The Onboard, 150 ma 5 v Regulator.
8 k Flash Memory (about 6k after bootloader).
The I2C and SPI (vis USI).
The Power LED and the Test/Status LEDs.
Built-in USB and serial were debugging).
Support for the Arduino IDE 1.0 + (OSX/Windows/Linux)
Microcontroller ATmega328 (SMD) – Interface CH340G
Operating Voltage: 5V
Input Voltage (recommended): 7-12V
Input Voltage (limits): 5-20V
Digital I / O Pins 14 (of which 6 provide PWM output)
Analog Input Pins: 6
Wide supply voltage: 4.5 V to 12 V.
Max supply current: 600 mA per motor.
The driver two holes of 3 mm dia.
Male burg-stick connectors for supply, ground and input connection.
Screw terminal connectors for easy motor connection.
High noise immunity inputs.