Oak-D Pro with USB3 Hub Problem

MightyMaestro

I believe I know the answer to this, but I will ask for advice.

I am having trouble using any of my Oak-D Pro's when connected through a USB3 hub.

It might work once, but mostly not at all, and I believe that it is because of the USB3 hub current limitations. It looks like the hubs are no longer functional afterwards too.

Has anyone experienced the same problem? I really do not want to have to run a power line to the camera, but I can not see an alternative.

Cheers.

Mark

jakaskerl

Hi MightyMaestro
You could use a Y adapter and supply the power externally. This way the hub wouldn't need to supply as much current.

Thoughts?

Thanks,
Jaka

MightyMaestro

Thank's Jaka.

I was trying not to use that, because I have a very tight space, and the Y-Adapter is pretty chunky.

FYI, my results are that on a hub, the Oak-D Pro will only draw around 500mA, as per the USB hub guidelines (per port). Even on a powered USB hub with another device connected, it will only draw 500mA. When connected via the Y-Adapter, it draws between 950-850mA, so using an Oak-D Pro through a hub is not a reliable solution.

FYI (again) The camera can run for a bit through the hub (depending on the manufacturer), but it is unreliable. And… some hubs are not robust enough to look after themselves. I now have a couple of hubs that are dead. The lesson… You might think that it is fine to run through a hub, but it will fail in a short time.

I hope this helps others.

erik

Hi MightyMaestro ,
Which hubs did you try out? We tried a few powered hubs (USB-C ones), and it worked reliably.
Thanks, Erik

MightyMaestro

Hi Erik.

I tried Targus, Simplecom and StarTech.

Can I ask which hub you have been using. That might be the best solution.

Cheers.

Mark

erik

Hi MightyMaestro ,
It was ugreen's USB3 hub, I think this one. Looking at specs, it should allow 5v 2A;

Additional power supply: with the power connector for 5V 2A power supply, we can use multiple power-hungry USB devices such as external hard drives at the same time on the laptop. (Please note that the USB C port marked with "5V 2A" does not support data transfer and only supplies power to the hub itself.)

MightyMaestro

Cheers.

Thanks Eric