Arduino Mega 2560 Rev3 Development Board – 54 Digital I/O, 16 Analog Inputs, 4 UARTs

Your project's outgrown the Uno. You need more pins, more serial ports, and a board that still takes your existing shields. The Arduino Mega 2560 Rev3 delivers: 54 digital I/O (15 PWM), 16 analog inputs, four hardware UARTs, all on a 16 MHz ATmega2560. Plug in USB or a DC adapter, load your sketch, and you're running. Compatible with most Uno and Duemilanove shields, so nothing in your current build breaks. Add to cart and get building

• 54 digital I/O pins (15 PWM-capable)
• 16 analog inputs
• 4 hardware UARTs (serial ports)
• 16 MHz ATmega2560 microcontroller
• Compatible with most Uno and Duemilanove shields
• USB connection, DC power jack, ICSP header, reset button