Microcontroller ATmega328P
Operating Voltage 5 Vdc (Bridge-Rectifier to Vdc)
Input Voltage (recommended) 7-12 Vdc
Input Voltage (limits) 6-20 Vdc (select power by jumper)
Digital I/O Pins 14 (which 6 provide PWM output)
Analog Input Pins 6
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB (ATmega328) of which 2 KB used by bootloader
SRAM 2 KB (ATmega328)
EEPROM 1 KB (ATmega328)
Clock Speed 16 MHz (Crystal)