[sdiy] rectangular scanner

Oren Leavitt obl64 at ix.netcom.com
Wed Apr 15 03:39:43 CEST 2020


Some years ago I did something similar using an LM3914 operating in 
"dot" mode, with each LED output driving a preset pot.

On 4/14/20 7:20 PM, ulfur hansson wrote:
> hello list,
>
> always been very intrigued by scanner mechanisms - david dixons 
> scanners are works of art, and i built a haible scanner many years ago 
> that worked but it didn't have the same level of control as davids. 
> very powerful stuff.
>
> however - right now i'm working on a dual oscillator board design, and 
> i want to be able to set the offset of oscillator 2 in certain pitched 
> increments - if I could say, "drive" 4066's or a fancy max chip to 
> switch between carefully trimmed voltages with a scanner, wouldn't 
> this application call for some sort of "rectangular" scanner?
>
> ideally, something which can go "high" on any given number of outputs 
> depending on the incoming control voltage, no slopes or crossfading - 
> just ons and offs for each incremental output depending on the control 
> voltage.
>
> any help would be greatly appreciated, this quarantine is well spent 
> learning new tricks in synthdiy!
>
> hope you all are well,
> -úlfur
>
> -- 
>> ulfurhansson.com <http://ulfurhansson.com/>
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> instagram.com/ulfur_ <http://instagram.com/ulfur_>
> .•°~ Úlfur - Arborescence on Spotify 
> <https://open.spotify.com/album/118CEJliIg47Jcr70y7Kww>
>
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