Arbitrary Waveform Generator 4CH Kit with Arduino Due + LED
Build a 4-Channel Arbitrary Waveform Generator with Arduino Due — Your Own Signal Lab
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 fully independent, four-channel arbitrary waveform generator that rivals entry‑level commercial instruments. Generate sine, triangle, sawtooth, or custom waveforms on each channel simultaneously — ideal for audio testing, sensor simulation, or university lab experiments where precise analog signals are needed. This kit turns raw Arduino Due hardware into a professional‑grade tool for makers, engineering students, and hackathon teams.
What You'll Build
A compact, standalone signal generator with an OLED display for waveform selection, four independent outputs driven by MCP4725 12‑bit DACs, and two amplified speaker channels. All four channels update via Direct Memory Access (DMA) at a steady 100 kHz, ensuring glitch‑free, high‑resolution signals. The final device fits in an enclosure box, powered by a 9V adapter, ready for your bench.
What You'll Learn
- Configure DMA on the SAM3X8E microcontroller to feed four DACs without CPU overhead
- Multiplex I²C devices with the TCA9548A to control four identical DACs from a single bus
- Integrate 12‑bit MCP4725 DACs and calibrate output voltage levels
- Amplify low‑level signals using the PAM8403 class‑D amplifier and drive speakers
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Due | 1 |
| MCP4725 DAC | 4 |
| TCA9548A I2C Mux | 1 |
| PAM8403 Amp | 1 |
| 3W 8Ω Speaker | 2 |
| 0.96in OLED | 1 |
| 100nF Caps | 15 |
| PCB Prototype Board | 3 |
| 9V 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 kit is built for B.Tech ECE/EEE students designing lab‑grade test equipment for final‑year projects or internships. It’s equally at home in Smart India Hackathon hardware tracks, ATL Tinkering Labs (advanced modules), and maker clubs at IITs, NITs, VIT, and BITS Pilani. If you’ve already mastered basic Arduino and are ready for real‑time signal processing and DMA, this project is your next step.
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 chat with the AI companion trained on this exact circuit and code. If you need a human touch, our WhatsApp support responds within hours.
Can this generator output audio signals for speaker testing?
Yes, the PAM8403 amplifier and dual 3W speakers let you audition generated waveforms directly. You can sweep frequencies or play custom audio‑band signals without external gear.
Is the Arduino Due pre‑loaded with the waveform code?
No. The kit includes full source code and libraries (available through the AI companion) that you’ll upload via Arduino IDE. You’ll learn how the DMA and MUX drivers work as you flash the board.
What frequency range and resolution does each channel support?
Each channel updates at a fixed 100 kHz DMA rate, so maximum output frequency depends on the waveform shape (e.g., a 10‑point sine wave would be ~10 kHz). Resolution is 12 bits (4,096 voltage steps) from the MCP4725 DAC.
Four MCP4725 DACs output independent arbitrary waveforms. DMA on Arduino Due updates at 100kHz each.
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