Skip to content

Instantly share code, notes, and snippets.

@curtmerrill
Last active Aug 31, 2021
Embed
What would you like to do?
Neotrellis soundboard
import adafruit_imageload
import audioio
import audiocore
import board
import busio
import digitalio
import displayio
import os
import random
import time
from adafruit_neotrellis.neotrellis import NeoTrellis
# Color definitions
OFF = (0, 0, 0)
RED = (25, 0, 0)
YELLOW = (20, 15, 0)
GREEN = (0, 25, 0)
CYAN = (0, 25, 25)
BLUE = (0, 0, 25)
PURPLE = (18, 0, 25)
WHITE = (127, 127, 127)
COLORS = [RED, YELLOW, GREEN, CYAN, BLUE, PURPLE]
# Set up Trellis
i2c_bus = busio.I2C(board.SCL, board.SDA)
trellis = NeoTrellis(i2c_bus)
# Set up Display
display = board.DISPLAY
# Load files
# All files are in the `/media/` directory. image-sound pairs have same basename with different
# extensions: .bmp for images, .wav for sounds.
all_items = [file.split('.')[0] for file in os.listdir("/media/") if (file.endswith(".bmp"))]
items = []
for i in range(16):
rand_item = random.randint(0, len(all_items)-1)
items.append(all_items.pop(rand_item))
def update_display(imagename="bear"):
bitmap, palette = adafruit_imageload.load('media/' + imagename + '.bmp',
bitmap=displayio.Bitmap,
palette= displayio.Palette)
tile_grid = displayio.TileGrid(bitmap, pixel_shader=palette)
group = displayio.Group(scale=2)
group.append(tile_grid)
display.show(group)
# Set up audio
speaker_enable = digitalio.DigitalInOut(board.SPEAKER_ENABLE)
speaker_enable.direction = digitalio.Direction.OUTPUT
speaker_enable.value = True
myaudio = audioio.AudioOut(board.A0)
audio_file = None
def play_file(audio_filename="bear"):
global audio_file
print("attempting to play " + audio_filename)
if myaudio.playing:
myaudio.stop()
if audio_file:
audio_file.close()
audio_file = open('media/'+audio_filename+'.wav', 'rb')
wav = audiocore.WaveFile(audio_file)
myaudio.play(wav)
def blink(event):
if event.edge == NeoTrellis.EDGE_RISING:
trellis.pixels[event.number] = WHITE
update_display(items[event.number])
play_file(items[event.number])
elif event.edge == NeoTrellis.EDGE_FALLING:
trellis.pixels[event.number] = trellis_colors[event.number]
# Initialize Trellis
trellis_colors = []
for i in range(16):
trellis.activate_key(i, NeoTrellis.EDGE_RISING)
trellis.activate_key(i, NeoTrellis.EDGE_FALLING)
trellis.callbacks[i] = blink
trellis_colors.append(random.choice(COLORS))
trellis.pixels[i] = trellis_colors[i]
time.sleep(0.05)
while True:
trellis.sync()
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment