Legacy radio going FASST (2.4ghz), Pictures
I have managed to attach the Futaba T6EXP 2.4 GHz transmitter to the buddy connector of my Multiplex Royal Evo 12.
I am not recommending this modification to anybody. I am only reporting what I did and how. Because of the high risk a transmitter shut down could cause, the adapter circuit should be built and used only by people who have sufficient skills in building electronic devices. If you wish to do so you do it at your own risk.
The transmitter sits piggy-packed on a somewhat larger board, which carries the LEDs, the buddy connector, and the 5V voltage regulator.
If you look at the solder side of this board, you will see four leads connected on the left and three leads on the right side of the board. The four leads on the left are for the buddy connector only, so I removed them. The three leads on the right carry ground, battery plus, and the PPM signal.
For this adapter I decided to transplant the piggy packed tx module from the larger circuit board, which carries mostly unused parts anyway, to the new interface board. It took some time to carefully unsolder the three pin rows that carry the module from the larger board, but it payed off.
I was able to make the whole package small enough to fit into a compact box. This box was made by Bopla, type 'E-410'.
See also Profi MC 4000 with 7-channel FASST module