Microcontroller: ATmega328 Operating Voltage: V5 Input Voltage (recommended): 7-12V Input Voltage (limits): 6-20V Digital IO Pins: 4 (of which 6 provide PWM output) Analog Input Pins: 6 DC Current per IO Pin: 40mA DC Current for 3.3V Pin: 50mA Flash Memory: 32 KB (ATmega328) of which 0.5 KB used by bootloader SRAM: 2 KB EEPROM: 1 KB Clock Speed: 16 MHz
