Recommended · for some experience
Building a Camera That Can See Wifi | Part 3 SUCCESS!
Why people recommend it
Final part of an open-source build that maps Wi-Fi signal strength into an image with a gimbal-mounted directional antenna and an SDR; cited for DIY RF imaging.
Watch for: parts 1 and 2 cover the build
In their words
Building a Camera That Can See Wifi | Part 3 SUCCESS!
Nate Gardner on electronics.stackexchange.com, Jun 2019. CC BY-SA.
I stumbled upon this video, where someone is showcasing a radio telescope that detects wifi frequencies and renders them as picture.
secemp9 on electronics.stackexchange.com, Sept 2020. CC BY-SA.
