VOXL

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  How To Set VIO Position Offset?
  • John Nomikos  

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  Have you looked at the video tutorial here? https://docs.modalai.com/configure-extrinsics/
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  Mavproxy OK when Vision is not needed?
  • tangotoo  

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  @Alex-Gardner that did it! We definitely need to update the docs. I was going over all the Voxl Vision docs I could find and I don't recall seeing anything about voxl-mavlink-server. A flowchart might be nice, I ran into a similar issue with Voxl Camera Streamer and the camera server service, but I figured that one out thanks to the docs.
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  voxl-modem version 0.15.1 does not change eth0 inet address (voxl_platform_3.8.0-0.7)
  • John Nomikos  

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  added note here: https://docs.modalai.com/microhard-add-on-manual/
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  USB2.0 to Ethernet
  • Rowin Leemeijer  

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  @Rowin-Leemeijer In our documentation (https://docs.modalai.com/usb-to-ethernet-with-voxl/) we recommend this one: https://www.amazon.com/Apple-MC704LL-A-Ethernet-Adapter/dp/B00W7W9FK0/ref=sr_1_3?keywords=usb+to+ethernet+apple&qid=1575492214&s=electronics&sr=1-3
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  mpa to ros voxl-tag detector
  • Mostafa Nikpour  

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  Hi, I'm also interested in accessing this data, I noticed the voxl-inspect-tags code manages to access it but I'm not sure what is the proper approach to send it through MAVROS/Mavlink to an external flight controller. I tried the following things: adding the libraries from voxl-inspect-tags that open the pipe associated with tags to a CMakeLists file in a ROS package, though it doesn't compile with an error message stating they're incompatible when running catkin_make reading the "/tracking" ROS msg from within the kinetic docker and then: (1) use a standard ROS package for AprilTag detection, doesn't work as it requires catkin build which fails. (2) catkin_make a ROS package for AprilTag detection, but I didn't have any luck with compiling OpenCV in the docker. My ultimate goal would be to send this data to PX4 via UART for precision landing but so far I'm a bit lost and would truly appreciate an opinion on this. Would it be simpler to copy the process from voxl-inspect-tags and use mavlink directly to send it to the separate flight controller? If so how would one add mavlink messaging capabilities to the .c code? Or am I way off?
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  RC receiver 5VDC supply port other than J9 in flight core
  • Anubhav  

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  Hi @Anubhav , That's very odd that J8 is not working. It's a hard short to the 5V power subsystem that feeds the board. There is no limitation I can see that would prevent that. I know for Spektrum based receivers, there is a specific 3.3V power sequence and bit-wiggling that occurs for binding (through Flight Core J12), so I'm not sure if your receiver is expecting something similar and does not like the "always on" 5V on M0018 J8 and J9. The 4G LTE modem M0030 ports J5 and J6 are safe to use. They expose a 500mA limited 5V to those pins. They are USB2 ports @500ma, with USB HS data on pins 2/3, and DGND on Pin 4. They are turned on sometime after power-on once the hub enumerates with Voxl, so I wonder if that delay ON time is what is helping your receiver bind and communicate properly. You might be venturing into a Software domain which I am not an expert in, so if just knowing that J5 and J6 are "safe" and this works for you, then great! If not, we may need to pull in some SW folks to dig deeper. Thanks! Vinny
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  VOXL flight deck not connecting to QGC
  • manan gupta  

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  Hi, After inspecting services, this was the output. I can see the mavlink server is neither enabled nor running. voxl:/$ voxl-inspect-services Service Name | Enabled | Running | CPU Usage --------------------------------------------------------------- docker-autorun | Disabled | Not Running | docker-daemon | Disabled | Not Running | modallink-relink | Disabled | Not Running | voxl-camera-server | Disabled | Not Running | voxl-cpu-monitor | Disabled | Not Running | voxl-dfs-server | Disabled | Not Running | voxl-imu-server | Disabled | Not Running | voxl-mavlink-server | Disabled | Not Running | voxl-modem | Disabled | Not Running | voxl-portal | Disabled | Not Running | voxl-qvio-server | Disabled | Not Running | voxl-streamer | Disabled | Not Running | voxl-tag-detector | Disabled | Not Running | voxl-tflite-server | Disabled | Not Running | voxl-time-sync | Disabled | Not Running | voxl-vision-px4 | Enabled | Not Running | voxl-wait-for-fs | Enabled | Completed | I tried starting the service using systemctl and this was the output. voxl:/$ systemctl start voxl-mavlink-server voxl:/$ voxl-inspect-services Service Name | Enabled | Running | CPU Usage --------------------------------------------------------------- docker-autorun | Disabled | Not Running | docker-daemon | Disabled | Not Running | modallink-relink | Disabled | Not Running | voxl-camera-server | Disabled | Not Running | voxl-cpu-monitor | Disabled | Not Running | voxl-dfs-server | Disabled | Not Running | voxl-imu-server | Disabled | Not Running | voxl-mavlink-server | Disabled | Running | 0.0 voxl-modem | Disabled | Not Running | voxl-portal | Disabled | Not Running | voxl-qvio-server | Disabled | Not Running | voxl-streamer | Disabled | Not Running | voxl-tag-detector | Disabled | Not Running | voxl-tflite-server | Disabled | Not Running | voxl-time-sync | Disabled | Not Running | voxl-vision-px4 | Enabled | Not Running | voxl-wait-for-fs | Enabled | Completed | after configuring the voxl in softap mode, and connecting to it, the issue persists. Would downgrading the software release to VOXL Platform 3.6.0-0.5.0 help? Thanks
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  voxl-camera-server.conf
  • m1baldwin  

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  uvc-camera rtsp
  • 張為超  

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  @張為超 Great, glad to hear it is working for you now!
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  VOXL kernel build docs
  • Moderator  

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  @Moderator I just tried running those instructions for VOXL1 build, but have an issue downloading the manifest package from codeaurora. I posted an issue here about it. Please let me know if there is an update!
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  Installation mpa-to-ros
  • VOXL Flight  

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  smsc Lan95xx driver
  • ryan.langlois1  

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  Hello, The driver you are looking for (SMSC95XX) was recently added to our kernel build. It has not made its way to a platform release yet so you'll have to build kernel and flash your device with it. From the information given, I believe you are on the VOXL2 platform. If this assumption is incorrect let me know and I'll link the instructions for building the VOXL1 kernel. Here are the instructions for building the VOXL2 kernel. In order to build the kernel, you'll want to clone this qrb5165-kernel-build-docker repository. This project builds a docker image that we then use in order to build the kernel for the qrb5165 (VOXL2) device. For instructions on how to do so, you can look at our VOXL2 Kernel Build Guide. Once the kernel is flashed, you'll have the driver enabled on your device. Please let me know if you run into any issues.
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  Voxl-tflite-server error while using DeepLabV3
  • Maxim Temp  

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  @Matt-Turi Wow, thank you for updating me. I will try these models now
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  GPS time
  • Chris P  

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  @Chris-P to answer my own question, I checked the voxl-vision-px4 code and the system time will be set once from gps time (when valid) if it has not been set yet by ntp or manually.
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  ZMQ library
  • Chris P  

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  Thanks Steve, I went to compile the source code with the voxl emulator and it compiled without issues.
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  Voxl ardupilot issue
  • sergio  

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  @ James-Strawson Im sorry but is note the case…. While just activation voxl vision px4 service from fredh resceived voxl cam, voxl output local frame pos and velocitys via mavlink. so how to activate local to body frame velocity transformation? Maybe with px4 this work but with ardupilot i check on mavlink analys and i make simple translations and i can ensure you that voxl send out local frame pos and vels. Maybe you can tell me ou to force voxl to output local frame pos but body frame vels to ardupilot ? Thank you so much.
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  /etc/network/interfaces?
  • ryan.langlois1  

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  @ryan-langlois1 Seems as though you've answeredthe question yourself but by default /etc/network/interfaces doesn't exist. It is created in certain configurations i.e. using Microhard with voxl-modem
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  This topic is deleted!
  • czarsimon  

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  Multiple VOXL connect to QGC through LTE
  • Henry Cappel  

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  Ok great! Thanks for the info!
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  Unbricking VOXL
  • Rowin  

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  Oh no, sorry to hear that. Let's see what we can do to resolve that. So as not to be redundant and streamline the process, what have you attempted already to unbrick the VOXL's? Could you also provide further information on the board as well as what you were attempting to do before the VOXL's bricked? eg. software version, setup, camera config, computer setup, usb cables, power management, etc. The more information you can provide, the better we can help you.