Binaural Beat Therapy Timer Variant 3 Kit with ESP32 + LED
ESP32 Binaural Beat Generator Kit: 40Hz Gamma Entrainment Timer with OLED Display and Volume Control
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Create a clinical-grade binaural beat therapy device that generates a precise 40Hz frequency difference for gamma brainwave entrainment, known to enhance focus and cognitive performance. Ideal for psychology researchers, neuro-hackers, and students exploring brain-computer interfaces, this kit lets you build a portable session timer with real-time feedback on an OLED screen.
What You'll Build
A fully functional binaural beat generator with an ESP32 controlling a quad DAC to output two slightly detuned sine waves—200Hz and 240Hz—creating a perceived 40Hz beat through stereo speakers. The rotary encoder adjusts session duration and volume, while the OLED displays countdown, status, and live frequency settings. The entire device fits inside a custom enclosure, ready for daily therapy sessions or experimental neuro-feedback setups.
What You'll Learn
- Generating precise dual-channel audio signals using the MCP4728 DAC over I2C
- Implementing a 40Hz binaural beat algorithm for gamma entrainment on an ESP32
- Integrating a rotary encoder with interrupt-driven firmware for real-time control
- Designing a compact stereo amplifier circuit with the PAM8403 and laying out a functional PCB
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| MCP4728 Quad DAC | 1 |
| PAM8403 Stereo Amp | 1 |
| 3W 8Ω Speaker | 2 |
| Rotary Encoder | 1 |
| 0.96in OLED | 1 |
| 10kΩ Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 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
B.Tech ECE and Biomedical Engineering students building final-year projects, psychology researchers studying neuro-feedback, Smart India Hackathon participants exploring healthcare innovations, and hobbyists from IIT/NIT/VIT/BITS who need a reliable, calibrated binaural beat device. The kit demands soldering and embedded firmware skills, matching the advanced level expected in college maker labs.
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?
The AI companion, accessible via QR code, walks you through each step with real-time troubleshooting. For additional help, WhatsApp our engineers directly.
Can I program different binaural beat frequencies?
Yes. The firmware is open-source; you can modify the I2C commands to generate any frequency pair — delta, theta, alpha, beta, or gamma — by adjusting the sine wave synthesis parameters.
How accurate is the 40Hz beat?
The ESP32’s 240 MHz clock and MCP4728’s 12-bit resolution yield less than 0.1% frequency error, producing a clean 40 Hz perceptual beat confirmed by audio measurement tools.
Does the kit include guidance for soldering the PCB?
Yes. The AI companion contains a dedicated soldering module covering pad preparation, component placement, and inspection. A soldering iron and lead-free solder wire are included.
ESP32 generates precise 40Hz binaural beat for gamma entrainment with session timer and volume control.
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.
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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