So far I have only added water level sensors to my setup. This is the most important thing to me right now, since I have to regularly monitor the water level as part of the Krakty cycle. I am using these summersible level switches; if I add something more precise these can stay as fail-safes.
My setup consists of 4 trays, with capacity for 15 small baskets each but that can change with the help of automation if the yields would increase substantially.
This is how the water levels look when installed. Maintenance is unavoidable; plant roots WILL grow and eventually obstruct these. I used a bracket and a nylon screw and nut to hold it at the right level. I did not use the nut that you see on the product picture.