Modifying the FLYSKY T6 for Ardupilot (one channel, 2 switches, 4 flight modes!)

In this video the FLYSKY T6 transmitter is modified for the ArduPilot quadcopter flight controller. After this modification it’s possible to select 3 flight modes like stable, altitude hold and loiter with a 3 position switch. Another switch is used for the return to home function.
In short: 2 switches, one channel, 4 flight modes!
Because I already had the transmitter open I made a small modification so I can adjust the battery voltage with a potentiometer. This is very useful when using rechargeable batteries.
I bought the transmitter here:
www.dx.com/p/fl...
Music: www.bensound.com