Hi,
I am working with a ZED X One GS camera connected to a ZED Box Mini.
I have configured the system in master mode by setting sync_mode=0 in the zed_x_daemon.service, and I have connected a strobe controller to the SYNC-OUT pin (with common ground).
My understanding is that in this configuration, the ZED Box Mini generates a periodic trigger signal on SYNC-OUT based on the camera frame rate.
So if the camera is running at 30 FPS, SYNC-OUT should output 30 pulses per second (one pulse per frame??
is there any other documentation i need to refer for hardware triggering it? and also i wanted to ask if i can capture images based on the external signals ..
Thanks!
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Hi,
Did you take a look at our documentation on external triggering ?
Let us know if you have additional questions!
Hi, also revisiting this now that the triggering has been released, and finding that it is not exactly a ‘trigger’ in the way I would have expected.
I have an external strobe which I want to fire at the same time as image capture for scene illumination, and by experimentation I have managed to roughly align the strobe with the image acquisition on a fixed frame rate. Further to this though, I need to find exposure-time values for each exposure level, such that I can fine-tune the the strobe-on time and reduce wasted energy by illumination outside of the image exposure window.
Ideally, I would also like a way to trigger exposure directly, rather than wasting energy on illuminating 15fps when I am only actually grabbing a few of those frames.
My current approaches to this are to either dynamically adjust the triggering in master-mode, to set the frame rate to whatever fractional value is required(any arbitrary value between 0 and 15 FPS), and hope that there is not significant lag in the camera adjusting FPS based on trigger signal. Or in slave-mode, to try and predict accurately enough the timestamps at which image acquisition will occur, then trigger strobe ahead of the grab call. such that the camera can keep capturing at 15FPS, but I only illuminate the frames I am actually using.
Do you have any advice on the best way to achieve this?
yes i have followed the same sync out but that generates periodic signals at the camera’s framerate ..what i need is the strobe lights to be synchronised with the camera ..say at the rising edge the camera captures images and at the same timethe strobe lights turn on as welll …
also is it possible i send a signal to the camera and it captures images based on the external signal received .?
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