MEGA2560 R3 without Arduino LOGO ,with USB cable The Arduino Mega is a microcontroller board based on the ATmega2560. It has 54 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. The Mega is compatible with most shields designed for the Arduino Duemilanove or Diecimila. Features • ATmega2560 microcontroller • Input voltage - 7-12V • 54 Digital I/O Pins (14 PWM outputs) • 16 Analog Inputs • 256k Flash Memory 16Mhz Clock Speed