(+1Month Warranty) Arduino Pro Mini ATMEGA328P 5V/16M 328 Mini ATMEGA328 5V 16MHz [ElectricA]

ATmega328 running at 16MHz with external resonator (0.5% tolerance)
0.8mm Thin PCB
USB connection off board
Supports auto-reset
5V regulator
Max 150mA output
Over current protected
Weighs less than 2 grams!
DC input 5V up to 12V
On board Power and Status LEDs
Analog Pins: 8
Digital I/Os: 14

The Arduino Pro Mini is a microcontroller board based on the microchip ATmega328. The board consists of 6 analog inputs, 14 digital input/output pins (of which 6 can be used as PWM outputs), a reset button, an onboard 8Mhz resonator, and holes for mounting pin headers. A six-pin programming header can be connected to an FTDI cable or Spark fun breakout board to provide USB power and program the board.