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Sequencer step switches

Sequencer step switches

2008-05-17 by Jeff Laity

I'm working on the event sequencer right now using the Bride Chamber
panel. I don't see in the schematic how the step switches are supposed
to be wired up, am I missing something? Do they go between the input
jack and the board?

Also, for wiring pots to this circuit, do they go to the half-normal
of a Switchcraft 112X jack? I assume if a signal is plugged into the
input jack that I don't want any additional voltage going to it, right?

Thanks.

Re: Sequencer step switches

2008-05-17 by Scott Deyo

You could use switches between the pots and PCB, connecting to ground
as the 'off' setting.
However, I'm not sure how useful that would be in action. I think I was
referring to LEDs, because I can't believe I would forget to leave
holes for those!

The basic wiring that is not on the CGS site:
+15V to the switched lug of all Input jacks.
Signal lug of each Input jack to each pot.
Each pot is wired as attenuator.

This is so, with no Inputs connected, it is a basic CV sequencer.
With audio or CV inputs connected, it can sequence between different
waveforms, LFOs, etc.

Hope that helps,
Scott Deyo
The Bridechamber
contact@...
http://www.bridechamber.com
Jealous Edison Record Kompany
http://www.jealousedison.com
Show quoted textHide quoted text
On May 17, 2008, at 7:18 PM, Jeff Laity wrote:

> I'm working on the event sequencer right now using the Bride Chamber
> panel. I don't see in the schematic how the step switches are supposed
> to be wired up, am I missing something? Do they go between the input
> jack and the board?
>
> Also, for wiring pots to this circuit, do they go to the half-normal
> of a Switchcraft 112X jack? I assume if a signal is plugged into the
> input jack that I don't want any additional voltage going to it,
> right?
>
> Thanks.
>
>
>

[Non-text portions of this message have been removed]

Re: Sequencer step switches

2008-05-18 by Jeff Laity

Ideally, the switches would trigger gate signals to a common output.
That way I could have a little tune set up, and individual notes could
be switched in and out. Those gates would go to the envelopes to
trigger notes, and the pitch output would be constant. Would I need a
second CGS board to accomplish this?

I assumed that "ON/OFF STEP" meant a switch to turn that step on or
off. I think the holes were a bit small for LEDs, but just right for
switches.
Show quoted textHide quoted text
On May 17, 2008, at 5:24 PM, Scott Deyo wrote:

> You could use switches between the pots and PCB, connecting to ground
> as the 'off' setting.
> However, I'm not sure how useful that would be in action. I think I
> was
> referring to LEDs, because I can't believe I would forget to leave
> holes for those!
>
> The basic wiring that is not on the CGS site:
> +15V to the switched lug of all Input jacks.
> Signal lug of each Input jack to each pot.
> Each pot is wired as attenuator.
>
> This is so, with no Inputs connected, it is a basic CV sequencer.
> With audio or CV inputs connected, it can sequence between different
> waveforms, LFOs, etc.
>
> Hope that helps,
> Scott Deyo
> The Bridechamber
> contact@...
> http://www.bridechamber.com
> Jealous Edison Record Kompany
> http://www.jealousedison.com
>
> On May 17, 2008, at 7:18 PM, Jeff Laity wrote:
>
> > I'm working on the event sequencer right now using the Bride Chamber
> > panel. I don't see in the schematic how the step switches are
> supposed
> > to be wired up, am I missing something? Do they go between the input
> > jack and the board?
> >
> > Also, for wiring pots to this circuit, do they go to the half-normal
> > of a Switchcraft 112X jack? I assume if a signal is plugged into the
> > input jack that I don't want any additional voltage going to it,
> > right?
> >
> > Thanks.
> >
> >
> >
>

Re: Sequencer step switches

2008-05-19 by lexvortex

Thanks a lot for the photos!! Your sequencer looks good :) I hope
mine will turn out as nice. I want to do the same thing you have done
with the switches and the LEDs.

If I put switches in there it would be so that i could switch off/on a
gate signal coming from a mixed gate out (another hole to drill) and I
wouldn't want the switches to affect the individual gate outs. To get
the mix gate out Scott said I would need a mixer PCB from CGS or MFOS,
which mixer would work best?

I think you'd wire gate outs from the SS PCB to the output jacks on
the panel as normal and then take a lead off each output jack and
attach it to the on/off switch and then attach a wire from the on/off
switch to an input on the mixer and then all the gates will flow to
the mix gate out one at a time? Does that sound reasonable?

This is just my uneducated guess of course... not too sure about the
grounding.

I've written Scott about it too so I'll let you know what he says,
although he will probably answer here too :)
Show quoted textHide quoted text
--- In cgs_synth@yahoogroups.com, Jeff Laity <synthetic@...> wrote:
>
> Ideally, the switches would trigger gate signals to a common output.
> That way I could have a little tune set up, and individual notes could
> be switched in and out. Those gates would go to the envelopes to
> trigger notes, and the pitch output would be constant. Would I need a
> second CGS board to accomplish this?
>
> I assumed that "ON/OFF STEP" meant a switch to turn that step on or
> off. I think the holes were a bit small for LEDs, but just right for
> switches.
>
>
> On May 17, 2008, at 5:24 PM, Scott Deyo wrote:
>
> > You could use switches between the pots and PCB, connecting to ground
> > as the 'off' setting.
> > However, I'm not sure how useful that would be in action. I think I
> > was
> > referring to LEDs, because I can't believe I would forget to leave
> > holes for those!
> >
> > The basic wiring that is not on the CGS site:
> > +15V to the switched lug of all Input jacks.
> > Signal lug of each Input jack to each pot.
> > Each pot is wired as attenuator.
> >
> > This is so, with no Inputs connected, it is a basic CV sequencer.
> > With audio or CV inputs connected, it can sequence between different
> > waveforms, LFOs, etc.
> >
> > Hope that helps,
> > Scott Deyo
> > The Bridechamber
> > contact@...
> > http://www.bridechamber.com
> > Jealous Edison Record Kompany
> > http://www.jealousedison.com
> >
> > On May 17, 2008, at 7:18 PM, Jeff Laity wrote:
> >
> > > I'm working on the event sequencer right now using the Bride Chamber
> > > panel. I don't see in the schematic how the step switches are
> > supposed
> > > to be wired up, am I missing something? Do they go between the input
> > > jack and the board?
> > >
> > > Also, for wiring pots to this circuit, do they go to the half-normal
> > > of a Switchcraft 112X jack? I assume if a signal is plugged into the
> > > input jack that I don't want any additional voltage going to it,
> > > right?
> > >
> > > Thanks.
> > >
> > >
> > >
> >
>

Re: Sequencer step switches

2008-05-19 by Jan-Ahrent Czmok

On 19.05.2008, at 04:36, lexvortex wrote:
Show quoted textHide quoted text
>
>
> If I put switches in there it would be so that i could switch off/on a
> gate signal coming from a mixed gate out (another hole to drill) and I
> wouldn't want the switches to affect the individual gate outs. To get
> the mix gate out Scott said I would need a mixer PCB from CGS or MFOS,
> which mixer would work best?
>
>

Actually, i have built the sequential switch as well, but have some
issues (which we all might be able to clear out).

a)
Regarding the board:

- you need a glide board from him in order to get glide working.
- then you need to cut a trace and "insert" the glide module in the
signal path
- MIX OUT is already on the board.

--> i still have some issues with it. will debug on this tomorrow.

b)

according to scott (and me):

> - what is the channel flow for the input ? (incorporating the on/off
> switch) ?
> - also according to ken "each input could be fed by a pot wired as a
> voltage divider, with it's input end normalized to +VE via a 1k
> resistor."
>
> (so : left input = +VE via 1K trans? wiper to on/off switch and
> then to the pcb input ? right input to where ?)


"
+VE via 1K to all switched lug of all jacks. Each jack goes to left
side of each pot. Right side of each pot to ground. Wiper of each pot
to bottom lug of each switch. Top lug of each switch to ground. Middle
lug of each switch to PCB input.

This way, with no inputs jacks used, it is a typical sequencer. Insert
CVs or audio and you can sequence them instead. The switches would
probably be used more with audio, or at audio rates."

hope that helps

jan

Re: Sequencer step switches

2008-05-19 by Jeff Laity

What is the output of the gate jack look like? Is it a pulse once
every cycle, and the rest of the time it's 0V? If that's the case, why
would you need a mixer to mix them together? It seems like you could
just go from the gate out jack to the switch, switch to a common
output. Unless each of those needed some sort of buffer to mix
together? The LED should protect the chip from voltage from other
channels getting back to the chip, I assume. You might need an
additional diode to sum them together so that the pulse signal doesn't
confuse the length switch. Otherwise, you might use the mixer/inverter:

http://www.cgs.synth.net/modules/cgs70_mix.html

These could all mix down to the inverted output jack, and you could
use another module when you need an inverted out.
Show quoted textHide quoted text
On May 18, 2008, at 7:36 PM, lexvortex wrote:

> If I put switches in there it would be so that i could switch off/on a
> gate signal coming from a mixed gate out (another hole to drill) and I
> wouldn't want the switches to affect the individual gate outs. To get
> the mix gate out Scott said I would need a mixer PCB from CGS or MFOS,
> which mixer would work best?
>
> I think you'd wire gate outs from the SS PCB to the output jacks on
> the panel as normal and then take a lead off each output jack and
> attach it to the on/off switch and then attach a wire from the on/off
> switch to an input on the mixer and then all the gates will flow to
> the mix gate out one at a time? Does that sound reasonable?
>
> This is just my uneducated guess of course... not too sure about the
> grounding.



[Non-text portions of this message have been removed]

Re: Sequencer step switches

2008-05-19 by Scott Deyo

I don't know what I was thinking, but I'll go with -- "Yeah, that was
it!"

But yeah, you can common all the gates together to new ("Gate Out"?)
jack, post-switches.
I did say something about a mixer before, but Jeff is right.

Sorry this panel has been so messed up!

Cheers,
Scott Deyo
The Bridechamber
contact@...
http://www.bridechamber.com
Jealous Edison Record Kompany
http://www.jealousedison.com
Show quoted textHide quoted text
On May 18, 2008, at 7:52 PM, Jeff Laity wrote:

> Ideally, the switches would trigger gate signals to a common output.
> That way I could have a little tune set up, and individual notes could
> be switched in and out. Those gates would go to the envelopes to
> trigger notes, and the pitch output would be constant. Would I need a
> second CGS board to accomplish this?
>
> I assumed that "ON/OFF STEP" meant a switch to turn that step on or
> off. I think the holes were a bit small for LEDs, but just right for
> switches.
>
> On May 17, 2008, at 5:24 PM, Scott Deyo wrote:
>
> > You could use switches between the pots and PCB, connecting to
> ground
> > as the 'off' setting.
> > However, I'm not sure how useful that would be in action. I think I
> > was
> > referring to LEDs, because I can't believe I would forget to leave
> > holes for those!
> >
> > The basic wiring that is not on the CGS site:
> > +15V to the switched lug of all Input jacks.
> > Signal lug of each Input jack to each pot.
> > Each pot is wired as attenuator.
> >
> > This is so, with no Inputs connected, it is a basic CV sequencer.
> > With audio or CV inputs connected, it can sequence between different
> > waveforms, LFOs, etc.
> >
> > Hope that helps,
> > Scott Deyo
> > The Bridechamber
> > contact@...
> > http://www.bridechamber.com
> > Jealous Edison Record Kompany
> > http://www.jealousedison.com
> >
> > On May 17, 2008, at 7:18 PM, Jeff Laity wrote:
> >
> > > I'm working on the event sequencer right now using the Bride
> Chamber
> > > panel. I don't see in the schematic how the step switches are
> > supposed
> > > to be wired up, am I missing something? Do they go between the
> input
> > > jack and the board?
> > >
> > > Also, for wiring pots to this circuit, do they go to the
> half-normal
> > > of a Switchcraft 112X jack? I assume if a signal is plugged into
> the
> > > input jack that I don't want any additional voltage going to it,
> > > right?
> > >
> > > Thanks.
> > >
> > >
> > >
> >
>
>
>

[Non-text portions of this message have been removed]

Re: Sequencer step switches

2008-05-19 by adaaxs

You got a catalog # for that big reset switch.
Show quoted textHide quoted text
> On 19.05.2008, at 04:36, lexvortex wrote:
>
> >
> >
> > If I put switches in there it would be so that i could switch off/on a
> > gate signal coming from a mixed gate out (another hole to drill) and I
> > wouldn't want the switches to affect the individual gate outs. To get
> > the mix gate out Scott said I would need a mixer PCB from CGS or MFOS,
> > which mixer would work best?
> >
> >
>
> Actually, i have built the sequential switch as well, but have some
> issues (which we all might be able to clear out).
>
> a)
> Regarding the board:
>
> - you need a glide board from him in order to get glide working.
> - then you need to cut a trace and "insert" the glide module in the
> signal path
> - MIX OUT is already on the board.
>
> --> i still have some issues with it. will debug on this tomorrow.
>
> b)
>
> according to scott (and me):
>
> > - what is the channel flow for the input ? (incorporating the on/off
> > switch) ?
> > - also according to ken "each input could be fed by a pot wired as a
> > voltage divider, with it's input end normalized to +VE via a 1k
> > resistor."
> >
> > (so : left input = +VE via 1K trans? wiper to on/off switch and
> > then to the pcb input ? right input to where ?)
>
>
> "
> +VE via 1K to all switched lug of all jacks. Each jack goes to left
> side of each pot. Right side of each pot to ground. Wiper of each pot
> to bottom lug of each switch. Top lug of each switch to ground. Middle
> lug of each switch to PCB input.
>
> This way, with no inputs jacks used, it is a typical sequencer. Insert
> CVs or audio and you can sequence them instead. The switches would
> probably be used more with audio, or at audio rates."
>
> hope that helps
>
> jan
>

Re: Sequencer step switches

2008-05-19 by adaaxs

You got a catalog # for that big reset switch.
Show quoted textHide quoted text
> On 19.05.2008, at 04:36, lexvortex wrote:
>
> >
> >
> > If I put switches in there it would be so that i could switch off/on a
> > gate signal coming from a mixed gate out (another hole to drill) and I
> > wouldn't want the switches to affect the individual gate outs. To get
> > the mix gate out Scott said I would need a mixer PCB from CGS or MFOS,
> > which mixer would work best?
> >
> >
>
> Actually, i have built the sequential switch as well, but have some
> issues (which we all might be able to clear out).
>
> a)
> Regarding the board:
>
> - you need a glide board from him in order to get glide working.
> - then you need to cut a trace and "insert" the glide module in the
> signal path
> - MIX OUT is already on the board.
>
> --> i still have some issues with it. will debug on this tomorrow.
>
> b)
>
> according to scott (and me):
>
> > - what is the channel flow for the input ? (incorporating the on/off
> > switch) ?
> > - also according to ken "each input could be fed by a pot wired as a
> > voltage divider, with it's input end normalized to +VE via a 1k
> > resistor."
> >
> > (so : left input = +VE via 1K trans? wiper to on/off switch and
> > then to the pcb input ? right input to where ?)
>
>
> "
> +VE via 1K to all switched lug of all jacks. Each jack goes to left
> side of each pot. Right side of each pot to ground. Wiper of each pot
> to bottom lug of each switch. Top lug of each switch to ground. Middle
> lug of each switch to PCB input.
>
> This way, with no inputs jacks used, it is a typical sequencer. Insert
> CVs or audio and you can sequence them instead. The switches would
> probably be used more with audio, or at audio rates."
>
> hope that helps
>
> jan
>

Re: Sequencer step switches

2008-05-19 by Jeff Laity

On May 19, 2008, at 12:35 PM, adaaxs wrote:
Show quoted textHide quoted text
> You got a catalog # for that big reset switch.
>
Digikey EG1938-ND

Common MOTM-compatible parts are on this site:

http://www.hotrodmotm.com/parts_list.htm

I might not have gone with the red switch in retrospect.



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Re: Sequencer step switches

2008-05-20 by adaaxs

--- In cgs_synth@yahoogroups.com, "adaaxs" <wonggster@...> wrote:
Show quoted textHide quoted text
>
> You got a catalog # for that big reset switch.
>
>
Mouser #

612-RP3502MA-RED
612-RP3502MA-BLK
612-RP3502MA-YEL
612-RP3502MA-GRN

it is 17mm =0.6629134" (inches)

I have been looking for this damm switch for a month

best
gw

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