Once you've finished setting up your QT Py RP2040 with CircuitPython, you can access the code, bitmap and necessary libraries by downloading the Project Bundle.

To do this, click on the Download Project Bundle button in the window below. It will download as a zipped folder.

# SPDX-FileCopyrightText: 2021 Liz Clark for Adafruit Industries
#
# SPDX-License-Identifier: MIT

import time
import board
import busio
from adafruit_neokey.neokey1x4 import NeoKey1x4
import usb_hid
from adafruit_hid.keyboard import Keyboard
from adafruit_hid.keycode import Keycode

# use STEMMA I2C bus on RP2040 QT Py
i2c_bus = busio.I2C(board.SCL1, board.SDA1)

# Create a NeoKey object
neokey = NeoKey1x4(i2c_bus, addr=0x30)

#  create a keyboard object
keyboard = Keyboard(usb_hid.devices)

print("NeoKey Emoji keyboard - macOS")

#  states for key presses
key_0_state = False
key_1_state = False
key_2_state = False
key_3_state = False

#  update these arrays to customize your emojis
#  cat face emoji
emoji_0 = [Keycode.C, Keycode.A, Keycode.T, Keycode.DOWN_ARROW, Keycode.ENTER]
#  lightning bolt emoji
emoji_1 = [Keycode.V, Keycode.O, Keycode.L, Keycode.T, Keycode.DOWN_ARROW, Keycode.ENTER]
#  control panel emoji
emoji_2 = [Keycode.C, Keycode.O, Keycode.N, Keycode.T, Keycode.R, Keycode.O,
           Keycode.DOWN_ARROW, Keycode.ENTER]
#  guitar emoji
emoji_3 = [Keycode.G, Keycode.U, Keycode.I, Keycode.T, Keycode.DOWN_ARROW, Keycode.ENTER]

while True:
    #  switch debouncing
    #  also turns off NeoPixel on release
    if not neokey[0] and key_0_state:
        key_0_state = False
        neokey.pixels[0] = 0x0
    if not neokey[1] and key_1_state:
        key_1_state = False
        neokey.pixels[1] = 0x0
    if not neokey[2] and key_2_state:
        key_2_state = False
        neokey.pixels[2] = 0x0
    if not neokey[3] and key_3_state:
        key_3_state = False
        neokey.pixels[3] = 0x0

    #  if 1st neokey is pressed...
    if neokey[0] and not key_0_state:
        print("Button A")
        #  turn on NeoPixel
        neokey.pixels[0] = 0xFF0000
        #  open macOS emoji menu
        keyboard.send(Keycode.CONTROL, Keycode.COMMAND, Keycode.SPACE)
        #  delay for opening menu
        time.sleep(.2)
        #  send key presses for emoji_0
        for i in emoji_0:
            keyboard.send(i)
            time.sleep(0.05)
        #  update key state
        key_0_state = True

    #  if 2nd neokey is pressed...
    if neokey[1] and not key_1_state:
        print("Button B")
        #  turn on NeoPixel
        neokey.pixels[1] = 0xFFFF00
        #  open macOS emoji menu
        keyboard.send(Keycode.CONTROL, Keycode.COMMAND, Keycode.SPACE)
        #  delay for opening menu
        time.sleep(.2)
        #  send key presses for emoji_1
        for i in emoji_1:
            keyboard.send(i)
            time.sleep(0.05)
        #  update key state
        key_1_state = True

    #  if 3rd neokey is pressed...
    if neokey[2] and not key_2_state:
        print("Button C")
        #  turn on NeoPixel
        neokey.pixels[2] = 0x00FF00
        #  open macOS emoji menu
        keyboard.send(Keycode.CONTROL, Keycode.COMMAND, Keycode.SPACE)
        #  delay for opening menu
        time.sleep(.2)
        #  send key presses for emoji_2
        for i in emoji_2:
            keyboard.send(i)
            time.sleep(0.05)
        #  update key state
        key_2_state = True

    #  if 4th neokey is pressed...
    if neokey[3] and not key_3_state:
        print("Button D")
        #  turn on NeoPixel
        neokey.pixels[3] = 0x00FFFF
        #  open macOS emoji menu
        keyboard.send(Keycode.CONTROL, Keycode.COMMAND, Keycode.SPACE)
        #  delay for opening menu
        time.sleep(.2)
        #  send key presses for emoji_3
        for i in emoji_3:
            keyboard.send(i)
            time.sleep(0.05)
        #  update key state
        key_3_state = True

Upload the Code and Libraries to the QT Py RP2040

After downloading the Project Bundle, plug your QT Py RP2040 into the computer USB port. You should see a new flash drive appear in the computer's File Explorer or Finder (depending on your operating system) called CIRCUITPY. Unzip the folder and copy the following items to the QT Py RP2040's CIRCUITPY drive. 

  • lib folder
  • macOS_code.py
  • windows_code.py

Renaming the Code File

There are two versions of the emoji code: one for macOS (macOS_code.py) and one for Windows (windows_code.py). Choose the version for your operating system and rename it to code.py. You can delete the version that you are not using from your CIRCUITPY drive.

Your QT Py RP2040 CIRCUITPY drive should look like this after copying the lib folder and renaming the code.py file.

This guide was first published on Jul 27, 2021. It was last updated on 2021-07-27 17:02:26 -0400.

This page (Coding the NeoKey Emoji Keyboard) was last updated on Jul 02, 2022.

Text editor powered by tinymce.