[sdiy] Knobs with LEDs

[Tristan]

On Sat, Apr 2nd, 2011 at 9:07 PM, Graham Atkins <gatkins at blueyonder.co.uk> wrote:

> On 2 Apr 2011, at 06:42, Tristan wrote:
> 
> > I guess the intent is only to provide indication over the  
> > approximately 300 degree range of a rotary
> > potentiometer.
> 
> But it states it is for rotary encoders.....By nature a 360 deg device.

The rotary encoder may have a 360 degree rotation but the value represented by the LEDs will typically 
have a minimum and a maximum. These points are represented by the two ends of the 300 degree arc, 
as for a conventional potentiometer's range. This is how the LED encoders work on the Nord Lead 3 and 
Nord modular G2. Of course, for representing values without a a minimum or maximum, such as 
waveforms or operating modes, then a 360 LED ring may well be preferrable. 

/Tristan