Replace a trimmer with a three way switch

The shreddiquette needs Channel 5 of your Receiver to select the flying mode.



There are three modes: Motors off, Acro Mode and Hover Mode. To switch between these modes usually a trimmer is used. However switching between flight modes with a three way switch is more comfortable and faster.

For the Hobbyking T6A, the FlySky FS-CT6A, the Excee RC and the Turbotrix TBXT6 the following procedure to replace a trimmer is working:
 * 1) dismantle the Radio unit and find the trimmers
 * 2) solder a 2,7k resistor between pin1 and pin 2 and between pin 2 and pin 3 of your new switch (see picture above)
 * 3) cut or desolder the wires from the trimmer and solder them to the switch (the blue wire has to be at pin 2)0000001255_3SiMiPsg36.jpg
 * 4) install the switch and put it the way you like and try it.

For the Robbe Futaba F-14 you just need to solder a 82k resistor between pin 2 of the switch and the wire. (see second picture)

A trimmer is measuring the ratio between R_12 and R_23 (see picture).

Just measure the resistance between pin 1 and pin 3 of your trimmer with a multimeter, note the resistance between pin 1 and pin 3 as R_13 and try to solder R_13/2 between pin 12 and pin 23. This should work in most cases.

Now the switcher behaves like the trimmer in each end position and in neutral position

Have fun