Finger Controlled LED

March 23, 2026 Watch Tutorial

Wiring Schematic

Source Code

Arduino / C++

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Step-by-Step Build Instructions

Project Overview

This project allows you to control an LED using hand gestures detected by your webcam. Python tracks your hand vectors, while the Arduino handles physical execution over a USB Serial link.

Pro Tip: Ensure your room has good lighting! MediaPipe tracking precision drops significantly in low-light environments, which can cause erratic LED switching behaviors.

Circuit Connections

Main Layout Connections

Connect the Positive Leg (Anode) of your LED to Arduino Pin 13 through a 220Ω Resistor.
Connect the Negative Leg (Cathode) directly to an Arduino port.

Hardware Required

LED X 5
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