Build a Human Reflex Tester: Arduino Uno Reaction Time Psychology 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.

Imagine creating a device straight out of a cognitive psychology lab — a random LED flash, your reflex on a button, and your reaction time captured in milliseconds. This kit transforms curiosity into a fully functional reaction timer that automatically calculates mean, minimum, and maximum response times across multiple trials. It’s a hands-on STEM project that turns abstract statistics into a tangible experiment you can share with friends and teachers.

What You'll Build

You’ll assemble a self-contained reaction time tester. Press a start button and the Arduino waits a random delay (1–5 seconds), then lights the LED. As soon as you press the response button, the Arduino measures your reaction time and displays it on the 16x2 LCD. After a set of trials, the screen automatically shows the average, fastest, and slowest times — exactly like a professional psychology experiment, minus the expensive lab equipment.

What You'll Learn

• How reaction time experiments work in psychology and neuroscience
• Wiring a 16x2 LCD with an I2C backpack for clear data output
• Programming an Arduino to generate random delays and measure real-time button presses
• Calculating and displaying mean, minimum, and maximum statistics from live data

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit is designed for CBSE Class 11-12 students building psychology or physics projects, ATL Tinkering Lab innovators, and young B.Tech ECE/EEE students exploring human-computer interaction. It’s also perfect for Smart India Hackathon prototypes that need a quick, reliable reaction timer. Even kids as young as 8 can follow the guided build thanks to the AI companion, and the statistics component makes it a favorite in IIT/NIT/VIT summer camps and hobbyist groups.

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.