Tell us about yourself!
Quadcopter frame kit 250 FPV from Amazon. Meant for racing and quite small. I am looking at remaking it with a homemade frame as in the instructions.
The code that you download is specifically set up for Multiwii. I think it would work with another multiwii flight controller but NOT any other make of flight controller (without rewriting all the code - which is way beyond me).
I used (Multiwii and Megapirate AIO Flight Controller w/FTDI (ATmega 2560) V2.0) from hobbyking but these are currently showing out of stock. On googling this came up: https://www.gearbest.com/development-boards/pp_694...but depends on your location. I think the hobbyking ones came from Europe.