I've worked with the Titan and other ATIK cameras quite a bit - in the past I've written drivers for it. I know a few people have had issues with the Titan and iNDI on the Odroid.. so here's the versions I have on the box:

I'm using atikccd-1.1-v7-armhf.deb but I've built the cfitsio, Kstars, Ekos and INDI sources from scratch using the C2 to give a 64bit implementation. The rest I've taken from the standard repos - including the massive KDE development framework for the dependencies. I use the kstars 2.6.0 build.



Image taken through the televue 2x on the noise as the Titan is on the OAG.

My configuration in hardware is simple:
13.5V PSU -> UBEC ->12V (for focuser) and 5V4A for the powered USB hub.
ODroid C2 -> USB2.0 -> powered hub -> Titan

Note that the Titan is powered from the USB so you need enough juice to power it on the USB connection. This is why I use a powered hub.
Secondly the Titan is sensitive to USB read timing - but works with the two normal lengths of USB I use. Having the C2 gives a good amount of oomph to read the USB data and not have any stalling etc.

atik_ccd_test comes back fine - reading the image and all other functions

As I am rebuilding the observatory, I cannot do any testing as the electronic is all disconnected.
Whenever I'm at the wiring part, I will try a powered usb hub and see how it goes.

Yes, I think, this is the key to success! Peter

One point I missed on the original post - I use a local 'remote' INDI server.
I run an indiserver with all the drivers in a command line window then use ekos to connect to it rather than start the indi itself.

I'm not sure if there's any difference in terms of threading etc between running the local ekos indiserver or the remote indiserver.