The story for this one starts a few months ago, when [John Green] released his PICO-GB project. His code allowed the Raspberry Pi Pico to stand in for a Game Boy cartridge, complete with a simple ...
The Raspberry Pi Pico is fitted with the Raspberry Pi ... unlike the Nano (you can refer to the Pico pinout guide to avoid confusion). The Nano and Pico do have some pinout similarities, though.
If you're looking at comparing the Raspberry Pi Pico to Arduino boards, though they're broadly similar, they use different programming languages and have different pinouts. Spec-wise, the Pico 2 W ...