Hi, some later questions from that thread that I wanted to post into another thread (FFC 4P PoE no camera detected - Luxonis Forum) for cleanliness.

The depthai-viewer is not working for this board with the two cams mentioned (IMX477, IMX582), It's on the newest version. The same depthai-viewer works for the 4-port PoE board with the same 2 cameras:

(DepthAITests) PS C:\Users\Lookout\PycharmProjects\DepthAITests> depthai-viewer

[2023-10-26T18:17:46Z WARN eframe::native::file_storage] Failed to parse RON: 4:5576: Expected end of string

Backend started successfully.

[2023-10-26 14:17:47] INFO [websockets.server.wrap:707] server listening on [::1]:9001

[2023-10-26 14:17:47] INFO [websockets.server.wrap:707] server listening on 127.0.0.1:9001

[2023-10-26T18:17:47Z INFO ewebsock::native_tungstenite] WebSocket handshake has been successfully completed

return _run_code(code, main_globals, None,

File "C:\Users\Lookout\anaconda3\envs\DepthAITests\lib\runpy.py", line 87, in _run_code

exec(code, run_globals)

File "C:\Users\Lookout\anaconda3\envs\DepthAITests\lib\site-packages\depthai_viewer\_backend\main.py", line 159, in <module>

DepthaiViewerBack()

File "C:\Users\Lookout\anaconda3\envs\DepthAITests\lib\site-packages\depthai_viewer\_backend\main.py", line 53, in init

self.run()

File "C:\Users\Lookout\anaconda3\envs\DepthAITests\lib\site-packages\depthai_viewer\_backend\main.py", line 141, in run

self.result_queue.put(self.handle_action(action, \*\*kwargs))

File "C:\Users\Lookout\anaconda3\envs\DepthAITests\lib\site-packages\depthai_viewer\_backend\main.py", line 119, in handle_action

return self.on_select_device(device_id)

File "C:\Users\Lookout\anaconda3\envs\DepthAITests\lib\site-packages\depthai_viewer\_backend\main.py", line 81, in on_select_device

device_properties = self._device.get_device_properties()

File "C:\Users\Lookout\anaconda3\envs\DepthAITests\lib\site-packages\depthai_viewer\_backend\device.py", line 191, in get_device_properties

biggest_width, biggest_height = [

IndexError: list index out of range

  • The depthai-viewer works if only the LCM48 is connected.
  • cam_test.py works when both cams are connected (when connected to middle and left port, one cam is oversaturated, when connected to middle and right, it looks good). But, I can't switch between them in operation, can I? More importantly, could I stream them simultaneously (showing both together)?

I have set up a small sample minimal code example to test what I'd like to achieve:

from pathlib import Path

import blobconverter

import cv2

import depthai

import numpy as np

pipeline = depthai.Pipeline()

# Uncomment to get better throughput

pipeline.setXLinkChunkSize(0)

control = pipeline.createXLinkIn()

control.setStreamName('control')

xinTofConfig = pipeline.createXLinkIn()

xinTofConfig.setStreamName('tofConfig')

xout_rgb = pipeline.createXLinkOut()

xout_rgb2 = pipeline.createXLinkOut()

cam_rgb = pipeline.createColorCamera()

cam_rgb2 = pipeline.createColorCamera()

cam_rgb.setPreviewSize(1920, 1080)

cam_rgb2.setPreviewSize(1920, 1080)

cam_rgb.setInterleaved(False)

cam_rgb2.setInterleaved(False)

cam_rgb.setBoardSocket(depthai.CameraBoardSocket.CAM_A)

cam_rgb2.setBoardSocket(depthai.CameraBoardSocket.CAM_C)

# For the rgb camera output, we want the XLink stream to be named "rgb"

xout_rgb.setStreamName("cama")

xout_rgb2.setStreamName("camc")

# Linking camera preview to XLink input, so that the frames will be sent to host

cam_rgb.preview.link(xout_rgb.input)

cam_rgb2.preview.link(xout_rgb2.input)

device = depthai.Device.getDeviceByMxId("")

dai_device_args = [pipeline]

if device[0]:

dai_device_args.append(device[1])

with depthai.Device(*dai_device_args) as device:

q_rgb = device.getOutputQueue("cama")

q_rgb2 = device.getOutputQueue("camc")

frame = None

frame2 = None

while True:

    in_rgb = q_rgb.tryGet()

    in_rgb2 = q_rgb2.tryGet()

    if in_rgb is not None:

        frame = in_rgb.getCvFrame()

        cv2.imshow("preview", frame)

    if in_rgb2 is not None:

        frame2 = in_rgb2.getCvFrame()

        cv2.imshow("preview", frame2)

    if cv2.waitKey(1) == ord('q'):

        break

I only ever get frames from one stream. In this configuration above, I only get streams from port C. If I uncomment everything for camera 2, I get the other camera (from port A).

    BenjaminKiefer if in_rgb is not None:

        frame = in_rgb.getCvFrame()

    cv2.imshow("preview", frame)

if in_rgb2 is not None:

    frame2 = in_rgb2.getCvFrame()

    cv2.imshow("preview", frame2)

    Both cv2 windows are named preview 😉
    They should have different names, otherwise cv2 displays both frames in the same window.

    Thanks,
    Jaka

      Ah your're correct thanks, but that's not the cause of the issue. Actually, either in_rgb or in_rgb2 is always empty/None.

      Is there any configuration for ports and such that I need to consider?

      I've got another two IMX477. I can stream three streams simultaneously.

      However, I could not find any configuration to run the IMX582 together with any IMX477. Is there anything I need to consider?

        Hi BenjaminKiefer
        You need to make sure the 582 is connected to the 4 mipi socket (cam_a I think). Other than that I might have to test it locally next week.

        Thanks,
        Jaka

          Unfortunately, that's not it. The 582 is connected to the 4 mipi socket, but it only shows the 477 with the script from above. Note that I can view the 582 if I only stream this one and not the others.

          Should I switch to another branch or such?

          Thanks!

          14 days later

          Sry, did you get a chance to look at it?

          I was also trying to get the IMX462 to work. I used depth-python and imx283. But could not get any stream from it with the FFC3 oak board. No configuration worked (only this camera at any socket).

            Hi BenjaminKiefer
            Got the same result as you did, on 4P revision 7. I raised an issue with the team. Waiting on resolution.

            Thanks,
            Jaka

              Thanks! Does this apply to the IMX462 as well or just to the IMX582? I can open a new thread for the IMX462 for more order.