Sort of off topic...
I was wondering why ShopBot chose such a complicated system for the proximity switch.
It seems like a micro switch would have been a far simpler and much more robust option, and a lot cheaper too. A micro switch would also be able to be aligned a lot easier than using the top of a bolt. The current setup doesn't always sense the bolt exactly in the same place every time. A micro switch would always switch in exactly the same place. Sure, it would have to be a good micro switch but what would that run? $10? What does one of these fancy electronic switchy things run? $100 or more?
Just curious. Brady probably has an answer.
ShopBot Details:
2013 PRS 96x60x12 (Centroid upgrade)
4hp Spindle
12" indexer
Aspire
Rhino
Fusion 360
Ferrari 360
Prusa MK3S+
Prusa XL multi-tool