Help with triggering a Camera shutter via CHDK

[Alpina540 0]

Hi, I have been trying to make a circuit that will give 4 volts on one extreme and on the other extreme of the same channel 0 volts.

It should operate from a servo plugs signal.

I don't want to hack the camera open to get to the shutter switches contacts.

Any ideas how to do this?

I tried using a servos circuit but the servo board gets very hot even though it does trigger the camera via the switch on the tx.

I would greatly appreciate any help.

Thanks

-Anson

[Mr.RC-Cam 121]

Over at your rc-groups thread I noticed that one fellow mentioned that CHDK2 can decode R/C signals directly. This method seems like a nice/simple solution.

http://www.rcgroups....d.php?t=1282185

Or how about this one?

http://www.rcgroups.com/forums/showthread.php?t=1239899