ATL Lie Detector Galvanometer Kit
Build a Skin Conductance Lie Detector with Arduino — ATL Classroom Lab Kit
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Turn any classroom or ATL lab into a mini polygraph centre. This kit lets students measure the tiny changes in skin conductance that accompany emotional arousal—sweat gland activity spikes when a person feels stress, and that’s precisely what you’ll graph. By crafting yes/no question protocols and watching the Arduino serial plotter draw real-time conductance curves, young scientists uncover the hidden link between mind and body, making abstract psychology and electronics concepts suddenly tangible.
What You'll Build
A working galvanic skin response (GSR) detector that uses two copper plate probes pressed against the fingers. A high-impedance circuit feeds the skin’s conductance variations into an ADS1115 16-bit ADC, which an Arduino Nano reads over I2C and streams as a live plot. Within a 2-3 hour build session, you’ll have a cable-connected, solderless instrument that reveals stress signatures during questioning—perfect for classroom demos, science exhibitions, and inquisitive young minds who want to see if their friend really ate the last chocolate.
What You'll Learn
- How to measure bio-signals via skin conductance (electrodermal response) and relate them to stress arousal.
- Wiring and communicating with the ADS1115 16-bit ADC over I2C using an Arduino Nano.
- Programming the Arduino IDE to stream sensor values and interpret them on the serial plotter.
- Designing a controlled psychological experiment: crafting neutral vs. critical questions and observing plotted conductance patterns.
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 1 |
| Copper Plate Probes | 2 |
| 10MΩ Resistors | 3 |
| ADS1115 ADC | 1 |
| Half Breadboard | 1 |
| MiniUSB Cable | 1 |
| M-M Wires | 15 |
| Graph Paper | 5 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
Designed for ATL tinkering lab students (Class 6–10) exploring bio-electronics intersections, CBSE Class 11–12 psychology or physics practicals, and first-year B.Tech ECE/EEE students at NIT, VIT, or BITS campuses who need a quick physiology sensor project. Also hits the mark for Smart India Hackathon junior challenges and school science fairs where a live lie-detection demonstration always draws a crowd.
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.
What if I get stuck during the build?
Scan the QR code to launch the AI companion for step-by-step debug, or reach us on WhatsApp — we’ll help you get that serial plotter tracing within minutes.
Can I record skin conductance data for a science report?
Yes, the serial monitor streams numerical values; you can save them to a spreadsheet and use the included graph paper to draw publication-ready plots.
Is any soldering required?
No, the entire circuit is built on a half breadboard with jumper wires. It’s completely solderless and safe for ages 10 and up.
How accurate is the lie detection?
The kit demonstrates skin conductance as a stress proxy, not a forensic lie detector. It’s a powerful educational tool to discuss polygraph principles and biofeedback, but interpretations should stay within a learning context.
Measure skin conductance as a proxy for stress response — graph changes during yes/no questions on Arduino serial plotter.
What's in this kit
- Arduino Nano
- Copper Plate Probes x2
- 10MΩ Resistors x3
- ADS1115 ADC
- Half Breadboard
- MiniUSB Cable
- M-M Wires x15
- Graph Paper x5
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items