Pitch Shifter Pedal Kit with Arduino Due
Build a Real-Time Pitch Shifter Guitar Pedal with Arduino Due
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 guitar signal into octave-shifted harmonics with a custom-built pitch shifter pedal powered by an Arduino Due. Using real-time FFT resynthesis, this advanced kit processes audio on the fly, shifting pitch up or down one octave without noticeable latency. Perfect for musicians and audio engineering students exploring DSP hardware in a rugged pedal format.
What You'll Build
A fully enclosed, pedal-form pitch shifter that captures your instrument’s sound via a high-quality MEMS microphone, digitizes it at high speed, and applies phase‑vocoder resynthesis to transpose the pitch by an octave. A sweepable potentiometer lets you blend between dry, octave‑down, and octave‑up signals, with the result amplified through a built‑in 3W speaker or line‑out to your amp.
What You'll Learn
- Real-time Fast Fourier Transform (FFT) implementation on ARM Cortex‑M3 (Arduino Due)
- Interfacing high-speed ADCs and DACs for a low‑latency audio signal chain
- Signal resynthesis and overlap‑add techniques for glitch‑free pitch shifting
- PCB prototyping and enclosure design for a professional guitar pedal format
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Due | 1 |
| MAX9814 Microphone Amplifier | 1 |
| MCP4725 DAC | 1 |
| PAM8403 Audio Amplifier | 1 |
| 3W 8Ω Speaker | 1 |
| 10kΩ Potentiometer | 1 |
| 100nF Capacitors | 15 |
| PCB Prototype Board | 2 |
| Enclosure Box | 1 |
| 9V 1A Power Supply Unit | 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 and EEE students tackling real-time signal processing assignments, final year projects, or Smart India Hackathon challenges. It’s also ideal for young audio engineers and makers from IITs, NITs, VIT, or BITS Pilani who want to combine music and embedded systems in a perform‑ready guitar pedal.
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 your kit box to chat with the AI build companion trained on this exact project, or reach out on WhatsApp for direct support from our team in Bengaluru.
Do I need prior audio DSP knowledge to build this kit?
This is an advanced kit; familiarity with signal processing concepts (sampling, FFT) and Arduino C++ programming is expected. The AI companion provides a detailed code walkthrough, but you should be ready to engage with the underlying DSP theory.
What is the latency of the pitch shift effect?
Optimized STFT routines on the Arduino Due keep audio latency around 15-20 milliseconds, giving you a responsive, real-time playing experience suitable for practice and live experimentation.
Can I connect this pedal to an external guitar amplifier?
Yes, the output from the PAM8403 can be routed to a guitar amp’s input via the 3.5mm jack or speaker terminals. For a dedicated line out, you can easily add a 6.35mm jack to the enclosure following the AI companion’s guidance.
Arduino Due shifts audio pitch up or down one octave via real-time FFT resynthesis. Guitar pedal format.
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