Introduction‎:‎ The Arduino Mega 2560 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 AC‎-to‎-DC adapter or battery to get started‎.‎ This board is a clone of the Arduino board and is compatible with most shields designed for the Arduino Duemilanove or Diecimila‎.‎ Specification‎:‎ Microcontroller‎:‎ ATmega2560 Operating Voltage‎:‎ 5V Input Voltage ‎(‎recommended‎)‎‎:‎ 7‎-12V Input Voltage ‎(‎limits‎)‎‎:‎ 6‎-20V Digital I/O Pins‎:‎ 54 ‎(‎of which 14 provide PWM output‎)‎ Analog Input Pins‎:‎ 16 DC Current per I/O Pin‎:‎ 40 mA DC Current for 3.3V Pin‎:‎ 50 mA Flash Memory‎:‎ 256 KB of which 8 KB used by bootloader SRAM‎:‎ 8 KB EEPROM‎:‎ 4 KB Clock Speed‎:‎ 16 MHz Package Included‎:‎ 1x Mega2560 R3 board 1x USB cable