kopia lustrzana https://github.com/pimoroni/pimoroni-pico
84 wiersze
2.8 KiB
Python
84 wiersze
2.8 KiB
Python
import time
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import plasma
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from plasma import plasma_stick
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from machine import RTC
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"""
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Spooky moon simulator!
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The LEDs will get brighter as midnight approaches!
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It won't do much in the day...
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Gets the time from a connected RV3028 RTC breakout:
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https://shop.pimoroni.com/products/rv3028-real-time-clock-rtc-breakout
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"""
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# Set how many LEDs you have
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NUM_LEDS = 50
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# pick a hue (0 - 360° on the colour wheel)
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# warm white moon - 60, blue moon - 230 , blood moon - 0
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HUE = 60
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SATURATION = 0.2 # increase this for a more colourful moon (max 1.0)
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# when to start counting down from, in seconds before midnight
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# eg from 10pm = 2 hours = 2 * 60 * 60 = 7200
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COUNT_FROM = 14400
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def set_pico_time():
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# the function sets the Pico's RTC from a RV3028 RTC breakout
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# to setup breakout (and set the time) run this first:
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# https://github.com/pimoroni/pimoroni-pico/blob/main/micropython/examples/breakout_rtc/set-time.py
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from pimoroni_i2c import PimoroniI2C
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from breakout_rtc import BreakoutRTC
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from machine import RTC
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# set up I2C
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i2c = PimoroniI2C(plasma_stick.SDA, plasma_stick.SCL)
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# set up the RTC breakout
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RV3028 = BreakoutRTC(i2c)
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# set the Pico's RTC from the RTC breakout
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RV3028.update_time()
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RTC().datetime([RV3028.get_year(), RV3028.get_month(), RV3028.get_date(),
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RV3028.get_weekday(), RV3028.get_hours(), RV3028.get_minutes(),
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RV3028.get_seconds(), 0])
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print(f"Pico RTC set to breakout time: {RV3028.string_date()} {RV3028.string_time()}")
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# set up the WS2812 / NeoPixel™ LEDs
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led_strip = plasma.WS2812(NUM_LEDS, 0, 0, plasma_stick.DAT, color_order=plasma.COLOR_ORDER_RGB)
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# start updating the LED strip
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led_strip.start()
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# call our function to set the Pico's RTC
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set_pico_time()
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while True:
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# get the time from Pico RTC
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year, month, day, _, hour, minute, second, _ = RTC().datetime()
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print(f'Time is {hour:02d}:{minute:02d}')
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# calculate how long to go until midnight
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if hour >= 12:
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hours_to_go = 23 - hour
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minutes_to_go = 59 - minute
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seconds_to_go = 59 - second
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total_seconds = hours_to_go * 60 * 60 + minutes_to_go * 60 + seconds_to_go
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print(f'{total_seconds} seconds until midnight')
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# or, if it's after midnight
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else:
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hours_since = 0 + hour
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minutes_since = 0 + minute
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seconds_since = 0 + second
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total_seconds = hours_since * 60 * 60 + minutes_since * 60 + seconds_since
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print(f'{total_seconds} seconds since midnight')
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# gets brighter as witching hour approacheth
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brightness = max(0, (COUNT_FROM - total_seconds) / COUNT_FROM)
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for i in range(NUM_LEDS):
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led_strip.set_hsv(i, HUE / 360.0, SATURATION, brightness)
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print(f'Brightness - {brightness * 100} %')
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time.sleep(10.0)
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