Dart camera timeout when using ROS (or Pylon) about pylon-ros-camera

[pablo-quilez]

Hello,
I am not completely sure, but it seems to be related to the USB controller or the pylon library for ARM. Which operating system are you using? I would suggest you to test the camera with a x86 computer and e.g. Ubuntu to discard other possibilities.
Thanks!

[m-binev]

Hi @jveitchmichaelis ,

I suppose you experience hardware issues.
First of all, please replace the USB cable. I would recommend you to avoid using cheap USB cables, but recommended by Basler ones. The reported error (0x10000038) assumes that the connection to the camera is not stable, e.g. because of low-level errors.
Also, please apply the following settings from the troubleshooting section:

Increasing Packet Size

For faster USB transfers you should increase the packet size. You can do this by changing the "Stream Parameters" -> "Maximum Transfer Size" value from inside the pylon Viewer or by setting the corresponding value via the API. After increasing the package size you will likely run out of kernel space and see corresponding error messages on the console. The default value set by the kernel is 16 MB. To set the value (in this example to 1000 MB) you can execute as root: echo 1000 > /sys/module/usbcore/parameters/usbfs_memory_mb This would assign a maximum of 1000 MB to the USB stack.

[pablo-quilez]

Hello, as no new infos where provided and ARM is not the main ROS architecture, I close the issue. Please don't hesitate to open the topic again if you have any question. Thanks!

[jveitchmichaelis]

Heya thanks - it's probably a custom cable issue. We can't use a normal high quality USB3 cable as they're not flexible enough. I found some odd issues with port selection (the camera is quite picky about that) but it seems to be reliable in the configuration that I'm using now. I did also drop the bandwidth and that seems to work fine.

[pablo-quilez]

Hi, nice infos. We hope that your set-up will continue working fine!