Messages

61

Software Dev / Re: Chronos V0.3.1 Beta

« on: October 01, 2018, 10:25:06 AM »

This is AWESOME!

Three crazy questions for you:

1. On your next camera can you have the main ram be based on intel Optane... Look how cheap these are:
https://amzn.to/2QlmOJ5

2. What can I do to speed up saving exports ? like will it be faster to save over Gig-E? Is ESATA working ?

3. I'm getting arouns 1fps saving to a USB 3.0 stick... does that sound right?

Hey Dan,

Right now the fastest saving method is via the eSATA port, which can typically sustain write speeds of about 60MB/s before the CPU runs out of speed, or about 25fps when saving raw at 1280x1024. To use this method you will need a 5V SATA drive (this includes almost all 2.5" drives), and an eSATA+power cable such as these available from Monoprice or Amazon

As for USB flash drives, I have quite a few cheap USB drives that exhibit absolutely terrible write performance (as low as 1fps as you have commented), as far as I can tell it seems to vary quite widely as to how well they perform under heavy write loads.

62

Chronos User Discussion / Re: HDMI port - has anyone hooked up an external monitor?

« on: February 21, 2018, 01:11:15 PM »

The HDMI port will be enabled in the 0.4 release when the networking control support is added.

Part of the work to get the networking control working has involved a rewrite of the OMX and gstreamer video pipelines. During that rewrite we have added HDMI support and it works reasonably well - with some caveats. Due to internal limitations on the OMX components from TI, the HDMI port will only work in 720p and 1080p modes. Fortunately this covers most displays on the market, but some oddball displays may not work.

63

Software Dev / Re: Chronos Cam App open source build discussion

« on: December 27, 2017, 11:50:37 AM »

The failure in the Deploy step sounds very similar to some of the issues I encountered when trying to get QT creator working on Ubuntu 17.04, what I found was that newer versions of QT were getting some paths wrong and trying to find the free space of a directory that didn't exist on the target. Rather than trying to figure out why, I simply switched my development machine back to Ubuntu 16.04 LTS, which seemed to work just fine. Can you check which version of Ubuntu and QT creator you're using?

64

Software Dev / Re: Chronos Cam App open source build discussion

« on: December 26, 2017, 04:54:09 PM »

The README in the github repository has been updated with a description of how to get the debug environment working under Ubuntu 16.04. Unfortunately I haven't been able to get debugging working from anything newer (ie: Ubuntu 17.04 and beyond) due to some issues in newer versions in QT creator. There process is roughly broken down as:

• Install a cross debugger and configure the camera kit to use it.
• Add the Camera as a device in QT creator using SSH.
• Kill the camApp daemon via SSH to gracefully shutdown the video pipeline.
• Start your debug build of the camApp from QT creator.

SSH access to the Camera is provided through the mini-USB port labelled "OTG". When you connect your laptop to this port it will come up as a USB network adapter. The Camera has a static IP address on this interface of 192.168.12.1, and your laptop will get an IP address assigned to it via DHCP (this should be familiar if you've worked with Beaglebones before). By default there is no root password, and SSH will accept anything you type for a password until a password is configured.

65

Software Dev / Re: Access OS card with Windows PC?

« on: December 24, 2017, 12:38:44 PM »

The bug in the drop down lists were fixed just in time for the v0.3 beta release, but I don't think they got into the changelog, the git sha of the fix for that was 75acc0caa00dd4d94f669b772ceb44500c105c74. However, this means we have another bug that the resolutions file wasn't updated in the beta release.