The Arduino IoT Cloud and a Node-RED Hello World example
In this section, we will build on our project by adding some extra functionality to our system via Node-RED. This will help you to understand how you can use Node-RED to integrate non-compatible devices with the Arduino IoT Cloud.
Node-RED will monitor the LED status based on a value that is either true or false. On the basis of this status, Node-RED will send the command to another Thing variable called LEDStatus, which will be linked to the Status widget, which shows the LED as being either on or off. Using this example, you will learn how to read data from a Thing property/variable and how to write data to a Thing property/variable.
Node-RED has a module that was officially developed by Arduino for connectivity with the Arduino IoT Cloud. It provides five nodes to carry out different types of operations. For further details, visit https://flows.nodered.org/node/@arduino/node-red-contrib-arduino-iot-cloud.
