DX5e 2 to 3 position switch mod

[merlcrawl]

Ok i bought a spektrum DX5e today knowing it only had a 2 position switch with little money. I also noticed that just by looking at the thing you could totally tell the trainers switch could be modified to be the 3rd position switch. im just in need of some assistance like were to cut into the 5th channel switch's line to tie the adjuster pot for the 3rd position and so on.. here are some inside pics below.

(thougth just in) could i cut the trainers switch lines, strip the 5th channel's switch's lines solder negative to positive but with a pot adjuster in between the line? and would i need a diode before it??

 

[clockworks]

I don't know the DX5, but I'm guessing that it's a 5 channel, non-computerised version of the DX6.
If that's the case, you need to keep the trainer switch, because it's also the bind switch.

If you want to use the 5th channel as a 3-position switch, you need to find out if it's fully proportional, or just "on-off". I posted in another thread a few days ago how to test this for a DX6i. It involves wiring a pot to the ch5 signal wire.

The easiest option, and one which will definitely work, is to modify one of the stick channels into a 3-position switch.

Work out what controls you want to use, and which sticks will work each channel, and, if you've got a spare stick channel, I'll help you convert it.

 

[merlcrawl]

I don't know the DX5, but I'm guessing that it's a 5 channel, non-computerised version of the DX6.
If that's the case, you need to keep the trainer switch, because it's also the bind switch.

If you want to use the 5th channel as a 3-position switch, you need to find out if it's fully proportional, or just "on-off". I posted in another thread a few days ago how to test this for a DX6i. It involves wiring a pot to the ch5 signal wire.

The easiest option, and one which will definitely work, is to modify one of the stick channels into a 3-position switch.

Work out what controls you want to use, and which sticks will work each channel, and, if you've got a spare stick channel, I'll help you convert it.

what does the bind switch do?? but ya i thought of that rout i just want to see if i cant find out how to do it..
on this one the servo is active in either position thats why im thinking of splicing into the wire and putting a pot in, im not sure if its just that simple tho...

 

[clockworks]

The bind switch is used to pair the Tx and Rx, like pairing a Bluetooth headset to a cell phone.

Channel 5 is meant to used for retractable landing gear on an airplane. The switch will drive the servo from one end to the other, it won't stop in the middle.

You can try replacing the switch with a pot - you could use one of the stick pots to save buying parts.

With the Tx switched off, meter both ch5 switch terminals to ground. Flip the switch, and meter again. One terminal should be at ground (zero ohms on the meter) in both positions. The other should be at ground in one position, and more than 100 ohms in the other position.
Unsolder the wire from the switch terminal that changes, and connect it to the centre terminal of one of the stick pots.
Power up, and see if ch5 servo moves when you move the stick. If it does, you can convert ch5 to a 3-position switch.

 

[shanks]

does anyone have a step by step for doing this modification?

i would like to turn one of the channels on a stick into a 3 way toggle for a winch.

most appreciated!

 

[losikid]

does anyone have a step by step for doing this modification?

i would like to turn one of the channels on a stick into a 3 way toggle for a winch.

most appreciated!

are using a dx5e?

 

[shanks]

LosiKid, thanks for the help so far! will keep you posted on my progress. Appreciate the pics in this thread before i open up my dx5e.