[sdiy] push button CV wanted

[ASSI]

On Thursday 20 May 2004 00:14, raywilson at comcast.net wrote:
> I suggest an 8 bit up down counter made from 2 CD40193s and some
> stepping logic (CD40106). And then hang a R/2R ladder off of the
> outputs with a high impedance follower. Simple cheap and actually
> pretty darn accurate.

If eight bit resolution or slightly less is all that's required, you 
are far better off by using one of the electronic potentiometers with 
increment inputs to produce the CV. Also, as with all true 
potentiometers and resistor ladder DACs the reference voltage becomes a 
multiplicative factor, so you can use another CV for that to get a 
sidechain modulation.


Achim.
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