That Kickstarter project is something completely different.
However ... don't need another project to stack onto my uncompleted list.
I also don't need another project for my back burner. But I supported that project anyway. The basic kit is only $16. I will stash the kit away for future use.
And it's not something completely different, not entirely. It's a jog wheel, like the one that the Viki has built-in, but better.
Jog wheels are like keyboards or mice: you should be able to hook up two or more at the same time, and their outputs are just added together. So you can use the Viki's jog wheel for now, and add a second jog wheel later when you have more time.
The Azteeg has plenty of spare inputs for hooking things up, but somebody would have to add support for such a device to the firmware. Hopefully somebody will do this after Stepperature delivers their Kickstarter rewards.
Perhaps Roy will add a header onto the back of some future version of Viki to support external jog wheels of this type. Then no additional Azteeg firmware support would be needed, other than the Viki mods we are already waiting for.
As to your other questions: Once Deezmaker finishes testing the Viki, they will post updated firmware files as well as instructions for adding the connector to the different kinds of Azteeg, if it's not there already. This should be a pretty simple conversion.
They probably can't give us a date when all this will be ready, but I suspect they already know which pads they will be using on the Azteeg for the connector, and could tell us today if we ask nicely.... HINT HINT HINT
(By some odd coincidence, my Azteeg is not currently mounted on my printer, as I am rearranging some wires. If my Azteeg doesn't already have a connector for the Viki, I would like to solder one on before I put the thing back together, so this information would be very timely indeed.)