Examples for the Raspberry Pi PICO Board with CPU RP2040 using the Arduino-IDE with Exensions by Earle Philhower
Add this to your Arduino Configuration as additional Board URL:
..,https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
Visit https://pico.raspi.vom-kuhberg.de