roto Shield V3: Wide prototyping area Seamlessly plugged into the Arduino MEGA Arduino pinout Reset button Indicator of power & status Solder components directly ICSP connector 14 pin SMD footprint (50 mils pitch) 20 pin Through Hole footprint (100 mils pitch) Mega 2560: Microcontroller: ATmega 2560 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 m A DC current for 3.3V Pin: 50 m A Flash Memory: 256 KB of which 4 KB used by bootloader SRAM: 8 KB EEPROM: 4 KB Clock Speed: 16 M Hz Package included: 1 x Mega 2560 1 x Proto Shield V3