Since this https://github.com/betaflight/betaflight/blob/9425831756015a81fe82b9c5a768c264c8603da1/src/main/msp/msp.c#L2543-L2548 is what's available through MSP I think the simplest solution is to do it as a menu function. Unless you're going to make some MSP changes. Would be nice to have a page like the one in your .gif where we could calibrate and see the status.

@klutvott123: Yes, the idea is definitely to extend MSP to at least allow calibration of gyro / ACC / baro to be performed. Not sure about the status feedback, this would require more MSP changes, and probably a new MSP command. Combined with the fact that we cannot poll MSP over SmartPort too often this will probably mean that a 'live' display like in CMS will not be feasible.

In that case I think we should put it in the menu just like the reboot function. Maybe we can do a reboot to let the user know something actually happened.

Isn't calibration in the field easily done via RC commands...?:

@RipperDrone: Yes it can be done, but the user needs to know the right stick combination (I carry a print out of the stick commands in my field kit). We want to make it as easy as possible to calibrate, to avoid users getting stuck in the field without being able to calibrate.

Is it possible to make a script that shows the stick combinations on your radio screen? Possibly part of the tools menu?

For full size Taranis transmitters, there is an old lua script by the name Cleanflight Commands that allows running Mode 2 stick functions. Should still work with Betaflight as the stick combinations are the same.

It was initially posted by Nek on RCGroups : https://www.rcgroups.com/forums/showpost.php?p=30993861&postcount=4366

The same script is also posted on: https://rcsettings.com/index.php/viewdownload/13-lua-scripts/204-cleanflight-commands

I ran it via the OpenTX Companion Simulator on an X9d model and it still works. I do not own one and have never seen one in real life :)

To get it to work, I had to comment lines 136 & 146 as the lcd.lock() function that had been made redundant since OpenTX 2.1.

You will also need to updated the Channel numbers for your Throttle, Yaw, Pitch and Roll axis on lines 3 to 6 based on your transmitter setup.

After editing the lua script, copy it to the \SCRIPTS\TOOLS\ folder on your sdcard and execute it via the Tools menu on your transmitter.

I only have an X-Lite S transmitter and the script does appear to run but does not display anything properly on screen due to the differences in screen dimensions. (At least this is what my Geologist brain could assume :) ).

I managed to modify the above Cleanflight Commands lua scipt (originally posted by Nek on RCGroups) and tested it to work perfectly on my X-Lite S.

Attached the lua script here as a .txt file extension but you need to change it to .lua and copy it to the \SCRIPTS\TOOLS\ folder on your sdcard and execute it via the Tools menu.

Calibrate Model.txt