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General Questions

2.2k Topics 11.3k Posts

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  • Disconnected from Wi-Fi

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    張為超
    Yes there's a lot of interference there, I will change the Wi-Fi mode to softap and give it a further test see if it happen again. Thanks for your response.
  • "Failed - Network error" when downloading VOXL Emulator 1.7.tgz

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    H
    I am also facing same issue, tried multiple times yet unable to download, please help
  • Are ModalAI PCBs' mounting holes isolated?

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    H
    @Sam-Armstrong awesome!
  • 5G Modem Carrier Board + RM502Q-AE

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    modaltbM
    OK got it. If it's not showing up via lsusb, typically we would solve that by rebuilding our open source public facing kernel with some new USB ids (we even give a docker container that is ready to build the kernel) along with instructions on how to safely test the kernel before flashing it. Check it out here: https://docs.modalai.com/voxl2-kernel-build-guide/ I haven't looked around much, but surely if this DJI drone is a development drone, they should also provide such convenience to their developers, so I'd give DJI a shout and see what's up!
  • This topic is deleted!

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  • error in opkg.conf file

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    Chad SweetC
    VOXL 2 uses apt, and not opkt. Check out the docs here: https://docs.modalai.com/voxl2-platform-release/ You should just need to run apt update apt upgrade
  • Please verify the front of the VOXL Flight is where the camera connectors are

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    R
    And @tom, also thank you.
  • Executing a command line argument at startup

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    R
    Thank you. I could not get video from the uvc device over voxl-streamer, though I could access the test video and the stereo cameras/anything plugged into the MIPI ports. I've had a problem with the newer UVC-server program. I need to check my notes it was a few weeks ago but somehow it wasn't working so I fell back on the ffmpeg due to time limits with the intent of going back to the UVC server application as it's a better solution. I will post a specific issue after looking it over again.
  • Molex antenna placement and potential range

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    R
    We got maybe 1/10 mile in an urban setting, and have had reliability issues. We placed the antennae as far away from power and more than 2.6" from each other on both transmitter and drone. Any recommendations would be helpful. Thank you.
  • Hi res camera for tracking?

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    R
    So it sounds like Dan bought the wrong cameras
  • ESC acting weird.

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    R
    We confirmed that the PWM is cutting off at the same time, so it's possibly an initial velocity difference thing, unless you guys have other thoughts.
  • QGround Control is not detecting my FS-iA6B 6 Channel receiver

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    Deeshant SharmaD
    @modaltb Thank You Sir
  • Info for an interested buyer

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    Chad SweetC
    That is largely dependent on your drone, sensors, and how well they are calibrated and integrated. Our reference drones can map fairly well with stereo image sensors in an outdoor environment, but they are setup with the source code for our customers to modify for their end application. You can check out voxl-mapper source code here. We are frequently updating it and making improvements. A specific metric is tough as there are so many variables.
  • 6-in-1 ESC

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  • VOXL WiFi and Microhard connection Issue

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    Chad SweetC
    This sounds like a Linux networking issue. We don't have any experience doing what you are trying to achieve. VOXL runs Linux though. You'll likely have to set up the Linux networking to handle your usecase. It might be easier to try to get what you are attempting to do working on a Linux desktop and replicate those settings on VOXL
  • How can I get fixed pose via QGC or ROS

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    張為超
    Trying to follow up this question: When I use apriltag to fix pose, Can I get fixed pose topic by using voxl_mpa_to_ros ? Thanks
  • VOXL Hires Camera Blurry/Out of focus

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    R
    Thanks! I just had to manually focus it.
  • Does voxl-tflite-server support Yolov5 model?

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    Nguyen Tien SuN
    Hi @Matt-Turi ! Thank your information!
  • seeker SLAM question

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    Steve TurnerS
    Dan, Check out this thread: https://forum.modalai.com/topic/589/flying-in-poorly-lit-conditions?_=1654205018092 TLDR is you need enough features for QVIO to pick points out for VIO. So you either need a diffuse light source that can illuminate features or some other low-light sensor that you would need to integrate with QVIO.
  • How to install and configure OpenVPN?

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    tomT
    @Djalma-Ribeiro You can create a systemd service file and enable it to run on boot and have it execute the OpenVPN connection command. Here is an example on how we have used it in the past on a VOXL: [Unit] After=voxl-time-sync.service Requires=voxl-time-sync.service [Service] Type=forking ExecStartPre=/bin/sleep 2 ExecStart=/usr/sbin/openvpn --script-security 2 --daemon --config /etc/openvpn/KEY_FILE [Install] WantedBy=default.target Won't be exactly the same as above but that's the general idea.