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Old 05-08-2012, 05:17 PM
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Default Re: how to change controls on Spektrum DX6i?

Quote:
Originally Posted by JensR View Post
Why would you switch the signal?
That means your switch needs to be able to switch each signal - you'd need a 4 pole, double throw switch.
If you switch minus or plus, you only need a single pole, double throw one - easier to get, easier to wire up.
Or am I missing something?
Are you using some kind of electronic switch, like the ones from Servonaut or CTI?

You could use a servo-actuated switch, too. And then it is (IMO) better to use the SPDT switch.

One thing to consider: If you reconnect a servo or ESC, it will "jump" to the position/speed the stick demands, which might be different from its current position.
Go look at the diagram I do show using a SPDT switch to cut the power if using all servos.

Here is you explanation for cutting the signal the alternative for ESC's instead of servos.

Well for this to work you have to supply power to the receiver to maintain radio contact to operate the switch or a servo operated switch. So the receiver will always have the ability to send a signal. On an ESC if you don't cut the signal it will always be able to work regardless of what you do with the power or ground in the lead going to the receiver since the ESC gets it's power from the battery connected to it. Most ESC's have a BEC in them so the power and ground are only needed to power a receiver and not needed in this set up.

Most of the good ESC's (unless you use the cheapest one you can get) have a fail safe built in if it looses signal. Even the cheap ESC's that come in the Tamiya kits have a fail safe in them. You should have know problem cutting the signal. Digital servos can have fail safes programed in as well.

Dimension Engineering offers a nice DPDT electronic switch Link that you can Y harness together to control 4 separate inputs at once. so for about $80 you can make a 5 ch radio into a 8 ch radio with all 8 Ch's being proportional. $30 a piece for the switches and $20 for a Y harness and extensions.

Travis
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