Simple Lie Detector Kit: Build a Skin-Resistance Lie Detector Circuit for Kids

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Have you ever wondered if you could build a machine that tells when someone is nervous? With this simple lie detector kit, kids will build a circuit that lights up when the skin’s resistance drops — just like in spy movies! It’s a fascinating way to discover how our bodies react to stress.

What You'll Build

A working lie detector with LED indicators that glow brighter when someone’s fingers get sweaty. Connect the copper probes, ask questions, and watch the LED change as the galvanometer-style circuit reveals tiny shifts in skin moisture. It’s a playful introduction to real biometric sensors.

What You'll Learn

• How skin resistance drops when a person sweats due to nervousness
• How a transistor circuit amplifies tiny current changes
• Basic breadboarding and identification of resistors, LEDs, and transistors
• The science behind galvanic skin response used in polygraphs

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for young explorers in Class 3 to 5 who love spy gadgets and science mysteries. Perfect for ATL Tinkering Lab activities, school science exhibitions, or weekend STEM fun at home. This kit gives beginners a safe, hands-on start in electronics, just like the projects introduced in CBSE schools.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.