I run a Raspberry Pi 3B to track airplanes that fly over our house. It then uploads the data to flightradar24.com. It is a really neat set up, all for under $100. If you are an airplane geek, and like this stuff, check it out.
The image is the polar plot of the 800 or so planes I have tracked so far today (UTC time). It is pretty obvious what the flight pattern into Scottsdale Airport (KSDL) is today.