Miniduino is a small (19x40x3,5 mm, pin-strip and USB connector excluded) Arduino board with minimal hardware, but with access to all I/O like the Nano board and equipped with a USB connector with direct insertion integrated into the PCB: practically an Arduino Pen Drive.
The board is based on the Atmel ATmega32U4 microcontroller, which is the same one used on the Arduino Leonardo, Micro and other boards; not for nothing, thanks also
