I'm pinning the final video at the top. WIP follows.
I've been working on this for a while on the Workbench, and since it has passed a reasonable stage, I thought I would give it its own thread.
This is also a call out for help to finalize, because I need to find really small limit switches that are Normally Closed (Edit: This has been solved with an Arduino sketch and instructions attached further down). I found small limit switches based on a similar project by DorobouHige, but they turned out to be Normally Open, which does not work in my wiring diagram for reversing a DC motor with limit switches.
This is what the limit switches I have look like (9x5.5x2mm ). I believe they may be available in Japanese electronics stores with Normally Closed options. Larger "micro" switches wont fit in the Valk. Any help solving this would be greatly appreciated.