Features:

ATMEGA32U4 runs at 5V/16MHz
Supported Arduino IDE V1.0.1
Micro USB interface programming on the board
4 10-bit ADC pins
12 digital I/O (5 PWM capability)
Rx and Tx hardware serial connection

Description:  

This small board does all the neat neighbor Arduino skills: 4-channel 10-bit ADC, 5 PWM pins, 12 DIO and hardware serial connection Rx and Tx you are familiar with. It runs at 16MHz and 5V, but this little guy can go anywhere. There is a voltage regulator on the ship, so it can accept voltages up to 12VDC. If you are supplying an unstable power supply board, be sure to connect to the "RAW" not VCC pin. This latest version fixes silk errors so that pin 14 is the correct marking. We also added a PTC fuse and diode to protect the power supply circuit and corrected the RX and TX LED circuits.