I got a bit obsessed with the planes going over my house, so I'm building a little radar for my desk. It pulls live flight data over Wi-Fi and draws what's overhead on a round screen — range, bearing, altitude, the airline and where it's headed. No phone, no app to fiddle with.
A quick clip of the scope in action — blips moving across, tap one and the whole readout comes up. Still rough around the edges, but it works.
Watch the longer walkthrough