For years, Raspberry Pi ... Pico communicate with unique unsupported hardware (those that can't be connected via standard protocols like UART or I2C). It can also be used to convert some GPIO pins ...

With just a Raspberry Pi Pico ... on the five wires that will eventually snake their way to the GPIO pins of the Pi Pico, you’ll need to strip the console all the way down to the main board.

As a minimalist alternative for these use cases [fhdm-dev] created Scoppy, a combination of firmware for the Raspberry Pi Pico and an Android ... pulling certain GPIO pins high or low.

The P42 Pico2 M.2 may look like an M.2 module, but it's actually a Raspberry Pi RP2350 development board in M.2 2230 form ...