Bird Call Identifier Kit with ESP32
Bird Call Identifier Kit with ESP32 – Real-Time Echo Cancellation for Wildlife Research
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Field biologists and audio researchers will construct a portable device that captures clean bird vocalizations even while a speaker plays attractant calls. The dual INMP441 I2S microphone array feeds an ESP32 running an NLMS adaptive filter, effectively subtracting the speaker’s output in real time. This eliminates the acoustic feedback loop that plagues conventional playback-and-record setups, letting you document natural bird responses without contamination.
What You'll Build
A compact, battery-operable instrument that listens through two synchronized microphones, performs real‑time echo cancellation via an adaptive algorithm, and outputs only the ambient bird calls for analysis or recording. The finished unit can log identified species to a smartphone over Bluetooth or store audio on an SD card, making it a complete field research assistant ready for deployment in forests and sanctuaries.
What You'll Learn
- Implement an NLMS adaptive filter on ESP32 using C/C++ and the ESP‑IDF toolchain
- Configure dual INMP441 I2S microphones for phase‑aligned stereo sampling
- Drive a PAM8403 amplifier and 3W speaker while preventing echo feedback
- Apply signal processing techniques to real‑world wildlife bioacoustics challenges
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| INMP441 I2S Mic | 2 |
| MCP4728 DAC | 1 |
| PAM8403 Amp | 1 |
| 3W 8Ω Speaker | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 3.5mm TRS Jack | 2 |
| Enclosure Box | 1 |
| 5V 2A PSU | 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
Postgraduate researchers and field biologists at institutions like IISc, NCBS, or Wildlife Institute of India who need custom acoustic monitoring gear. Advanced B.Tech ECE/EEE students building DSP projects for competitions such as Smart India Hackathon. Electronics designers prototyping adaptive noise cancellation solutions for environmental monitoring in India’s national parks and sanctuaries.
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 launch the AI companion that walks you through each step, or send a WhatsApp message to our support team for a same-day reply.
How does the NLMS filter improve bird call identification?
It adapts continuously to the echo path between speaker and mics, canceling the known playback signal so only the environmental bird calls remain, even if the speaker volume or distance changes.
Can I deploy this kit in a remote forest without internet?
Yes, the build runs entirely on the ESP32 with no cloud dependency. Power it from a 5V power bank and record to an SD card or output to a connected field laptop.
What software library is used for the adaptive filter?
We provide a ready‑to‑compile ESP‑IDF project with a custom NLMS implementation optimized for the dual INMP441 mics and MCP4728 DAC, fully documented and editable.
Wildlife Research — Dual INMP441 I2S mics on ESP32 implement NLMS adaptive filter to cancel echo from speaker output in real time.
What's in this kit
- ESP32 Dev Board
- INMP441 I2S Mic x2
- MCP4728 DAC
- PAM8403 Amp
- 3W 8Ω Speaker
- 4.7kΩ Resistors x5
- 100nF Caps x10
- PCB Prototype Board x2
- 3.5mm TRS Jack x2
- Enclosure Box
- 5V 2A PSU
- Soldering Iron
- Solder Wire
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.
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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