Granular Synthesiser Kit with Arduino Due + LED
Granular Synthesiser Kit with Arduino Due & OLED — Control Pitch, Density, and Overlapping Grains
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Transform your Arduino Due into a standalone granular synthesiser that reads micro audio samples from an SD card and blends them into evolving soundscapes — with hands‑on control over grain pitch, density, and playback order via three rotary encoders. The 0.96in OLED displays all parameters in real time, while the MCP4725 DAC and PAM8403 amplifier drive a built‑in 3W speaker for immediate, portable audio output.
What You'll Build
You’ll assemble a fully enclosed, battery‑powered audio processor that lets you load any WAV files onto a microSD, then manipulate them in real time: overlapping grains, pitch‑shifting, and density modulation. The kit uses a high‑speed Arduino Due to handle low‑latency audio buffer management, and the tactile buttons let you store and recall presets on the fly.
What You'll Learn
- Real‑time audio buffer management and DMA transfers on Arduino Due
- Interfacing MCP4725 I2C DAC for high‑fidelity 12‑bit output
- Reading and mapping rotary encoders for continuous parameter control
- Soldering and prototyping a complete audio circuit on PCB, from power amplifier to speaker
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Due | 1 |
| MicroSD Module | 1 |
| MicroSD Card 8GB | 1 |
| MCP4725 DAC | 1 |
| PAM8403 Amp | 1 |
| 3W 8Ω Speaker | 1 |
| Rotary Encoder | 3 |
| Tactile Button | 4 |
| 0.96in OLED | 1 |
| 10kΩ Resistors | 10 |
| 100nF Caps | 15 |
| PCB Prototype Board | 2 |
| Enclosure Box | 1 |
| 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
Advanced makers and B.Tech ECE/EEE students designing a major project around real‑time audio DSP will find everything needed to prototype a granular processor. It’s also a ready‑made entry for Smart India Hackathon teams exploring sound manipulation, and for ATL Tinkering Lab mentors demonstrating high‑level microcontroller audio. Whether you’re at IIT, NIT, VIT, or a self‑taught musician, this kit fits directly into a curriculum or a portable synth rig.
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 on the box to start a conversation with the AI companion trained on this specific kit. If you need a human touch, reply on WhatsApp and a Compoden engineer will step in within hours.
Can I load my own audio samples onto the SD card?
Yes, the kit works with any standard 16‑bit mono WAV files. Just copy them to the provided 8GB microSD, and the firmware will index them automatically. You can layer grains from different files in real time.
Does this kit require external audio equipment?
No, it’s completely self‑contained. The PAM8403 amplifier and 3W speaker deliver loud, clear output directly from the enclosure. If you prefer, you can also tap the DAC’s output for line‑level recording or external monitors.
Is soldering experience necessary?
Yes, this is an advanced kit that requires through‑hole soldering. The included soldering iron and wire make it a complete build‑from‑scratch project — ideal for students who want to own the final hardware completely.
Arduino Due reads short audio grains from SD card and plays overlapping grains with pitch and density 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.
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