Decibel vs Distance Study Kit with Arduino Uno
Decibel vs Distance Study Kit – Prove the Inverse Square Law with Arduino Uno
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
When you move a sound source away, its loudness drops predictably. This kit turns that classroom physics concept into a hands-on experiment. You’ll assemble a microphone circuit around the MAX9814 amplifier, set up an Arduino Uno, and watch the decibel reading fall as you increase the distance from the active buzzer—plotting the inverse square law in real time on a 16x2 LCD.
What You’ll Build
A portable sound level meter that captures dB readings at precisely measured distances and displays them instantly. By the end of the 2–3 hour build, you’ll have a working instrument for your school science exhibition or CBSE physics practical, complete with a timestamp from the DS3231 real-time clock for logging data.
What You’ll Learn
- Calibrating a microphone amplifier for relative sound level measurements
- Interpreting the inverse square law through real data
- Interfacing I2C LCD displays with Arduino
- Using breadboard wiring techniques without soldering
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| MAX9814 Mic Amp | 1 |
| Active Buzzer | 1 |
| DS3231 RTC | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| 100nF Caps | 5 |
| 10kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 9V Battery Snap | 1 |
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
This kit is designed for CBSE Class 11–12 students preparing investigatory projects in physics, participants in ATL Tinkering Lab challenges, and B.Tech 1st-year students exploring sensor integration. If you’re presenting at a school science fair or working towards a Smart India Hackathon hardware prototype, the pre-tested components and AI guidance remove the typical hurdles of multi-vendor sourcing and debugging.
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 on the box to access your AI companion trained on this exact kit; it walks you through every connection and code upload. If you prefer human help, our WhatsApp support line responds within a few hours.
Do I need any prior experience with Arduino?
No. The kit includes pre-loaded code and a beginner-friendly breadboard layout. The AI companion explains each step, making it suitable for ages 10 and up with minimal supervision.
Can I log the distance and dB data to a computer?
Yes. The Arduino Uno's serial monitor displays real-time readings, which you can copy into a spreadsheet for creating graphs. The DS3231 RTC adds timestamps to each measurement.
Is the microphone calibrated for absolute decibel readings?
The MAX9814 gives relative sound pressure level changes, perfect for demonstrating the inverse square law. For educational use, the kit provides a reference calibration procedure you can perform with a smartphone app.
MAX9814 at measured distances from buzzer records dB. Plots inverse square law decay.
What's in this kit
Other projects you can build
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