The original Raspberry Pi Pico uses an RP2040 dual Cortex M0+ microcontroller. When introduced, it provided significantly more computing power and RAM than other boards in the price range.

The Raspberry Pi Pico W adds a WiFi and Bluetooth capability.

The Philhower core for Arduino originally focused on RP2040-based boards. When the RP2350 arrived with the Raspberry Pi Pico 2 (and 2 W), the Arduino board support package was augmented with support for that chip also.

The following pages describe how to set things up for a Raspberry Pi Pico with RP2040. The process also applies, with appropriate changes, for other boards based on the RP2040 microcontroller.