From simon@alphabeck.co.uk Sun Jun 25 12:26:01 2006
Subject:Re: VK8M Rotary On/Off?

To further clarify my comment, many units DO use a momentary switch, and simulate the behaviour of latched switching with internal electronics or logic - each time you make (or break) the circuit, the instrument changes state and remembers where it is. This takes more resources than using a physically latching switch, but is more flexible and digital-friendly.

Simon

----- Original Message -----
From: Simon Beck
To: CloneWheel@yahoogroups.com
Sent: Sunday, June 25, 2006 6:15 PM
Subject: Re: [CWSG] VK8M Rotary On/Off?

Simple answer - a latching (not momentary) footswitch. A sustain pedal of either polarity is clearly not the answer - as soon as you take your foot off, it reverts to its previous state. So you need something like the reverb switch used by many guitar amps, which changes from one state to the other when you step on it and then stays there until you step on it again. Problem solved.

Simon Beck
London, UK

----- Original Message -----
From: jake92028
To: CloneWheel@yahoogroups.com
Sent: Sunday, June 25, 2006 12:12 PM
Subject: [CWSG] VK8M Rotary On/Off?

I'm trying to set my Roland VK8M module up with my Casio PX '88 piano
that's also playing a Kurz ME1 for piano. Using a MIDI Solutions
Mapper, which they don't make any more, but I still have the simple
program tool for - I can get it to swap cc64 sustain to cc80 rotary
on. Well this is weird because as soon as I turn the VK8M on: Rotary
is on fast all the time, except while stepping down on the sustain
pedal which switches it back to slow only as long as I keep the
pedal depressed. As soon as I let up, it goes back to full speed. So
I took the Roland sustain pedal I was using, opened it up and
switched/resoldered the wires on the internal switch. I felt this
was pretty clever until.. I plugged the polarity-reversed sustain
pedal in and got exactly the same result! (Yes, I checked my
connections again afterward :)

I tried all my sustain pedals, looked in all my old gear bags, no
luck with any of them, same result. What is really strange is I can
plug a 1/4" phone plug patch cord in the sustain socket, then plug
its other end into a female stereo adapter that terminates in a
right and left RCA plug: By touching the tips of the RCA plugs
together I get fast rotary, and when I break that connection I get
slow rotary. Now what could I plug into this crazy socket to get the
same result? ..especially since reversing the polarity on the same
sustain pedal didn't work. That's reaally* weird.

Any tips, suggestions, mad scientist solutions will be gratefully
appreciated. I'd like find out how to switch the rotary on/off from
a sustain type or other simple floor switch, which I've always been
able to do with my other clone gear. This is the way I like it =
step on it to speed up, let up to go back to chorale, since I'm
ramping up and down constantly just like a Hammond/Leslie switch on
its console, flippin' it back and forth all the time. Help!

TIA ~ Walter j

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