This is a wiring diagram that [Soranne] put together when developing a method of programming PIC microcontrollers using an Arduino board. You can see that he takes care of the 12V issue by connecti… ...

Arduino Nano R4 pinout diagram Two SKUs are offered for the Arduino Nano R4: ABX00143 with headers ideal for breadboard projects ($13.30) and ABX00142 without headers ($12.10) to solder the board to a ...