Temperature sensor data visualisation with Node-RED: Difference between revisions
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= Learning Objectives = | = Learning Objectives = | ||
* Learn how to subscribe to a MQTT using the Node-RED MQTT-in node | * Learn how to subscribe to a MQTT using the Node-RED '''MQTT-in''' node | ||
* Learn how to extract specific sensor data using the Node-RED function node. | * Learn how to extract specific sensor data using the Node-RED '''function''' node. | ||
* Learn how to create a '''Dashboard''' in Node-RED to monitor live data. | |||
Revision as of 19:01, 12 April 2022
Overview
This lesson assumes that a temperature sensor is sending data to The Things Network. In this lesson we will use the MQTT protocol to subscribe to data transmission events. We will create a program in Node-RED to subscribe to the data transmissions and to graph the data coming from the sensor using the in-built Dashboard function in Node-RED.
Learning Objectives
- Learn how to subscribe to a MQTT using the Node-RED MQTT-in node
- Learn how to extract specific sensor data using the Node-RED function node.
- Learn how to create a Dashboard in Node-RED to monitor live data.