After PySpecSDR, which is awesome! :) i had to make also a frequency scanner. Because the range in a frequency scanner is usually large, this time i used the framebuffer for graphic display, as a terminal would be too small. And thus... HeatWave created!
All information about it can be found on the Github repo at: https://github.com/xqtr/heatwave
In summary, you can have an old device or a Raspberry pi and dedicate it, to use a RTLSDR for continues frequency scanning. The program can export data continuously and you can SSH to the system to get/watch them.
I made the program for specifically using it with my Hackberry Pi, which unfortunately uses a 16bit color mode framebuffer. This means that the heatmap is not so cool as in other systems, but still is usable and colorful!
Showcase
