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Day 37 of 100

XIAO 4-LED Controller

Lighting · Board: XIAO · Day 37 of 100

A CustomTkinter desktop app switches four LEDs on the tiny XIAO ESP32-S3. Polished GUI control for a pocket-sized board.

How it works

A CustomTkinter desktop window sends short text commands over USB serial, and the XIAO ESP32-S3 parses each one to switch its four LEDs. The tiny board does the hardware work while the PC provides a polished interface neither could offer alone.

What you'll learn

  • Serial command protocols
  • Desktop GUI control
  • USB-serial bridging
  • Split UI/hardware 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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