Recent Posts

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1
Software Dev / Re: Chronos V0.3.2-RC1 and RC2
« Last post by JamesB on November 12, 2019, 04:13:06 PM »
Will try and report back, was not aware of it sorry!
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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by ExperimentalPerception on November 08, 2019, 09:48:28 AM »
Shot some more Vacuum Cannon explosions. This time I shot a full can of soda which turned out really nice, and some eggs that did not turn out so well.. but made a really big mess, lol.

https://youtu.be/LLzCvNZBdSo
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Software Dev / Re: Chronos V0.3.2-RC1 and RC2
« Last post by skronstein on November 07, 2019, 10:25:00 AM »
Is the full version of 0.3.2 any better? http://forum.krontech.ca/index.php?topic=505.0
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Software Dev / Re: Chronos V0.3.2-RC1 and RC2
« Last post by JamesB on November 07, 2019, 12:04:00 AM »
I used the latest beta RC2 and the lag on peaking with an external monitor is gone but now the camera hangs on displaying video at random junctures.  The interface somewhat works but the exposure bar and live feed are gone or frozen. Only fix is getting the camera to shut down and start back up.  Happened about 7 times in a 4hr period.  No idea what is causing it, I tried with and without HDMI plugged in and behaved the same way.   

The frame selector bar on play tries to adjust but it's pegged at 0 and frame 2 even when you try to scroll higher or lower. No image is displayed either.   
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Software Dev / Chronos V0.3.2 full release
« Last post by skronstein on November 04, 2019, 05:02:04 PM »
    +----------------------------------+
   ++                                  ++
   |     Chronos V0.3.2 Changelog       |
   ++                                  ++
    +----------------------------------+


Notable Changes:
 - Automatic ADC calibration during black calibration, which should reduce column banding across a wider temperature range.
 - Add a storage tab to the util menu to view, eject and format the attached storage devices.
 - Speed boost at most resolutions, with a top speed of 1069fps at 1280x1024, and 40420fps at 320x96.
 - Configurable automated power-on and off depending on the AC adaptor status.
 - Option to disable the ring buffer when in segmented recording mode.

Minutae:
 - Factory black calibration is now user accessible from the Factory tab of the util window.
 - The software update button has been moved to the storage tab of the util window.
 - Shipping mode to disable power-on by battery until an AC adaptor is attached.
 - Add a watchdog to reboot the camera in case of a power-on boot failure.
 - Display descriptive error strings instead of number on failure.
 - End of recording from lack of free space generates a warning dialog.
 - Revert to a valid resolution when focus is lost while editing the H/V resolution widgets.

Fixed Bugs:
 - Gated burst record mode may lock up after several trigger edges.
 - Gated burst record mode unreliable when trigger debounce is enabled
 - Memory leak in the M3 video coprocessors which could lead to a crash after lots of H.264 encoding.
 - Ignore video which was recorded during zero-time black calibration (which happens after changing resolution).
 - Stuttering issue on the playback window on new production LCD modules.
 - Fixed deadlock in camera when restoring user settings from external media.
 - Corrupted overlay text at narrow resolutions.
 - Video stream would remain in playback when starting recording via auto-record.
 - Opening and closing the white balance menu can lead to an unexpected change of the custom preset.
 - Bug in calculating the trigger delay on boot (segmented mode only).
 - Ensure a minimum of 0.25 bits/pixel when encoding h.264 video.
 - Crash can occur when saving extremely short videos.
 - After rebooting a camera, focus aid and zebras are sometimes not restored even if they were enabled before the reboot.
 - Restore white balance correctly after reboot

Fixed since V0.3.2-RC2:
 - monochrome cameras being detected as color
 - zombie process when restarting app after reverting settings to defaults.
 - Util window - Auto Power Mode was always shown as Disabled after reentering the Util window, even if it is set to something else

Fixed since V0.3.2-beta-6:
 - Changes to focus aid or exposure aid (zebra stripes) would have no effect until resolution is changed.
 - Changes to exposure may be overwritten during black calibration.
 - Bad image quality at 336x120 resolution
 - Util window, storage tab - bottom of text cut off if device has multiple partitions
 - Factory black cal (black cal all resolutions) would get overridden by old user black cal, if a user had done their own black cal, even before.
 - Fix frame stuttering when focus peaking is enabled.

Known Bugs:
 - The second frame of videos saved in all formats is not from the correct location in the selected region.
 - The first frame of videos saved in formats other than H.264 format is corrupted.
 - Very rare crashes of the video system, causing the camera to lock up on the playback/save window; MTBF seems to be somewhere in the 2-5k recordings at present.
 - Gated Burst record mode only: Live display does not appear to be buffered correctly when the trigger signal is inactive.
 - Speckles in image when recording below 60fps
 - Black cal makes the image look very dark at low framerates when recording below about 45fps
 - Saved videos will have a date modified of 7 or 8 hours earlier than what is set on the clock in the Util menu.
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Software Dev / Re: 2.1 / 1.4 frame rates
« Last post by jasonfish on November 02, 2019, 12:38:13 AM »
I think this (or similar?) was asked here

http://forum.krontech.ca/index.php?topic=464.msg2756#msg2756
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Software Dev / 2.1 / 1.4 frame rates
« Last post by gyppor on November 01, 2019, 08:04:03 PM »
I was looking at the data sheet for the 2.1 and noticed the frame rates on the 2.1 are a fair bit ahead of the 1.4 at higher resolutions, but as horizontal resolution drops the 1.4 takes the lead. For example at 1280x720 the 2.1 gets 2,100 fps to the 1.4's 1,500, however at minimum resolution (320x96)the 2.1 hits 26,000 fps while the 1.4 goes all the way to 40,000.

Is this due to a different architecture of the sensor or the software? Do you expect that updates to the 2.1 will allow full bandwidth at smaller horizontal resolutions?

I'm very pleased that the 1.4 is able to increase frame rates all the way down to 320 pixels from the initial 640. You guys are doing an awesome job on the software support front.

*(I also think there is a mistake in the 2.1 chart. 1440x1080 and 1440x720 show 2.24 gigapixels/s)

G
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Software Dev / Re: Camera powers off after update to 0.3.2
« Last post by Jay on November 01, 2019, 10:32:35 AM »
I had the same issue today. Didn't used the cam for a week. Was constantly on power connection.
When I tried to start the cam, I just had a black screen. Tried several times, same result. When I checked the forum and found this thread, removing the battery for a few seconds while disconnected from the power, made the cam boot normal again. I do not have any of the power down issues, just to mention that, the cam just refused to boot.

Software version 0.3.2
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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by Buddlich on October 31, 2019, 04:52:23 PM »
I had some fun with matchsticks :)

https://youtu.be/u6L1EyhZ5qw
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Chronos User Discussion / Re: Chronos 1.4 Footage Thread
« Last post by nik282000 on October 30, 2019, 08:48:34 AM »
I bought the cheapest LED worklights from a hardware store and added filter capacitors to the driver's output. They now give a flicker free, cool light but have to be run from a reduced voltage. The designers take into account the 'off time' of the flicker in order to drive the LEDs brighter when they are on, applying full mains voltage runs the LEDs at ~1.4x their "rated" wattage.
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