Using a relay with the ESP8266 is a great way to control AC household appliances remotely. This tutorial explains how to control a relay module with the ESP8266 NodeMCU. We’ll take a look at how a relay module works, how to connect the relay to the ESP8266, and build a web server to control a relay remotely (or as many relays as you want).
Hardware Required
- NodeMCU
- Relay Module
- Breadboard
- LED (optional)
- Micro USB cable
- Connecting Wires
Software Required
- Arduino IDE (with ESP8266 Library installed)
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