12-Step Melody Sequencer with Arduino Uno Touch Kit
Build a 12-Step Touch Sequencer Grid with Arduino Uno - Program Melodic Patterns
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine pressing 12 touch pads to light up a sequence of notes, then twisting a knob to change tempo - all playing through a tiny amplifier you wired yourself. This kit turns an Arduino Uno into a programmable melodic sequencer, perfect for music experiments, CBSE electronics projects, and anyone curious about building their own electronic music instrument.
What You'll Build
A standalone 12-step sequencer with capacitive touch pads that play pre-programmed notes through the MCP4725 DAC and PAM8403 amplifier. Adjust playback speed with the onboard potentiometer, and experiment with different note sequences by modifying the Arduino code. You'll have a tangible electronic musical instrument that demonstrates digital synthesis, touch sensing, and audio amplification.
What You'll Learn
- Capacitive touch sensing with MPR121 and I2C communication
- Generating analog audio waveforms using MCP4725 DAC over I2C
- Programming musical note arrays and step sequencing logic in Arduino C++
- Amplifying low-level audio signals with PAM8403 and driving a 3W speaker
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| MPR121 Touch | x1 |
| MCP4725 DAC | x1 |
| PAM8403 Amp | x1 |
| 3W 8? Speaker | x1 |
| 10k? Potentiometer | x1 |
| 4.7k? Resistors | x5 |
| 100nF Caps | x5 |
| 400-pt Breadboard | x1 |
| M-M Wires | x20 |
| M-F Wires | x15 |
| 9V Battery Snap | x1 |
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
CBSE Class 11-12 students exploring microcontroller-based music projects, ATL tinkering lab members building interactive sound displays, and B.Tech ECE students prototyping audio interfaces for Smart India Hackathon ideas. Anyone aged 15+ curious about turning a breadboard into a music sequencer will find this kit an ideal hands-on challenge.
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 access the AI companion trained on your Touch Sequencer Grid kit. It can guide you step-by-step through wiring and code, or WhatsApp our support team for personal assistance.
Can I change the notes or add more touch pads?
Yes, the Arduino code is fully customisable. You can edit the note array to create custom scales or melodies. The MPR121 supports up to 12 pads, but you can extend with additional sensors.
Is the amplifier loud enough for a room?
The PAM8403 delivers clear 3W output through the included 8? speaker - perfect for personal listening and classroom demonstrations.
Do I need external tools for assembly?
No soldering required. All connections use breadboard-compatible jumper wires. Just a computer with Arduino IDE to upload the code.
MPR121 12-pad grid programs a 12-step melodic sequence. Tempo via potentiometer. Plays through PAM8403.
What's in this kit
- Arduino Uno R3
- MPR121 Touch
- MCP4725 DAC
- PAM8403 Amp
- 3W 8? Speaker
- 10k? Potentiometer
- 4.7k? Resistors x5
- 100nF Caps x5
- 400-pt Breadboard
- M-M Wires x20
- M-F Wires x15
- 9V Battery Snap
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