Acoustic Gunshot Localisation System Variant 35 Kit with Arduino Mega
Deploy a Real-Time Acoustic Gunshot Localisation System with Arduino Mega TDOA Processing
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This advanced kit equips you to build a four-microphone array that captures the acoustic signature of a gunshot and computes the time-difference-of-arrival (TDOA) to estimate the source on a 2D plane. Designed for perimeter surveillance, critical infrastructure protection, and defence technology research, the system delivers actionable intelligence within seconds of a shot being fired.
What You'll Build
A fully functional gunshot detection and localisation unit ready for deployment in building corners. Four MAX9814 microphones feed high-fidelity audio into the Arduino Mega, where the TDOA algorithm calculates the coordinates of the sound origin. The DS3231 RTC timestamps each event, the MicroSD module creates an audit log, and the SIM800L GSM module sends immediate SMS alerts to a predefined security number. Live coordinates appear on the 2.4-inch TFT display for on-site verification.
What You'll Learn
- Implementing TDOA-based 2D acoustic source localisation on an Arduino Mega
- Calibrating and synchronising a four-microphone array for sub-millisecond time accuracy
- Integrating GSM alerting, SD card logging, and real-time display into a standalone embedded device
- Managing power regulation and enclosure design for field-deployable surveillance electronics
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega 2560 | x1 |
| MAX9814 Mic Amp | x4 |
| DS3231 RTC | x1 |
| MicroSD Module | x1 |
| SIM800L GSM | x1 |
| LM2596 Buck Converter | x1 |
| 2.4in TFT ILI9341 | x1 |
| 10kΩ Resistors | x10 |
| 100nF Caps | x15 |
| PCB Prototype Board | x3 |
| Enclosure Box | x1 |
| 12V 3A PSU | x1 |
| Soldering Iron | x1 |
| Solder Wire | x1 |
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
Security system integrators upgrading building surveillance, B.Tech ECE final-year students developing acoustic localisation capstone projects, defence technology researchers at IITs or DRDO, Smart India Hackathon teams working on perimeter security solutions, and professionals building proof-of-concepts for critical infrastructure monitoring.
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 access the AI companion trained specifically on this gunshot localisation system, or reach out on WhatsApp – we’ll guide you through troubleshooting step by step.
How accurate is the localisation?
With proper microphone placement and calibration, the TDOA algorithm can estimate the source within a 2–3 metre radius in a 30×30 metre area. Accuracy improves with higher sample rates and low-latency audio capture.
Can the system distinguish a gunshot from other loud sounds?
The firmware includes a basic energy and frequency thresholding to reject sustained noises, but for field deployment you can extend it with a machine-learning classifier. The AI companion provides notes on integrating a simple pulse-detection model.
Does the kit include everything for a deployable unit?
Yes, the enclosure, power supply, and all mounting hardware are included. You will need to provide a SIM card for SMS alerts and a MicroSD card for logging.
Four MAX9814 mics at corners of a building compute TDOA to estimate gunshot origin in 2D plane.
What's in this kit
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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