OaK-D camera RuntimeError: No available devices

victorlu

Hello, I have been struggling with this error for a while and cannot get any progress 😅

I followed this OAK PoE devices setup tutorial. My machines uses 192.168.50.83 and OaK-D camera uses 192.168.50.8. They are in the same range I believe. These address are setup by the DHCP of router. I can ping camera address under the same LAN. Besides, I can see the occasionally flash so it won't be a power issue.

I tried to turn off the ufw but I got the sample script just freezing which I needed to terminate forcefully. I have no idea how to troubleshoot now in this case. It would be helpful if anyone has an idea about this error.

erik

Hello victorlu ,
Have you gone through the PoE troubleshooting docs? As there are many "gotchas" with the PoE (compared to USB) that you should be aware of when it doesn't work as expected.
Thanks, Erik

victorlu

Thank you erik,

I have solved this issue by myself. I must set the PoE camera IP address next to my machine's IP address though they are in the same subnetwork by the previous setting (netmask 255.255.255.0). For example, the PoE camera should have 192.168.50.80 when my machine uses 192.168.50.83. But I cannot explain the reason behind it. I hope this will help someone who encounters the same error

victorlu

erik Now I'm trying to set up my OAK-D camera without a router because I don't have access to it when I'm outside.

My thought is to connect the OAK-D camera to my machine through a PoE splitter. My machine will work as a gateway to communicate with the camera. I would like to know if you have any tutorials for that setup.

erik

Hello victorlu , you will need to set static IP of the machine so it's in the same subnet as your camera, in order for the machine to find the OAK POE camera. This procedure is also mentioned in the Getting started with POE docs:

By default, PoE devices will try to pull an IP address from DHCP. If a DHCP server isn’t
available on the network, devices will fall back to static IP 169.254.1.222. In this static
fall-back case, your computer will need to be in the same range. This can be achieved
by setting a static IP on your computer (e.g. with static IP: 169.254.1.10 and
netmask: 255.255.0.0).

Thanks, Erik

Greaterworks

Hello,

I am using Raspberry pi 4 for a project with my oak-poe camera. I am connecting the camera to the computer via a network cable. When I run my script , I get this error. However when I connect it to my laptop (a linux OS), it works fine. Is it possible the issue is with my pi?

jakaskerl

Greaterworks
Check this guide to debug.

Thanks,
Jaka