Raspberry Pi 5 on Ubuntu with Oak-D-Lite

PitoSalas

I've tried a variety of utilities and tools and cannot get the camera to work on my Pi. Here's my context

Ubuntu 22.04 on Raspberry Pi 5
Headless. Working over ssh in a shell.
Three different brand new USB-C to USB A, 3.1 Gen2 cables of different lengths
Monitoring the overall draw of the system (pi and camera) never goes about 0.55A
Pi is powered by a PD USB C which I verified to be successfully working in PD mode

1) [dome:~/ros2_ws] oakctl list
No devices found.

2) oakctl connect

✖ Failed to make connection. oakctl command failed:

0: Failed to make connection

1: There are no available connections.

[dome:~] python3 depthai-python/examples/MobileNet/rgb_mobilenet.py

[1944301081CF077E00] [4.1] [1.048] [system] [warning] ColorCamera IMX214: capping FPS for selected resolution to 35

[1944301081CF077E00] [4.1] [1769275785.976] [host] [warning] Device crashed, but no crash dump could be extracted.

Traceback (most recent call last):

File "/home/pitosalas/depthai-python/examples/MobileNet/rgb_mobilenet.py", line 98, in <module>

inRgb = qRgb.tryGet()

^^^^^^^^^^^^^

RuntimeError: Communication exception - possible device error/misconfiguration. Original message 'Couldn't read data from stream: 'rgb' (X_LINK_ERROR)'

[dome:~]

It seems to always crash after zero or up to 10 frames. I have tried numerous other scenarios and always fail.

Does Luxonis support monitor this forum? Because I think my device is defective.

jakaskerl

PitoSalas
Does it crash regardless of the FPS you set?

Thanks,
Jaka

PitoSalas

In the meanwhile I discovered this: slgrobotics/depthai_rospi?tab=readme-ov-file

The readme says that the key was reducing the FPS and referenced an old issue on the Luxonis site which apparently has not yet been fixed.

With that package and in the specific case that it tries, my camera works at least in monochrome stereo mode. I dont totally understand the code: in the config it sets the fps to "3" and in the launch file it seems to set something called fps_divider to 10.

But bottom line is that for this specific case, with the Oak-D-Lite powered via usbC to usbA on the Pi5, the error does not appear and I actually get an image. It feels like an fps of 3 but not sure.

jakaskerl

PitoSalas
cc @Luxonis-Adam