Just popped over form NUI Group…

I’ve read little bits about the theory of syncing the camera to a pulsed led but nothing definitive.

So - can it even be done or should I give up now :o)

Liking the new forum by the way!

paolo - 04 February 2010 03:34 PM

Just popped over form NUI Group…

I’ve read little bits about the theory of syncing the camera to a pulsed led but nothing definitive.

So - can it even be done or should I give up now :o)

Liking the new forum by the way!

Thanks!

Yes this is doable although you would actually sync your LED pulse to the camera VSync signal.

AlexP

doable is good!  That’s what I meant - sync the LED to the camera.

Where do I get the VSync signal?  I was hoping it would just be a pin on the board that would give me this - too easy I’m guessing…

Maybe build an Arduino controller or something - you can tell I’m TOTALLY guessing here :o)

I see you’ve already discussed it HERE- I clearly didn’t do very thorough search :o)

VSYNC - that seems to be the key word - also found info HERE.  Someone else mentions an Arduino too - great minds think alike!

You might want to experiment with upcoming CL-Eye Multicam API. In there we will expose the LED control so that you can use this to control your external light source. And yea, using en external micro-controller such as Arduino might help in precise control of the lights.

Thanks or the info.

Hello everyone!

I have done some experiments with VSYNC pin, and it really works!

However, things get out of control, when exposure parameter of the
camera gets values about 200 and higher.

Please see more information in this thread:
http://codelaboratories.com/forums/viewthread/261/

You’ll also find there a little program to experiment with synchronization,
without any need for hardware modifications - it uses camera built-in red diode.

Attached frame which should be all dark (the diodes are off).
It happens only with high exposure values.

Any advice?

Best regards,

Got to check that out on my full hd camera settings.