characteristic:

• ATMEGA32U4 running in 5V/16MHz
• Supported by V1.0.1 IDE
• Micro USB interface programming on the board of directors
• 10 4 bit ADC pins
• 12 digital I / O (5 PWM capability)
• Rx and Tx hardware serial connection

explain:    

This little board all the adjacent neat skill: 4 Channel 10 bit ADC, five PWM pin, 12 DIO and hardware serial connection RX and TX you are familiar with. Running on 16MHz and 5V, this committee will remind you of a lot of other compatible boards that you like, but this little guy can go anywhere. There is a voltage regulator on board, so it can accept up to 12VDC. If you are supplying an unstable power supply board, be sure to connect to the “RAW” not on the VCC pin.This latest version of the modified silk error, so pin 14 is the correct mark. We have also added a PTC fuse and diode protection to thepower circuit and to correct the RX and LED TX circuits.