Good news!!

The Turnigy 9x is a cheap Chinese radio transmitter widely sold by hobby king and other retailers under a variety of names.

This is a computerized radio transmitter and is already a great deal for the price and pretty capable if you can figure out how to use the stock firmware.

The microcontroller running the show is a common ATMEGA64 type and is not code protected, so several groups of dedicated hobbyists have completely rewritten their own firmware versions that vastly improve the radio and are open source to boot.

This instructable will show the steps required to modify your radio and reflash it with the firmware of your choice.