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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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  The setup that I am currently using involves a Voxl2 Mini and the Voxl ESC mini 4 in 1. The ESC is calibrated, and when all motors are spun using voxl-esc tools, the RPM values are accurate across all thrusters. This is also true when the motor test is performed in QGC, the reported RPM is equal across all thrusters.

  The issue occurs when trying to fly the drone. When armed, not all of the motors spin at the same speed. Using the RC controller to arm the drone, and putting all control inputs to zero causes vibration issues as some of the motors spin significantly slower than the rest. I re-calibrated the sensors in QGC several times, and this did not resolve the issue. I have attached a brief log which shows the issue, and would appreciate any suggestions about how to fix it. Given that the motors work correctly when tested outside of PX4, I am leaning towards it being a configuration issue with that.

  https://review.px4.io/plot_app?log=6b99b5ad-9cfd-4a7c-b76f-2e6ea2a20393

• FAQs

  Commonly asked questions we get from the community

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  @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

  Product related questions and answers

  FPV Drones VOXL Accessories VOXL Compute & Autopilot VOXL Dev Kits VOXL Dev Drones ESCs
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  I would like to add a WASP-200 UART device to the starling 2 max running arducopter (also interested if it could work on PX4). can i use the VOXL 2 IO board's UART output to connect it to an a serial device? if so, what would the UART number be within arducopter?

• Software Development

  Questions about developing software on the products

  VOXL SDK Video and Image Sensors GPS-denied Navigation (VIO) Modal Pipe Architecture (MPA) AprilTag Relocalization ROS Mapping and Planning Remote ID
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  A

  @mkriesel , our M0153 / M0201 adapter does have an option to connect Boson to the common sync line that is used for synchronizing AR0144 tracking cameras (GPIO 109). This line is typically driven at 30Hz, but the frequency is adjustable.

  There is a resistor pad on M0153 / M0201 adapter which is DNI by default, so a 0-ohm resistor would need to be installed to enable this functionality. However, we have not verified that it works.

  It is on our to-do list to verify the Boson sync. Once we confirm that it works, I can provide instructions for installing the resistor if you wanted to enable that functionality. Boson's configuration will also need to be updated to enable the sync input, but it's not a big change.

  Let me get back to you next week..

  Alex

• Design Reviews

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