A Circuitpython gist for moving a mouse using button presses on a TrinketMO.

buttonMouse.py

"""Button Based Mouse Navigation using the Adafruit Trinket MO board"""
#Import standard libraries
import time
import board
from digitalio import DigitalInOut, Direction, Pull
import usb_hid

#Import the mouse libaray from adafruit_hid folder
from adafruit_hid.mouse import Mouse

#Indicate pins being used
upButton = DigitalInOut(board.D0)
downButton = DigitalInOut(board.D1)
rightButton = DigitalInOut(board.D2)
leftButton = DigitalInOut(board.D3)
mouseClick = DigitalInOut(board.D4)

#Indicate that the pins will be used as input
upButton.direction = Direction.INPUT
downButton.direction = Direction.INPUT
rightButton.direction = Direction.INPUT
leftButton.direction = Direction.INPUT
mouseClick.direction = Direction.INPUT

#Indicate the pins will start in the pull up position
upButton.pull = Pull.UP
downButton.pull = Pull.UP
rightButton.pull = Pull.UP
leftButton.pull = Pull.UP
mouseClick.pull = Pull.UP


#start the mouse instance and print a serial command that things are ready to go.
mouse = Mouse(usb_hid.devices)
print("Waiting for key pin...")

#Loop through and check for pin position changes. Send a keycode combination if condition is met.
while True:
    if not upButton.value:
        mouse.move(x=10)
        print('up')
    if not downButton.value:
        mouse.move(x=-10)
        print('Down')
    if not rightButton.value:
        mouse.move(y=10)
        print('right')
    if not leftButton.value:
        mouse.move(y=-10)
        print('left')
    if not mouseClick.value:
        mouse.click(Mouse.LEFT_BUTTON)
        time.sleep(0.2)  # Debounce delay
    #Short debounce pause after keypress to slow a key repeat rate. Modify as needed.
    time.sleep(.2)