After I run a script that uses the Oak-D PoE, the next time I run another script, it always gives me the "No available devices" error. This error goes away only after I've unplugged the ethernet cables from my computer/PoE injector/Oak-D and plug them back in at least once/multiple times. Could anyone give me a clue on what's going on?

I am using an Oak-D Pro PoE <--> TP-Link PoE injector <--> my laptop, all connected via ethernet cable. I am running the scripts on PyCharm. Thank you!

I've never used a PoE injector before, but I have run into similar issues. I've found that sometimes I need to wait a bit after running a script for the camera to stop running it. How long are you waiting before running another script?

Some code could be helpful too. Are you using the script node?

    Penguinmon Hi, this issue occurs with every script I run. I am running the example SDK/API scripts in depthai-sdk, depthai-python, and depthai-experiements libraries, in addition to the own scripts I have coded.

    Penguinmon Are you using the script node?
    What is the script node?

    Thanks!
    Jae

      Hi @jsiic
      and thanks @Penguinmon
      Typically, a POE device will take some time (10s) to restart after closing the connection to the host. If you are trying to reconnect during that time, you will get the no device found error.
      If the device is unavailable even after those initial 10s, this could mean there is something wrong with how your laptop is communicating through the ETH adapter.
      Could be that when the POE device looses connection, the laptop's adapter changes the subnet back to it's default state (eg. not 169.254.x.x which the device is using). Therefore, even when the device reconnects, the host is unable to see it.
      You could try manually specifying the IP of the device in dai.Device() or connecting to a router (DHCP server) to gain more insight.

      Thanks,
      Jaka

      2 months later

      Hi @jsiic
      Do you still have the same problem or did you find a solution?
      I'm running into the same issue. If I kill the pipeline code, the camera seems to end up in an endless loop.
      My configuration is as follows, the camera is connected to a dedicated PoE output of a reComputer Industrial J4011 port. The port is configured on link local mode. The STROBE ISO signal is constantly pulled up to 24VDC, and signals are given to the FSYNC input.
      As far as I know, after the pipeline is killed, the device doesn't come back to it's idle state. There is still a link between the host and the camera. But a ping or port scan to the camera doesn't show any response.

      The only solution is to manually unplug the device and plug it in again. Which is really annoying. This problem occurred various times while I was/am working with the camera.

        Hi @fredrik
        What is the IP of the device? Is it the fallback (169.254...) or do you have a DHCP server running on the reComputer?

        Thanks,
        Jaka

        Hi @jakaskerl ,

        The Ethernet port is configured in link local mode within the OS (Ubuntu distro). Therefore, the camera is on the fallback IP: 169.254.1.222. The host (reComputer) is on 169.254.48.244/16. This configuration works, without thinking about this issue, really nice.

          Hi fredrik

          fredrik This problem occurred various times while I was/am working with the camera.

          So it doesn't occur every time? That would mean it's likely not a HW issue. But basically, the issue occurs only when you are pulling the STROBE ISO to 24V? How frequent are these issues?

          Also I feel like this thread describes a different issue than the one you are experiencing.

          Thanks,
          Jaka

            jakaskerl

            Hi @jakaskerl ,

            No, but when I kill the process that runs the pipeline it occurs frequently. I don't know if it really has to do with the STROBE ISO or FSYNC INPUT, I didn't test this. But I provide you as much as possible details so you have an idea how to reproduce this.

            I'm concerned that the camera doesn't restart in idle mode in some circumstances. That's a huge concern because manually restarting the cam during the production process is difficult.

            @jsiic is using PyCharm, since PyCharm can kill running run/debug processes it could be the case that there is the same cause for those issues. But I can put this in another thread if you want.

            Hope to hear from you.

            Best wishes, Fredrik

              jakaskerl @fredrik

              I have experimented with two different Oak D Pro PoE's and have found that this issue is only persistent with one of my devices, which makes me think that it is a faulty device.

              I connected both of them to a switch and a router to assign them ip and mac addresses. For one of the Oak-D's, I was able to consecutively reopen a script (up to 10 times) and continuously ping it without any issue. As for the faulty Oak-D, it is unable to run the script more than once consecutively, and cannot be pinged after closing the script. I have run each device on both of the cables, and the results are the same. I am using the same script and same setup for both Oak-D's.

                fredrik No, but when I kill the process that runs the pipeline it occurs frequently.

                How do you kill the process? Like a SIGTERM with the python process ID or some other way. Looking to repro this, but am having issues.

                jsiic I am using the same script and same setup for both Oak-D's.

                What about revision numbers? Are they different?

                Thanks,
                Jaka

                  jakaskerl I am running the exact same script, so the revision numbers are the same. Or are you referring to something regarding the Oak-D hardware?

                    jsiic
                    I'm talking about the PCB revision. You can check the number on the PCB.

                    Thanks,
                    Jaka

                    a month later

                    Hello @jakaskerl ,

                    I'm facing same problem.
                    I have 3 sets of OAK-D Pro W PoE and only one of them having the same issue while the others work fine for many times.
                    Below is what I've done.

                    ✔ updated bootloader to 0.0.27
                    ✔ using latest depthai 2.25.1.0
                    ✔ tried both of static and dynamic ip address config

                    I found that board rev of the fail camera is "R4M2E3", and the others' is "R4M2E4".
                    Is there any chances that failure is caused by the difference of board rev?

                    I attach 3 eeprom json dumps for information.

                    • Mxid:1844301011399D0F00 (fail camera)

                        {
                            "batchName": "",
                            "batchTime": 1676710223,
                            "boardConf": "IR-C00M00-00",
                            "boardCustom": "",
                            "boardName": "NG9097",
                            "boardOptions": 3,
                            "boardRev": "R4M2E3",
                            "cameraData": [
                                [
                                    2,
                                    {
                                        "cameraType": 0,
                                        "distortionCoeff": [
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                                            0.8226749897003174,
                                            -0.0004995953058823943,
                                            0.0004501539224293083,
                                            0.005537083838135004,
                                            3.8670060634613037,
                                            1.8429312705993652,
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                                        "extrinsics": {
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                                                ],
                                                [
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                                            ],
                                            "specTranslation": {
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                                                "y": 0.0,
                                                "z": 0.0
                                            },
                                            "toCameraSocket": 0,
                                            "translation": {
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                                        "height": 800,
                                        "intrinsicMatrix": [
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                                        "lensPosition": 0,
                                        "specHfovDeg": 127.0,
                                        "width": 1280
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                                ],
                                [
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                                        "cameraType": 0,
                                        "distortionCoeff": [
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                                            "specTranslation": {
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                                            "toCameraSocket": 2,
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                                        "height": 800,
                                        "intrinsicMatrix": [
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                                        ],
                                        "lensPosition": 0,
                                        "specHfovDeg": 127.0,
                                        "width": 1280
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                                ],
                                [
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                                    {
                                        "cameraType": 0,
                                        "distortionCoeff": [
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                                        "extrinsics": {
                                            "rotationMatrix": [
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                                            ],
                                            "specTranslation": {
                                                "x": -0.0,
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                                                "z": -0.0
                                            },
                                            "toCameraSocket": -1,
                                            "translation": {
                                                "x": 0.0,
                                                "y": 0.0,
                                                "z": 0.0
                                            }
                                        },
                                        "height": 2160,
                                        "intrinsicMatrix": [
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                                        ],
                                        "lensPosition": 0,
                                        "specHfovDeg": 108.0,
                                        "width": 3840
                                    }
                                ]
                            ],
                            "deviceName": "",
                            "hardwareConf": "F1-FV01-BC001",
                            "housingExtrinsics": {
                                "rotationMatrix": [],
                                "specTranslation": {
                                    "x": 0.0,
                                    "y": 0.0,
                                    "z": 0.0
                                },
                                "toCameraSocket": -1,
                                "translation": {
                                    "x": 0.0,
                                    "y": 0.0,
                                    "z": 0.0
                                }
                            },
                            "imuExtrinsics": {
                                "rotationMatrix": [
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                                    [
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                                ],
                                "specTranslation": {
                                    "x": 0.0,
                                    "y": 0.0,
                                    "z": 0.0
                                },
                                "toCameraSocket": -1,
                                "translation": {
                                    "x": 0.0,
                                    "y": 0.0,
                                    "z": 0.0
                                }
                            },
                            "miscellaneousData": [],
                            "productName": "OAK-D-PRO-W-POE",
                            "stereoEnableDistortionCorrection": false,
                            "stereoRectificationData": {
                                "leftCameraSocket": 1,
                                "rectifiedRotationLeft": [
                                    [
                                        0.999943733215332,
                                        0.010547235608100891,
                                        -0.0011248956434428692
                                    ],
                                    [
                                        -0.010545255616307259,
                                        0.9999428391456604,
                                        0.001751492964103818
                                    ],
                                    [
                                        0.0011433048639446497,
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                                        0.9999978542327881
                                    ]
                                ],
                                "rectifiedRotationRight": [
                                    [
                                        0.999934732913971,
                                        -0.010913403704762459,
                                        0.0033808210864663124
                                    ],
                                    [
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                                        -0.0017271068645641208
                                    ],
                                    [
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                                        0.0017639102879911661,
                                        0.9999927878379822
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                                ],
                                "rightCameraSocket": 2
                            },
                            "stereoUseSpecTranslation": true,
                            "version": 7,
                            "verticalCameraSocket": -1
                        }
                    • Mxid:18443010E15E960F00 (working fine)

                        {
                            "batchName": "",
                            "batchTime": 1681371289,
                            "boardConf": "IR-C00M00-00",
                            "boardCustom": "",
                            "boardName": "NG9097",
                            "boardOptions": 7,
                            "boardRev": "R4M2E4",
                            "cameraData": [
                                [
                                    2,
                                    {
                                        "cameraType": 0,
                                        "distortionCoeff": [
                                            2.2474868297576904,
                                            0.6692854762077332,
                                            0.00046299261157400906,
                                            -9.837499965215102e-05,
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                                        "extrinsics": {
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                                                [
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                                                [
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                                            ],
                                            "specTranslation": {
                                                "x": 3.75,
                                                "y": 0.0,
                                                "z": 0.0
                                            },
                                            "toCameraSocket": 0,
                                            "translation": {
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                                                "y": 0.0015009926864877343,
                                                "z": -0.016050558537244797
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                                        },
                                        "height": 800,
                                        "intrinsicMatrix": [
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                                        "lensPosition": 0,
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                                        "width": 1280
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                                ],
                                [
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                                        "distortionCoeff": [
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                                        "extrinsics": {
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                                            "toCameraSocket": 2,
                                            "translation": {
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                                            "toCameraSocket": -1,
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                                        },
                                        "height": 2160,
                                        "intrinsicMatrix": [
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                                        ],
                                        "lensPosition": 0,
                                        "specHfovDeg": 108.0,
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                                ]
                            ],
                            "deviceName": "",
                            "hardwareConf": "F1-FV01-BC001",
                            "housingExtrinsics": {
                                "rotationMatrix": [],
                                "specTranslation": {
                                    "x": 0.0,
                                    "y": 0.0,
                                    "z": 0.0
                                },
                                "toCameraSocket": -1,
                                "translation": {
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                            "imuExtrinsics": {
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                                "toCameraSocket": -1,
                                "translation": {
                                    "x": 0.0,
                                    "y": 0.0,
                                    "z": 0.0
                                }
                            },
                            "miscellaneousData": [],
                            "productName": "OAK-D-PRO-W-POE",
                            "stereoEnableDistortionCorrection": false,
                            "stereoRectificationData": {
                                "leftCameraSocket": 1,
                                "rectifiedRotationLeft": [
                                    [
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                                        0.021793076768517494
                                    ],
                                    [
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                                    [
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                                ],
                                "rectifiedRotationRight": [
                                    [
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                                        0.00571703165769577,
                                        0.022953413426876068
                                    ],
                                    [
                                        -0.005669059231877327,
                                        0.9999815821647644,
                                        -0.0021544997580349445
                                    ],
                                    [
                                        -0.022965308278799057,
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                                        0.9997342228889465
                                    ]
                                ],
                                "rightCameraSocket": 2
                            },
                            "stereoUseSpecTranslation": true,
                            "version": 7,
                            "verticalCameraSocket": -1
                        }
                    • Mxid:18443010419A8E0E00 (working fine)

                        {
                            "batchName": "",
                            "batchTime": 1681373872,
                            "boardConf": "IR-C00M00-00",
                            "boardCustom": "",
                            "boardName": "NG9097",
                            "boardOptions": 7,
                            "boardRev": "R4M2E4",
                            "cameraData": [
                                [
                                    2,
                                    {
                                        "cameraType": 0,
                                        "distortionCoeff": [
                                            1.1420116424560547,
                                            -0.12159973382949829,
                                            0.00016930163837969303,
                                            1.48746103150188e-05,
                                            -0.022195111960172653,
                                            1.4924085140228271,
                                            0.13922181725502014,
                                            -0.08151122182607651,
                                            0.0,
                                            0.0,
                                            0.0,
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                                        "extrinsics": {
                                            "rotationMatrix": [
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                                                ],
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                                                    0.004074529279023409,
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                                            "specTranslation": {
                                                "x": 3.75,
                                                "y": 0.0,
                                                "z": 0.0
                                            },
                                            "toCameraSocket": 0,
                                            "translation": {
                                                "x": 3.7847630977630615,
                                                "y": -0.0011661133030429482,
                                                "z": -0.10201772302389145
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                                        },
                                        "height": 800,
                                        "intrinsicMatrix": [
                                            [
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                                        ],
                                        "lensPosition": 0,
                                        "specHfovDeg": 127.0,
                                        "width": 1280
                                    }
                                ],
                                [
                                    1,
                                    {
                                        "cameraType": 0,
                                        "distortionCoeff": [
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                                            0.0,
                                            0.0,
                                            0.0,
                                            0.0,
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                                        ],
                                        "extrinsics": {
                                            "rotationMatrix": [
                                                [
                                                    0.9999582171440125,
                                                    -0.0007228651084005833,
                                                    -0.009114222601056099
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                                                [
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                                                [
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                                                    -0.005659212823957205,
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                                            ],
                                            "specTranslation": {
                                                "x": -7.5,
                                                "y": 0.0,
                                                "z": 0.0
                                            },
                                            "toCameraSocket": 2,
                                            "translation": {
                                                "x": -7.4916276931762695,
                                                "y": -0.048582371324300766,
                                                "z": 0.004791563376784325
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                                        },
                                        "height": 800,
                                        "intrinsicMatrix": [
                                            [
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                                            [
                                                0.0,
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                                        ],
                                        "lensPosition": 0,
                                        "specHfovDeg": 127.0,
                                        "width": 1280
                                    }
                                ],
                                [
                                    0,
                                    {
                                        "cameraType": 0,
                                        "distortionCoeff": [
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                                            0.0,
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                                        ],
                                        "extrinsics": {
                                            "rotationMatrix": [
                                                [
                                                    0.0,
                                                    0.0,
                                                    0.0
                                                ],
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                                                    0.0,
                                                    0.0,
                                                    0.0
                                                ],
                                                [
                                                    0.0,
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                                            ],
                                            "specTranslation": {
                                                "x": -0.0,
                                                "y": -0.0,
                                                "z": -0.0
                                            },
                                            "toCameraSocket": -1,
                                            "translation": {
                                                "x": 0.0,
                                                "y": 0.0,
                                                "z": 0.0
                                            }
                                        },
                                        "height": 2160,
                                        "intrinsicMatrix": [
                                            [
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                                        ],
                                        "lensPosition": 0,
                                        "specHfovDeg": 108.0,
                                        "width": 3840
                                    }
                                ]
                            ],
                            "deviceName": "",
                            "hardwareConf": "F1-FV01-BC001",
                            "housingExtrinsics": {
                                "rotationMatrix": [],
                                "specTranslation": {
                                    "x": 0.0,
                                    "y": 0.0,
                                    "z": 0.0
                                },
                                "toCameraSocket": -1,
                                "translation": {
                                    "x": 0.0,
                                    "y": 0.0,
                                    "z": 0.0
                                }
                            },
                            "imuExtrinsics": {
                                "rotationMatrix": [
                                    [
                                        0.0,
                                        0.0,
                                        0.0
                                    ],
                                    [
                                        0.0,
                                        0.0,
                                        0.0
                                    ],
                                    [
                                        0.0,
                                        0.0,
                                        0.0
                                    ]
                                ],
                                "specTranslation": {
                                    "x": 0.0,
                                    "y": 0.0,
                                    "z": 0.0
                                },
                                "toCameraSocket": -1,
                                "translation": {
                                    "x": 0.0,
                                    "y": 0.0,
                                    "z": 0.0
                                }
                            },
                            "miscellaneousData": [],
                            "productName": "OAK-D-PRO-W-POE",
                            "stereoEnableDistortionCorrection": false,
                            "stereoRectificationData": {
                                "leftCameraSocket": 1,
                                "rectifiedRotationLeft": [
                                    [
                                        0.9999361634254456,
                                        0.005765415262430906,
                                        -0.009716913104057312
                                    ],
                                    [
                                        -0.005737767554819584,
                                        0.9999794363975525,
                                        0.0028707573655992746
                                    ],
                                    [
                                        0.009733264334499836,
                                        -0.002814820734784007,
                                        0.9999486804008484
                                    ]
                                ],
                                "rectifiedRotationRight": [
                                    [
                                        0.99997878074646,
                                        0.006484751123934984,
                                        -0.0006395755335688591
                                    ],
                                    [
                                        -0.006486542988568544,
                                        0.9999749064445496,
                                        -0.0028407752979546785
                                    ],
                                    [
                                        0.000621137791313231,
                                        0.002844863571226597,
                                        0.999995768070221
                                    ]
                                ],
                                "rightCameraSocket": 2
                            },
                            "stereoUseSpecTranslation": true,
                            "version": 7,
                            "verticalCameraSocket": -1
                        }

                    Could you help me to find solution?

                    Thank you.

                    Hi @Yosuke
                    How did you get the calibration if you can't connect to the device?

                    Could be that the calibration file is causing this issue.

                    1. Try loading the working config to the non-working camera. Script.

                    2. Have you tried reflashing the bootloader and selecting NETWORK mode?

                    Thanks,
                    Jaka

                    Hi @jakaskerl , I really appreciate your prompt reply.

                    My camera has the same symptons as jsiic's; the camera doesn't respond anymore after using it few times, and it continues until reconnecting LAN cable.

                    I coud get eeprom dumps before being hunged it up because it surely works after reconnection.

                    Thank you for proposal, I'll report if it works.

                    Best wishes,
                    Yosuke