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Oui-Spy Foxhunter: BLE Direction Finder
Precision BLE proximity tracking firmware for the Oui-Spy with RSSI-based direction finding, seven graduated intensity levels, and variable-frequency audio feedback for radio foxhunting competitions.
Boards:esp32-s3
Firmware:arduinoplatformio
Use Cases:Rf Direction FindingBle Security Research
Oui-Spy Foxhunter: BLE Direction Finder
The Foxhunter firmware transforms the Oui-Spy into a precision BLE proximity tracker for radio direction finding. It functions like a Geiger counter for Bluetooth, providing real-time audio feedback proportional to signal strength as you approach a target device.
How It Works
- Power on the device to activate the configuration WiFi network
- Access the web portal at 192.168.4.1
- Enter a target MAC address
- The device enters tracking mode, continuously scanning for BLE signals
- Follow the audio-visual feedback to locate the device
Proximity Response Levels
The device provides seven graduated intensity levels:
| Level | RSSI Range | Response |
|---|---|---|
| INSANE SPEED | -35 to -25 dBm | Fastest beeping |
| VERY FAST | -45 to -35 dBm | Very rapid beeping |
| FAST | -55 to -45 dBm | Fast beeping |
| MODERATE | -65 to -55 dBm | Moderate beeping |
| SLOW | -75 to -65 dBm | Slow beeping |
| VERY SLOW | -80 to -75 dBm | Very slow beeping |
| PAINFULLY SLOW | -85+ dBm | Minimal beeping |
Features
- Single MAC address targeting with persistent configuration
- Independent buzzer and LED controls with toggleable preferences
- Power-on confirmation via startup beep with LED flash
- Target acquisition signals (three synchronized beeps and LED flashing)
- Settings persist across device reboots
- 16ms scanning intervals with 95% duty cycle for responsive detection
Best With
Pair with an MMCX directional antenna (such as a mini Yagi) for precision direction finding at events and competitions.
