Node-RED Relay Control
Cloud · Board: Pi Pico · Day 87 of 100
Switch relays from Node-RED flows over MQTT on the Pico 2W. Industrial-style control logic, drag-and-drop.
How it works
Relay logic lives in Node-RED flows: dashboard switches and automation rules publish MQTT commands, and the Pico 2W executes them on its relays. Change the behavior by rewiring nodes in the browser — no firmware reflash to alter the logic.
What you'll learn
- Visual control logic
- MQTT command topics
- Logic without reflashing
- SCADA-style supervision
Full project: code, wiring diagram & Wokwi simulation
The complete build guide lives in the original repo. Ours is a summary — the real thing is one click away.
Open full project on GitHub ↗Summary by SkillShop. Project by Kritish Mohapatra — code and diagrams belong to the original repo.
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