ESP32 Waveform Generator Kit - Build 4 Waveforms with Web UI
ESP32 Waveform Function Generator Kit - Generate Sine, Square, Triangle & Sawtooth Waves with Web 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.
This kit transforms an ESP32 into a standalone, four-waveform function generator that you control entirely through a browser. You'll solder the MCP4725 DAC, TFT display, and amplifier onto a prototyping board, load the firmware, and dial up sine, square, triangle, or sawtooth waves up to 1 kHz from your phone or laptop. No ancient lab gear, no tedious button-pressing-just clean analog output for your circuit experiments, filter tuning, or audio testing.
What You'll Build
A compact, ready-to-use waveform generator that fits on your workbench or inside your hostel shelf. Once assembled, you connect to the ESP32's own Wi-Fi access point, open any browser, and select wave shape and frequency on a live dashboard. The 1.8-inch TFT shows exactly what you're outputting, and the PAM8403 amp drives a small speaker so you can hear low-frequency tones. It's your personal signal source for op-amp labs, analog filter coursework, and rapid prototyping.
What You'll Learn
- How to configure and talk to an MCP4725 I�C digital-to-analog converter from the ESP32
- Generating precise analog waveforms with software-defined amplitude and timing
- Building an asynchronous web server that updates DAC output in real time without page reloads
- Soldering a mixed-signal board-placing decoupling capacitors, routing analog and digital grounds, and avoiding noise
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| MCP4725 DAC | 1 |
| PAM8403 Amp | 1 |
| 3W 8? Speaker | 1 |
| 1.8in TFT ST7735 | 1 |
| 10k? Resistors | 5 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 5V 2A PSU | 1 |
| Enclosure Box | 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 advanced kit is built for final-year B.Tech ECE and EEE students who need a dedicated function generator for their major project or lab work, Smart India Hackathon teams tackling signal-processing hardware challenges, and hobbyists preparing for embedded design interviews. It's also a strong addition to the hostel toolkits of IIT, NIT, BITS, and VIT students who want a portable, web-controlled test instrument without relying on crowded department 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?
Scan the QR code to chat with the AI companion trained on this project, or send a WhatsApp message with a photo of your board-our team replies within hours.
Can I use this function generator for my college lab experiments?
Yes, it's ideal for low-frequency analog circuit testing, active filter frequency response, op-amp characterization, and LDR/photodiode experiments. It replaces a bench signal generator for labs up to 1kHz.
Is the web UI responsive on a mobile phone?
Absolutely. The dashboard is a single-page progressive web app that scales perfectly on any smartphone browser-no app install required, just a Wi-Fi connection to the ESP32.
How do I calibrate the output amplitude?
The kit includes calibration routines in the AI companion. You'll use the DAC's internal voltage reference and an optional multi-turn trimmer (sourced locally) to set 0-3.3V peak-to-peak, then verify with an oscilloscope or multimeter.
MCP4725 DAC on ESP32 generates sine, square, triangle and sawtooth waves up to 1kHz. Frequency from web UI.
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.
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