Not exactly schematics, but [Duckman] has some Arduino pinout diagrams he made using ASCII-art. These could be useful when pasted into source code as comments, documenting the pinouts for your ...

For years, there has been a clear distinction between the Arduino and Raspberry ... unlike the Nano (you can refer to the Pico pinout guide to avoid confusion). The Nano and Pico do have some ...

Despite the differences in size and microcontroller, the Arduino Nano and Micro share some similar pinout configurations. They both have two GND pins, two reset pins, one AREF pin, and three power ...