"Thanks for the info - can you clarify if it is only the camera shutter RELAY pin that will send the modified pwm->voltage or will it also send it if I set up the CAM parameters for SERVO pin?"
"Thank you! If someone high up reads this thread please just put the above sentence in the CHDK tutorial about the wire, it will save people a ton of time!"
OK, I have searched and read many things and gone through a lot of script testing with this wire that I thought was good. I have a USB cable for my camera that has the RED and BLACK wires connected to the SIGNAL and GROUND of the APM output. I have…