Adafruit IO LED Control
Lighting · Board: Pi Pico · Day 83 of 100
Toggle an LED from Adafruit IO's cloud dashboard over MQTT on the Pico 2W. Classic MQTT pub-sub in action.
How it works
Toggling a dashboard button on Adafruit IO publishes an MQTT message; the Pico 2W, subscribed to that feed, receives it and flips the LED. It is the canonical publish-subscribe loop — and the pattern behind nearly every cloud-controlled device you will ever build.
What you'll learn
- MQTT publish/subscribe
- Adafruit IO feeds
- Cloud-to-device messaging
- Topic-based architecture
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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