OAK-D Pro PoE low fps.

xzzjoe

Hello,

I am working on an OAK-D Pro PoE and I am getting low fps (1fps) from color camera with 1080 resolution when I am running depthai_demo or other demo experiments on the website.

I tried running poe_test script provided, and I got 10 on the speed section. My ISP provides upload speed of 100MB/s, and I am using this PoE Injector. What could be the causing issue of high latency and low fps?

Is it possible to connect the device to the host through USB, or use a raspberry pi for usb boot through the m8 connector?

jakaskerl

Hi xzzjoe

Slow POE switch - supports 10/100
Possibly slow eth cable, slow router?

Could you describe your current setup? Also use a different switch if you can.

Thanks,
Jaka

xzzjoe

Hi Jaka,

Thank you for you reply.

Let me describe my setup:

I am currently getting internet from an ISP called Starry, I am using the router given by the ISP. This is the model of the router given

They also supply a modem, I don't think this part matters that much.
I believe all my ethernet cables are cat6e standards, ( i might have to test them throughly if no other solution works). I connect the injector(switch) from the router and then connect the OAK module to the injector.
My host (MPL 14 inch), connects to the LAN through WiFi. I tried switching between the 5G and 2.4G on my host, I did not see much difference

Regarding the injector, I tried switching between both input ports(assuming ports have different bandwidth according to product description ). I always get 10 on speed when I run the speed test. I had a similar setup when I was living in another place, I could get stable 24fps on depthai_demo on default resolution, this leads to me to believe the injector should not be the issue.

P.S I have also tried running oak-bandwidth-test.py , and I always get this err:

[2023-08-21 23:22:05.792] [warning] Monitor thread (device: 1844301051EAC51200 [192.168.99.31]) - ping was missed, closing the device connection

F: [global] [ 527797] [] tcpipPlatformWrite:300 Cannot find file descriptor by key: 56

seems like connection issue, not sure if they tells a bit more.

Thanks,

Zhizhou

xzzjoe

I'd like to investigate a bit more about wired connection, since M8 cord is provided. I am slightly confused by the USB support on OAK-D-Pro PoE, does the USB connection here mostly used for connecting to other accessories so OAK can connect to them as the host, or such USB connection can be used like traditional usb connection to host like other OAK devices?

I have lots of softwares I'd like to test so getting past the connection issue and resolving it later would be ideal for me at the moment.

erik

Hi xzzjoe ,
M8 can be used as normal USB2 connection, it can't be used to connect USB accessories to OAK. You'd need a M8 programming board (or similar) to access the USB2 lines.

Note that your ISP provider's bandwidth (uplink/downlink to the internet) doesn't matter in this case - it's only the local link that matters. My guess is that your router is an older 100mbps router, which causes a these issues.

Thanks, Erik