Node-RED

Node-RED is a graphical programming language for building connected objects (and many other things). Node-Red is an Open Source project (and free) supported by IBM. Programmed with Node-RED binder functions presented in the form of bricks. The data stream passes from one treatment to the other (from one function to the other). Some functions offer settings that simply set using a choice list or a field to fill (eg an API key to a weather service). There are hundreds of plugins in all areas, save data to a database (MySQL, MongoDB …) control the I/O of Arduino or Raspberry PI (with Johny Five plugin for example) add a graphical interface (UI) to draw graphics, display gauges, control a relay with a button …

ESP Easy + MQTT + Node-RED: bi-directional communication, dashboard

node-red mqtt esp easy mqtt mosquitto publish subscribe gpio dht22

ESP Easy integrates several default communication protocols, several based on MQTT (Domoticz MQTT, OpenHAB MQTT and PiDome MQTT). These protocols are very focused “home automation servers”. If you develop your own applications (home automation or others) with Node-RED, we will see how to communicate with connected objects developed with ESP8266 …

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