That's quite simple. There is no code responsible for speed settings in INDI driver with Starbook interface. I might add this in 0.5. I haven't found a need for this in my use case. It's good to hear that you can also use Starbook TEN as I have no access to it. I could only hope that they haven't changed their communication protocol in the new device.

I have a tight schedule right now. I'm open for pull requests. I expect 0.5 to be finished in 3 months, even though it won't be a big update.
I want to achieve good enough stability to jump straight to 1.0 release.

I found myself in the observatory recently. And I mostly finished 0.5 because of that. You can see progress right here:
github.com/indilib/indi/pull/893

When it merges, you can update from nightly.
I'm happy with how it works now, next time I will mark it as 1.0 and update documentation. All basic capability is here.

Version 0.5 will be available soon, through nightly channel. It should be all from me for a while. For now I encourage you to find and post bugs and feedback.
Please, post bugs using GitHub issues

Thank you very much for your hard work. I had not much luck with the weather since I got my Vixen but the few times I had the chance to see the sky your driver worked very well.

I still have to test some advanced things like automated meridian flips and so on but so far it looks very good.

It's good to hear that Starbook is ready to be supported by INDI. Thank you for the great contribution!! Here is one thing about the pattern of RA in the response to GETSTATUS command.

static regex pattern(R"((\d+)\+(\d+)\.(\d+))");

The 3rd (\d+) group of HMS returns from my Starbook S is ranged from 0-9, so I doubt that this group should be the fraction part of minutes rather than seconds. Does it mean that there is the difference between Starbook S & Starbook 1 regarding to HMS definition?

I can confirm that on Starbook L values are 0-9. So probably one tenth of a minute. You can fill bug report or make PR, as I used all my free time on 0.5. GitHub issues

Edit: deleted, same content than my next post.

Hello

I have the starbook Ten with firmware 5.00.
It failed With the last version of the Strabook driver. It was working well with the previous version.

Kstar message:
KStars detected INDI driver indi_starbook_telescope crashed. Please check INDI server log in the Device Manager.

Console log message (with all debug activated)
2019-05-05T14:22:40: [ERROR] map::at
2019-05-05T14:22:40: [INFO] Starbook is online.

With Wireshared, only 1 HTTP session was done:
What can I do to help debugging ?

I found and fixed the issue in v0.7 of the driver. It should be out on nightly later today.

Thanks ! it's working well in the new v0.7.

Version 0.7 which is bundled with 1.7.8, creates regression for Starbook L/S. This is intended audience for this driver, and changes regarding Starbook TEN shouldn't break experience for older device.

github.com/indilib/indi/commit/bd0ae21ef...a892032cdcecb21cbe38

should the parser then converts all responses to upper case first?