BluPi
Overview
This script emulates the hardware function of the Target BluEye emergency services alert system. The concept is to use a rtl-sdr compatible radio receiver to continuously scan the typical emergency band radio frequencies using rtl_power_fftw as a scanning frontend to rtl-sdr, and then filter/process the scan results for potential emergency radio sources.
Hardware support is currently limited to the Raspberry Pi 2/3 B, though this could feasibly work on many other systems. Recommended base system is the Raspbian Jessie LITE available here: https://www.raspberrypi.org/downloads/raspbian/ It should be possible to run this on a RPi1 as it doesn't consume too much processor power, however I haven't tested it yet.
Dependencies:
- libfftw3-dev
- libtclap-dev
- librtlsdr-dev
- libusb-1.0-0-dev
- cmake
- rtl-sdr (keenerd experimental branch: https://github.com/keenerd/rtl-sdr.git)
- rtl_power_fftw: https://github.com/AD-Vega/rtl-power-fftw.git
Installing these packages (on a Debian Jessie system) should also install all of their necessary dependencies for a complete install.
Installation:
Install/build the dependencies, then copy or clone the blupi-scan.py script. Make sure the script copies as an executable or use chmod +x blupi-scan.py to make it so.
Notes:
- Further documentation will be provided once the project is nearing completion.
- Run rtl_test -p for a few minutes to find out your receiver's necessary error correciton in PPM.
TO-DO:
- Add alert script (GPIO and potentially audio)
- Add GPS funtionality to allow speed-based alert sensitivity
- Create RPi2/RPi3 pre-built image (once project is finished, of course)