Quoted from Wizbangdoodle:I was thinking along the lines of this.
https://www.mouser.com/ProductDetail/ZF/E19-50H?qs=SkbUdWCNujuZ2Cm7oxZyIQ%3D%3D
I could then 3d print a bracket to mount it. The roller would ride on the cam disc.
Maybe I'm just over thinking the whole thing. It's what I do.
Yes, re overthinking. What makes an em an em, is all those cool retro switchy thingys, and mechanical stepper thing-a-ma-bobs, and the spinny score reels. Don't ripe the heart out of em's.