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 ...

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 ...

Somebody on Facebook recently asked about finding an easy-to-use shield helpful for experimenting with Arduino wherein he wants to try a single one instead of a number of luxurious shields. Luckily, ...