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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
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    Alex KushleyevA

    @jameskuesel , i have been testing a version of camera server that supports independent zoom / drag on each of the 4 misp channels and also independent EIS modes. This means that you can have one full size unstabilized image and one or more stabilized with EIS and arbitrary zoom and look-at positions for each stream.

    There is also an updated voxl-portal version that has the multi view that supports showing and interactive with multiple streams at the same time.

    If you would like to test it, let me know, i will need to document a bit. Please provide some more information such as what camera you use and what use cases you need, so i can provide an exact camera server config to test (basically specs for each misp channel, - fps, dims, eis/on off and eis mode)

    Alex

  • Commonly asked questions we get from the community

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    施文正施

    Hi Sir,

    How can I get the "Image Sensor Hardware Design and Integration Guide" documents.

    Thanks!

  • Questions by Product

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    Alex KushleyevA

    Hi @qubotics-admin ,

    Between the two tests, i see that one test shows 16V input voltage and the other test ~7.2V. Was the voltage applied to the ESC the same during the tests (and the ESC read it incorrectly) or the voltage was in fact different?

    Such a big difference can have adverse affects on spin-up if the change in voltage is not accounted for in the esc tuning param file.

    It is possible that if the ESC does not have correct parameters for your motor / propeller, the sinusoidal spinup does not have enough power and loses tracking during the spin-up phase and fails to transition to steady-state spin stage.

    The ESC channel 2 on the FPV ESC is the only channel that measures the total board current, so that is why the printout is slightly different when you test the channel 2.

    Please provide the following details that will help us figure out the issue:

    what voltage are you testing the ESC? 16V or 7V? what motor/propeller do you have and which ESC params are you using? does the "bad" ESC channel ever properly spin up, or it never spins up at any battery voltage? is this the first time you are using this motor + propeller + voltage combination with the FPV ESC , or it has been previously working reliably? have you performed any ESC parameter tuning using voxl-esc tools?

    Alex

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

    PCB Design Reviews System Architecture Design Reviews
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    E

    Hi @Alex-Kushleyev,

    Thank you for the detailed explanation regarding the Starling 2 payload margin and the thrust-to-weight considerations. The breakdown is very helpful for my design trade-off.

    I would like to ask one follow-up regarding the Stinger FPV. In my application, flight endurance is not the primary constraint, so the shorter flight time compared with Starling 2 is not necessarily a blocker. Durability, compact size, and the ability to carry a small external sensor package are more important for this specific use case.

    With that in mind, could you please provide a similar payload-oriented assessment for the Stinger FPV?

    Specifically:

    What is the typical all-up weight of a standard Stinger FPV configuration, including battery? What is the approximate maximum thrust per motor? Using the same recommended minimum thrust-to-weight ratio of approximately 2.0 for good controllability, what additional payload margin would you consider practical? Are there recommended mounting areas or structural points on the Stinger frame for small external payloads? Are there any known limitations compared with Starling 2 regarding payload mounting, center-of-mass sensitivity, or PX4 attitude-controller tuning? For an indoor application where flight time is less critical, would you generally consider Stinger FPV a better candidate than Starling 2 for carrying a small external sensor package, or would you still recommend staying with Starling 2?

    At this stage, I am trying to make a platform selection between Starling 2 and Stinger FPV before freezing the mechanical layout. Once I understand which platform has the more suitable payload margin and mounting flexibility, I can share the planned sensor list, estimated added mass, and CAD/mounting concept for your review.

    Thanks again for the support.

    Best regards,
    Eyal