ESP8266 Tutorial AT Commands

Опубликовано: 18 Май 2026
на канале: AllAboutEE

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Learn to use your ESP8266 to connect to the internet and retrieve information from the web. In this tutorial I will teach you how to use the AT commands of your module, how to connect to a router, and then how to retrieve weather data from a website API.

Equipment Used:

RealTerm Serial/TCP Terminal:
http://sourceforge.net/projects/realt...

5V and 3.3V Power Supply:
https://www.sparkfun.com/products/10804

Wall Adapter Power Supply – 9VDC
https://www.sparkfun.com/products/298

FTDI to USB 3.3V Cable:
http://www.mouser.com/ProductDetail/F...

ESP8266 Wifi Module:
http://www.ebay.com/itm/ESP8266-ESP-0...

Steps To Connect and Get Information From API:

1. Power-up circuit
2. Reset ESP8266 module: AT+RST\r\n
3. Join Access Point: AT+CWJAP=”yourSSID”,”yourPassword”\r\n
4. Connect to API: AT+CIPSTART="TCP","api.openweathermap.org",80\r\n
5. Tell ESP8266 the length of the HTTP GET request string: AT+CIPSEND=85\r\n
6. Give ESP8266 the HTTP GET request string: GET /data/2.5/weather?q=San%20Francisco,us HTTP/1.0\r\nHost: api.openweathermap.org\r\n\r\n\r\n

Resources:

Wiki:
https://nurdspace.nl/ESP8266

Datasheet:
http://wiki.iteadstudio.com/images/4/...

OpenWeather Map API:
http://openweathermap.org/current