• Hardware

  • Oak-4D initial power through PoE module red light

Hi,

My hardware is shown in the screenshot. It's the Oak 4D-AF + PoE(+ injector) module. Plugging this module into the main power supply only and then the Oak 4D yields only a series of red flashing light. From the instructions this indicates a potential power incompatibility. Given the unit I'm using for power is the PoE + injector that is rated for the 30W, and I've tried multiple different outlets just in case; is there anything further I can test or is there an indication as to why the power incompatibility might be?

    5 days later

    Hi @Floris
    Apologies for late reply. As long as your POE injector is 802.3at, you can safely ignore the red light. I will assume the injector you are using is not passive, so it is rather strange you are getting the low power warning. Let me check with the team.

    Thanks,
    Jaka

    Floris
    The injector is in fact passive so the red light is expected. You can safely ignore it.

    Thanks,
    Jaka

      9 days later

      Hey Jaka,

      No worries on the response time, and apologies on that front from me too. Understood on the injector being passive. That's good to know. I am however still facing issues with the initial registration of the Oak 4 D unit. After the red ring flashes for a few times it stops and fades, after which no lights are burning. From what I've read should it not continue to a blue light despite the initial red light if there is enough power? Further, I've tried using oakctl to discover the camera. My setup at the moment has one of the ethernet cables from the PoE+ injectors to the camera and another ethernet cable from the injector to my desktop computer running windows. I have Oakctl installed and operational but when running $oakctl setup - or connect there's no ability to connect to the camera or discover it.

      Would you have any advice on continued troubleshooting/setup?

        Floris
        I'm thinking it has to be power still.
        Do you have a power brick with PD that can supply 30W? Try using that to power the device. LED should be blue after the bootup sequence is complete.

        Thanks
        Jaka

          Hey Jaka,

          I do have a powerbrick with PD that can supply 30W. However the LED light does the same thing. Flashes red multiple times and then turns off. If it's of use I'd be happy to attach further pics or videos?

          Hey @Floris
          Could you try to discover your device using USB, via the command adb devices.

          If you find the device via adb devices, then please run:
          adb shell cat /etc/os-release

          If that doesn't work, could you tell us if there are any link lights blinking on the port of your ethernet switch to which the OAK4-D is connected?
          Thanks!
          Filip

          Hey Filip,

          I am also not able to discover the device via USB-C using the command adb devices

          There are no link lights blinking on the port of my ethernet switch when plugged in either.

          To ensure I provide as much detail as possible on this -> I have my Oak4D connected to my PoE+ Injector for the power, with another ethernet cable running from the PoE injector to my router. From this I'm still unable to discover the device on my network. This returns "List of devices attached" but this list is empty.

          One thing I've not tried is ensuring that the device is plugged into my ethernet switch, power and connected via USB to my device

          Hey @Floris ,
          Thanks for trying via adb devices.

          Could you try plugging out all cables and then plugging in only the 30W USB-C PD powerbrick, followed by plugging the ETH cable directly into your non PoE switch (bypassing the PoE injector).

          I would like to make sure that the PoE is bypassed completely in case there is any issue with the device or the injector.
          Thanks for your patience,
          Filip

          8 days later

          Hey Filip,

          I've tried this and the results are still the same. My 30W USB-C PD powerbrick is plugged in, and the ETH cable is plugged directly into the router and the list of ADB devices is still empty.

          13 days later

          Hey Filip,

          Is there anything else I can try to make this work? Or any possible next step you'd suggest?

            5 days later

            Floris
            Apologies for the late reply. We are looking into it. If no solution is found, we can RMA.

            Thanks for your patience.
            Jaka

              Hey @Floris
              Could you send a video of your setup and any lights coming from the device after it's powered by the 30W USB-C PD supply?
              Apologies for the late reply and thanks for your patience,
              Filip

              Hey Filip,

              I've attached 2 videos of the various setups that we've discussed before. I have a third for the setup of using the POE but am having some issues compressing this to a size I can upload. However I figured the below two videos should already be of use

              usb-c-no-other-connection.mp4
              4MB
              usb-crouter-connection.mp4
              6MB

                Floris
                One thing not visible on the video - after the light turns off after blinking red - if you wait about 20s, nothing happens? I'm guessing it's the cable that is causing issues - can you try a different one (C-C) that supports 30+ watts?

                Thanks,
                Jaka

                  Indeed after the light turns off, 20 seconds later nothing happens and I am unable to list the device through ADB devices. I run into the same issues when I use the PoE injector + ethernet cable. I will find a different USB-C cable to try, however this cable has no issues on any of my other devices. That being said, i realise how tech can be so I will update this thread with a video of a different usb-c cable + 20 seconds of extra footage to showcase whether anything happens

                  Hey Jaka,

                  This is a video with a different USB-C to USB-cable attempt. I've also shot the video longer to show nothing happens after 20 seconds of being plugged in and off camera I did an "ADB devices" check and found nothing on the network. Does this showcase anything further? I would really love to get the camera to startup properly and am not quite sure what else to try in that regard

                  new-usb-c-cable-attempt.mp4
                  9MB

                  Hey Jaka,

                  Would it be possible for someone to take a look at my above comment? I'm really hoping to get this functional in the near future.

                    Thank you very much Jaka. I've filled out the form. And also thank you very much for all the support over this issue that you and your team have provided