Maker and IoT Ideas
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Rev 2.0 of the RP2040 Joystick Mouse

Rev 2.0 of the RP2040 Joystick Mouse, as well as the code that makes it work

IntermediateWork in progress2 hours183
Rev 2.0 of the RP2040 Joystick Mouse

Things used in this project

Story

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Schematics

Schematic

Code

Code

Python
Circuitpython Code - A work in progress
import time
import board
import busio
from rainbowio import colorwheel
import neopixel
import digitalio
import rotaryio
import microcontroller
from digitalio import Direction
from adafruit_mcp230xx.mcp23008 import MCP23008
import digitalio
i2c = busio.I2C(board.SCL, board.SDA)
mcp = MCP23008(i2c)

from analogio import AnalogIn
import usb_hid
from adafruit_hid.mouse import Mouse

mouse = Mouse(usb_hid.devices)
xAxis = AnalogIn(board.A2)
yAxis = AnalogIn(board.A1)

# NEOPIXEL
pixel_pin = board.NEOPIXEL
num_pixels = 1
pixels = neopixel.NeoPixel(pixel_pin, num_pixels, brightness=0.1, auto_write=False)

leftbutton = mcp.get_pin(3)
leftbutton.direction = digitalio.Direction.INPUT
leftbutton.pull = digitalio.Pull.UP

centerbutton = mcp.get_pin(4)
centerbutton.direction = digitalio.Direction.INPUT
centerbutton.pull = digitalio.Pull.UP

maint_btn = digitalio.DigitalInOut(board.D0)
maint_btn.switch_to_input(pull=digitalio.Pull.UP)

rightbutton = mcp.get_pin(5)
rightbutton.direction = digitalio.Direction.INPUT
rightbutton.pull = digitalio.Pull.UP

enc_btn = mcp.get_pin(2)
enc_btn.direction = digitalio.Direction.INPUT
enc_btn.pull = digitalio.Pull.UP

scroll_up = mcp.get_pin(6)
scroll_up.direction = digitalio.Direction.INPUT
scroll_up.pull = digitalio.Pull.UP

scroll_down = mcp.get_pin(7)
scroll_down.direction = digitalio.Direction.INPUT
scroll_down.pull = digitalio.Pull.UP

enc_a = mcp.get_pin(0)
enc_a.direction = digitalio.Direction.INPUT
enc_a.pull = digitalio.Pull.UP

enc_b = mcp.get_pin(1)
enc_b.direction = digitalio.Direction.INPUT
enc_b.pull = digitalio.Pull.UP

enc_a_pressed = False
enc_b_pressed = False

#mousewheel = rotaryio.IncrementalEncoder(enc_a, mcp.get_pin(1))
#last_position = mousewheel.position

move_speed = 3
enc_down = 0

RED = (255, 0, 0)
YELLOW = (255, 150, 0)
GREEN = (0, 255, 0)
CYAN = (0, 255, 255)
BLUE = (0, 0, 255)
PURPLE = (180, 0, 255)
BLACK = (0, 0, 0)


if move_speed == 0:
    in_min, in_max, out_min, out_max = (0, 65000, -20, 20)
    filter_joystick_deadzone = (
        lambda x: int((x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min)
        if abs(x - 32768) > 500
        else 0
    )
if move_speed == 1:
    pixels.fill(GREEN)
    pixels.show()
    in_min, in_max, out_min, out_max = (0, 65000, -15, 15)
    filter_joystick_deadzone = (
        lambda x: int((x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min)
        if abs(x - 32768) > 500
        else 0
    )
if move_speed == 2:
    pixels.fill(BLUE)
    pixels.show()
    in_min, in_max, out_min, out_max = (0, 65000, -10, 10)


filter_joystick_deadzone = (
        lambda x: int((x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min)
        if abs(x - 32768) > 500
        else 0
    )
if move_speed == 3:
    pixels.fill(PURPLE)
    pixels.show()
    in_min, in_max, out_min, out_max = (0, 65000, -8, 8)
    filter_joystick_deadzone = (
        lambda x: int((x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min)
        if abs(x - 32768) > 500
        else 0
    )
if move_speed == 4:
    pixels.fill(CYAN)
    pixels.show()
    in_min, in_max, out_min, out_max = (0, 65000, -5, 5)
    filter_joystick_deadzone = (
        lambda x: int((x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min)
        if abs(x - 32768) > 500
        else 0
    )


pixels.fill(BLACK)
pixels.show()
while True:
    # Set mouse accelleration ( speed)
    if move_speed == 0:
        pixels.fill(BLACK)
        pixels.show()
        in_min, in_max, out_min, out_max = (0, 65000, -20, 20)
        filter_joystick_deadzone = (
            lambda x: int(
                (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
            )
            if abs(x - 32768) > 500
            else 0
        )
    if move_speed == 1:
        pixels.fill(GREEN)
        pixels.show()
        in_min, in_max, out_min, out_max = (0, 65000, -15, 15)
        filter_joystick_deadzone = (
            lambda x: int(
                (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
            )
            if abs(x - 32768) > 500
            else 0
        )
    if move_speed == 2:
        pixels.fill(BLUE)
        pixels.show()
        in_min, in_max, out_min, out_max = (0, 65000, -10, 10)
        filter_joystick_deadzone = (
            lambda x: int(
                (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
            )
            if abs(x - 32768) > 500
            else 0
        )
    if move_speed == 3:
        pixels.fill(PURPLE)
        pixels.show()
        in_min, in_max, out_min, out_max = (0, 65000, -8, 8)
        filter_joystick_deadzone = (
            lambda x: int(
                (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
            )
            if abs(x - 32768) > 500
            else 0
        )
    if move_speed == 4:
        pixels.fill(CYAN)
        pixels.show()
        in_min, in_max, out_min, out_max = (0, 65000, -5, 5)
        filter_joystick_deadzone = (
            lambda x: int(
                (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min
            )
            if abs(x - 32768) > 500
            else 0
        )

    #current_position = mousewheel.position
    #position_change = current_position - last_position

    x_offset = filter_joystick_deadzone(xAxis.value) * -1  # Invert axis
    y_offset = filter_joystick_deadzone(yAxis.value) * -1
    mouse.move(x_offset, y_offset, 0)

    if enc_btn.value and enc_down == 1:
        move_speed = move_speed + 1
        if move_speed > 4:
            move_speed = 0

        # print (move_speed)
        enc_down = 0

    if not enc_btn.value:
        enc_down = 1

    if leftbutton.value:
        mouse.release(Mouse.LEFT_BUTTON)
        # pixels.fill(BLACK)
        # pixels.show()
    else:
        mouse.press(Mouse.LEFT_BUTTON)
        pixels.fill(GREEN)
        pixels.show()

    if centerbutton.value:
        mouse.release(Mouse.MIDDLE_BUTTON)
    else:
        mouse.press(Mouse.MIDDLE_BUTTON)
        pixels.fill(YELLOW)
        pixels.show()

    # Center button on joystick
    if maint_btn.value:
        mouse.release(Mouse.LEFT_BUTTON)
    else:
        mouse.press(Mouse.LEFT_BUTTON)
        pixels.fill(GREEN)
        pixels.show()

    if rightbutton.value:
        mouse.release(Mouse.RIGHT_BUTTON)
        # pixels.fill(BLACK)
        # pixels.show()
    else:
        mouse.press(Mouse.RIGHT_BUTTON)
        pixels.fill(PURPLE)
        pixels.show()

    if not scroll_up.value:
        mouse.move(wheel=1)
        time.sleep(0.25)
        pixels.fill(BLUE)
        pixels.show()

    if not scroll_down.value:
        mouse.move(wheel=-1)
        time.sleep(0.25)
        pixels.fill(CYAN)
        pixels.show()

    if not scroll_up.value and not scroll_down.value:
        for x in range(4):
            pixels.fill(RED)
            pixels.show()
            time.sleep(0.5)
            pixels.fill(BLACK)
            pixels.show()
            time.sleep(0.5)
        microcontroller.reset()

    if enc_a.value:
        enc_a_pressed = False
    else:
        if enc_b_pressed:
            enc_a_pressed = False
        else:
            enc_a_pressed = True

    if enc_b.value:
        enc_b_pressed = False
    else:
        if enc_a_pressed:
            enc_b_pressed = False
        else:
            enc_b_pressed = True

    if enc_a_pressed:
        mouse.move(wheel=1)
        time.sleep(0.25)
        enc_a_pressed = False
    if enc_b_pressed:
        mouse.move(wheel=-1)
        time.sleep(0.25)
        enc_b_pressed = False

    #if position_change > 0:
    #    mouse.move(wheel=position_change)
    #    # print(current_position)
    #    pixels.fill(BLUE)
    #    pixels.show()
    #elif position_change < 0:
    #    mouse.move(wheel=position_change)
    #    # print(current_position)
    #    pixels.fill(CYAN)
    #    pixels.show()
    #last_position = current_position
    pixels.fill(BLACK)
    pixels.show()

Credits

Maker and IoT Ideas

Maker and IoT Ideas

90 projects • 22 followers
I design custom PCB solutions, usually with an IoT or Automation twist, to solve problems in my daily life. Sometimes also for other people.

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