Dual-Channel Waveform Generator Kit with Arduino Uno
Build a Dual-Channel Waveform Generator with Arduino Uno: Sine, Square, Triangle up to 1 MHz
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Put a fully independent two-channel function generator on your workbench-without the price tag of a bench instrument. This kit pairs two AD9833 direct digital synthesis modules with an Arduino Uno, letting you generate sine, square, and triangle waves up to 1 MHz per channel. Two rotary encoders set frequency and phase on the fly, and a full-color TFT keeps you informed. It's a real instrument you build, calibrate, and use for years.
What You'll Build
You'll assemble a portable function generator that drives two independent AD9833 DDS channels through a PAM8403 amplifier and a 3W speaker. Turn one encoder to set frequency from 0.1 Hz to 1 MHz; turn the other to shift phase. The 1.8-inch ST7735 display shows waveform shape, frequency, and phase in real time. Plug in a scope or use the speaker to hear the waveforms-this generator becomes your go-to audio and low-frequency signal source for testing circuits, filters, and amplifiers.
What You'll Learn
- Direct digital synthesis (DDS) principles with the AD9833 IC and how to program frequency and phase registers via SPI.
- Arduino programming for real-time encoder input, TFT drawing, and dual-channel waveform control.
- Hardware user-interface design: debouncing encoders, managing display menus, and creating responsive controls.
- Signal conditioning and audio amplification using the PAM8403 class-D amplifier to drive a speaker or line-level output.
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| AD9833 Signal Gen | 2 |
| PAM8403 Amp | 1 |
| 3W 8? Speaker | 1 |
| Rotary Encoder | 2 |
| 1.8in TFT ST7735 | 1 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 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
Designed for B.Tech ECE/EEE students who need a lab-grade signal source for project work, CBSE Class 12 students exploring waveform generation for physics practicals, and hobbyists tired of opaque bench equipment. It's also perfect for ATL Tinkering Lab mentors and Smart India Hackathon teams building prototype instruments with real-time control.
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 inside the box to launch our AI build companion, which gives step-by-step visuals and troubleshooting. You can also send a WhatsApp message with a photo of your board, and a team member who knows this exact kit will reply within hours.
Can I use this function generator for audio testing?
Absolutely. The PAM8403 amplifier drives the supplied 3 W speaker directly, letting you hear sine sweeps, square-wave tones, and triangular waveforms up to the full audio band. The output is also accessible on a pin header for connecting to other audio circuits.
Do I need prior soldering experience?
The kit includes a soldering iron and solder wire, and the components are mounted on a through-hole prototype PCB. The AI companion guides beginners through proper soldering technique, and the build leaves plenty of room to learn without risking sensitive parts.
Can I modify the code to add custom waveforms or sweep functions?
Yes. The Arduino Uno is fully programmable, and the AD9833 can generate a wide range of frequency and phase settings. You're free to write your own sweep routines, FM modulation, or even store arbitrary waveform lookup tables in the microcontroller.
Dual AD9833 generates independent sine square triangle waves to 1MHz. Frequency and phase from encoders.
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