RF Signal Sniffer Kit with Arduino Uno + LED
Build Your Own 433MHz RF Signal Sniffer with Arduino Uno & 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.
Turn your Arduino into a portable RF sniffer that captures and timestamps raw 433MHz transmissions. Whether you are reverse-engineering a remote control, troubleshooting wireless sensors, or exploring IoT security, this kit gives you an instant window into the invisible chatter of the ISM band. Walk around your lab and watch every device reveal its signal on a crisp OLED display.
What You'll Build
A standalone, battery-powered scanner that continuously monitors the 433MHz airwaves. The OLED shows each received packet’s raw hex payload along with a precise timestamp from the DS3231 RTC. You will end up with a tool you can keep on your bench to quickly diagnose remote controls, alarm sensors, and other wireless gadgets, then log the data for analysis via Arduino’s serial monitor.
What You'll Learn
- Interface a 433MHz OOK receiver module and decode its raw digital output
- Connect and program an I2C OLED display and DS3231 real-time clock
- Write Arduino code that time‑stamps RF events and outputs hex data
- Debug signal capture using serial communication and breadboard prototypes
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| 433MHz Receiver | 1 |
| 0.96in OLED | 1 |
| DS3231 RTC | 1 |
| 433MHz Antenna | 1 |
| 10kΩ Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 9V Battery Snap | 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
Ideal for CBSE Class 11–12 students building a wireless communication model for science exhibitions, B.Tech ECE/EEE first‑year students tackling mini‑projects, ATL Tinkering Lab members who need a debugging tool, and hobbyists eager to explore the RF spectrum around them. It bridges the gap between textbook theory and real‑world wireless protocols, all without a single solder joint.
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 frequencies can this sniffer detect?
The included 433MHz receiver module is optimized for the 433 MHz ISM band, commonly used by remote controls, wireless doorbells, weather stations, and alarm sensors. It picks up any OOK/ASK modulated signals near that frequency, not pure sine waves or WiFi.
Do I need to solder anything?
No soldering required. All connections are made on the included 400‑point breadboard using male‑to‑male jumper wires, so you can assemble and modify the circuit quickly.
Can I view the captured data on my computer?
Yes. The Arduino’s serial monitor displays the raw hex data and timestamps in real time, which you can copy‑paste into a spreadsheet. With a small code tweak, you can even log them to an SD card (not included).
What if my OLED shows nothing or garbled output?
First, verify the I2C wiring and adjust the contrast. If that doesn’t help, scan the QR code to access the AI companion; it will walk you through a step‑by‑step troubleshooting sequence and connect you to a human expert via WhatsApp if needed.
433MHz receiver module scans for signals. OLED shows timestamp and raw hex data for each received packet.
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