A 5-inch Racing Quad I made for fun. It uses a STM32F4 based flight controller and 50A ESCs for each 1700kv brushless motor. The carbon fiber frame helped it survive some major crashes, and the top mounted battery design kept the battery safe for the most part. I flashed the BetaFlight firmware on it, configured with a GPS and PPM receiver (later switched to ELRS). Unfortunately, I do not have many photos/videos of it.