Arduino UNO ESP8266 interfacing - How to connect Arduino UNO to ESP8266

ESP8266 is a popular board developed and introduced in 2014. It’s an Arduino compatible board that has WiFi connectivity.

In this post we’ll learn how to connect Arduino UNO to ESP8266.

First, we’ll learn how to configure and upload code into ESP8266.

Then, we connect it to Arduino UNO to act like a serial WiFi shield.

Components

Arduino UNO

ESP8266

Logic Level Converter Circuit

Connection 

Circuit

Code

https://github.com/Circuito-io/ESP8266_SoftwareSerial/commit/f5591181490751700dc01c32155d7543d0c04f49

Source: Arduino Website

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