Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
Collapse
Brand Logo

ModalAI Forum

  1. ModalAI Support Forum
  2. VOXL Dev Drones
  3. Sentinel
  4. Question on Sentinel Body Frame Origin

Question on Sentinel Body Frame Origin

Scheduled Pinned Locked Moved Sentinel
3 Posts 2 Posters 488 Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • J Offline
    J Offline
    jmltt
    Regular
    wrote on last edited by
    #1

    I'm trying to set up a mocap system for the source of EV position estimates for the Sentinel. I'm assuming I need to align the rigid body pivot point generated by the mocap system with the origin of the body frame used by the EKF.

    I was wondering if anyone knew what the best way to tie the body frame origin to a physical location on the Sentinel was. I was thinking I should use the EKF2_IMU_POS_X/Y/Z parameters, but I wasn't sure which of the two IMUs that parameter is pointing to.

    Does anyone know which IMU is being referenced by the EKF2_IMU_POS parameters and would that be the best way of identifying the body frame origin w/rt a physical location or is there a better way to accomplish that?

    Thanks

    1 Reply Last reply
    0
    • Chad SweetC Offline
      Chad SweetC Offline
      Chad Sweet
      ModalAI Team
      wrote on last edited by
      #2

      You can see the extrinsics measurements in /etc/modalai/extrinsics.conf

      J 1 Reply Last reply
      0
      • Chad SweetC Chad Sweet

        You can see the extrinsics measurements in /etc/modalai/extrinsics.conf

        J Offline
        J Offline
        jmltt
        Regular
        wrote on last edited by
        #3

        @Chad-Sweet That clears it up, thanks!

        1 Reply Last reply
        0

        Hello! It looks like you're interested in this conversation, but you don't have an account yet.

        Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.

        With your input, this post could be even better 💗

        Register Login
        Reply
        • Reply as topic
        Log in to reply
        • Oldest to Newest
        • Newest to Oldest
        • Most Votes


        ModalAI
        Categories Recent Tags ModalAI.com Docs
        © 2026 ModalAI® · Accelerating autonomy for smaller, smarter, safer drones · Powered by NodeBB
        • Login

        • Don't have an account? Register

        • Login or register to search.
        • First post
          Last post
        0
        • Categories
        • Recent
        • Tags
        • Popular
        • Users
        • Groups