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Day 22 of 100

Blynk Fan Control

Motors · Board: Pi Pico · Day 22 of 100

Switch a DC brushless fan from the Blynk app through a relay on the Pico W. Phone-controlled cooling in minutes.

How it works

A button in the Blynk app sends a cloud message down to the Pico W, which switches a relay connected to the fan. The relay handles the fan's higher current while the board only handles logic-level signals. Phone-controlled airflow with two components doing what each does best.

What you'll learn

  • Switching inductive loads
  • Cloud-based actuation
  • Relay driver stages
  • Separating logic from power

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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