OpenPLC Relay Control in Node Red Using MQTT
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In our previous tutorials we were able to control a Pump over the Internet with ESP8266 Programed with OpenPLC via MQTT. In this part we will build a cool dashboard to control the Pump with the help of Node Read
What exactly is node red
Node red is a flow-based program that makes it easy to create event-driven application in a simple and intuitive way. It can run on devices such as the raspberry Pi or in Cloud environments making it a very versatile tool. It deals with all the complex code allowing users to focus on salving the task at hand.
Previous Video: • Receiving MQTT Messages with OpenPLC