There are several ESP8266 based modules available, the ones I have are WiFi+ ESP-12F by Doiting.
ESP8266 WiFi+ ESP-12F DOITING Pinout
![](https://haibat.com/wp-content/uploads/2021/08/ESP8266pinout-1024x771.jpg)
Link for Adding ESP8266 boards
http://arduino.esp8266.com/stable/package_esp8266com_index.json
Board Choice in Arduino IDE
![](https://haibat.com/wp-content/uploads/2021/08/image-23.png)
Baud
Default is 74880
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