Here is the full code listing for the CircuitPython version. Name the file main.py and save it to your Circuit Playground Express.
CircuitPython only works on the Circuit Playground Express.
# Circuit Playground Express Dear Diary Alarm # # Don't let sister/brother read your secrets! Place the "armed" Circuit # Playground under your diary. If someone tries to remove the diary, an alarm # will sound. # # Author: Carter Nelson # MIT License (https://opensource.org/licenses/MIT) import time from adafruit_circuitplayground.express import cpx # Set alarm threshold ALARM_THRESHOLD = 20 # Turn on all the NeoPixels cpx.pixels.fill((255,0,0)) # Wait for button press while (cpx.button_a == False) and (cpx.button_b == False): # Do nothing pass # Countdown timer for p in range(10): cpx.pixels[p] = 0 time.sleep(0.5) # Compute covered light sensor value covered_value = 0 for count in range(5): covered_value = covered_value + cpx.light covered_value = covered_value / 5 # Beep to indicate armed cpx.play_tone(1000, 1) # Begin alarm triggered = False while True: if triggered: cpx.play_tone(2000, 0.5) time.sleep(0.5) cpx.play_tone(3000, 0.5) time.sleep(0.5) if cpx.light > covered_value + ALARM_THRESHOLD: triggered = True
Page last edited March 08, 2024
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