diff --git a/drivers/ssd1351/ssd1351_16bit.py b/drivers/ssd1351/ssd1351_16bit.py
index 18cd898..4d30605 100644
--- a/drivers/ssd1351/ssd1351_16bit.py
+++ b/drivers/ssd1351/ssd1351_16bit.py
@@ -14,6 +14,7 @@ import framebuf
 import utime
 import gc
 import micropython
+from uctypes import addressof
 from drivers.boolpalette import BoolPalette
 
 # https://github.com/peterhinch/micropython-nano-gui/issues/2
diff --git a/drivers/ssd1351/ssd1351_4bit.py b/drivers/ssd1351/ssd1351_4bit.py
index bc02ab5..e43f79d 100644
--- a/drivers/ssd1351/ssd1351_4bit.py
+++ b/drivers/ssd1351/ssd1351_4bit.py
@@ -15,6 +15,7 @@ import framebuf
 import utime
 import gc
 import micropython
+from uctypes import addressof
 from drivers.boolpalette import BoolPalette
 
 # https://github.com/peterhinch/micropython-nano-gui/issues/2
diff --git a/drivers/ssd1351/ssd1351_generic.py b/drivers/ssd1351/ssd1351_generic.py
index e2e284b..589c2a8 100644
--- a/drivers/ssd1351/ssd1351_generic.py
+++ b/drivers/ssd1351/ssd1351_generic.py
@@ -16,6 +16,7 @@ import framebuf
 import utime
 import gc
 import micropython
+from uctypes import addressof
 from drivers.boolpalette import BoolPalette
 
 import sys
diff --git a/setup_examples/st7735r_esp32.py b/setup_examples/st7735r_esp32.py
index e0ef2c5..6761fa4 100644
--- a/setup_examples/st7735r_esp32.py
+++ b/setup_examples/st7735r_esp32.py
@@ -25,11 +25,11 @@
 from machine import SPI, Pin
 import gc
 #from drivers.ssd1351.ssd1351_generic import SSD1351 as SSD
-from drivers.st7735r.st7735r import ST7735R as SSD
+#from drivers.st7735r.st7735r import ST7735R as SSD
 #from drivers.st7735r.st7735r144 import ST7735R as SSD
-#from drivers.st7735r.st7735r_4bit import ST7735R as SSD
+from drivers.st7735r.st7735r_4bit import ST7735R as SSD
 
-height = 128   # Ensure height is correct
+height = 96   # SSD1351: ensure height is correct (96/128)
 
 pdc = Pin(27, Pin.OUT, value=0)  # Arbitrary pins
 pcs = Pin(25, Pin.OUT, value=1)