Setup Help OAK-D PoE and OAK-D SR PoE

bfranke

Hello,

I am trying to test my two cameras OAK-D PoE and OAK-D SR PoE with the script luxonis/depthai-pythonblob/main/utilities/cam_test.py.

I get the following error:

DepthAI version: 2.28.0.0
DepthAI path: /home/fran_bi/.local/lib/python3.10/site-packages/depthai.cpython-310-x86_64-linux-gnu.so
Traceback (most recent call last):
File "/home/fran_bi/Projects/depthai/depthai-python/utilities/cam_test.py", line 252, in <module>
with dai.Device(*dai_device_args) as device:
RuntimeError: No available devices

The cams get connected via ethernet cable to my laptop and are powered via an USB-C cable via the Programming Board (RVC2 PoE models) that was included in the shipment of the cameras.

On rare occasions (no setup changes, maybe 1/10 cases), the connection works for the OAK-D PoE, but I not yet had success with the OAK-D SR PoE on a single occasion.

I have the same errors under Linux (Ubuntu 22.04) as under Windows 11. The light on the cameras lights up, so I assume the camera boots up correctly.

I also did not have any success with the depthai_viewer, which gives me an I/O error (if it even finds the camera).

Could you please provide me with some help setting this up?

erik

Hi @bfranke ,
I don't think that's supported - just tried it out, and I get Failed to find device after booting, error message: X_LINK_DEVICE_NOT_FOUND 12/12 times I tried. You'd want to either power+communicate via USB-C, or do power/comms via ETH (POE). Do you plan to do it this way just for testing, or was this part of solution architecture?
Thanks, Erik

bfranke

Hi Erik, thanks for letting me know about this! This was just for testing, for the final system we plan to use PoE only. Then I will adjust my tests accordingly.

Thanks, Benedikt

erik

@bfranke upon further testing (as HW-wise is should be possible, we just haven't looked into it) we have found out that you need a "dumb" power supply instead of "smart" power adapters that do power negotiation (like my mac charger). You just need a source that will supply 5V continuously and that's it, like this ICY Box we had in office, but likely any "dumb" power adapter should work (as long as

Another example of "dumb" adapter that only provides 5v and doesn't do fancy negotion / has overcurrent protection and it worked as expected with the OAK ToF:

erik

(Will be adding this to the docs as well)