This was the response from SynScan team:

1. Ping from the Linux host to the IP address to confirm the network connection is right.
You may ping 192.1684.1(Mount/Access Point) first and then try 192.168.4.2
2. Connect to the mount in the SynScan App, recommend to do an alignment first.
3. On the Linux host, use a Linux tools/application to send a command to the device that runs the SynScan App. Using the device’s IP address and TCP port 11882 for “SynScan Serial Communication Protocol”, use UDP Port 11881 for SynScanMobile CommandSet . The command set can be found here: www.skywatcher.com/download/manual/application-development/
4. You might need to check the firewall settings of the Linux host.


Side note: On the mount driver list there is Sky Scan and SynScan, when I hovered over both pointed to same indi driver? Also tested with Skywatcher AltAZ drivers , same result.

So all the above attempts were with IOS app which never succeded. Gave a try with android app, Atleast ekos was able to connect to the app and then it crashed.
Attached the crash logs for investigation

I was able to connect to iOS and it crashed the as well. So behaviour between iOS and Android is consistent.

Thanks for that, I will try with another iPhone in that case.
Looking at the code it may be crashing while getting version no from the mount. Will wait for Jasem to check.

I just pushed some code that adds more debugging and supposed to catch the exception that caused the crash. So please pull from Github and compile and test.

Yes! It works now.Thank you so much.

Compiled the code on Raspberry Pi and tested using android . Mount came online and was able to issue commands from ekos / kstars.

I must appreciate the code refactoring you did around this. Big thinking !

Great! I'd like to ask for one favor though. Can you please write a guide for new users on how to do this? Not the compiling part, but the rest. Then we'll add it to the driver documentation and everyone benefits from this information. Appreciate it!

Cool stuff that It works on the Raspberry Pi. I reckon most users won't want to connect a Raspberry Pi though to the Small AZ GTi, but rather connect from their desktop KStars. Can you let me know, when this fix goes into the desktop versions of KStars. I am happy to test it then on MacOS.

It doesn't matter if it is from RPI3 or Mac, what matters is you are all in the same network so you can communicate with each other.

I know, but that was not my issue, I had the same crashes when connecting.

My point is, I can't test it unless it is in the next release of KStars. I can't compile the source.

Documented the steps here:

github.com/tkottary/raspberry-pi-3/blob/master/AZGTI-Indi.md

Great work! I just took a look at INDI's Synscan documentation and it was pretty minimal. Can you please edit it to make up to date? Especially screenshots for all the various tabs..etc. I granted you privileges to edit the page and it would greatly appreciate if you can update it.

The page above was copied from EQMod documentation so clearly a lot is not applicable, but it is there to get your started. The only information on the previous documentation that might be of interest is this tidbit: