Arduino Uno Rev3 Microcontroller Programmable Development BoardOverview Arduino Uno is a microcontroller board based on the ATmega328P. It has 14 digital input output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator (CSTCE16M0V53 R0), a USB connection, a power jack, an ICSP header and a reset button. Simply connect it to a computer via USB cable (not included) or power it with an AC DC adapter (not included), or battery holder (not included) to get started. You can tinker