Elecrow UNO R3 Board ATmega328P ATMEGA16U2 with USB Cable for Arduino

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This microcontroller board comes with two supply options: external or USB. It contains internal circuitry in order to automatically choose the best power supply. The external power supply can be an AC-DC adapter or a battery, with a voltage between 6V and 12V. This board uses ATMega328P as main microcontroller and an ATMega8U2ith USB Cable for Arduino