[sdiy] DIY slide-bars

[Harry Bissell Jr]

At one time, Interlink made an FSR slide potentiometer
with Z-axis sensing. They buffered the "wiper" with
a very high impedance to select the "voltage" from
the resistive element, then used the std. technique
for the pressure sensitivity.

Sadly, this design is NOT included in the FSR kit
anymore.  A good number of the FSR sensore in the kit
are too small (imho) for S-diy, but there are some 
good pad and strip sensors. I made some pressure
sensitive footpedals with them for drum applications.

I think the Electronic Peasant did a diy ribbon
controller...

H^) harry



--- Fernando de Izuzquiza <fdi at ran.es> wrote:
> Hi Toby, Magnus et al,
> 
> The qslide seems to output 128 values only. This
> will produce 
> noticeable low resoluion... (my experience is that
> at least 4096 values 
> are needed for a gesture controller that worths it's
> name)
> 
> I would do it with a sensor similar to the long
> force sensing 
> resistors. In fact you can have a slide sensor on
> top of a presure 
> sensor and have a position+pressure controller.
> The pressure controller (force sensing resistor, aka
> FSR) can be 
> purchased from Interlink in a developer package
> basis (4 sensors of 
> each 4 types for about $100) or in large quantities
> (500 or 1000 I 
> think!)
> I haven't find a direct source for the slide type,
> but you can buy one 
> or two from the iCube people (but expensive this
> way)
> 
> As you see I'm interested in this subject too. It
> would be great that 
> someone develop a circuit to use this sensors as VC
> sources.
> In PAiA site there are some clues of how to do it.
> There is a little 
> interface designed for FSR, electret mics and piezo
> elements in the 
> MIDIbrain pages.
> 
> Fernando
> 
>  > De: "Paddock, Toby" <tpaddock at seanet.com>
>  > Fecha: Tue, 27 Jul 2004 07:23:13 -0700
>  > Para: <synth-diy at dropmix.xs4all.nl>
>  > Asunto: RE: [sdiy] DIY slide-bars
>  >
>  >>> 1) How did these classic slide bars work? What
> materials etc. was 
> there?
>  >>> 2) How could one make one today? I am looking
> for a fairly stable 
> design,
>  >> so
>  >>> antistatic foam is out, OK?
>  >>
>  >
>  > Has anyone used these for anything?
>  > http://www.qprox.com/products/qslide.php
>  >
>  > Toby Paddock
>  >
>