@M-al-khatib
I followed the directions :https://docs.modalai.com/sentinel-user-guide-connect-gcs/#vpn-setup
There is a link in the middle
"In order to install the Tailscale client on VOXL 2, follow these instructions: Installing Tailscale on Ubuntu 18.04."
That worked settng up TailScale for me very easily.

@M-al-khatib
I followed the directions :https://docs.modalai.com/sentinel-user-guide-connect-gcs/#vpn-setup
There is a link in the middle
"In order to install the Tailscale client on VOXL 2, follow these instructions: Installing Tailscale on Ubuntu 18.04."
That worked settng up TailScale for me very easily.

I have a Sentinel with the 5G modem installed.

I have not put in a sim card yet and have been operating using the alpha WiFi antenna. I had my maiden flight today including doing a waypoint mission wiht QGC.

I had a lot of disconnect / reconnect announces. I was not flying far - 50m max and no more than 10m high.
I have a travel router taped to the top of my monitor as the connection point.

What can I look at to see if the signal is fluxuating and really that weak?
Do I need to shift to 5G? (maybe the SANAV anntennas will make a difference?)

I am also starting to learn how to use logs. If there is a good tutorial I can look at I will certainly spend time there.

@Paul-Carff OK I guess 4th time is a charm. I completed successfully on the 4th try.

I seem to have successfully calibrated the tracking camera and the front stereo cameras.

However the rear stereo cameras are not so easy:
This is on a sentinel wiht SDK 1.0.0

voxl2:~$ voxl-calibrate-camera stereo_rear -s 6x9 -l 0.036
Please open voxl-portal in a web browser to view the camera calibrator overlay stream
Calibrating Left Camera
Matrix
[501.6341078021471, 0, 312.0570434152602;
0, 501.6987891542731, 222.2877324066488;
0, 0, 1]
Distortion
[-0.1502441527526627;
0.03136514258800416;
5.047978211251211e-06;
0.0007012198359013242;
0]
distortion_model: plumb_bob
Re-projection error reported by calibrateCamera: 0.339971
Calibration Succeded!
Calibrating Right Camera
Matrix
[499.4811952338386, 0, 314.4191622715103;
0, 499.6489291511509, 227.6223607658805;
0, 0, 1]
Distortion
[-0.1549310463664996;
0.03293348747609434;
-0.0007877854337037341;
0.0003367908453812461;
0]
distortion_model: plumb_bob
Re-projection error reported by calibrateCamera: 0.322899
Calibration Succeded!
Calibrating Extrinsics
4 frames will be processed
R
[0.9986976114002246, -0.05097017966660664, -0.002263132395515557;
0.05095755996436296, 0.9986866400336852, -0.005321851248074788;
0.002531415802302149, 0.005199596424927816, 0.999983277925713]
T
[-0.08038782105206063;
-0.005256904223362341;
0.003021027838004832]
Re-projection error reported by stereoCalibrate: 0.524123
Detected horizontal stereo pair
Distance between cameras: 0.0804
Extrinsics Calibration Failed
exceeded allowable max reprojection error: 0.5

Saved intrinsics to: /data/modalai/opencv_stereo_rear_intrinsics.yml
Exiting Cleanly
voxl2:~$

@Eric-Katzfey Thank you

@Paul-Carff I have upgraded to voxl2_sdk1.0.0 onto my Sentinel.

I believe this SDK uses px4 version is 1.14 Should I be using the v1.14 params now?

@Paul-Carff
Well that is embarassing. -s not -t

Thanks all for the help - can close this one out as operator error.

@Paul-Carff OMG - I just read my notes when I first configured and I wrote down that I used voxl-bind -s
Can't wait to test when I get home tonight.

@RichieRich
Connected a new radio and have the same issue.

This is curious as I can put it into bind mode via adb shell or ssh and voxl-bind -t or voxl-bind-spektrum -t depending on the SDK version.
So it does communicate.

Confirm I am using the 22 ms setting and now that I just re-read your note and looking at the githhub:

Command Line Options

-d, --debug enable debug messages
-h, --help print this help messsage
-t, --DSM2_22 3 pulses (DSM2 1024/22ms)
-f, --DSM2_11 5 pulses (DSM2 2048/11ms)
-s, --DSMX_22 7 pulses (DSMX 22ms)

I will give the -s command a test tonight.

I am doing this on my own time in the evenings - sorry I am so slow to respond.

@Eric-Katzfey Thanks Eric - I will check the receiver and I have ordered a replacement to swap out as well. Will let you know what I find.