Chuck,

Just to clarify when you say R2 is trim, do you mean R1

David

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* * *
David Salter
Senior Consultant
SSG UKI

Thomson Reuters

O +44 (0)20 7542 2402X 52402
M 07990562402

david.salter@...
thomsonreuters.com < http://thomsonreuters.com/ >

P Please consider the environment before printing this e-mail



________________________________

From: Doepfer_a100@yahoogroups.com [mailto: Doepfer_a100@yahoogroups.com ]
On Behalf Of hamzzzald
Sent: 22 April 2009 22:16
To: Doepfer_a100@yahoogroups.com
Subject: 1 Re: tks





Hand drawn schematic from lat year's notes:
http://groups.yahoo.com/group/Doepfer_a100/photos/album/404340435/pic/17
20022171/view picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc
< http://groups.yahoo.com/group/Doepfer_a100/photos/album/404340435/pic/1
720022171/view picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc>

The pot R2 serves as a trim for range of the cv control coming from the
FSR. The LM339 is a comparator chip - experiment with threshold value
via R3 and R4. Hope this makes sense. Thanks and credit go to James Fei.

-chuck

--- In Doepfer_a100@yahoogroups.com
<mailto:Doepfer_a100%40yahoogroups.com> , <david.salter@...> wrote:

>
> Hi Chuck
>
> Would you be able to share the circuit for this
>
> Thanks
>
> David
>
> * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

*

> * * *
> David Salter
> Senior Consultant
> SSG UKI
>
> Thomson Reuters
>
> O +44 (0)20 7542 2402X 52402
> M 07990562402
>
> david.salter@...
> thomsonreuters.com < http://thomsonreuters.com/

< http://thomsonreuters.com/ > >

>
> P Please consider the environment before printing this e-mail
>
>
>
> ________________________________
>
> From: Doepfer_a100@yahoogroups.com

<mailto:Doepfer_a100%40yahoogroups.com>
[mailto: Doepfer_a100@yahoogroups.com
<mailto:Doepfer_a100%40yahoogroups.com> ]

> On Behalf Of hamzzzald
> Sent: 19 April 2009 09:14
> To: Doepfer_a100@yahoogroups.com

<mailto:Doepfer_a100%40yahoogroups.com>

> Subject: 1 Re: tks
>
>
>
>
>
> This may be of interest to the group. I made a DIY touch controller

last

> year, inspired by the Buchla controllers we have at Mills College.

Mine

> uses FSR senors rather than touch capacitance. Each sensor has cv out
> with adjustable range and a trigger out. There is also a master

trigger

> out and a Softpot "ribbon" sensor from Spectrasymbol. A very simple
> circuit - just voltage dividers and a comparator for triggers. It has
> been incredibly useful and has really opened up the performance
> versatility of a small modular system.
>
> http://www.flickr.com/photos/chuckj/3269067821/

< http://www.flickr.com/photos/chuckj/3269067821/ >

> < http://www.flickr.com/photos/chuckj/3269067821/

< http://www.flickr.com/photos/chuckj/3269067821/ > >

> http://www.cirrusoxide.com/journal/ p=75

< http://www.cirrusoxide.com/journal/ p=75 >

> < http://www.cirrusoxide.com/journal/ p=75

< http://www.cirrusoxide.com/journal/ p=75 > >

>
> Best,
> Chuck
>
> --- In Doepfer_a100@yahoogroups.com

<mailto:Doepfer_a100%40yahoogroups.com>

> <mailto:Doepfer_a100%40yahoogroups.com> , "partlydrone"
> <partlydrone@> wrote:
> >
> > hi dieter
> >
> > yes, addressed with buttons (or triggers, or voltages) wld be fine.
> >
> > i guess it would be pretty easy to develop too, although maybe

costly

> as it requires eg for a version playing four "notes / colours" of 3
> voltages each it would need 4 buttons, 12 pots, 16 jacks etc.
> >
> > please, please make one i think it would be a surprise hit once
> people realised what could be done with it, to suddenly skip between
> tone colours, it's exactly what sets modulars apart from dreary samey
> synths.
> >
> >
> >
> > i honestly think it would be a big seller
> >
> > --- In Doepfer_a100@yahoogroups.com

<mailto:Doepfer_a100%40yahoogroups.com>

> <mailto:Doepfer_a100%40yahoogroups.com> , <yahoo@> wrote:
> > >
> > > This function is not necessarily associated with a touch keyboard.
> It's kind
> > > of an dressed sequencer with 3 potentiometer rows. The addressing
> can be
> > > voltage controlled, Midi note controlled or button controlled. Of
> course you
> > > may use a TKB to adress the step of the sequencer but that's only
> one of
> > > many possibilities.
> > >
> > > Best wishes
> > > Dieter Doepfer
> > >
> > > > i agree
> > > >
> > > > i really really want a controller that lets me press a button to
> > > > change three CV's suddenly like that bugbrand controller, or the
> > > > serge, or any random access sequencer. with my modular, sending
> > > > quantised note CVs is the absolute last thing on my mind. i want
> > > > to control microtones on ring modulating oscillators, the amount
> > > > of reverb mix, and the bit crush depth, changing all three
> > > > instantly, with a momentary finger press, and then play huge
> > > > variations in those parameters like an instrument.
> > > >
> > > > i've been meaning to build my own controller for this for about

a

> > > > year and i think its a real shame that nobody else does. well,
> > > > for less than the cost of a serge.
> > >
> >
>
>
>
>
>
>
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