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This instructable will show you how to connect an ESP8266 WiFi Module to an Arduino UNO. EDIT: For info on how to install the ESP8266 library, see here. Step 1: Wiring. Wire the ESP8266 Module, the Arduino UNO, and the breadboard as seen in the image. When complete the pins should be connected as follows (ESP8266 pin-out is shown for reference):
Your Arduino IDE is ready to support ESP8266 modules. In the following Instructables I will show you how you can program the ESP8266 with Visuino and how you can connect multiple ESP8266 modules together to create IoT projects.
In this article, I have explained all the steps of ESP8266 programming, how to connect ESP8266 to Arduino UNO. I have also explained how to use FTDI232 USB to TTL as an ESP01 programmer with the circuit diagram.
Copy the below arduino code and paste into your Arduino IDE and upload the program to your nodemcu or any other esp devices that you are using, make sure to choose the correct port and device name from the board. also don't forget to change the SSID and password to your Wi-fi settings.