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Dice analyzer machine project

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Stoic Joker:
Plastic dice aren't that heavy...so as long as the dice aren't made of metal or glass, the CR39 lens/base should hold up just fine. I've worn glasses for years, and they're surprisingly hard to scratch.

Stoic Joker:
Or for a controlled impact bottom camera type configuration:

mouser:
yeah something like that could work, driven by a motor.
Especially if the bottom funneled the (single) die down to a smaller more predictable area. having a smaller (say 1-2 inch diameter) bottom area (think of a CUP shape or upside-down cone), it would be able to rest closer to bottom of base.

That does seem to offer a fairly reliable way of shaking up the die too.

Stoic Joker:
Especially if the bottom funneled the (single) die down to a smaller more predictable area. having a smaller (say 1-2 inch diameter) bottom area (think of a CUP shape or upside-down cone), it would be able to rest closer to bottom of base.-mouser (January 25, 2016, 12:59 PM)
--- End quote ---

A 2-4 diopter curve (assuming the front is 0/1) should make for a sufficient "cup". ;)

mouser:
Well there's no reason that the lens curve has to be the entire "cup".. the lens could simply be the BOTTOM of a more pronounced and sharper dimple in the bottom of the container that spins.

Think of the spinner as being formed from two of these, where the bottom of the cup is the lens, and the two cups are attached at their wider mouths.



And of course there is no reason the container has to be symmetrical.  you could have the sharp-sloped cup on one and and more of a half-sphere on the other (like an ice cream cone) -- whatever would better tumble the die.  The key thing is that when the cup end comes to rest, it constrain the die to a very narrow region on the base.  That has 2 advantages: First, it centers it above camera more narrowly, and second, it means less clearance distance needed so the bottom of the cup can be closer to camera.

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