Tone Generator Audio Test Kit with Arduino Uno + LED
Tone Generator Audio Test Kit with Arduino Uno + LED – Build a Sine/Square/Triangle Wave Signal Generator
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Build a compact function generator that produces precise sine, square, and triangle waves from 1Hz to over 40kHz. Use it to test speakers, troubleshoot audio circuits, or explore how different waveforms sound through the built-in amplifier and 3W speaker. With the AD9833 DDS chip, Arduino Uno, and a simple rotary encoder interface, you'll have a usable lab tool in one afternoon.
What You'll Build
A standalone handheld signal generator with a 0.96-inch OLED display that shows the selected waveform and frequency. Turn the rotary encoder to sweep frequencies smoothly, press to change wave shapes, and hear the output through the onboard amplifier and speaker. It doubles as a learning platform for digital signal synthesis and a practical tool for testing audio gear.
What You'll Learn
- Programming the AD9833 DDS chip via SPI to output precise sine, square, and triangle waves
- Using a rotary encoder with interrupts for fluid frequency control and waveform switching
- Displaying real-time data on a 0.96-inch I2C OLED screen
- Wiring and driving a PAM8403 class-D amplifier to hear your signals through a speaker
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| AD9833 Signal Gen | 1 |
| PAM8403 Amp | 1 |
| 3W 8Ω Speaker | 1 |
| Rotary Encoder | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 9V Battery Snap | 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
Perfect for school students discovering electronics through ATL Tinkering Labs or CBSE Class 11-12 physics projects. B.Tech ECE/EEE freshers can use it as a quick signal reference for circuit experiments. Also ideal for a parent-child weekend build or a Smart India Hackathon hardware prototype.
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?
Open the AI build companion via the QR code in the box for instant 24/7 guidance, or message us on WhatsApp for live help from our team.
Can I connect this signal generator to an oscilloscope?
Yes, the AD9833 output pin can be connected to an oscilloscope probe using a jumper wire. You’ll see clean sine, square, or triangle waves exactly as generated.
Can I change waveforms without reprogramming?
Absolutely. The rotary encoder lets you toggle between sine, square, and triangle modes and adjust frequency on the fly. All changes appear instantly on the OLED.
Is this kit suitable for a 10-year-old with no experience?
Yes, the color-coded breadboard layout and AI companion’s picture-by-picture guide make it a great first project. Adult supervision is recommended for handling the 9V battery.
AD9833 generates sine, square and triangle waves from 1Hz to 40kHz. Frequency from rotary encoder.
What's in this kit
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