Arduino Uno Radioactivity vs Distance Experiment Kit - Verify the Inverse Square Law

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

Radiation follows the inverse square law: double the distance, quarter the intensity. This kit lets you assemble a Geiger counter that logs CPM vs. distance from a low-level source (not included) and displays the decay curve on an OLED. Designed for CBSE Class 12 investigatory projects and STEM tinkering, it transforms abstract radiometry into a hands-on data logging experiment.

What You'll Build

You'll build an Arduino-based Geiger counter that uses a pulse-counting module and a real-time clock to log timestamped CPM data onto a microSD card. The OLED screen shows live counts and entered distance, revealing the inverse square relationship instantly. The entire breadboard setup runs on a 9V battery, perfect for lab or field work.

What You'll Learn

• Convert Geiger tube pulses to counts per minute (CPM)
• Subtract background radiation for accurate source measurements
• Code the OLED to display live dose rate and distance
• Log timestamped data for inverse square law analysis
• Apply Poisson statistics to assess counting uncertainty

Kit Contents

Geiger counter measures radiation at different distances from source. Verifies inverse square law.

What's in this kit

• Arduino Uno R3
• Geiger Counter Module
• DS3231 RTC
• MicroSD Module
• 0.96in OLED
• 10k? Resistors x5
• 100nF Caps x5
• 400-pt Breadboard
• M-M Wires x20
• 9V Battery Snap