Specifications:
Microcontroller:ATmega2560
Clock Speed:16 MHz
EEPROM:4 KB
SRAM:8 KB
Flash Memory:256 KB of which 8 KB used by bootloader
Operating Voltage:5V
Input Voltage (recommended):7-12V
Analog Input Pins:16
Digital I/O Pins:54 (of which 14 provide PWM output)
DC Current for 3.3V Pin:50 mA
DC Current per I/O Pin:40 mA
Size:100*55mm