PlatformIO Arduino Mouse Target

The pico_platformio_touch_mouse target uses the community-standard Arduino-Pico (earlephilhower) core via PlatformIO.

platformio.ini Configuration

[env:raspberry-pi-pico]
platform = https://github.com/maxgerhardt/platform-raspberrypi.git
board = pico
framework = arduino
board_build.core = earlephilhower
monitor_speed = 115200

Compilation and Flashing

cd pico_platformio_touch_mouse

# Build firmware binary (.uf2)
pio run

# Automatic flash (with Pico in BOOTSEL mode)
pio run --target upload

The compiled UF2 is placed in .pio/build/raspberry-pi-pico/firmware.uf2.

Behavior & Feedback

• On first contact, the cursor smoothly synchronizes with screen bounds.
• Moving fingers generate relative velocity vectors sent to the host via Mouse.move(dx, dy).
• The onboard LED on GPIO 25 dynamically dims via hardware PWM when pressure is applied, giving physical feedback to the user.