Sustain pedal schematic.

[Marcin Górnicki]

Hi,

I'm looking for electronic schemat of sustain pedal for YAMAHA PSR-220.
I need every info.

[Michael R. Kesti]

"Marcin Górnicki" wrote:

It's simply a normally closed SPST switch wired across a TR (tip-ring)
1/4" phone plug.

--
========================================================================
Michael Kesti | "And like, one and one don't make
| two, one and one make one."
mke...@gv.net | - The Who, Bargain

[macminer]

The other guy was right. Usually sustain pedals are just on-off
switches, the major difference between brands is that Roland/Yamaha
sustains normally are shorted (no sustain) and opened when sustain is
applied, whereas Casio and some other brands use the opposite logic.

BTW, I guess you speak Polish... And maybe I've just found a lost
relative? :)

--
_____ @ +` {#
|. .| <|/ {# macminer
|_-_| | {## @polbox.com
|___==| / / {### aka Maciej Gornicki

[marcel...@nospammyc.2y.net]

Actually, I had a simple switch (normally open) as a pedal for a Yamaha
PSR 310, until I bought the Yamaha pedal.

About "guessing the state in which the pedal is at power-up is the
not-pressed state", well... my current Korg device can be set the polarity
of the pedal ( it is, use a normally-open or normally-closed one). I guess
that's not supported by the Yamaha PSR-220, but I write it for
completeness. The Yamaha keyboards, as I recall, use "normally open"
sustain pedals (while for Korg they're normally closed unless set
otherwise).

Marcelo

On Tue, 1 Oct 2002, Jim Higgins wrote:

> On Tue, 01 Oct 2002 00:45:27 +0200, in
> <anak30$o3f$1...@news.tpi.pl>, macminer
> <macminer-j...@polbox.com> wrote:

>
> >Marcin Górnicki wrote:
> >>
> >> I'm looking for electronic schemat of sustain pedal for YAMAHA PSR-220.
> >> I need every info.
> >
> >The other guy was right. Usually sustain pedals are just on-off
> >switches, the major difference between brands is that Roland/Yamaha
> >sustains normally are shorted (no sustain) and opened when sustain is
> >applied, whereas Casio and some other brands use the opposite logic.
>

> On a number of Yamaha keyboards the position of the sustain pedal
> at powerup is assumed to be the off position. Thus the keyboard
> will (usually) work with pedals that are either normally open or
> normally closed.
>
>

[crash.14...@gmail.com]

Mypedalseems to be missing something

[Pete]

In article <f41fec92-4a12-4206...@googlegroups.com>,

<crash.14...@gmail.com> wrote:

>Mypedalseems to be missing something

Not very explicit... (:-)) What exactly is it missing?

A sustain pedal is just a switch -- either normally-off or normally-on,
depending on the make. (Though there are some newer ones that have
a 'half-way' position as well. Not sure exactly how they're set up.)

-- Pete --