Node-RED: Lecture 3 – Basic nodes and flows

源自於 http://noderedguide.com/node-red-lecture-3-basic-nodes-and-flows/

Examples

If you want to jump ahead the examples used in this lecture are shown below. Note that examples 3.1 – 3.6 all use a common MQTT node and build on the previous examples, so you might want to read them sequentially.

Example 3.1 Receiving JSON via an MQTT message

Example 3.2 Using the switch node to handle a JSON object

Example 3.3 Using a change node to change or manipulate a message payload

Example 3.4 Using the rbe (report by exception) node

Example 3.5 Scaling input with the range node

Example 3.6 Using an mqtt output node to test the flow

Example 3.7 Using Websockets with Node-RED

Example 3.8 Sending TCP requests.