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Chronos User Discussion / Gated triggering not working. What am I doing wrong?
« on: October 10, 2020, 01:25:49 PM »
Hello nice girls and guys.
I would like to create a very sudden fps-change from 1000 fps to 1 frame per 10 seconds (timelapse) with gated triggering on IO3. So start e.g. with 1000 fps and 180 degree for say 2 seconds, then suddenly doing timelapse with one frame each 10 seconds, with the same exposure times for each frame of course. I want to drop crushed ice, capture that with 1000 fps, then, when the ice stopped moving, I want to switch to Timelapse mode: one frame every 10 seconds.
I succeeded to make the camera film with 1000 fps with the external signal, but I failed to do the timelapse part. The Trigger IO is set to IO3 - Shutter Gating, no invert, no debounce. I connected an Arduino to IO3 and provide 5 Volt to the camera for triggering.
In Timelapse mode I expected the camera to expose the frames as if in 1000fps mode, but instead everything is bright and I get a lot of motion blur. I can't figure out, what I am doing wrong. Everything seems to meet the requirements for the gated burst signal as described in the manual. I also tried with "Exposure trigger" mode for IO3, which should also work, since the falling edge of the input signal is not important for the exposure time, no?
Here is the code that works as long as the delay(10000) is commented out:
loop()
{
// delay(10000);
digitalWrite(CHANNEL_TRIGGEROUT_CAMERA, HIGH);
delayMicroseconds(500);
digitalWrite(CHANNEL_TRIGGEROUT_CAMERA, LOW);
delayMicroseconds(500);
}
Anyone having an idea?
Thanks!
Martin
I would like to create a very sudden fps-change from 1000 fps to 1 frame per 10 seconds (timelapse) with gated triggering on IO3. So start e.g. with 1000 fps and 180 degree for say 2 seconds, then suddenly doing timelapse with one frame each 10 seconds, with the same exposure times for each frame of course. I want to drop crushed ice, capture that with 1000 fps, then, when the ice stopped moving, I want to switch to Timelapse mode: one frame every 10 seconds.
I succeeded to make the camera film with 1000 fps with the external signal, but I failed to do the timelapse part. The Trigger IO is set to IO3 - Shutter Gating, no invert, no debounce. I connected an Arduino to IO3 and provide 5 Volt to the camera for triggering.
In Timelapse mode I expected the camera to expose the frames as if in 1000fps mode, but instead everything is bright and I get a lot of motion blur. I can't figure out, what I am doing wrong. Everything seems to meet the requirements for the gated burst signal as described in the manual. I also tried with "Exposure trigger" mode for IO3, which should also work, since the falling edge of the input signal is not important for the exposure time, no?
Here is the code that works as long as the delay(10000) is commented out:
loop()
{
// delay(10000);
digitalWrite(CHANNEL_TRIGGEROUT_CAMERA, HIGH);
delayMicroseconds(500);
digitalWrite(CHANNEL_TRIGGEROUT_CAMERA, LOW);
delayMicroseconds(500);
}
Anyone having an idea?
Thanks!
Martin
