ESP32 Pocket Spectrum Analyser Kit with ESP32 + LED
ESP32 Pocket Spectrum Analyser Kit: Build an FM Scanner with OLED
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 ESP32 into a handheld FM band scanner. This kit enables you to build a pocket-sized spectrum analyser that sweeps the 76–108 MHz range, plotting live signal strength bars on a crisp 0.96-inch OLED screen. Ideal for students exploring wireless communication, hobbyists verifying antenna performance, or anyone curious about the radio waves surrounding them.
What You'll Build
You'll assemble and program a fully functional spectrum analyser inside a rugged ABS enclosure. The device scans the entire FM broadcast band in under a second, displaying real‑time bar graphs of signal amplitudes for every channel. It operates on a standard 9V battery, making it a self-contained tool for RF surveys, field experiments, and classroom demonstrations.
What You'll Learn
- Interfacing the RDA5807 FM receiver module with ESP32 over I2C and reading RSSI values
- Visualising spectrum data on a 0.96-inch OLED display using custom graphics libraries
- Implementing frequency scanning algorithms and signal processing in Arduino/C++
- Soldering and assembling a portable electronics gadget with enclosure and power management
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| RDA5807 FM Module | 1 |
| 0.96in OLED Display | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Ceramic Capacitors | 5 |
| 75Ω Antenna | 1 |
| ABS 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
Built for CBSE Class 12 students bringing electromagnetic wave theory to life, B.Tech ECE undergraduates tackling a mini project on wireless communication, and Smart India Hackathon hardware track participants needing a portable RF tool. ATL Tinkering Labs will also find it a ready-made exploration of the radio spectrum, while hobbyists across India can finally own an affordable, hands‑on spectrum analyser.
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?
The AI companion provides step‑by‑step guidance specific to this kit’s wiring and code. You can also message us on WhatsApp for real‑time troubleshooting from a real project builder.
Do I need prior RF experience to complete this project?
No. The RDA5807 module handles all RF tuning internally and the provided code takes care of I2C communication. The AI companion explains the theory behind signal strength measurement as you build, so you learn while soldering.
Can I modify the scanning range or add features like data logging?
Absolutely. The ESP32 firmware is fully open source. You can adjust the frequency sweep range in the code, add a peak‑hold function, or integrate an SD card for logging spectrum data over time.
Is soldering mandatory, and what if I’ve never soldered before?
Yes, you’ll solder header pins, resistors, capacitors, and the battery snap. The kit includes a soldering iron and solder wire, and the AI companion walks first‑timers through every joint with photos. It’s a controlled way to develop a core maker skill.
RDA5807 FM chip on ESP32 scans 76-108MHz. OLED shows spectrum with signal strength bars for each channel.
What's in this kit
- ESP32 Dev Board
- RDA5807 FM Module
- 0.96in OLED
- 4.7kΩ Resistors x5
- 100nF Caps x5
- 75Ω Antenna
- ABS Enclosure Box
- 9V Battery Snap
- Soldering Iron
- Solder Wire
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