animate_and_speaker_V3.py

# Circuit Playground 808 Drum machine
import time
import board
import touchio
import digitalio

import neopixel
from adafruit_led_animation.animation.comet import Comet
from adafruit_led_animation.color import BLUE

try:
    from audiocore import WaveFile
except ImportError:
    from audioio import WaveFile

try:
    from audioio import AudioOut
except ImportError:
    try:
        from audiopwmio import PWMAudioOut as AudioOut
    except ImportError:
        pass  # not always supported by every board!

pixel_pin = board.TX
pixel_num = 31
pixels = neopixel.NeoPixel(pixel_pin, pixel_num, brightness=0.01, auto_write=False)

onboard_pixels = neopixel.NeoPixel(board.NEOPIXEL, 10, brightness=1.0, auto_write=True)

comet = Comet(pixels, speed=0.01, color=BLUE, tail_length=7, bounce=True)

bpm = 120  # Beats per minute, change this to suit your tempo

# Enable the speaker
speaker_enable = digitalio.DigitalInOut(board.SPEAKER_ENABLE)
speaker_enable.direction = digitalio.Direction.OUTPUT
speaker_enable.value = True

# Make the input capacitive touchpads
capPins = (board.A1, board.A2, board.A3, board.A4, board.A5,
           board.A6)

touchPad = []
for i in range(6):
    touchPad.append(touchio.TouchIn(capPins[i]))

# The seven files assigned to the touchpads
audiofiles = ["bd_tek.wav", "elec_hi_snare.wav", "elec_cymbal.wav",
              "elec_blip2.wav", "bd_zome.wav", "bass_hit_c.wav"]

audio = AudioOut(board.SPEAKER)


def play_file(filename):
    print("playing file " + filename)
    file = open(filename, "rb")
    wave = WaveFile(file)
    audio.play(wave)
    time.sleep(bpm / 960)  # Sixteenth note delay


while True:
    comet.animate()
    onboard_pixels.fill((1, 0, 0))
    for i in range(6):
        if touchPad[i].value:
            play_file(audiofiles[i])