ModalAI Forum

@Joshua-Ermias yes that would be the easiest way. You can either restart the service with systemctl restart voxl-camera-server or just power cycle your VOXL

I just found out, that the voxl-dfs-server is disabled at default. So I run systemctl enable voxl-dfs-server and it worked fin.

@modaltb I sent it for repair You fond an issue with bad connexion on camera I received it back It is working OK BUT I have an other issue regarding connecting to ArduPilot It seems it is having issue with MavLink Message : voxl-mavlink-server[3036]: ERROR message magic number wrong #284 And it seems to reconnect under a different ID [image: 1678979819117-f7f5c17a-561e-473f-8ddc-f930bc8f0b8a-image.png] Do you have a clue? Do you want me to open a new issue so we can follow more efficiently ? Regards

@Adrian-Hidalgo said in rx-tx from v2 to voxl: px4_uart_bus": 12, for J11 connection worked transmitting data now

The VOXL CAM is a development kit for SLAM that comes with a number of reference implementations. None of the reference implementations require a closed loop. voxl-qvio-server provides a dead reckoning service based on visual inertial odometry voxl-mapper provides a mapping and planning service for navigating congested spaces

It is on the roadmap! Hopefully in the next 6 months or so

@Connor-Fuhrman , I am not sure. Please try to enable debug-level logging, so you may see some errors (both in your application) and voxl-streamer. In your application you can add the following : M_JournalSetLevel((M_JournalLevel) debugLevel); example: https://gitlab.com/voxl-public/voxl-sdk/services/voxl-camera-server/-/blob/master/src/main.cpp?ref_type=heads#L301 voxl-streamer already has this option, just need a command line option : https://gitlab.com/voxl-public/voxl-sdk/services/voxl-streamer/-/blob/master/src/main.c?ref_type=heads#L383

It's possible that the lens has been knocked out of focus. See @Dobry-Kolacz 's write-up here on addressing that issue: https://forum.modalai.com/topic/1362/sentinel-stereo-camera-calibration-inconsistency/4?_=1674364904154 "To adjust the focus on our stereo cameras twist the lens housing clockwise or counterclockwise similarly to how you would on a DSLR lens. Look closely at the stereo cams and you will see 4 flat edges. I recommend using a 6mm wrench to engage 2 of the flat edges; from there you'll be able to rotate and adjust the lens as needed. It is possible to use something like tweezers or small pliers to accomplish this however I recommend against that method because it is too easy for the tool to slip off and end up scratching the lens. To clean the lens I recommend using a clean microfiber cloth, a lens tissue, or a fresh q-tip"

@yhcho61 If you're asking where to plug in the antennas to the Voxl-Cam, then most times the Voxl-Cam has extensions from which to attach the LTE antennas to. If it didn't, you would just need to take the backpack off and thread the antenna through the slot of the backpack and plug them in to the modem. Reattach the backpack and then initialize the modem to use it.

just updated datasheet link to https://www.ovt.com/wp-content/uploads/2022/01/OV7251-PB-v1.9-WEB.pdf thanks for pointing out

Hi, What software version are you running? This was an issue we saw commonly on some of our older software versions but fixed in our release of SDK 0.7 with the addition of a new exposure algorithm. You can check the software version on the drone by running voxl-version.

I'm not 100% sure but I think you can check if you have publish /mavros/companion_process/status with component value 196 correctly, it should be publish by px4 avoidance automatically if your setup is good.

Hey @Steve-Turner, thanks for your answer, I will take a look into it!

Hi Alex, I have noticed following things: When I am using camera-configuration of stereo+tracking, camera server is not stopping after enabling and starting dfs server. When I am using camera-configuration of tof+stereo+tracking, camera server is stopping after enabling and starting dfs server. Tof sensor is working fine when not using dfs server. So, the problem of camera server getting stop with the configuration of tof+stereo+tracking and after enabling and starting dfs server a hardware issue? Does collision prevention works without the depth from stereo server instead just with the depth from tof sensor? Thanks! Anubhav

@Anubhav same issue here, have you figured it out?