Acoustic Event Logger Kit with Arduino Uno + LED
Acoustic Event Logger Kit: Capture, Timestamp, and Log Transient Sound Events with Arduino
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform an Arduino Uno into a precision acoustic event logger that doesn’t just detect sound—it timestamps every transient spike, measures its duration, and records peak amplitude to a microSD card using a real-time clock. Whether you’re monitoring animal calls in the field, diagnosing machine faults in a workshop, or logging nocturnal disturbances for a research project, this kit delivers a self-contained, battery-powered solution that turns raw audio into structured data you can analyze offline.
What You'll Build
You’ll assemble a standalone logger around the MAX9814 microphone amplifier, which you’ll calibrate to trigger only when sound pressure exceeds a threshold you set. Each event captures a time-stamp from the DS3231 RTC, the duration of the loud spike, and its peak amplitude. Live readings stream to a 0.96-inch OLED, while all events write sequentially to a text file on the microSD. The entire system runs on a 9V battery, so you can deploy it anywhere without a computer.
What You'll Learn
- Configure a MAX9814 microphone amplifier for transient event detection with adjustable gain and threshold
- Interface a DS3231 real-time clock to timestamp acoustic events with millisecond accuracy
- Write structured data—timestamp, duration, peak amplitude—to a microSD card using Arduino’s SD library
- Display real-time event counts, thresholds, and status on an OLED screen
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| MAX9814 Mic Amp | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| 10kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| M-M Wires | 20 |
| 9V Battery Snap | 1 |
| Soldering Iron | 1 |
| Solder Wire | 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 suits B.Tech ECE and EEE students building IoT or signal-processing projects, teams in Smart India Hackathon working on environmental sound monitoring, and hobbyists designing wildlife bioacoustics loggers. It also aligns with ATL Tinkering Lab challenges for advanced learners and final-year engineering prototypes at IITs, NITs, and VIT.
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 your kit to start a conversation with the AI companion trained on this exact project. It walks you through assembly and debugging, and you can escalate to our engineering team via WhatsApp if needed.
Can I adjust the sound threshold and logging frequency?
Yes, the threshold is set in code; the AI companion shows you how to modify it. You can also configure the minimum time between events to avoid logging echoes or sustained loud noises.
How do I view the logged data?
Remove the microSD card and read the CSV file on any computer. Each line contains the event timestamp, duration in milliseconds, and peak amplitude in arbitrary units ready for plotting in Excel or MATLAB.
Does this work outdoors for long-term monitoring?
With a 9V battery, the logger can run for several hours. For extended field deployment, the AI companion guides you to add a solar panel or larger battery pack, and we show how to weatherproof the enclosure.
MAX9814 detects transient events above threshold and logs timestamp, duration and peak amplitude to SD with RTC.
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