[sdiy] replacing step incrementor/decrementor with continuous pot

[Marc Bareille]

Happy Harry a écrit :

> You could use a rotary encoder (easy, not cheap) and decode the
> direction (a D flip flop works) then use the pulses to drive analog
> switches in parallel with the pushbuttons, or gates. All hardware, no code
> !!!
>
> H^) harry
>

You can grabb a good one in all  PC mouses, 2 per mouse in fact... 2 captors
made of a IR led+cell counting
holes on a little wheel moved by the ball...Dismantle a  mouse and you will see
what i mean...
If you keep all electronic circuits of the mouse it will be a kind of RS232
output or USB now....
but i suppose it should be not very difficult to build a little decoder with
few ics....
It's one of the cheapest way if you have some old mouses... but require a bit
of mechanical/electronic work...
Regards

Marc B.

>
> >From: "Rob" <cyborgzero at home.com>
> >Reply-To: "Rob" <cyborgzero at home.com>
> >To: "Plutonique9" <Plutonique9 at symbiocom.com>,
> ><synth-diy at node12b53.a2000.nl>
> >Subject: Re: [sdiy] replacing step incrementor/decrementor with continuous
> >pot
> >Date: Tue, 20 Mar 2001 11:44:05 -0500
> >
> >you need a dac to read the pot, a micro to do the controls and interface
> >with the main micro in the K3..
> >
> >Not easy.. You have to know what its looking for.. the interupts, data
> >structure, etc etc..
> >
> >It could take days and days to figure it out.
> >
> >Rob
> >
> >----- Original Message -----
> >From: "Plutonique9" <Plutonique9 at symbiocom.com>
> >To: <synth-diy at node12b53.a2000.nl>
> >Sent: Tuesday, March 20, 2001 9:12 PM
> >Subject: [sdiy] replacing step incrementor/decrementor with continuous pot
> >
> >
> > > Hey, hope that subject line made sense. I'm wishing to replace the
> > > "step button" style editing controls on my K3m and Tx81z with a
> > > Variable pot instead. I don't know how hard this is to implement,
> > > though the keyboard version of the K3 had a data slider instead of
> > > step buttons, and the dx-100 (kinda the keyboard version of the
> > > Tx-81z) also used a data slider.
> > >
> > > Can someone point me into the right direction, schematic wise, and
> > > maybe point out the methodology behind performing this sought of
> > > modification. I just can't get down with this "step up, step down"
> > > clownin' around :)
> > >
> > > Thanks
> > >
> > > -- Plutonique9, Plutonique9 at symbiocom.com
> > >
> > > http://www.mp3.com/Plutonique9
> > >
> >
>
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