Low-cost • Open-Source • ESP32 + CC1101 • Sub-GHz RF Tool
The Scary-RF Tool is a low-cost, open-source Sub-GHz RF research device built using an ESP32 and a CC1101 transceiver.
It is designed for:
- RF signal capture
- Replay testing (Replay Attack)
- Frequency analysis
- RAW waveform visualization
- Signal storage and playback
This project focuses on educational, experimental, and RF research purposes.
This project is intended for educational and research purposes only.
The author is not responsible for misuse, illegal activities, or damage caused by this device.
Always comply with your local laws and regulations when working with radio frequency transmissions.
- ESP32 (multiple versions supported)
- CC1101 Sub-GHz Transceiver
- 1.3” OLED Display (SH1106 128x64)
- MicroSD Card Module
- Push Buttons (navigation)
- Power Switch
- Frequency Selection Switch (315 / 433 MHz)
- Lithium Battery (recycled or new)
- Charging Regulator Board
- Custom etched copper PCB
- 📡 Capture RF signals (315 / 433 MHz)
- 🔁 Replay captured signals
- 💾 Save and delete captures on SD card
- 📊 RAW waveform capture and visualization
- 🔍 Frequency identification (300–928 MHz)
- 🎲 Random code transmission (315–433 MHz)
- 📟 OLED real-time display
- 📢 BLE spam transmission
| Component | Pin | Function |
|---|---|---|
| CC1101 RX | 4 | RF Data Reception |
| CC1101 TX | 2 | RF Data Transmission |
| SD CS | 17 | Chip Select |
| SD MISO | 34 | SPI MISO |
| SD MOSI | 13 | SPI MOSI |
| SD SCK | 14 | SPI Clock |
| BTN UP | 27 | Navigate / Exit |
| BTN DOWN | 25 | Navigate / Save |
| BTN LEFT | 26 | Navigate / Library |
| BTN RIGHT | 32 | Navigate / Delete |
| BTN OK | 33 | Select / Transmit |
| FREQ SWITCH | 12 | 315 / 433 MHz Selector |
- Arduino IDE or PlatformIO
- ESP32 Board Package
- Required libraries:
- ELECHOUSE_CC1101
- Adafruit_SH1106 (or SH1106 compatible)
- SD
- SPI
- Wire
- Connect ESP32 via USB
- Select correct board
- Compile and upload firmware
- Insert SD card
- Power on device
- RAW capture
- Deauther
- BLE spam improvements
- Rolljam cooperative mode (you and another Scary-RF)
- Web-based file sharing (share captures)
- ESP-NOW remote control (control Scary-RF from other devices)
- Improved frequency analyzer
- RF security research
- Remote control protocol analysis
- Sub-GHz experimentation
- Learning about radio communication
- Embedded systems development
This project is open-source.
You are free to modify, improve, and distribute it under the chosen license.
Pull requests are welcome.
If you find bugs or want to improve features, feel free to open an issue.
Built with ESP32, curiosity, and a bit of chaos 👻