I’m on Mac so I can’t try.

If there's anything I could provide to get this focuser to work let me know.

Yes, as I posted earlier in this thread:
Another approach is to try to access the Steeldrive serial port via another program like Screen or Minicom pbxbook.com/other/mac-tty.html in a console.
You have to 'talk' the protocol to see anything assuming it is ASCII based. This may help diagnose the issue.

Hans, I‘ve seen your post but I thought it was not necessary as the focuser is working flawlessly with two different apps (TheSkyX and AstroImager) on my Mac with the same serial port driver (cu.usbserial-A907KE80).

And I must admit that I‘ve no clue what to do or 'talk' to my focuser or what to report here.
I‘m not in coding or something. Just a normal user.

I can't do much about the driver unless it's connected to some Linux machine that I can access remotely. I don't know how to debug drivers in Mac, but in Linux I can. When I wrote that driver a couple of years ago, it was working flawlessly with the focuser.

Noted. I still think this is the best way forward, as the only alternative I can think about is you setting up a full compiler and debugger. My hypothesis is there is a basic connection issue that might show with other tools as well. We may need a few rounds to get the needed info though. I hope you're up for it

The idea is the following : use a text terminal with a command line tool like screen to connect to the proper serial port and ask the focuser to report its version. That's all. If that works then the other commands will too.
If you use that URL that I pasted earlier to install screen and/or minicom then we can proceed. You may need both. Run these commands with the instructions below and paste us the exact input/output of the teminal text.

Like this :

And in minicom you typeand press enter at the end. We need Minicom to send a line feed and a carriage return. We may need to configure that if it doesn't do that by tiself already.

And we expect something like the example answer from chapter 3.2.4 in www.baader-planetarium.com/en/downloads/...al_documentation.pdf :
Let's see how far we get.

Thanks you very much!

Ok here we go: after fiddling with minion 2.2 (too old) I managed somehow to get version 2.8 running.
I did what you suggested but I can't get anything back after $BS GET VERSION.

Nice ! You got farther than I had expected already in that you have the rights to open the serial port and the focuser even says 'hi'.
I assume we now need to set the proper line ending, the spec wants \r\n , that is a carriage return and a line feed. And minicom can be told to use this in the menu.
When you go to the menu with Meta-Z in Mac (CTRL-A Z in Linux) you get a menu with ao. these two lines :When you press U the setting is toggled, the menu exits and you get to see a line at the bottom briefly statingorAnd similar for when you press A.
You want both carriage return and linefeed ON.
Then try again with

I did everything as suggested but after pressing enter still nothing happens.

Thismay warrant a chat with the device vendor (Baader).
You're using a regular terminal app, with the prescribed settings, and you see the welcome message, yet you cannot query the device.
Maybe they have ideas what to try next.

Hello,
I am the developer of the SteelDrive II hardware.

From what I read, the device is working with TheSkyX, AstroImager and also via INDIGO.
So I suspect your terminal settings might not be correct yet.

In order to rule out a specific malfunction of the "GET VERSION" command, please try:
$BS STOP
We can be sure this must return
$BS OK
as it is a command necessary for the other drivers to work, which you have proven.

Also please make sure to update your device to the latest firmware:
www.baader-planetarium.com/de/downloads/...mware_march_2021.zip

best regards,
Roman

Hi Roman,
thank you very much for chiming into this issue.
My Steeldrive has the latest firmware.

Just curious: Do you have the chance to try the INDI driver on Linux as this could also a MacOS related problem.

All the best,
Oli