This Arduino ICSP programmer has been made from Alumide, a strong plastic with aluminum fibers. The cover is made from translucent POM, illuminated by three rings of in total 27 LEDs.

The arduino R3 pinout includes an IORef pin which will be 5v on a 5v arduino but 3.3v on a 3.3v arduino. Any IC’s on the shield should run at IORef. Report comment. Reply. F says: ...

The Arduino Nano itself is the most basic and oldest of the group, and just like its many iterations, it's designed to work primarily with breadboards, making it a great tool for prototyping.