Electro-Acoustic Zither Kit with Arduino Mega
Build a Touch-Sensitive Zither with Arduino Mega & FSR Pressure Sensors
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 a simple wooden zither into an expressive electronic instrument where the pressure of each finger pluck controls the velocity of a sampled note, letting you perform with nuance typically found only in high-end digital pianos. The six FSR 402 force-sensitive resistors sit directly under each string, capturing minute differences in touch intensity. An Arduino Mega reads these analog values, maps them to a velocity range, and commands a DFPlayer Mini to play corresponding sound files from a microSD card — all with zero perceptible latency.
What You'll Build
An acoustic-looking zither that produces layered, high-quality sound whenever you press a string, with dynamics based on how hard you press. The built-in PAM8403 amplifier and 3W speaker make it completely self-contained, ready for solo practice, jam sessions, or stage performance. You can load your own sound banks onto the 8GB microSD card to switch between piano, guitar, synth, or percussion tones, turning the zither into a versatile pressure-controlled MIDI-like controller.
What You'll Learn
- Calibrating FSR 402 force sensors for musical touch response
- Mapping analog pressure values to velocity-sensitive sample triggering with Arduino Mega
- Integrating DFPlayer Mini serial control for on-demand audio playback
- Assembling and soldering a multi-sensor interface on prototyping board
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Mega | 1 |
| FSR 402 | 6 |
| DFPlayer Mini | 1 |
| MicroSD 8GB | 1 |
| PAM8403 Amp | 1 |
| 3W 8Ω Speaker | 1 |
| 10kΩ Resistors | 10 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 9V 1A PSU | 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
B.Tech ECE/EEE students tackling capstone projects that blend embedded systems with real-time audio processing. Smart India Hackathon participants building interactive musical installations or expressive controllers. Makers from IIT/NIT/VIT/BITS exploring sensor-based music technology. Ideal for anyone who has completed basic Arduino projects and soldered circuits, and wants to push into serious instrument design.
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 to start a chat with the AI companion specifically trained on this project, or reach us on WhatsApp. We answer quickly.
Can I use my own zither frame design?
Yes, you can mount the FSR strips under the strings of any flat-board zither. Just ensure each sensor aligns under a string and makes firm contact when pressed. The firmware expects six analog inputs from the FSRs.
Do I need prior soldering experience?
Yes, this is an advanced kit; you'll solder header pins, resistor dividers, capacitors, and wire connections on two prototyping boards. A soldering iron and wire are included, but if you're new to soldering, practice on scrap first.
Can I add more strings or sensors?
The Arduino Mega provides ample analog inputs, so you can extend to more FSR sensors. You'll need to modify the code to map additional channels and perhaps expand the sample bank on the microSD card.
FSR strips under zither strings measure touch pressure and trigger DFPlayer sample with matching velocity.
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