This product is no longer for sale, it has been replaced with Seeeduino Mega.Seeeduino Mega is a microntrolller board based on ATmega1280, derived from Arduino Mega with changes in pursuit for small form factor, flexibility and functionality.It has 70 digital input/output pins (of which 14 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. Seeeduino Mega is compatible with most shields designed for the Arduino Duemilanove or Diecimila, also share accessories with Seeeduino family.