main.py

import time
import random
import microcontroller
from adafruit_circuitplayground.express import cpx


# This is a special command that will cause a single-press RESET to go
# into bootloader more (instead of double-click) to make it easier for
# MakeCode-rs who don't intend to use CircuitPython!
microcontroller.on_next_reset(microcontroller.RunMode.BOOTLOADER)

# Set this to True to turn on the capacitive touch tones
TOUCH_PIANO = False

# NeoPixel color names
WHITE = (50, 50, 50)
OFF   = (0,   0,  0)

# Not too bright!
cpx.pixels.brightness = 0.3

def wheel(pos):
    # Input a value 0 to 255 to get a color value.
    # The colours are a transition r - g - b - back to r.
    if (pos < 0) or (pos > 255):
        return (0, 0, 0)
    if pos < 85:
        return (int(255 - pos*3), int(pos*3), 0)
    elif pos < 170:
        pos -= 85
        return (0, int(255 - (pos*3)), int(pos*3))
    else:
        pos -= 170
    return (int(pos*3), 0, int(255 - pos*3))

cpx.play_file("Coin.wav")   # Play a coin sound on boot

# Set up the accelerometer to detect tapping
cpx.detect_taps = 1    # detect single tap only

# Our counter for all 10 pixels
pixeln = 0
# We can tell the switch changed
last_switch = cpx.switch

while True:
    cpx.red_led = True                  # Turns the little LED next to USB on

    if cpx.tapped:     # Look for a single tap
        if random.randint(0, 1) == 0:   # Play one of two sounds...
            cpx.play_file("Coin.wav")
        else:
            cpx.play_file("Wild Eep.wav")

    # This math makes a 'comet' of swirling rainbow colors!
    for p in range(10):
        color = wheel(25 * ((pixeln + p)%10))
        cpx.pixels[p] = [int(c * ( (10 - (pixeln+p)%10)) / 10.0) for c in color]

    cpx.red_led = False    # turn off the LED

    # Each time 'round we tick off one pixel at a time
    if cpx.switch:      # depending on the switch we'll go clockwise
        pixeln += 1
        if pixeln > 9:
            pixeln = 0
    else:               # or counter clockwise
        pixeln -= 1
        if pixeln < 0:
            pixeln = 9

    if pixeln == 0:   # Every time we go around, print sensor data
        print("Temperature: %0.1f *C" % cpx.temperature)
        print("Light Level: %d" % cpx.light)
        x, y, z = cpx.acceleration
        print("Accelerometer: (%0.1f, %0.1f, %0.1f) m/s^2" % (x, y, z))
        print('-' * 40)

    # Depending on the buttons, make it dimmer
    if cpx.button_a:
        print("Button A pressed")
        cpx.pixels.brightness = 0.1
    # or brighter!
    if cpx.button_b:
        print("Button B pressed")
        cpx.pixels.brightness = 0.5
    # neither buttons pressed
    if not cpx.button_a and not cpx.button_b:
        cpx.pixels.brightness = 0.3

    # Check the switch
    if cpx.switch:
        if last_switch != cpx.switch: # if it moved, print it out
            print("Switch moved left")
    else:
        if last_switch != cpx.switch:
            print("Switch moved right")
    last_switch = cpx.switch

    if TOUCH_PIANO:
        if cpx.touch_A4:              #  If we set to play tones
            cpx.start_tone(524)
        elif cpx.touch_A5:
            cpx.start_tone(588)
        elif cpx.touch_A6:
            cpx.start_tone(660)
        elif cpx.touch_A7:
            cpx.start_tone(698)
        elif cpx.touch_A1:
            cpx.start_tone(784)
        elif cpx.touch_A2:
            cpx.start_tone(880)
        elif cpx.touch_A3:
            cpx.start_tone(988)
        else:
            cpx.stop_tone()           # nothing touched? turn off the audio

    # loop to the beginning!