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RF-Clown: An Open-Source BLE & Bluetooth Jammer for Tinkerers and Testers

RF-Clown is a fully open-source BLE and Bluetooth jammer built around the powerful ESP32 and dual NRF24L01+PA+LNA modules. Designed for those diving deep into RF security, this project puts transparency, control, and learning first — no locked-down binaries or black-box tricks.

Whether you’re probing protocol weaknesses or just experimenting with RF jamming patterns in a controlled environment, RF-Clown gives you full control over every byte.

🔍 Why RF-Clown Exists

RF-Clown isn’t here to replace commercial tools. It’s built for education, for exploration, and for expanding the community’s understanding of RF vulnerabilities — especially around Bluetooth Low Energy (BLE) and classic Bluetooth devices.

Too many jamming tools online are either closed-source or locked behind sketchy binaries. RF-Clown changes that, inviting developers, hackers, and researchers to inspect the code, tweak it, and use it responsibly.

⚙️ Features That Matter

Dual NRF24 Configuration
Uses both HSPI and VSPI interfaces on the ESP32 for simultaneous BLE + Bluetooth jamming.
Smart Mode Switching
A single push-button toggles between BLE, classic Bluetooth, or both.
NeoPixel Feedback
An onboard RGB LED gives live visual feedback on your current mode.
Portable Setup
Designed for lithium battery use, with integrated TP4056 charger for easy recharging.
Fully Custom PCB
The board includes a CP2102 USB-to-Serial bridge, LF33 voltage regulator, and clean power routing for the radios.
100% Open-Source
Code is published, documented, and ready to modify or fork.

🧠 Quick Flash Guide (.bin Upload Method)

Want to skip compiling the code yourself? Here’s how to flash the precompiled binary directly to your ESP32:

Get the Tools
- ESP32 Flash Download Tool (from Espressif)
- CP2102 USB drivers if needed.
Download the .bin Firmware
- Grab the latest release from the RF-Clown GitHub repo.
Flash It
- Connect your ESP32 with USB.
- Open the ESP32 Flash Tool.
- Load the .bin file at address 0x1000.
- Set baud rate to 115200, select the right COM port.
- Hit Start.
Done
After a successful flash, restart your ESP32 — your jammer is live.

🛠 Manual Upload (Arduino IDE)

Prefer compiling and modifying the code?

Use ESP32 Board version: 1.0.5
Upload using standard ESP32 Dev Module settings.
Make sure you’ve got the RF24 library installed.
The project supports OTA updates if you want to get fancy.

👀 Hardware Snapshot

The RF-Clown PCB is sleek and purpose-built. From power to programming, everything is on-board:

NRF modules on both SPI interfaces
Programming via onboard CP2102
Lithium battery ready
NeoPixel status LED
All essentials in a compact footprint

Two versions of the board are available: nRFBOX V1 and V2. Both support the same firmware and features.

📖 Documentation & Support

Complete build instructions, schematics, wiring diagrams, and detailed guides are available in the official documentation. It’s written to be useful — not bloated.

→ Read the Docs