@tom Thank you so much!
I was having the exact same problem with @marian.
I could connect to the voxl via ssh but could not via adb shell.
But could solve it after removing the /etc/udev/rules.d/51-android.rules.
Try to remove the file, who are facing the same problem with me.

@Amin-Bassiri

There will always be some reprojection error when computing a homography, as long as the error is below 0.5 (which it looks like yours is) you should be totally fine.

Let me know if you have any other questions!

Thomas

@viralp https://docs.modalai.com/image-sensor-flexes-adapters/#extending-mipi-image-sensor-cable-lengths

@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

@Moderator
Hello,

Thank you very much for your prompt response and for providing the link to the datasheet for the VOXL 1 connectors. This information is exactly what I needed. I appreciate your assistance and support.

@th70700731 Dang I am having this issue as well, would have been nice if this could have been answered.

@Irfan-Usman Sure, see these documents

VOXL 1 & VOXL CAM: https://docs.modalai.com/how-to-connect-voxl-to-pixhawk/
VOXL 2 (recommended): https://docs.modalai.com/voxl2-external-flight-controller/

@Moderator If you can provide the serial number of your VOXL CAM (form MXX00000XXX) we can check to see if we have the camera calibration data backed up in our production database and provide it if so.

@tom It worked! I tightened the screws, and it turns out it was a hardware issue. I've installed the Tailscale VPN on both the drone and my machine, and I've completed the calibration and binding. However, I'm having trouble starting the camera; it's not turning on in VLC or QGroundControl.

@plub , could you please clarify which cameras you are using in the stereo configuration? OV7251?

If the larger pattern was still detected by the procedure but was not accepted as a sample, this means that the pattern took up too little space of the desired area. You need to fill the desired area in each step almost completely, so that the sample is accepted.

Also, is your checkerboard printed on paper and attached to a very flat surface without wrinkles? A poor calibration pattern can lead to poor results.

Can you please post the result of the calibration? intrinsic and extrinsic parameters that are generated by the calibration procedure, even though it fails. Also please share the reprojection errors.

Alex