Arduino Pro

The Arduino Pro is a microcontroller board based on the ATmega168 or ATmega328.

The Pro comes in both 3.3V / 8 MHz and 5V / 16 MHz versions.

It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a battery power jack, a power switch, a reset button, and holes for mounting a power jack, an ICSP header, and pin headers.

A six pin header can be connected to an FTDI cable or Sparkfun breakout board to provide USB power and communication to the board.