The Arduino Uno R3 WiFi (ATmega328P+ESP8266) is an all-in-one development board that combines a standard Arduino Uno and a wireless ESP8266 WiFi chip on a single circuit board. It is designed to easily build internet-connected hardware and Smart Home projects without using messy jumper wires.
The board features a Micro-USB port for power and data, uses the reliable CH340G serial chip, and can be powered with 5V to 12V DC. It has 14 digital pins, 6 analog pins, and preloaded software that lets you turn pins on or off directly through any mobile or PC web browser
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