Radio Frequency Doppler Simulator Kit with Arduino Uno + LED
Arduino Doppler Effect Simulator Kit: Visualize and Hear Frequency Shifts in Rocketry Simulations
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
What if you could hear a rocket’s approach through a speaker, the pitch rising as it nears and falling as it recedes? This kit turns that abstract physics concept into a tangible device: a potentiometer-controlled tone generator that shifts frequency just like the Doppler effect. Ideal for students exploring space simulations or science fair projects.
What You'll Build
You’ll assemble a self-contained radio frequency simulator that outputs a tone through a 3W speaker while displaying real-time frequency values on a 0.96-inch OLED. As you turn the potentiometer, the pitch changes smoothly, mimicking the relative velocity between a source and observer. Perfect for demonstrating how radar speed guns, astronomical redshift, or rocket telemetry work.
What You'll Learn
- How the Doppler effect translates to frequency modulation in an Arduino sketch
- Interfacing an OLED display and amplifier to visualize and amplify signals
- Using a potentiometer as an analog velocity control input
- Debugging real-time audio output with embedded C code
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| PAM8403 Amp | x1 |
| 3W 8Ω Speaker | x1 |
| 10kΩ Potentiometer | x1 |
| 0.96in OLED | x1 |
| 10kΩ Resistors | x5 |
| 100nF Caps | x5 |
| 830-pt Breadboard | x1 |
| M-M Wires | x20 |
| 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
This kit is designed for CBSE Class 11–12 students building physics investigatory projects, B.Tech ECE/EEE students exploring embedded systems, and participants of Smart India Hackathon working on signal processing demos. ATL Tinkering Labs and hobbyists with an interest in space simulation will also find it incredibly rewarding.
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?
Open the AI companion via the QR code; it has seen every possible error for this kit and suggests fixes instantly. You can also send a WhatsApp message and a real engineer will reply within an hour.
Can I modify the code to simulate different velocity profiles?
Absolutely. The provided Arduino sketch is fully commented. You can add acceleration curves, map potentiometer values to exponential frequency changes, or even connect a distance sensor to trigger pitch changes based on actual movement.
Does this kit demonstrate the classic ambulance siren effect?
Yes, the tone shift is easily perceptible as you turn the knob, exactly like a passing siren. By calibrating the frequency sweep you can recreate the classic high-to-low pitch drop observed when a source moves past a stationary observer.
Is soldering required?
No soldering at all. All connections are made on the provided breadboard using jumper wires. The whole build is reusable, so you can take it apart and use components for future projects.
Tone frequency on speaker shifts as potentiometer simulates relative velocity. Demonstrates Doppler effect.
What's in this kit
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