Greybeard,
Well, It has been awhile. Glad your control box is working properly. It took me awhile to figure out the setup for the one I have. I have the servoed system.
I have been designing a project since Christmas, and just about have the design portion finished.
I have designed from scratch a wooden geared clock, except that it doesn't have any wooden gears. They are made from white corian so they will not warp, shrink, or expand. It uses sintered bronze bushings and brass shafts thru-out. It uses a very accurate strip chart recorder motor which is geared down to turn one revolution per minute. It will be resettable without manually turning the dial hands.
Designing the gears really gave me a lot of grey hair. However they mesh perfectly now with only 0.5 mm clearance. I may post photos of it on the site when it is finished. I have several hundred hours of design time in the project and also a few hours cutting some gears.
Well, I have tons of things to do, and my project is still calling me, and "I have hours and hours to go before I sleep". (Robert Frost - I believe.)
Jerry