Recently, "The Thought Emporium" YouTube channel uploaded a video showing how they have created a 'WiFi Camera' using a HackRF and helical antenna mounted on a motorized Pan-Tilt mount.
The Thought Emporium has actually already done this experiment back in 2018, as seen in a previous post; however, in the latest video, they iterate on the design, releasing a new open-source 3D printable version.
The idea behind the 'WiFI camera' is to point the directional helical antenna in different directions using the motorized mount and measure the WiFi signal power using the HackRF at each spot it points towards. Each measurement results in a heatmap pixel, and once enough pixels have been collected, an image is formed.
