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 ...

LCD interface: Normally, Arduino boards do not have an LCD on board. However, for development work it is very essential. Provision of an onboard LCD is very easy because no extra wiring or component .

KiCad and Fritzing are two that will take you from schematic capture to PCB layout. However, there’s been limited options for creating wiring diagrams. Often these are created in Microsoft’s ...

Please feel free to copy, update and add to and use where you see fit. I use the “Wiring diagram:” to link the sensor hardware to the Arduino pin. For the pin used, place an asterisk between the ...

Contains the 2D layout of the board with Arduino Nano's standard size as well as the routing, alignment, and guide comments.