Once you've installed the latest version of CircuitPython onto your board, you'll need to grab the code, libraries and any assets included with the project.
Click the download project bundle button below to get the code, libraries and assets all in one!
# SPDX-FileCopyrightText: 2022 Ruiz Bros for Adafruit Industries # SPDX-License-Identifier: MIT import time import digitalio import board import usb_hid from adafruit_hid.consumer_control import ConsumerControl from adafruit_hid.consumer_control_code import ConsumerControlCode # The button pins we'll use, each will have an internal pullup buttonpins = [board.A1, board.A2, board.A3] # The keycode sent for each button, will be paired with a control key buttonkeys = [ ConsumerControlCode.PLAY_PAUSE, # Center Foot Pad ConsumerControlCode.VOLUME_DECREMENT, #Left Foot Pad ConsumerControlCode.VOLUME_INCREMENT, # Right Foot Pad ] # the keyboard object! cc = ConsumerControl(usb_hid.devices) # our array of button objects buttons = [] # make all pin objects, make them inputs w/pullups for pin in buttonpins: button = digitalio.DigitalInOut(pin) button.direction = digitalio.Direction.INPUT button.pull = digitalio.Pull.UP buttons.append(button) print("Waiting for button presses") while True: # check each button for button in buttons: if not button.value: # pressed? i = buttons.index(button) print("Button #%d Pressed" % i) while not button.value: pass # wait for it to be released! # type the keycode! k = buttonkeys[i] # get the corresp. keycode cc.send(k) time.sleep(0.01)
Upload Code, Libraries and Assets
Unzip the project bundle and upload the files to the CIRCUITPY drive.
Your CIRCUITPY drive should look like this after you've uploaded the code, libraries and assets.
Check out the guides linked below for more information on using the USB-HID library for CircuitPython.
Modify Controls
The three switches are assigned the consumer controls for play/pause volume up, and volume down. Adjust the following code to change the keys control or the order of the arrangement. The buttonpins
and buttonkeys
are ordered chronologically.
# The button pins we'll use, each will have an internal pullup buttonpins = [board.A1, board.A2, board.A3] # The keycode sent for each button, will be paired with a control key buttonkeys = [ ConsumerControlCode.PLAY_PAUSE, ConsumerControlCode.VOLUME_INCREMENT, ConsumerControlCode.VOLUME_DECREMENT ]
Page last edited January 21, 2025
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