radish Wrote: 
> From what I can tell that is an actual volume control, i.e. it talks
> about attenuation. In this case the actual attenuation is happening
> digitally, in the SB, so the wheel itself just needs to be an encoder.

I think it does not even need to be an encoder.  We just need to sense
movement and calculate velocity. With just 1/0/1/0 digital switching
happening as the dial is turned, we have a lot of latitude on
implementation. It actually does not matter if our sample rate is a tad
too slow for the fastest spinning dial; if we miss a bit here or there,
it wouldn't even be noticable, or worst-case, we bottom out on
velocity.  I think we would be CPU limited at some point, anyway
(scrolling fast enough.)


-- 
Dave D
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