68 lines
1.6 KiB
Python
68 lines
1.6 KiB
Python
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#!/usr/bin/python
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import RPi.GPIO as GPIO
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import time
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from rpi_ws281x import PixelStrip, Color, Adafruit_NeoPixel
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SENSOR_PIN = 23
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LIGHT_SENSOR_PIN = 21
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GPIO.setmode(GPIO.BCM)
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GPIO.setup(SENSOR_PIN, GPIO.IN)
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GPIO.setup(LIGHT_SENSOR_PIN, GPIO.IN)
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LED_COUNT = 15
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led_duration = 0
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strip = Adafruit_NeoPixel(LED_COUNT, 18, 800000, 5, False, 255)
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strip.begin()
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def turn_on_light(channel):
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if GPIO.input(LIGHT_SENSOR_PIN):
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# motion detected
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# reset LED duration
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global led_duration
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led_duration = 0
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colorWipe(strip, Color(255, 0, 32))
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else:
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# there was motion but it is not dark yet
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colorWipe(strip, Color(0, 0, 0))
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def turn_off_light(channel):
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# turn off light
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colorWipe(strip, Color(0, 0, 0))
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def colorWipe(strip, color, wait_ms=100):
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for i in range(strip.numPixels()):
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strip.setPixelColor(i, color)
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strip.show()
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time.sleep(wait_ms / 1000.0)
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try:
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GPIO.add_event_detect(
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SENSOR_PIN, GPIO.RISING, callback=turn_on_light
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)
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GPIO.add_event_detect(
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LIGHT_SENSOR_PIN, GPIO.RISING, callback=turn_off_light, bouncetime=500
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)
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while True:
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if strip.getPixelColor(0) > 0:
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# check if LED is on for more than X seconds
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if led_duration > 180:
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# turn off LED
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colorWipe(strip, Color(0, 0, 0))
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led_duration = 0
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else:
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led_duration += 1
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else:
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led_duration = 0
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time.sleep(1)
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except KeyboardInterrupt:
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colorWipe(strip, Color(0, 0, 0))
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print("Exiting...")
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GPIO.cleanup()
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