Introduction to NodeRED
summary
Node-RED is a visual flow engine running on Node.js that wires HTTP, MQTT, WebSockets and databases like Cloudant/CouchDB, with flows saved as a JSON file in ~/.node-red. The demo shows rapid prototyping: drag HTTP input, a small function node that inspects msg.payload, send to Cloudant, deploy, and it works live. Examples include blinking lights controlled from mobile via Raspberry Pi, an Enigma node for encryption, and confirmed runtime separation so UI can be optional on a Raspberry Pi.
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chapters (8)
- 0:00Introduction to Node-RED
- 0:51Visual flow programming
- 3:20Deployment and customization
- 5:22Message passing and architecture
- 7:20Extending Node-RED
- 9:43Runtime and storage mechanics
- 12:23Use cases and performance
- 16:07State management and hardware
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29mNode Generator: Realizing Rapid Low-Code Prototyping of Node-RED Connectors