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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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    Eric KatzfeyE

    @owf226 In the log you can see that at 2:52 it takes off. Up until then the motor RPMS are close but not equal. Is that the part you are talking about? After takeoff it is in stabilized mode and so it is trying to level itself and that makes the motor speeds quite a bit different as expected.

  • Commonly asked questions we get from the community

    60
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    281
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    tomT

    @Tutu-Wen

    No, stinger has no GPS Yes Yes, all compute is onboard and the VOXL SDK is open source:https://gitlab.com/voxl-public/voxl-sdk

  • Questions by Product

    2016
    Topics
    10760
    Posts

    N

    @Moderator Many thanks for your reply

    Our goal is to develop a drone capable of indoor/confined-space autonomous flight without GPS, using SLAM-based navigation. The system should perform 3D mapping, obstacle avoidance, and full-area path planning.

    We would like to confirm the correct set of components and the required algorithm stack.

    Planned Algorithm Stack:

    State Estimation: QVIO (Visual-Inertial Odometry) providing position and velocity to PX4/EKF2 via voxl-vision-hub. Mapping: voxl-mapper (TSDF/ESDF) using a depth source. Planning and Avoidance: voxl-mapper’s path planner or PX4 avoidance, using VIO as the pose source. Autopilot: PX4 running on VOXL2 via voxl-px4.

    Proposed Hardware:

    VOXL2 Autopilot – https://www.modalai.com/products/voxl-2?variant=39914779836467 VOXL2 Tracking Camera (Mono Global-Shutter) – required for QVIO (please confirm the correct part number). -- https://www.modalai.com/collections/image-sensors/products/msu-m0149-1 VOXL2 Compatible adapter https://www.modalai.com/products/mdk-m0076-1 VOXL2 Time-of-Flight (ToF) Depth Sensor – https://www.modalai.com/products/m0178?variant=48528287793456 VOXL2 Mini 40-Pin Connector ToF Adapter (MDK-M0172-1-00) – https://www.modalai.com/products/mdk-m0172-1-00

    Questions:

    Please confirm if this set (VOXL2 + Tracking Camera + Camera adapter + ToF sensor + ToF adapter) is sufficient for robust indoor SLAM navigation using PX4. For the tracking camera, which exact ModalAI part number is recommended for QVIO on VOXL2? Are there any best-practice configurations for voxl-mapper when using ToF instead of stereo depth? Would you recommend any additional sensors for improved performance in larger or more complex indoor environments?

    Goal Summary:
    We want the drone to hold position, generate a 3D occupancy map, avoid obstacles, and autonomously plan paths throughout the flyable space—without any GPS input.

    Thank you in advance for your guidance and confirmation.

    Best regards,
    Nitin

  • 434
    Topics
    2064
    Posts

    VinnyV

    Hi @SKA
    Apologies no one responded promptly.
    From what I gather, these are best to be sent back as an RMA and we can try to recover them.

    D1 (green) is an indication of the local 3.3V power being Good. So, that implies you have 3.8V input, and the 3.3V reg is OK.
    DS2 (RGB) is controlled by Qty-3 GPIOs from the SoC. This can briefly blink on boot until the GPIOs are configured by apps software.
    D2 (green) is the 5V USB VBUS USB1 (10-pin) port power indicator, which only comes ON after the QRB5165 boots and Apps controls the GPIO to turn the VBUS ON.

    On failed SW loads, it is common to diagnose that by seeing DS2 or D2 blink, which indicates boot loops. D1 should NEVER go off, if so, something is wrong in HW or cabling.

    We do caution any customer that sets up their own CI or internal validation automation to include a nice pause before repeated power cycles. A common 5 second rule is good to let the large caps discharge, or certain ICs will never fully reset. This is the most common cause of "bricking" devices.

    The RMA is your best bet here and we can try to recover them for you, or diagnose for any other issues: https://www.modalai.com/pages/rma

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

    PCB Design Reviews System Architecture Design Reviews
    11
    Topics
    30
    Posts

    Eric KatzfeyE

    @mkeyno You need to work with the PX4 community on this project, not ModalAI.