Skip to content
VOXL® Developer Community

Build smaller, smarter, safer drones.

Ask the ModalAI engineering team, search thousands of solved threads, and share what you're flying — direct from the people who build VOXL.

3324Members
5199Topics
26288Posts
Browse

Categories

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

    2k 12k
    2k Topics
    12k Posts
    Alex KushleyevA
    hi @nostrain , Thank you for providing an important detail regarding unloaded motor. I am going to test that condition with a similar motor. I am a bit hesitant to ask you to go back to the older firmware since we have had a number of improvements since the original firmware, so we will try to figure out how to make this work. In general, the ESC with unloaded motor should not be doing this, even while running in RPM control mode (which has been tuned for optimal response with a propeller). Ideally, the unloaded performance should not fail (while would behave differently from loaded motor). Meanwhile, i am not sure how much value it is to do RPM step response tests with unloaded motor, because RPM controller assumes a loaded motor and the RPM controller is using the tuning parameters you provided. However, the motor behavior is extremely different without the propeller. To test realistic conditions, we typically run robustness tests like this with propeller on. One more request, are you able to repeat the same test with the original firmware (that currently works) and set the demag_timing ESC parameter to 0. This was a feature originally put in for testing to help with low kv motors, but we later decided that this feature was not complete / robust enough to cover general use cases and it was removed. I am curious if it is helping in this case. Alex
  • Commonly asked questions we get from the community

    71 301
    71 Topics
    301 Posts
    J
    Hello. Can a Starling 2 drone autonomously fly while flying over the pipe inside a sewer? The drone must fly autonomously in a dark place to inspect cracks or internal conditions while flying along the water pipe. I'm not sure if this feature can run on Starling, so I'm asking for help!
  • Questions by Product

    Product related questions and answers

    2k 12k
    2k Topics
    12k Posts
    Eric KatzfeyE
    Could you post a log of the drone flip?
  • 508 Topics
    2k Posts
    zauberflote1Z
    Please update your VINS to our master branch here: https://gitlab.com/voxl-public/voxl-sdk/services/voxl-open-vins-server
  • Please request review from ModalAI before building your drone or custom add-on PCB

    18 48
    18 Topics
    48 Posts
    S
    Hi ModalAI team, We are planning a 7-port USB 2.0 hub for VOXL 2, connected through J3, using the Microchip USB2517. We wanted to use this to connect more sensors and USB cameras to the VOXL 2 board. I’m following the USB expansion guidance in the VOXL 2 Expansion Design Guide and wanted to ask: Do you have a reference schematic for a USB 2.0 hub connected to J3 that you could share? The guide mentions that ModalAI may review customer expansion-board designs. Once I have my schematic ready, would you be willing to review it before I proceed to PCB layout? Thank you in advance!