GPIO input issue chameleon 3
Answered
Hello,
I configured two chameleon 3 camera this way:
One arduino Uno sends a capture triggering signal at 50Hz (delay of 10 microsdeconds between HIGH/LOW state of the arduino pin) to the camera through GPIO line 2. Then the camera sends an output signal of this trigger through GPIO line 3 to an external device. To do this I turned the trigger mode "on" and I made GPIO line 2 as input and line 3 as output by external trigger. The strobe delay and duration features are all at 0. I timed the exposure time to be 689 microseconds and the acquisition is "continuous".
In this configuration one camera is working as expected. When I was setting up the other camera the same way, it first worked as expected. However, the very moment I changed the exposure time value from 689 microseconds to something much larger (beyond 25000 microseconds I think) to get more light capture to adjust the cropping, the triggering through line 2 stopped working altogether. I turned back this parameter to 689 microseconds, and the issue remains the same, I basically cannot trigger this camera anymore. The output works fine when the trigger mode is off. I tested the same cable/wire material on both cameras and the issue only stems from this problematic camera. I also tested independantly the Arduino pulse on another device and everything is working as intended.
I am not sure what I am missing, I feel like I messed up another feature I am unaware of even though I changed only one parameter. I tested different values and I still have this issue. I did not dare to try this out on the functional camera as I do not want to mess it up. Can you help me on this? Thank you
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Official comment
Hi,
Thank you to both of you. Sorry I forgot to answer here. Actually what happened is that the cable leading to the appropriate GPIO wire may have been badly soldered somehow (it was not visible) and this cable issue happened at the wrong timing, leading me to wrong conclusions. When I resolded it, it worked fine again.
Thank you again for your inputs.
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Hello JYM,
The CM3 has multiple inputs; it may be that one of the inputs run into a hardware issue, unrelated to the increase in exposure time, but happening at the same time. I would advise connecting to the CM3 camera using a different input pin, and see if that works.
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Hello,
I was just following up on this question to see if you managed to get your trigger input working on the CM3. I see you have made other support tickets with us and didn't bring this up, so I hope this was resolved for you.
Thank you,
Demos
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