Node-RED Virtual LED
Cloud · Board: Pi Pico · Day 85 of 100
A Node-RED dashboard flips a virtual LED over MQTT with Mosquitto in Docker on the Pico 2W. Flow-based IoT without code.
How it works
In Node-RED you wire a dashboard button to an MQTT output node with drag and drop — no code. Pressing it publishes to the Mosquitto broker running in Docker, and the Pico 2W's subscribed LED follows. Flow-based IoT: the program is a diagram.
What you'll learn
- Flow-based programming
- MQTT broker setup
- No-code IoT logic
- Docker-hosted services
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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