+            self.wait_until_idle()
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(DEEP_SLEEP, b'\xA5')
diff --git a/epaper2in7b.py b/epaper2in7b.py
new file mode 100644
index 0000000..e6764d8
--- /dev/null
+++ b/epaper2in7b.py
@@ -0,0 +1,302 @@
+# MicroPython library for Waveshare 2.7" B/W/R e-paper display GDEW027C44
+
+from micropython import const
+from time import sleep_ms
+import ustruct
+
+# Display resolution
+EPD_WIDTH  = const(176)
+EPD_HEIGHT = const(264)
+
+# Display commands
+PANEL_SETTING                     = const(0x00)
+POWER_SETTING                     = const(0x01)
+#POWER_OFF                         = const(0x02)
+#POWER_OFF_SEQUENCE_SETTING        = const(0x03)
+POWER_ON                          = const(0x04)
+#POWER_ON_MEASURE                  = const(0x05)
+BOOSTER_SOFT_START                = const(0x06)
+DEEP_SLEEP                        = const(0x07)
+#DATA_START_TRANSMISSION_1         = const(0x10)
+#DATA_STOP                         = const(0x11)
+DISPLAY_REFRESH                   = const(0x12)
+DATA_START_TRANSMISSION_2         = const(0x13)
+#PARTIAL_DATA_START_TRANSMISSION_1 = const(0x14)
+#PARTIAL_DATA_START_TRANSMISSION_2 = const(0x15)
+PARTIAL_DISPLAY_REFRESH           = const(0x16)
+LUT_FOR_VCOM                      = const(0x20)
+LUT_WHITE_TO_WHITE                = const(0x21)
+LUT_BLACK_TO_WHITE                = const(0x22)
+LUT_WHITE_TO_BLACK                = const(0x23)
+LUT_BLACK_TO_BLACK                = const(0x24)
+PLL_CONTROL                       = const(0x30)
+#TEMPERATURE_SENSOR_COMMAND        = const(0x40)
+#TEMPERATURE_SENSOR_CALIBRATION    = const(0x41)
+#TEMPERATURE_SENSOR_WRITE          = const(0x42)
+#TEMPERATURE_SENSOR_READ           = const(0x43)
+VCOM_AND_DATA_INTERVAL_SETTING    = const(0x50)
+#LOW_POWER_DETECTION               = const(0x51)
+#TCON_SETTING                      = const(0x60)
+TCON_RESOLUTION                   = const(0x61)
+#SOURCE_AND_GATE_START_SETTING     = const(0x62)
+#GET_STATUS                        = const(0x71)
+#AUTO_MEASURE_VCOM                 = const(0x80)
+#VCOM_VALUE                        = const(0x81)
+VCM_DC_SETTING_REGISTER           = const(0x82)
+#PROGRAM_MODE                      = const(0xA0)
+#ACTIVE_PROGRAM                    = const(0xA1)
+#READ_OTP_DATA                     = const(0xA2)
+POWER_OPTIMIZATION                = const(0xF8) # Power optimization in flow diagram
+
+# Display orientation
+ROTATE_0   = const(0)
+ROTATE_90  = const(1)
+ROTATE_180 = const(2)
+ROTATE_270 = const(3)
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+        self.rotate = ROTATE_0
+
+    LUT_VCOM_DC = bytearray(b'\x00\x00\x00\x1A\x1A\x00\x00\x01\x00\x0A\x0A\x00\x00\x08\x00\x0E\x01\x0E\x01\x10\x00\x0A\x0A\x00\x00\x08\x00\x04\x10\x00\x00\x05\x00\x03\x0E\x00\x00\x0A\x00\x23\x00\x00\x00\x01')
+    LUT_WW      = bytearray(b'\x90\x1A\x1A\x00\x00\x01\x40\x0A\x0A\x00\x00\x08\x84\x0E\x01\x0E\x01\x10\x80\x0A\x0A\x00\x00\x08\x00\x04\x10\x00\x00\x05\x00\x03\x0E\x00\x00\x0A\x00\x23\x00\x00\x00\x01') # R21H
+    LUT_BW      = bytearray(b'\xA0\x1A\x1A\x00\x00\x01\x00\x0A\x0A\x00\x00\x08\x84\x0E\x01\x0E\x01\x10\x90\x0A\x0A\x00\x00\x08\xB0\x04\x10\x00\x00\x05\xB0\x03\x0E\x00\x00\x0A\xC0\x23\x00\x00\x00\x01') # R22H r
+    LUT_BB      = LUT_WW # R23H w
+    LUT_WB      = bytearray(b'\x90\x1A\x1A\x00\x00\x01\x20\x0A\x0A\x00\x00\x08\x84\x0E\x01\x0E\x01\x10\x10\x0A\x0A\x00\x00\x08\x00\x04\x10\x00\x00\x05\x00\x03\x0E\x00\x00\x0A\x00\x23\x00\x00\x00\x01') # R24H b
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(POWER_ON)
+        self.wait_until_idle()
+        self._command(PANEL_SETTING, b'\xAF') # (296x160, LUT from register, B/W/R run both LU1 LU2, scan up, shift right, bootster on) KW-BF   KWR-AF    BWROTP 0f
+        self._command(PLL_CONTROL, b'\x3A') # 3A 100HZ   29 150Hz 39 200HZ    31 171HZ
+        self._command(POWER_SETTING, b'\x03\x00\x2b\x2b\x09') # VDS_EN VDG_EN, VCOM_HV VGHL_LV[1] VGHL_LV[0], VDH, VDL, VDHR
+        self._command(BOOSTER_SOFT_START, b'\x07\x07\x17')
+        self._command(POWER_OPTIMIZATION, b'\x60\xA5')
+        self._command(POWER_OPTIMIZATION, b'\x89\xA5')
+        self._command(POWER_OPTIMIZATION, b'\x90\x00')
+        self._command(POWER_OPTIMIZATION, b'\x93\x2A')
+        self._command(POWER_OPTIMIZATION, b'\x73\x41')
+        self._command(VCM_DC_SETTING_REGISTER, b'\x12')
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x87') # define by OTP
+        self.set_lut()
+        self._command(PARTIAL_DISPLAY_REFRESH, b'\x00')
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    def set_lut(self):
+        self._command(LUT_FOR_VCOM, self.LUT_VCOM_DC)  # vcom
+        self._command(LUT_WHITE_TO_WHITE, self.LUT_WW) # ww --
+        self._command(LUT_BLACK_TO_WHITE, self.LUT_BW) # bw r
+        self._command(LUT_WHITE_TO_BLACK, self.LUT_BB) # wb w
+        self._command(LUT_BLACK_TO_BLACK, self.LUT_WB) # bb b
+
+    def display_frame(self, frame_buffer_black, frame_buffer_red):
+        self._command(TCON_RESOLUTION, ustruct.pack(">HH", EPD_WIDTH, EPD_HEIGHT))
+
+        if (frame_buffer_black != None):
+            self._command(DATA_START_TRANSMISSION_1)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer_black[i]]))
+            sleep_ms(2)
+        if (frame_buffer_red != None):
+            self._command(DATA_START_TRANSMISSION_2)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer_red[i]]))
+            sleep_ms(2)
+
+        self._command(DISPLAY_REFRESH)
+        self.wait_until_idle()
+
+    def set_rotate(self, rotate):
+        if (rotate == ROTATE_0):
+            self.rotate = ROTATE_0
+            self.width = EPD_WIDTH
+            self.height = EPD_HEIGHT
+        elif (rotate == ROTATE_90):
+            self.rotate = ROTATE_90
+            self.width = EPD_HEIGHT
+            self.height = EPD_WIDTH
+        elif (rotate == ROTATE_180):
+            self.rotate = ROTATE_180
+            self.width = EPD_WIDTH
+            self.height = EPD_HEIGHT
+        elif (rotate == ROTATE_270):
+            self.rotate = ROTATE_270
+            self.width = EPD_HEIGHT
+            self.height = EPD_WIDTH
+
+    def set_pixel(self, frame_buffer, x, y, colored):
+        if (x < 0 or x >= self.width or y < 0 or y >= self.height):
+            return
+        if (self.rotate == ROTATE_0):
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_90):
+            point_temp = x
+            x = EPD_WIDTH - y
+            y = point_temp
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_180):
+            x = EPD_WIDTH - x
+            y = EPD_HEIGHT- y
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_270):
+            point_temp = x
+            x = y
+            y = EPD_HEIGHT - point_temp
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+
+    def set_absolute_pixel(self, frame_buffer, x, y, colored):
+        # To avoid display orientation effects
+        # use EPD_WIDTH instead of self.width
+        # use EPD_HEIGHT instead of self.height
+        if (x < 0 or x >= EPD_WIDTH or y < 0 or y >= EPD_HEIGHT):
+            return
+        if (colored):
+            frame_buffer[(x + y * EPD_WIDTH) // 8] |= 0x80 >> (x % 8)
+        else:
+            frame_buffer[(x + y * EPD_WIDTH) // 8] &= ~(0x80 >> (x % 8))
+
+    def draw_string_at(self, frame_buffer, x, y, text, font, colored):
+        image = Image.new('1', (self.width, self.height))
+        draw = ImageDraw.Draw(image)
+        draw.text((x, y), text, font = font, fill = 255)
+        # Set buffer to value of Python Imaging Library image.
+        # Image must be in mode 1.
+        pixels = image.load()
+        for y in range(self.height):
+            for x in range(self.width):
+                # Set the bits for the column of pixels at the current position.
+                if pixels[x, y] != 0:
+                    self.set_pixel(frame_buffer, x, y, colored)
+
+    def draw_line(self, frame_buffer, x0, y0, x1, y1, colored):
+        # Bresenham algorithm
+        dx = abs(x1 - x0)
+        sx = 1 if x0 < x1 else -1
+        dy = -abs(y1 - y0)
+        sy = 1 if y0 < y1 else -1
+        err = dx + dy
+        while((x0 != x1) and (y0 != y1)):
+            self.set_pixel(frame_buffer, x0, y0 , colored)
+            if (2 * err >= dy):
+                err += dy
+                x0 += sx
+            if (2 * err <= dx):
+                err += dx
+                y0 += sy
+
+    def draw_horizontal_line(self, frame_buffer, x, y, width, colored):
+        for i in range(x, x + width):
+            self.set_pixel(frame_buffer, i, y, colored)
+
+    def draw_vertical_line(self, frame_buffer, x, y, height, colored):
+        for i in range(y, y + height):
+            self.set_pixel(frame_buffer, x, i, colored)
+
+    def draw_rectangle(self, frame_buffer, x0, y0, x1, y1, colored):
+        min_x = x0 if x1 > x0 else x1
+        max_x = x1 if x1 > x0 else x0
+        min_y = y0 if y1 > y0 else y1
+        max_y = y1 if y1 > y0 else y0
+        self.draw_horizontal_line(frame_buffer, min_x, min_y, max_x - min_x + 1, colored)
+        self.draw_horizontal_line(frame_buffer, min_x, max_y, max_x - min_x + 1, colored)
+        self.draw_vertical_line(frame_buffer, min_x, min_y, max_y - min_y + 1, colored)
+        self.draw_vertical_line(frame_buffer, max_x, min_y, max_y - min_y + 1, colored)
+
+    def draw_filled_rectangle(self, frame_buffer, x0, y0, x1, y1, colored):
+        min_x = x0 if x1 > x0 else x1
+        max_x = x1 if x1 > x0 else x0
+        min_y = y0 if y1 > y0 else y1
+        max_y = y1 if y1 > y0 else y0
+        for i in range(min_x, max_x + 1):
+            self.draw_vertical_line(frame_buffer, i, min_y, max_y - min_y + 1, colored)
+
+    def draw_circle(self, frame_buffer, x, y, radius, colored):
+        # Bresenham algorithm
+        x_pos = -radius
+        y_pos = 0
+        err = 2 - 2 * radius
+        if (x >= self.width or y >= self.height):
+            return
+        while True:
+            self.set_pixel(frame_buffer, x - x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y - y_pos, colored)
+            self.set_pixel(frame_buffer, x - x_pos, y - y_pos, colored)
+            e2 = err
+            if (e2 <= y_pos):
+                y_pos += 1
+                err += y_pos * 2 + 1
+                if(-x_pos == y_pos and e2 <= x_pos):
+                    e2 = 0
+            if (e2 > x_pos):
+                x_pos += 1
+                err += x_pos * 2 + 1
+            if x_pos > 0:
+                break
+
+    def draw_filled_circle(self, frame_buffer, x, y, radius, colored):
+        # Bresenham algorithm
+        x_pos = -radius
+        y_pos = 0
+        err = 2 - 2 * radius
+        if (x >= self.width or y >= self.height):
+            return
+        while True:
+            self.set_pixel(frame_buffer, x - x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y - y_pos, colored)
+            self.set_pixel(frame_buffer, x - x_pos, y - y_pos, colored)
+            self.draw_horizontal_line(frame_buffer, x + x_pos, y + y_pos, 2 * (-x_pos) + 1, colored);
+            self.draw_horizontal_line(frame_buffer, x + x_pos, y - y_pos, 2 * (-x_pos) + 1, colored);
+            e2 = err
+            if (e2 <= y_pos):
+                y_pos += 1
+                err += y_pos * 2 + 1
+                if(-x_pos == y_pos and e2 <= x_pos):
+                    e2 = 0
+            if (e2 > x_pos):
+                x_pos  += 1
+                err += x_pos * 2 + 1
+            if x_pos > 0:
+                break
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(DEEP_SLEEP, b'\xA5')
diff --git a/epaper2in9.py b/epaper2in9.py
new file mode 100644
index 0000000..aca6396
--- /dev/null
+++ b/epaper2in9.py
@@ -0,0 +1,149 @@
+# MicroPython library for Waveshare 2.9" B/W e-paper display GDEH029A1
+
+from micropython import const
+from time import sleep_ms
+import ustruct
+
+# Display resolution
+EPD_WIDTH  = const(128)
+EPD_HEIGHT = const(296)
+
+# Display commands
+DRIVER_OUTPUT_CONTROL                = const(0x01)
+BOOSTER_SOFT_START_CONTROL           = const(0x0C)
+#GATE_SCAN_START_POSITION             = const(0x0F)
+DEEP_SLEEP_MODE                      = const(0x10)
+DATA_ENTRY_MODE_SETTING              = const(0x11)
+#SW_RESET                             = const(0x12)
+#TEMPERATURE_SENSOR_CONTROL           = const(0x1A)
+MASTER_ACTIVATION                    = const(0x20)
+#DISPLAY_UPDATE_CONTROL_1             = const(0x21)
+DISPLAY_UPDATE_CONTROL_2             = const(0x22)
+WRITE_RAM                            = const(0x24)
+WRITE_VCOM_REGISTER                  = const(0x2C)
+WRITE_LUT_REGISTER                   = const(0x32)
+SET_DUMMY_LINE_PERIOD                = const(0x3A)
+SET_GATE_TIME                        = const(0x3B)
+#BORDER_WAVEFORM_CONTROL              = const(0x3C)
+SET_RAM_X_ADDRESS_START_END_POSITION = const(0x44)
+SET_RAM_Y_ADDRESS_START_END_POSITION = const(0x45)
+SET_RAM_X_ADDRESS_COUNTER            = const(0x4E)
+SET_RAM_Y_ADDRESS_COUNTER            = const(0x4F)
+TERMINATE_FRAME_READ_WRITE           = const(0xFF)
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+
+    # 30 bytes (look up tables)
+    # original waveshare example
+    LUT_FULL_UPDATE    = bytearray(b'\x02\x02\x01\x11\x12\x12\x22\x22\x66\x69\x69\x59\x58\x99\x99\x88\x00\x00\x00\x00\xF8\xB4\x13\x51\x35\x51\x51\x19\x01\x00')
+    LUT_PARTIAL_UPDATE = bytearray(b'\x10\x18\x18\x08\x18\x18\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x13\x14\x44\x12\x00\x00\x00\x00\x00\x00')
+
+    # https://github.com/ZinggJM/GxEPD/blob/master/GxGDEH029A1/GxGDEH029A1.cpp
+    #LUT_FULL_UPDATE    = bytearray(b'\x50\xAA\x55\xAA\x11\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\xFF\x1F\x00\x00\x00\x00\x00\x00\x00')
+    #LUT_PARTIAL_UPDATE = bytearray(b'\x10\x18\x18\x08\x18\x18\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x13\x14\x44\x12\x00\x00\x00\x00\x00\x00')
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(DRIVER_OUTPUT_CONTROL, ustruct.pack("<HB", EPD_HEIGHT-1, 0x00))
+        self._command(BOOSTER_SOFT_START_CONTROL, b'\xD7\xD6\x9D')
+        self._command(WRITE_VCOM_REGISTER, b'\xA8') # VCOM 7C
+        self._command(SET_DUMMY_LINE_PERIOD, b'\x1A') # 4 dummy lines per gate
+        self._command(SET_GATE_TIME, b'\x08') # 2us per line
+        self._command(DATA_ENTRY_MODE_SETTING, b'\x03') # X increment Y increment
+        self.set_lut(self.LUT_FULL_UPDATE)
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    def set_lut(self, lut):
+        self._command(WRITE_LUT_REGISTER, lut)
+
+    # put an image in the frame memory
+    def set_frame_memory(self, image, x, y, w, h):
+        # x point must be the multiple of 8 or the last 3 bits will be ignored
+        x = x & 0xF8
+        w = w & 0xF8
+
+        if (x + w >= self.width):
+            x_end = self.width - 1
+        else:
+            x_end = x + w - 1
+
+        if (y + h >= self.height):
+            y_end = self.height - 1
+        else:
+            y_end = y + h - 1
+
+        self.set_memory_area(x, y, x_end, y_end)
+        self.set_memory_pointer(x, y)
+        self._command(WRITE_RAM, image)
+
+    # replace the frame memory with the specified color
+    def clear_frame_memory(self, color):
+        self.set_memory_area(0, 0, self.width - 1, self.height - 1)
+        self.set_memory_pointer(0, 0)
+        self._command(WRITE_RAM)
+        # send the color data
+        for i in range(0, self.width // 8 * self.height):
+            self._data(bytearray([color]))
+
+    # draw the current frame memory and switch to the next memory area
+    def display_frame(self):
+        self._command(DISPLAY_UPDATE_CONTROL_2, b'\xC4')
+        self._command(MASTER_ACTIVATION)
+        self._command(TERMINATE_FRAME_READ_WRITE)
+        self.wait_until_idle()
+
+    # specify the memory area for data R/W
+    def set_memory_area(self, x_start, y_start, x_end, y_end):
+        self._command(SET_RAM_X_ADDRESS_START_END_POSITION)
+        # x point must be the multiple of 8 or the last 3 bits will be ignored
+        self._data(bytearray([(x_start >> 3) & 0xFF]))
+        self._data(bytearray([(x_end >> 3) & 0xFF]))
+        self._command(SET_RAM_Y_ADDRESS_START_END_POSITION, ustruct.pack("<HH", y_start, y_end))
+
+    # specify the start point for data R/W
+    def set_memory_pointer(self, x, y):
+        self._command(SET_RAM_X_ADDRESS_COUNTER)
+        # x point must be the multiple of 8 or the last 3 bits will be ignored
+        self._data(bytearray([(x >> 3) & 0xFF]))
+        self._command(SET_RAM_Y_ADDRESS_COUNTER, ustruct.pack("<H", y))
+        self.wait_until_idle()
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(DEEP_SLEEP_MODE)
+        self.wait_until_idle()
diff --git a/epaper2in9b.py b/epaper2in9b.py
new file mode 100644
index 0000000..bc223ed
--- /dev/null
+++ b/epaper2in9b.py
@@ -0,0 +1,277 @@
+# MicroPython library for Waveshare 2.9" B/W/R e-paper display GDEW029Z10
+
+from micropython import const
+from time import sleep_ms
+import ustruct
+
+# Display resolution
+EPD_WIDTH  = const(128)
+EPD_HEIGHT = const(296)
+
+# Display commands
+PANEL_SETTING                  = const(0x00)
+POWER_SETTING                  = const(0x01)
+POWER_OFF                      = const(0x02)
+#POWER_OFF_SEQUENCE_SETTING     = const(0x03)
+POWER_ON                       = const(0x04)
+#POWER_ON_MEASURE               = const(0x05)
+BOOSTER_SOFT_START             = const(0x06)
+#DEEP_SLEEP                     = const(0x07)
+DATA_START_TRANSMISSION_1      = const(0x10)
+#DATA_STOP                      = const(0x11)
+DISPLAY_REFRESH                = const(0x12)
+DATA_START_TRANSMISSION_2      = const(0x13)
+#PLL_CONTROL                    = const(0x30)
+#TEMPERATURE_SENSOR_COMMAND     = const(0x40)
+#TEMPERATURE_SENSOR_CALIBRATION = const(0x41)
+#TEMPERATURE_SENSOR_WRITE       = const(0x42)
+#TEMPERATURE_SENSOR_READ        = const(0x43)
+VCOM_AND_DATA_INTERVAL_SETTING = const(0x50)
+#LOW_POWER_DETECTION            = const(0x51)
+#TCON_SETTING                   = const(0x60)
+TCON_RESOLUTION                = const(0x61)
+#GET_STATUS                     = const(0x71)
+#AUTO_MEASURE_VCOM              = const(0x80)
+#VCOM_VALUE                     = const(0x81)
+VCM_DC_SETTING_REGISTER        = const(0x82)
+#PARTIAL_WINDOW                 = const(0x90)
+#PARTIAL_IN                     = const(0x91)
+#PARTIAL_OUT                    = const(0x92)
+#PROGRAM_MODE                   = const(0xA0)
+#ACTIVE_PROGRAM                 = const(0xA1)
+#READ_OTP_DATA                  = const(0xA2)
+#POWER_SAVING                   = const(0xE3)
+
+# Display orientation
+ROTATE_0   = const(0)
+ROTATE_90  = const(1)
+ROTATE_180 = const(2)
+ROTATE_270 = const(3)
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+        self.rotate = ROTATE_0
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(BOOSTER_SOFT_START, b'\x17\x17\x17')
+        self._command(POWER_ON)
+        self.wait_until_idle()
+        self._command(PANEL_SETTING, b'\x8F')
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x77')
+        self._command(TCON_RESOLUTION, ustruct.pack(">BH", EPD_WIDTH, EPD_HEIGHT))
+        self._command(VCM_DC_SETTING_REGISTER, b'\x0A')
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    def display_frame(self, frame_buffer_black, frame_buffer_red):
+        if (frame_buffer_black != None):
+            self._command(DATA_START_TRANSMISSION_1)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer_black[i]]))
+            sleep_ms(2)
+        if (frame_buffer_red != None):
+            self._command(DATA_START_TRANSMISSION_2)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer_red[i]]))
+            sleep_ms(2)
+
+        self._command(DISPLAY_REFRESH)
+        self.wait_until_idle()
+
+    def set_rotate(self, rotate):
+        if (rotate == ROTATE_0):
+            self.rotate = ROTATE_0
+            self.width = epdif.EPD_WIDTH
+            self.height = epdif.EPD_HEIGHT
+        elif (rotate == ROTATE_90):
+            self.rotate = ROTATE_90
+            self.width = epdif.EPD_HEIGHT
+            self.height = epdif.EPD_WIDTH
+        elif (rotate == ROTATE_180):
+            self.rotate = ROTATE_180
+            self.width = epdif.EPD_WIDTH
+            self.height = epdif.EPD_HEIGHT
+        elif (rotate == ROTATE_270):
+            self.rotate = ROTATE_270
+            self.width = epdif.EPD_HEIGHT
+            self.height = epdif.EPD_WIDTH
+
+    def set_pixel(self, frame_buffer, x, y, colored):
+        if (x < 0 or x >= self.width or y < 0 or y >= self.height):
+            return
+        if (self.rotate == ROTATE_0):
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_90):
+            point_temp = x
+            x = epdif.EPD_WIDTH - y
+            y = point_temp
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_180):
+            x = epdif.EPD_WIDTH - x
+            y = epdif.EPD_HEIGHT- y
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+        elif (self.rotate == ROTATE_270):
+            point_temp = x
+            x = y
+            y = epdif.EPD_HEIGHT - point_temp
+            self.set_absolute_pixel(frame_buffer, x, y, colored)
+
+    def set_absolute_pixel(self, frame_buffer, x, y, colored):
+        # To avoid display orientation effects
+        # use EPD_WIDTH instead of self.width
+        # use EPD_HEIGHT instead of self.height
+        if (x < 0 or x >= EPD_WIDTH or y < 0 or y >= EPD_HEIGHT):
+            return
+        if (colored):
+            frame_buffer[(x + y * EPD_WIDTH) // 8] &= ~(0x80 >> (x % 8))
+        else:
+            frame_buffer[(x + y * EPD_WIDTH) // 8] |= 0x80 >> (x % 8)
+
+    def draw_string_at(self, frame_buffer, x, y, text, font, colored):
+        image = Image.new('1', (self.width, self.height))
+        draw = ImageDraw.Draw(image)
+        draw.text((x, y), text, font = font, fill = 255)
+        # Set buffer to value of Python Imaging Library image.
+        # Image must be in mode 1.
+        pixels = image.load()
+        for y in range(self.height):
+            for x in range(self.width):
+                # Set the bits for the column of pixels at the current position.
+                if pixels[x, y] != 0:
+                    self.set_pixel(frame_buffer, x, y, colored)
+
+    def draw_line(self, frame_buffer, x0, y0, x1, y1, colored):
+        # Bresenham algorithm
+        dx = abs(x1 - x0)
+        sx = 1 if x0 < x1 else -1
+        dy = -abs(y1 - y0)
+        sy = 1 if y0 < y1 else -1
+        err = dx + dy
+        while((x0 != x1) and (y0 != y1)):
+            self.set_pixel(frame_buffer, x0, y0 , colored)
+            if (2 * err >= dy):
+                err += dy
+                x0 += sx
+            if (2 * err <= dx):
+                err += dx
+                y0 += sy
+
+    def draw_horizontal_line(self, frame_buffer, x, y, width, colored):
+        for i in range(x, x + width):
+            self.set_pixel(frame_buffer, i, y, colored)
+
+    def draw_vertical_line(self, frame_buffer, x, y, height, colored):
+        for i in range(y, y + height):
+            self.set_pixel(frame_buffer, x, i, colored)
+
+    def draw_rectangle(self, frame_buffer, x0, y0, x1, y1, colored):
+        min_x = x0 if x1 > x0 else x1
+        max_x = x1 if x1 > x0 else x0
+        min_y = y0 if y1 > y0 else y1
+        max_y = y1 if y1 > y0 else y0
+        self.draw_horizontal_line(frame_buffer, min_x, min_y, max_x - min_x + 1, colored)
+        self.draw_horizontal_line(frame_buffer, min_x, max_y, max_x - min_x + 1, colored)
+        self.draw_vertical_line(frame_buffer, min_x, min_y, max_y - min_y + 1, colored)
+        self.draw_vertical_line(frame_buffer, max_x, min_y, max_y - min_y + 1, colored)
+
+    def draw_filled_rectangle(self, frame_buffer, x0, y0, x1, y1, colored):
+        min_x = x0 if x1 > x0 else x1
+        max_x = x1 if x1 > x0 else x0
+        min_y = y0 if y1 > y0 else y1
+        max_y = y1 if y1 > y0 else y0
+        for i in range(min_x, max_x + 1):
+            self.draw_vertical_line(frame_buffer, i, min_y, max_y - min_y + 1, colored)
+
+    def draw_circle(self, frame_buffer, x, y, radius, colored):
+        # Bresenham algorithm
+        x_pos = -radius
+        y_pos = 0
+        err = 2 - 2 * radius
+        if (x >= self.width or y >= self.height):
+            return
+        while True:
+            self.set_pixel(frame_buffer, x - x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y - y_pos, colored)
+            self.set_pixel(frame_buffer, x - x_pos, y - y_pos, colored)
+            e2 = err
+            if (e2 <= y_pos):
+                y_pos += 1
+                err += y_pos * 2 + 1
+                if(-x_pos == y_pos and e2 <= x_pos):
+                    e2 = 0
+            if (e2 > x_pos):
+                x_pos += 1
+                err += x_pos * 2 + 1
+            if x_pos > 0:
+                break
+
+    def draw_filled_circle(self, frame_buffer, x, y, radius, colored):
+        # Bresenham algorithm
+        x_pos = -radius
+        y_pos = 0
+        err = 2 - 2 * radius
+        if (x >= self.width or y >= self.height):
+            return
+        while True:
+            self.set_pixel(frame_buffer, x - x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y + y_pos, colored)
+            self.set_pixel(frame_buffer, x + x_pos, y - y_pos, colored)
+            self.set_pixel(frame_buffer, x - x_pos, y - y_pos, colored)
+            self.draw_horizontal_line(frame_buffer, x + x_pos, y + y_pos, 2 * (-x_pos) + 1, colored)
+            self.draw_horizontal_line(frame_buffer, x + x_pos, y - y_pos, 2 * (-x_pos) + 1, colored)
+            e2 = err
+            if (e2 <= y_pos):
+                y_pos += 1
+                err += y_pos * 2 + 1
+                if(-x_pos == y_pos and e2 <= x_pos):
+                    e2 = 0
+            if (e2 > x_pos):
+                x_pos  += 1
+                err += x_pos * 2 + 1
+            if x_pos > 0:
+                break
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x37')
+        self._command(VCM_DC_SETTING_REGISTER, b'\x00') # to solve Vcom drop
+        self._command(POWER_SETTING, b'\x02\x00\x00\x00') # gate switch to external
+        self.wait_until_idle()
+        self._command(POWER_OFF)
diff --git a/epaper4in2.py b/epaper4in2.py
new file mode 100644
index 0000000..29e4b93
--- /dev/null
+++ b/epaper4in2.py
@@ -0,0 +1,146 @@
+# MicroPython library for Waveshare 4.2" B/W e-paper display GDEW042T2
+
+from micropython import const
+from time import sleep_ms
+import ustruct
+
+# Display resolution
+EPD_WIDTH  = const(400)
+EPD_HEIGHT = const(300)
+
+# Display commands
+PANEL_SETTING                  = const(0x00)
+POWER_SETTING                  = const(0x01)
+POWER_OFF                      = const(0x02)
+#POWER_OFF_SEQUENCE_SETTING     = const(0x03)
+POWER_ON                       = const(0x04)
+#POWER_ON_MEASURE               = const(0x05)
+BOOSTER_SOFT_START             = const(0x06)
+DEEP_SLEEP                     = const(0x07)
+DATA_START_TRANSMISSION_1      = const(0x10)
+#DATA_STOP                      = const(0x11)
+DISPLAY_REFRESH                = const(0x12)
+DATA_START_TRANSMISSION_2      = const(0x13)
+LUT_FOR_VCOM                   = const(0x20)
+LUT_WHITE_TO_WHITE             = const(0x21)
+LUT_BLACK_TO_WHITE             = const(0x22)
+LUT_WHITE_TO_BLACK             = const(0x23)
+LUT_BLACK_TO_BLACK             = const(0x24)
+PLL_CONTROL                    = const(0x30)
+#TEMPERATURE_SENSOR_COMMAND     = const(0x40)
+#TEMPERATURE_SENSOR_SELECTION   = const(0x41)
+#TEMPERATURE_SENSOR_WRITE       = const(0x42)
+#TEMPERATURE_SENSOR_READ        = const(0x43)
+VCOM_AND_DATA_INTERVAL_SETTING = const(0x50)
+#LOW_POWER_DETECTION            = const(0x51)
+#TCON_SETTING                   = const(0x60)
+RESOLUTION_SETTING             = const(0x61)
+#GSST_SETTING                   = const(0x65)
+#GET_STATUS                     = const(0x71)
+#AUTO_MEASUREMENT_VCOM          = const(0x80)
+#READ_VCOM_VALUE                = const(0x81)
+VCM_DC_SETTING                 = const(0x82)
+#PARTIAL_WINDOW                 = const(0x90)
+#PARTIAL_IN                     = const(0x91)
+#PARTIAL_OUT                    = const(0x92)
+
+#PROGRAM_MODE                   = const(0xA0)
+#ACTIVE_PROGRAMMING             = const(0xA1)
+#READ_OTP                       = const(0xA2)
+#POWER_SAVING                   = const(0xE3)
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+
+    # 44/42 bytes (look up tables)
+    LUT_VCOM0 = bytearray(b'\x00\x17\x00\x00\x00\x02\x00\x17\x17\x00\x00\x02\x00\x0A\x01\x00\x00\x01\x00\x0E\x0E\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+    LUT_WW    = bytearray(b'\x40\x17\x00\x00\x00\x02\x90\x17\x17\x00\x00\x02\x40\x0A\x01\x00\x00\x01\xA0\x0E\x0E\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+    LUT_BW    = LUT_WW
+    LUT_BB    = bytearray(b'\x80\x17\x00\x00\x00\x02\x90\x17\x17\x00\x00\x02\x80\x0A\x01\x00\x00\x01\x50\x0E\x0E\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+    LUT_WB    = LUT_BB
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(POWER_SETTING, b'\x03\x00\x2B\x2B\xFF') # VDS_EN VDG_EN, VCOM_HV VGHL_LV[1] VGHL_LV[0], VDH, VDL, VDHR
+        self._command(BOOSTER_SOFT_START, b'\x17\x17\x17') # 07 0f 17 1f 27 2F 37 2f
+        self._command(POWER_ON)
+        self.wait_until_idle()
+        self._command(PANEL_SETTING, b'\xBF\x0B') # KW-BF   KWR-AF  BWROTP 0f
+        self._command(PLL_CONTROL, b'\x3C') # 3A 100HZ   29 150Hz 39 200HZ  31 171HZ
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    def set_lut(self):
+        self._command(LUT_FOR_VCOM, self.LUT_VCOM0)    # vcom
+        self._command(LUT_WHITE_TO_WHITE, self.LUT_WW) # ww --
+        self._command(LUT_BLACK_TO_WHITE, self.LUT_BW) # bw r
+        self._command(LUT_WHITE_TO_BLACK, self.LUT_BB) # wb w
+        self._command(LUT_BLACK_TO_BLACK, self.LUT_WB) # bb b
+
+    # draw the current frame memory
+    def display_frame(self, frame_buffer):
+        self._command(RESOLUTION_SETTING, ustruct.pack(">HH", EPD_WIDTH, EPD_HEIGHT))
+        self._command(VCM_DC_SETTING, b'\x12')
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING)
+        self._command(0x97) # VBDF 17|D7 VBDW 97  VBDB 57  VBDF F7  VBDW 77  VBDB 37  VBDR B7
+        # TODO should ^ this be _data(0x97), not sure what it does
+
+        if (frame_buffer != None):
+            self._command(DATA_START_TRANSMISSION_1)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([0xFF])) # bit set: white, bit reset: black
+            sleep_ms(2)
+            self._command(DATA_START_TRANSMISSION_2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer[i]]))
+            sleep_ms(2)
+
+        self.set_lut()
+        self._command(DISPLAY_REFRESH)
+        sleep_ms(100)
+        self.wait_until_idle()
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x17') # border floating
+        self._command(VCM_DC_SETTING) # VCOM to 0V
+        self._command(PANEL_SETTING)
+        sleep_ms(100)
+        self._command(POWER_SETTING, b'\x00\x00\x00\x00\x00') # VG&VS to 0V fast
+        sleep_ms(100)
+        self._command(POWER_OFF)
+        self.wait_until_idle()
+        self._command(DEEP_SLEEP, b'\xA5')
diff --git a/epaper4in2b.py b/epaper4in2b.py
new file mode 100644
index 0000000..1757935
--- /dev/null
+++ b/epaper4in2b.py
@@ -0,0 +1,118 @@
+# MicroPython library for Waveshare 4.2" B/W/R e-paper display GDEW042Z15
+
+from micropython import const
+from time import sleep_ms
+
+# Display resolution
+EPD_WIDTH  = const(400)
+EPD_HEIGHT = const(300)
+
+# Display commands
+PANEL_SETTING                  = const(0x00)
+#POWER_SETTING                  = const(0x01)
+POWER_OFF                      = const(0x02)
+#POWER_OFF_SEQUENCE_SETTING     = const(0x03)
+POWER_ON                       = const(0x04)
+#POWER_ON_MEASURE               = const(0x05)
+BOOSTER_SOFT_START             = const(0x06)
+DEEP_SLEEP                     = const(0x07)
+DATA_START_TRANSMISSION_1      = const(0x10)
+#DATA_STOP                      = const(0x11)
+DISPLAY_REFRESH                = const(0x12)
+DATA_START_TRANSMISSION_2      = const(0x13)
+#VCOM_LUT                       = const(0x20)
+#W2W_LUT                        = const(0x21)
+#B2W_LUT                        = const(0x22)
+#W2B_LUT                        = const(0x23)
+#B2B_LUT                        = const(0x24)
+#PLL_CONTROL                    = const(0x30)
+#TEMPERATURE_SENSOR_CALIBRATION = const(0x40)
+#TEMPERATURE_SENSOR_SELECTION   = const(0x41)
+#TEMPERATURE_SENSOR_WRITE       = const(0x42)
+#TEMPERATURE_SENSOR_READ        = const(0x43)
+VCOM_AND_DATA_INTERVAL_SETTING = const(0x50)
+#LOW_POWER_DETECTION            = const(0x51)
+#TCON_SETTING                   = const(0x60)
+#RESOLUTION_SETTING             = const(0x61)
+#GSST_SETTING                   = const(0x65)
+#GET_STATUS                     = const(0x71)
+#AUTO_MEASURE_VCOM              = const(0x80)
+#VCOM_VALUE                     = const(0x81)
+#VCM_DC_SETTING                 = const(0x82)
+#PARTIAL_WINDOW                 = const(0x90)
+#PARTIAL_IN                     = const(0x91)
+#PARTIAL_OUT                    = const(0x92)
+#PROGRAM_MODE                   = const(0xA0)
+#ACTIVE_PROGRAM                 = const(0xA1)
+#READ_OTP_DATA                  = const(0xA2)
+#POWER_SAVING                   = const(0xE3)
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(BOOSTER_SOFT_START, b'\x17\x17\x17') # 07 0f 17 1f 27 2F 37 2f
+        self._command(POWER_ON)
+        self.wait_until_idle()
+        self._command(PANEL_SETTING, b'\x0F') # LUT from OTP
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    # draw the current frame memory
+    def display_frame(self, frame_buffer_black, frame_buffer_red):
+        if (frame_buffer_black != None):
+            self._command(DATA_START_TRANSMISSION_1)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer_black[i]]))
+            sleep_ms(2)
+        if (frame_buffer_red != None):
+            self._command(DATA_START_TRANSMISSION_2)
+            sleep_ms(2)
+            for i in range(0, self.width * self.height // 8):
+                self._data(bytearray([frame_buffer_red[i]]))
+            sleep_ms(2)
+
+        self._command(DISPLAY_REFRESH)
+        self.wait_until_idle()
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\xF7') # border floating
+        self._command(POWER_OFF)
+        self.wait_until_idle()
+        self._command(DEEP_SLEEP, b'\xA5') # check code
diff --git a/epaper7in5.py b/epaper7in5.py
new file mode 100644
index 0000000..997087d
--- /dev/null
+++ b/epaper7in5.py
@@ -0,0 +1,133 @@
+# MicroPython library for Waveshare 7.5" B/W e-paper display GDEW075T8
+
+from micropython import const
+from time import sleep_ms
+import ustruct
+
+# Display resolution
+EPD_WIDTH  = const(640)
+EPD_HEIGHT = const(384)
+
+# Display commands
+PANEL_SETTING                  = const(0x00)
+POWER_SETTING                  = const(0x01)
+POWER_OFF                      = const(0x02)
+#POWER_OFF_SEQUENCE_SETTING     = const(0x03)
+POWER_ON                       = const(0x04)
+#POWER_ON_MEASURE               = const(0x05)
+BOOSTER_SOFT_START             = const(0x06)
+DEEP_SLEEP                     = const(0x07)
+DATA_START_TRANSMISSION_1      = const(0x10)
+#DATA_STOP                      = const(0x11)
+DISPLAY_REFRESH                = const(0x12)
+#IMAGE_PROCESS                  = const(0x13)
+#LUT_FOR_VCOM                   = const(0x20)
+#LUT_BLUE                       = const(0x21)
+#LUT_WHITE                      = const(0x22)
+#LUT_GRAY_1                     = const(0x23)
+#LUT_GRAY_2                     = const(0x24)
+#LUT_RED_0                      = const(0x25)
+#LUT_RED_1                      = const(0x26)
+#LUT_RED_2                      = const(0x27)
+#LUT_RED_3                      = const(0x28)
+#LUT_XON                        = const(0x29)
+PLL_CONTROL                    = const(0x30)
+#TEMPERATURE_SENSOR_COMMAND     = const(0x40)
+TEMPERATURE_CALIBRATION        = const(0x41)
+#TEMPERATURE_SENSOR_WRITE       = const(0x42)
+#TEMPERATURE_SENSOR_READ        = const(0x43)
+VCOM_AND_DATA_INTERVAL_SETTING = const(0x50)
+#LOW_POWER_DETECTION            = const(0x51)
+TCON_SETTING                   = const(0x60)
+TCON_RESOLUTION                = const(0x61)
+#SPI_FLASH_CONTROL              = const(0x65)
+#REVISION                       = const(0x70)
+#GET_STATUS                     = const(0x71)
+#AUTO_MEASUREMENT_VCOM          = const(0x80)
+#READ_VCOM_VALUE                = const(0x81)
+VCM_DC_SETTING                 = const(0x82)
+FLASH_MODE                     = const(0xE5)
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(POWER_SETTING, b'\x37\x00')
+        self._command(PANEL_SETTING, b'\xCF\x08')
+        self._command(BOOSTER_SOFT_START, b'\xC7\xCC\x28')
+        self._command(POWER_ON)
+        self.wait_until_idle()
+        self._command(PLL_CONTROL, b'\x3C')
+        self._command(TEMPERATURE_CALIBRATION, b'\x00')
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x77')
+        self._command(TCON_SETTING, b'\x22')
+        self._command(TCON_RESOLUTION, ustruct.pack(">HH", EPD_WIDTH, EPD_HEIGHT))
+        self._command(VCM_DC_SETTING, b'\x1E') # decide by LUT file
+        self._command(FLASH_MODE, b'\x03')
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    # draw the current frame memory
+    def display_frame(self, frame_buffer):
+        self._command(DATA_START_TRANSMISSION_1)
+        for i in range(0, 30720):
+            temp1 = frame_buffer[i]
+            j = 0
+            while (j < 8):
+                if (temp1 & 0x80):
+                    temp2 = 0x03
+                else:
+                    temp2 = 0x00
+                temp2 = (temp2 << 4) & 0xFF
+                temp1 = (temp1 << 1) & 0xFF
+                j += 1
+                if (temp1 & 0x80):
+                    temp2 |= 0x03
+                else:
+                    temp2 |= 0x00
+                temp1 = (temp1 << 1) & 0xFF
+                self._data(bytearray([temp2]))
+                j += 1
+        self._command(DISPLAY_REFRESH)
+        sleep_ms(100)
+        self.wait_until_idle()
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(POWER_OFF)
+        self.wait_until_idle()
+        self._command(DEEP_SLEEP, b'\xA5')
diff --git a/epaper7in5b.py b/epaper7in5b.py
new file mode 100644
index 0000000..60eec18
--- /dev/null
+++ b/epaper7in5b.py
@@ -0,0 +1,137 @@
+# MicroPython library for Waveshare 7.5" B/W/R e-paper display GDEW075Z09
+
+from micropython import const
+from time import sleep_ms
+import ustruct
+
+# Display resolution
+EPD_WIDTH  = const(640)
+EPD_HEIGHT = const(384)
+
+# Display commands
+PANEL_SETTING                  = const(0x00)
+POWER_SETTING                  = const(0x01)
+POWER_OFF                      = const(0x02)
+#POWER_OFF_SEQUENCE_SETTING     = const(0x03)
+POWER_ON                       = const(0x04)
+#POWER_ON_MEASURE               = const(0x05)
+BOOSTER_SOFT_START             = const(0x06)
+DEEP_SLEEP                     = const(0x07)
+DATA_START_TRANSMISSION_1      = const(0x10)
+#DATA_STOP                      = const(0x11)
+DISPLAY_REFRESH                = const(0x12)
+#IMAGE_PROCESS                  = const(0x13)
+#LUT_FOR_VCOM                   = const(0x20)
+#LUT_BLUE                       = const(0x21)
+#LUT_WHITE                      = const(0x22)
+#LUT_GRAY_1                     = const(0x23)
+#LUT_GRAY_2                     = const(0x24)
+#LUT_RED_0                      = const(0x25)
+#LUT_RED_1                      = const(0x26)
+#LUT_RED_2                      = const(0x27)
+#LUT_RED_3                      = const(0x28)
+#LUT_XON                        = const(0x29)
+PLL_CONTROL                    = const(0x30)
+#TEMPERATURE_SENSOR_COMMAND     = const(0x40)
+TEMPERATURE_CALIBRATION        = const(0x41)
+#TEMPERATURE_SENSOR_WRITE       = const(0x42)
+#TEMPERATURE_SENSOR_READ        = const(0x43)
+VCOM_AND_DATA_INTERVAL_SETTING = const(0x50)
+#LOW_POWER_DETECTION            = const(0x51)
+TCON_SETTING                   = const(0x60)
+TCON_RESOLUTION                = const(0x61)
+#SPI_FLASH_CONTROL              = const(0x65)
+#REVISION                       = const(0x70)
+#GET_STATUS                     = const(0x71)
+#AUTO_MEASUREMENT_VCOM          = const(0x80)
+#READ_VCOM_VALUE                = const(0x81)
+VCM_DC_SETTING                 = const(0x82)
+FLASH_MODE                     = const(0xE5)
+
+class EPD:
+    def __init__(self, spi, cs, dc, rst, busy):
+        self.spi = spi
+        self.cs = cs
+        self.dc = dc
+        self.rst = rst
+        self.busy = busy
+        self.cs.init(self.cs.OUT, value=1)
+        self.dc.init(self.dc.OUT, value=0)
+        self.rst.init(self.rst.OUT, value=0)
+        self.busy.init(self.busy.IN)
+        self.width = EPD_WIDTH
+        self.height = EPD_HEIGHT
+
+    def _command(self, command, data=None):
+        self.dc.low()
+        self.cs.low()
+        self.spi.write(bytearray([command]))
+        self.cs.high()
+        if data is not None:
+            self._data(data)
+
+    def _data(self, data):
+        self.dc.high()
+        self.cs.low()
+        self.spi.write(data)
+        self.cs.high()
+
+    def init(self):
+        self.reset()
+        self._command(POWER_SETTING, b'\x37\x00')
+        self._command(PANEL_SETTING, b'\xCF\x08')
+        self._command(BOOSTER_SOFT_START, b'\xC7\xCC\x28')
+        self._command(POWER_ON)
+        self.wait_until_idle()
+        self._command(PLL_CONTROL, b'\x3C')
+        self._command(TEMPERATURE_CALIBRATION, b'\x00')
+        self._command(VCOM_AND_DATA_INTERVAL_SETTING, b'\x77')
+        self._command(TCON_SETTING, b'\x22')
+        self._command(TCON_RESOLUTION, ustruct.pack(">HH", EPD_WIDTH, EPD_HEIGHT))
+        self._command(VCM_DC_SETTING, b'\x1E') # decide by LUT file
+        self._command(FLASH_MODE, b'\x03')
+
+    def wait_until_idle(self):
+        while self.busy.value() == 1:
+            sleep_ms(100)
+
+    def reset(self):
+        self.rst.low()
+        sleep_ms(200)
+        self.rst.high()
+        sleep_ms(200)
+
+    # draw the current frame memory
+    def display_frame(self, frame_buffer):
+        self._command(DATA_START_TRANSMISSION_1)
+        for i in range(0, self.width // 4 * self.height):
+            temp1 = frame_buffer[i]
+            j = 0
+            while (j < 4):
+                if ((temp1 & 0xC0) == 0xC0):
+                    temp2 = 0x03
+                elif ((temp1 & 0xC0) == 0x00):
+                    temp2 = 0x00
+                else:
+                    temp2 = 0x04
+                temp2 = (temp2 << 4) & 0xFF
+                temp1 = (temp1 << 2) & 0xFF
+                j += 1
+                if ((temp1 & 0xC0) == 0xC0):
+                    temp2 |= 0x03
+                elif ((temp1 & 0xC0) == 0x00):
+                    temp2 |= 0x00
+                else:
+                    temp2 |= 0x04
+                temp1 = (temp1 << 2) & 0xFF
+                self._data(bytearray([temp2]))
+                j += 1
+        self._command(DISPLAY_REFRESH)
+        sleep_ms(100)
+        self.wait_until_idle()
+
+    # to wake call reset() or init()
+    def sleep(self):
+        self._command(POWER_OFF)
+        self.wait_until_idle()
+        self._command(DEEP_SLEEP, b'\xA5')
diff --git a/examples/2in9-hello-world/hello-world-white.bmp b/examples/2in9-hello-world/hello-world-white.bmp
new file mode 100644
index 0000000..b83f409
Binary files /dev/null and b/examples/2in9-hello-world/hello-world-white.bmp differ
diff --git a/examples/2in9-hello-world/hello-world-white.png b/examples/2in9-hello-world/hello-world-white.png
new file mode 100644
index 0000000..0210f84
Binary files /dev/null and b/examples/2in9-hello-world/hello-world-white.png differ
diff --git a/examples/2in9-hello-world/hello-world.bmp b/examples/2in9-hello-world/hello-world.bmp
new file mode 100644
index 0000000..411dc3d
Binary files /dev/null and b/examples/2in9-hello-world/hello-world.bmp differ
diff --git a/examples/2in9-hello-world/hello-world.png b/examples/2in9-hello-world/hello-world.png
new file mode 100644
index 0000000..da26df7
Binary files /dev/null and b/examples/2in9-hello-world/hello-world.png differ
diff --git a/examples/2in9-hello-world/image_dark.py b/examples/2in9-hello-world/image_dark.py
new file mode 100644
index 0000000..bc9a632
--- /dev/null
+++ b/examples/2in9-hello-world/image_dark.py
@@ -0,0 +1,3 @@
+# "hello world", rotated 90 deg, black bg, white text
+# 128 x 296
+hello_world_dark = 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diff --git a/examples/2in9-hello-world/image_light.py b/examples/2in9-hello-world/image_light.py
new file mode 100644
index 0000000..19ce491
--- /dev/null
+++ b/examples/2in9-hello-world/image_light.py
@@ -0,0 +1,3 @@
+# "hello world", rotated 90 deg, white bg, black text
+# 128 x 296
+hello_world_light = 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diff --git a/examples/2in9-hello-world/test.py b/examples/2in9-hello-world/test.py
new file mode 100644
index 0000000..e5797e9
--- /dev/null
+++ b/examples/2in9-hello-world/test.py
@@ -0,0 +1,54 @@
+import epaper2in9
+from pyb import SPI
+
+# SPI3 on Black STM32F407VET6
+spi = SPI(3, SPI.MASTER, baudrate=2000000, polarity=0, phase=0)
+cs = pyb.Pin('PB6')
+dc = pyb.Pin('PB7')
+rst = pyb.Pin('PB8')
+busy = pyb.Pin('PB9')
+
+e = epaper2in9.EPD(spi, cs, dc, rst, busy)
+e.init()
+
+w = 128
+h = 296
+x = 0
+y = 0
+
+# write hello world with black bg and white text
+from image_dark import hello_world_dark
+e.clear_frame_memory(b'\xFF')
+e.set_frame_memory(hello_world_dark, x, y, w, h)
+e.display_frame()
+
+# write hello world with white bg and black text
+from image_light import hello_world_light
+e.clear_frame_memory(b'\xFF')
+e.set_frame_memory(hello_world_light, x, y, w, h)
+e.display_frame()
+
+# clear display
+e.clear_frame_memory(b'\xFF')
+e.display_frame()
+
+# use a frame buffer
+# 128 * 296 / 8 = 4736 - thats a lot of pixels
+import framebuf
+buf = bytearray(128 * 296 // 8)
+fb = framebuf.FrameBuffer(buf, 128, 296, framebuf.MONO_HLSB)
+black = 0
+white = 1
+fb.fill(white)
+fb.text('Hello World',30,0,black)
+fb.pixel(30, 10, black)
+fb.hline(30, 30, 10, black)
+fb.vline(30, 50, 10, black)
+fb.line(30, 70, 40, 80, black)
+fb.rect(30, 90, 10, 10, black)
+fb.fill_rect(30, 110, 10, 10, black)
+for row in range(0,37):
+	fb.text(str(row),0,row*8,black)
+fb.text('Line 36',0,288,black)
+e.set_frame_memory(buf, x, y, w, h)
+e.display_frame()