RF Spectrum Analyser Kit with Arduino Uno
RF Spectrum Analyser Kit with Arduino Uno — Build a Portable FM Band Scanner
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Scan the invisible world of FM radio frequencies and visualise signal strength in real time. This kit transforms an Arduino Uno and RDA5807 module into a fully functional spectrum analyser, plotting live data on a vibrant 1.8-inch TFT display. Ideal for makers, students, and hobbyists who want to explore RF engineering, antenna testing, or simply map local radio stations across the 76-108 MHz band.
What You'll Build
A portable, battery-powered spectrum analyser that sweeps the entire FM broadcast band, detects signal peaks, and draws a dynamic frequency vs. amplitude graph on the screen. You'll have a real field instrument to compare antenna performance, discover unused frequencies, or demonstrate communication principles in your project.
What You'll Learn
- Interfacing I2C FM modules (RDA5807) with Arduino
- Programming frequency sweep and data acquisition algorithms
- Driving SPI colour TFT displays (ST7735) for real-time graphics
- Practical RF signal interpretation and spectrum analysis fundamentals
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| RDA5807 FM Module | 1 |
| 1.8in TFT ST7735 | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 5 |
| 75Ω Antenna | 1 |
| PCB Prototype Board | 2 |
| 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
CBSE Class 11-12 students exploring communication systems in physics; B.Tech ECE/EEE undergraduates working on RF lab assignments or minor projects; Smart India Hackathon participants prototyping wireless monitoring solutions; ATL Tinkering Lab innovators designing radio-based experiments; and hobbyists from IIT, NIT, VIT, BITS communities who want a hands-on tool for RF experimentation.
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?
Every kit includes a QR-code-linked AI companion trained on this exact project, plus WhatsApp and email support from Compoden's team, so you're never left troubleshooting alone.
Can I use this kit without prior Arduino experience?
While basic familiarity with the Arduino IDE is helpful, the AI companion provides step-by-step code walkthroughs and wiring diagrams, making it suitable for motivated intermediate learners.
What can I scan with this spectrum analyser?
The RDA5807 module covers 76—108 MHz, which includes all FM radio stations, certain wireless microphones, and amateur radio signals in that band. You can visualise local station strengths, compare antennas, or detect interference.
Is the kit suitable for a school science exhibition?
Absolutely. The real-time spectrum display is a compelling demonstration of electromagnetic waves, signal processing, and microcontroller programming — ideal for CBSE/ICSE science exhibits and engineering college tech fests.
RDA5807 FM chip sweeps 76-108MHz band. Signal strength at each frequency plotted on TFT spectrum display.
What's in this kit
- Arduino Uno R3
- RDA5807 FM Module
- 1.8in TFT ST7735
- 4.7kΩ Resistors x5
- 100nF Caps x5
- 75Ω Antenna
- PCB Prototype Board x2
- 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