crosshairs

Hi FlightTest Forum, first time posting. Looking for some info on a project I am working on. Sorry if this is the wrong area. Basically, I want to build a custom RC transmitter using an Arduino Mega and OpenTX, simple enough... BUT, I also want it to be able to use it with the TBS Crossfire...

As a kid I always remember my Dad and I making up crazy airplane games to play on the checkerboard bedspread with our die cast planes. I was recently looking for something similar that my kids and I could enjoy, and I ran across "Crosshairs" by Stephen Tavener. My kids really enjoyed playing it...