Hi – I'm new to CHDK and am trying to take advantage of some of the new functionality provided by USB remote V2. I want to trigger two cameras (one visible and one near-infrared) simultaneously using an RC signal. I am currently able to do that by hooking up a switch to my RC receiver and setting the CHDK Remote Parameters to detect on/off voltages. My goal is to be able to eliminate the switch and interpret the pulse information directly from the RC receiver. My understanding is that the pulse width for my receiver ranges from under 1ms to about 2ms and I haven't been able to figure out how to record that information using get_usb_power. The pulse width readings I'm getting are sporadic and much larger (~10 and greater) then I would expect and they don't seem to change when I change the pulse width on the RC transmitter. Is it possible to get sufficient precision to detect the changes I'm looking for (<1ms and > 1ms?
It's possible I have the USB wired wrong [RC signal (white) => usb negative (black) and RC + (red) => usb + (red)] but if that's the case I'm not sure how to fix it.
Is there anyone out there using USB remote V2 and reading the pulse width from an RC receiver? Any suggestions?
I have a Canon A2200 and am using CHDK-a2200-100d-1.1.0_BETA.