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  • Note sure where to post? Ask questions here for direct access to the ModalAI engineering team

    Support Request Format for Best Results Feature Requests 3D Models
    2011
    Topics
    10155
    Posts

    T

    Hello Modal AI team,

    I am trying to enable and run voxl-io-server. I was successfully able to enable it but when starting the system, it would not run. I ran into this error when I asked for its status

    voxl2:/$ systemctl status voxl-io-server
    ● voxl-io-server.service - voxl-io-server
    Loaded: loaded (/usr/bin/voxl-io-server; enabled; vendor preset: enabled)
    Active: failed (Result: exit-code) since Mon 2025-07-14 14:19:26 UTC; 25ms ago
    Process: 2571 ExecStart=/usr/bin/voxl-io-server (code=exited, status=255)
    Main PID: 2571 (code=exited, status=255)

    Jul 14 14:19:26 m0054 systemd[1]: Started voxl-io-server.
    Jul 14 14:19:26 m0054 voxl-io-server[2571]: no config file found, please run voxl-configure-rangefinders
    Jul 14 14:19:26 m0054 systemd[1]: voxl-io-server.service: Main process exited, code=exited, status=255/n/a
    Jul 14 14:19:26 m0054 systemd[1]: voxl-io-server.service: Failed with result 'exit-code'.

  • Commonly asked questions we get from the community

    59
    Topics
    277
    Posts

    Jing YuJ

    I am currently setting up a TOF sensor on my Straling 2 Max drone and have followed the configuration steps provided in your official documentation. I am using the VOXL Web UI to monitor the sensor data.

    The TOF sensor appears to be recognized by the system — in the Web UI, I can see the TOF IR (infrared) stream, indicating that the sensor is connected and active. However, I do not see any output for the TOF Depth or Confidence (conf) data — the corresponding image feeds are blank or not updating.
    Here is the output of voxl-camera-server -l, which shows that the system detects 5 cameras, including the TOF sensor:
    1.png
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    5.png

  • Questions by Product

    1928
    Topics
    10338
    Posts

    Jing YuJ

    I am currently setting up a TOF sensor on my Straling 2 Max drone and have followed the configuration steps provided in your official documentation. I am using the VOXL Web UI to monitor the sensor data.

    The TOF sensor appears to be recognized by the system — in the Web UI, I can see the TOF IR (infrared) stream, indicating that the sensor is connected and active. However, I do not see any output for the TOF Depth or Confidence (conf) data — the corresponding image feeds are blank or not updating.
    Here is the output of voxl-camera-server -l, which shows that the system detects 5 cameras, including the TOF sensor:
    1.png
    2.png
    3.png
    4.png
    5.png

  • 398
    Topics
    1894
    Posts

    Ege YüceelE

    Hi ModalAI team. I’ve been successfully using voxl-tflite-server to run custom neural networks that take image input from the mpa/hires camera. Now, I’d like to expand to more general neural networks that also incorporate other forms of input. For example, prior waypoint information stored in memory or additional sensory data (e.g., IMU, rangefinders, or temporal data from previous frames).

    What would be the recommended roadmap to support this?

    Specifically:

    How should I modify or extend the current model helper pipeline to feed both image and non-image inputs?

    Is there support in voxl-tflite-server for multiple input tensors (e.g., combining a camera frame other forms of information)?

  • Please request review from ModalAI before building your drone or custom add-on PCB

    PCB Design Reviews System Architecture Design Reviews
    7
    Topics
    22
    Posts

    VinnyV

    Hi @Alex-Kushleyev , @QSL 170-250mm is quite long. I'm not optimistic 250mm can even work, 170 would be risky.
    We can offer our design services, but typically what that results in is a MOQ of a specific new item, such as 300-500pcs depending on the complexity (at normal MRSP which for flexes runs ~$50-80 each) and lead times would be ~14-18 weeks.
    What we would need is a .dxf outline of your intended design and we can review that for feasibility and interest. If it really is 250mm, I'd prefer to no-bid it. 200mm might be the edge here (we do not have sophisticated Sigrity tools to confirm, so going on experience here).
    M0170 is not ideally suited for back-to-back (the connectors are a bit offset from each other so the net result would be weird) but it may prove if 140mm can work + ~10 mm for the connector transition losses.
    In situations like this, I encourage the ME/Industrial Design Team to reconsider placement of sensors and main electronics relative to each other. There are just some constraints the electronics cannot meet easily. Sometimes just simply re-prioritizing the system constraints helps solve the spatial/distance problems. To extend past ~180+mm, I would encourage you use an external design firm that knows how to do mipi repeaters and high speed design. We've had one customer successfully do that, but it takes some skill and we could do it ourselves, but we just do not have the design cycles to support it this calendar year.
    Hope this helps and let us know what your thoughts are, and if pursuing us for a custom design is an option, we can reach out over email.