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 ...

Small Breadboard / Protoboard & 28-Pin (PDIP) IC socket – 1; Your Arduino UNO board (here used as a programmer) If you go through the Arduino IDE you can see an example sketch called “Arduino as ISP”.

Sometimes, you'll also encounter Arduino tutorials in the wild that include links to a Wokwi circuit as creators and developers typically create one to show the project's schematic diagram. Other ...

The PCB Direct virtual breadboard has been created to allow anyone to create interactive virtual breadboard circuits for platforms such as Arduino, ARM, PIC, Raspberry Pi and more, with the ...