Arduino UNO R3. Arduino Uno Board Atmega 328 Rev3 Arduino board with Atmega 328 chip. Comes with original box and includes a compatible USB cable. 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, a USB connection, a power jack, an ICSP header and a reset button
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