[sdiy] dave smith *instruments*

[Tom Wiltshire]

You might have hit on a key point there, Dave. There's a substantial  
difference between a control that works well for programming in the  
studio (for which an encoder interface might actually be perfectly  
ok), and one that's for live tweakability. The needs of these two  
different uses might imply different solutions.

T.

On 1 Feb 2010, at 21:36, Dave Manley wrote:

> One alternative I've seen on a Boss SE-70 uses an encoder with a  
> built-in momentary push switch.  Counts by 1 with the switch out,  
> by 10 with the switch in.  Very usable encoder interface, and since  
> there's only one encoder on the box, not a big expense.  It's good  
> for data entry, but not as a performance control.  I haven't priced  
> them, so no idea how much of an adder there is.
>
> -Dave
>
>
> Tom Wiltshire wrote:
>> There's one other issue with encoders, which is that (detents or  
>> not) it is very difficult to get enough resolution out of the  
>> movement you can do in one turn. Whereas with a (decent quality)  
>> pot I can get somewhere between 8 and 10-bit resolution (e.g.  
>> 250-1000 separate readings) fairly reliably, I can't get any like  
>> such a high number from 300 degrees of travel on a rotary encoder.  
>> Even if I do it the hard way and use every single phase transition  
>> to give me 4 increments per detent - typical encoder has 20-30  
>> detents, times four equals around 100 positions. And that's in 360  
>> degrees.
>
>
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