MOTM

The good old fasioned Morley volume pedals have light bulbs and a photoresistor and that's just about it. Inside, the pedal mechanism drapes a small black velvet curtian in front of the light bulb to vary the amount of light hitting the photoresistor. When I recently changed the bulb in one of these it got me thinking along the same lines.  It would be fun to alter my MOTM patch from across the room with a flashlight....

...jp
_______________________________________________________________________________

>From: motm@egroups.com on Mon, Jul 3, 2000 2:10 AM
>Subject: [motm] "Light Plug"
>To: MOTM
>
>At the recent NYC meeting, RevTor had a couple of the LED jacks (they
>light up when signal is present) that were discussed a few months ago on 
>the list. Today, reading Keyboard magazine, I came across a review of the
>"Lovetone Ringstinger" effects pedal. One paragraph caught my eye:
>
>"The unit ships with a "light plug", a 1/4" plug with a photoresistor in 
>the plastic housing. By inserting the light plug into one of the
>Ringstinger's external pedal jacks and changing the amount of light
>hitting the photoresistor, you can sweep either the LFO depth or VCO
>frequency."
>
>Seems like something similar might be a simple, interesting controller
>for MOTM, or any other CV synth. Would this work?
>
>nathan

Those Morely pedals are really great.  I have a 22 year old Morely SVOL that I need
to bring back from the dead one of these days.  It probably just needs a new bulb. 
I've even used the SVOL to attenuate control voltages.  It works just like a pot. 
For an emusic class in college I used a Moog ribbon controller like a fretless bass
guitar, with the SVOL controling the VCF cutoff - fun stuff!

   Eric

--- "joe.pavone" <fuzztone@...> wrote:
> The good old fasioned Morley volume pedals have light bulbs and a photoresistor
> and that's just about it. Inside, the pedal mechanism drapes a small black velvet
> curtian in front of the light bulb to vary the amount of light hitting the
> photoresistor. When I recently changed the bulb in one of these it got me thinking
> along the same lines.  It would be fun to alter my MOTM patch from across the room
> with a flashlight....
> 
> ....jp
> _______________________________________________________________________________
> 
> >From: motm@egroups.com on Mon, Jul 3, 2000 2:10 AM
> >Subject: [motm] "Light Plug"
> >To: MOTM
> >
> >At the recent NYC meeting, RevTor had a couple of the LED jacks (they
> >light up when signal is present) that were discussed a few months ago on 
> >the list. Today, reading Keyboard magazine, I came across a review of the
> >"Lovetone Ringstinger" effects pedal. One paragraph caught my eye:
> >
> >"The unit ships with a "light plug", a 1/4" plug with a photoresistor in 
> >the plastic housing. By inserting the light plug into one of the
> >Ringstinger's external pedal jacks and changing the amount of light
> >hitting the photoresistor, you can sweep either the LFO depth or VCO
> >frequency."
> >
> >Seems like something similar might be a simple, interesting controller
> >for MOTM, or any other CV synth. Would this work?
> >
> >nathan
> 
> 


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In a message dated 7/2/2000 11:02:20 PM, nate@... writes:

>Today, reading Keyboard magazine, I came across a review of the 
>"Lovetone Ringstinger" effects pedal. One paragraph caught my eye:
>
>"The unit ships with a "light plug", a 1/4" plug with a photoresistor in
>the plastic housing. By inserting the light plug into one of the 
>Ringstinger's external pedal jacks and changing the amount of light 
>hitting the photoresistor, you can sweep either the LFO depth or VCO 
>frequency."
>
>Seems like something similar might be a simple, interesting controller
>for MOTM, or any other CV synth. Would this work?

It sounds like it would work, and could be fun to use. I'd prefer to have the 
photosensor to be on a cable so it wouldn't be dependent on the light which 
shines on the modular. I'd want to try putting it outside at night so that 
car headlights would effect it, or maybe in the bathroom so when the light 
goes on and off it would do something.

I recently found one of those motion detectors for a burglar alarm, and I 
hope to use that with my modular stuff. Has anyone used these in this 
context? It looks fairly straight forward.

JB

Although this sounds like a cool idea, I don't know if the unit would
work in the manner you describe it. The CV monitor used a 1/4" plug, a
resistor and an LED. It works because a voltage there is voltage present
at the jack to power the LED. If you were to remove the resistor and
replace the LED with a photocell I don't think the photocell would
generate voltage to control an module. If I recall correctly, a
photocell acts a variable resistor, in order for this circuit to work
you would need a source voltage for it to do anything. I wonder if a
solar cell would produce the effect you are looking for? It would be
very interesting under stage lighting since a solar cell responds
differently to varying intensities and colors of lights. You'd probably
have to deal with a portamento effect on the response though figuring
the FM controls on the modules don't draw enough current to drain the
cell instantly. -Nate ( the other one)

nathan durham wrote:

> At the recent NYC meeting, RevTor had a couple of the LED jacks (they
> light up when signal is present) that were discussed a few months ago
> on
> the list. Today, reading Keyboard magazine, I came across a review of
> the
> "Lovetone Ringstinger" effects pedal. One paragraph caught my eye:
>
> "The unit ships with a "light plug", a 1/4" plug with a photoresistor
> in
> the plastic housing. By inserting the light plug into one of the
> Ringstinger's external pedal jacks and changing the amount of light
> hitting the photoresistor, you can sweep either the LFO depth or VCO
> frequency."
>
> Seems like something similar might be a simple, interesting controller
>
> for MOTM, or any other CV synth. Would this work?
>
> nathan
> -----------------------------------------------------------------------
>
> -----------------------------------------------------------------------
>

Oooops! I should proofread what I type before I send it. Please ignore
the "a voltage" in sentence 3. It should read "It works because there is
voltage present at the jack to power the LED." And while I'm at it
change that "an module" to "a module" My mistake. Sorry -Nate H.

Nathan Alan Hunsicker wrote:

> Although this sounds like a cool idea, I don't know if the unit would
> work in the manner you describe it. The CV monitor used a 1/4" plug, a
>
> resistor and an LED. It works because a voltage there is voltage
> present
> at the jack to power the LED. If you were to remove the resistor and
> replace the LED with a photocell I don't think the photocell would
> generate voltage to control an module. If I recall correctly, a
> photocell acts a variable resistor, in order for this circuit to work
> you would need a source voltage for it to do anything. I wonder if a
> solar cell would produce the effect you are looking for? It would be
> very interesting under stage lighting since a solar cell responds
> differently to varying intensities and colors of lights. You'd
> probably
> have to deal with a portamento effect on the response though figuring
> the FM controls on the modules don't draw enough current to drain the
> cell instantly. -Nate ( the other one)
>
> nathan durham wrote:
>
> > At the recent NYC meeting, RevTor had a couple of the LED jacks
> (they
> > light up when signal is present) that were discussed a few months
> ago
> > on
> > the list. Today, reading Keyboard magazine, I came across a review
> of
> > the
> > "Lovetone Ringstinger" effects pedal. One paragraph caught my eye:
> >
> > "The unit ships with a "light plug", a 1/4" plug with a
> photoresistor
> > in
> > the plastic housing. By inserting the light plug into one of the
> > Ringstinger's external pedal jacks and changing the amount of light
> > hitting the photoresistor, you can sweep either the LFO depth or VCO
>
> > frequency."
> >
> > Seems like something similar might be a simple, interesting
> controller
> >
> > for MOTM, or any other CV synth. Would this work?
> >
> > nathan
> >
> -----------------------------------------------------------------------
>
> >
> >
> -----------------------------------------------------------------------
>
> >
> -----------------------------------------------------------------------
>
> -----------------------------------------------------------------------
>