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Sequencer (gate, maybe)

Sequencer (gate, maybe)

2007-07-07 by synthwick

Hello,
I've been wanting a sequencer for a long time now, and so I guess it's
finally time to build one. I want a lot of trigger/gate outputs to
control drum sounds, and a couple of rows of CV output.
Would there be any problem in building the gate sequencer w/ two of
the switch boards (so 4 rows of switches) and two of the gate/CV
adapter boards (actually I'd probably just build those w/out the pcb)?

Then my last question, would this be a functional sequencer? Are
there any reasons why this wouldn't be a good idea?

thanks a lot! I almost dished out the money and bought a little
sequencer from Doepfer before I realized what a crazy idea that was!!
I've built a huge synth and never once purchased a completed module.
I don't think I want to get started with that bad habit!

Thanks a lot!

If anyone cares to see my modular, I started a page at
www.sdiy.org/wicked1. Over 1/2 of my modules are CGS and several more
are CGS inspired.
Thanks Ken!

Re: Sequencer (gate, maybe)

2007-07-08 by sasami@hotkey.net.au

It should work fine. Use 100k pots and a single set of buffer transistors.
No need to have a set of buffer transistors per row of pots.

Ken
Show quoted textHide quoted text
>Hello,
>I've been wanting a sequencer for a long time now, and so I guess it's
>finally time to build one. I want a lot of trigger/gate outputs to
>control drum sounds, and a couple of rows of CV output.
>Would there be any problem in building the gate sequencer w/ two of
>the switch boards (so 4 rows of switches) and two of the gate/CV
>adapter boards (actually I'd probably just build those w/out the pcb)?
>
>Then my last question, would this be a functional sequencer? Are
>there any reasons why this wouldn't be a good idea?
>
>thanks a lot! I almost dished out the money and bought a little
>sequencer from Doepfer before I realized what a crazy idea that was!!
> I've built a huge synth and never once purchased a completed module.
> I don't think I want to get started with that bad habit!
>
>Thanks a lot!
>
>If anyone cares to see my modular, I started a page at
>www.sdiy.org/wicked1. Over 1/2 of my modules are CGS and several more
>are CGS inspired.
>Thanks Ken!
>
>
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>
>Yahoo! Groups Links
>
>
>
>
_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

Re: Sequencer (gate, maybe)

2007-07-08 by Jason Proctor

i was thinking of getting a sequencer started soon too. after looking
around this is what i kinda decided on --

- minimal cgs28 module containing just the basics - clock in/out,
reset jack/switch, up/down jack/switch, master (mix) gate out,
cascade in/out (custom add-on), LEDs, 8 gate enable/disable switches,
and then the individual 8 gate outputs on a multipin connector like
an MTA or (maybe better) DIN plug.

- individual gate module containing the multipin input and 8 gate
outputs. the gate enable/disable switches could go on here too.

- cgs42 containing the multipin input, 8 CV pots, mix CV in and out.

breaking stuff out like this means you can have multiple channels of
basic "drum sequencing" using just the minimal switch module. then if
you need 8 discrete gate outs or CV stuff you build the breakout
modules. i reckon you could get 4 minimal switch modules in 3U,
retaining all the discrete interface stuff (maybe normalised so that
one clock in drives all, etc) and that's a 4x8, 2x16, or 1x32 drum
sequencer for cheap.

the only hack required really is the cascade support on the cgs28.
the 4516 supports it, just need to cut the trace grounding the
cascade in pin and wire the in & out pins to a cgs56 board having
input comparators and output buffering etc.
Show quoted textHide quoted text
>It should work fine. Use 100k pots and a single set of buffer transistors.
>No need to have a set of buffer transistors per row of pots.
>
>Ken
>

Re: Sequencer (gate, maybe)

2007-07-08 by peng3002

--- In cgs_synth@yahoogroups.com, "synthwick" <synthwick@...> wrote:
Show quoted textHide quoted text
>
> Then my last question, would this be a functional sequencer?

I love my gate sequencer. I built it pretty much stock. I'm going to
modularize one similar to what Jason describes in his post. At the
moment, when I need it to be a CV sequencer I patch the gate outs into
a mixer. Works great but takes a lot of patch cords.

I find the switches section to be the most interesting. You can have
the full length high or a high that lasts half the clock cycle.
EXTREMELY useful!!!!!!!
Ken, is this idea original to you? I have never seen another sequencer
that does this. Very cool.

p.

Re: Sequencer (gate, maybe)

2007-07-08 by Jason Proctor

another optimisation i was thinking of was that you could effectively
get extra "slaved" gate sequence tracks just by feeding the clock
into the gate output module.

effectively you would have a "gate mix" input, which would be ORed
with the multipin inputs, feeding the gate enable/disable switch. add
a gate mix output, and there you go.

slight issue is that it would only follow the up/down/reset behaviour
if you drove it off the multipin. but then, chaos is often fun.
modular sequencers, yay.
Show quoted textHide quoted text
>--- In cgs_synth@yahoogroups.com, "synthwick" <synthwick@...> wrote:
>>
>> Then my last question, would this be a functional sequencer?
>
>I love my gate sequencer. I built it pretty much stock. I'm going to
>modularize one similar to what Jason describes in his post. At the
>moment, when I need it to be a CV sequencer I patch the gate outs into
>a mixer. Works great but takes a lot of patch cords.
>
> I find the switches section to be the most interesting. You can have
>the full length high or a high that lasts half the clock cycle.
>EXTREMELY useful!!!!!!!
>Ken, is this idea original to you? I have never seen another sequencer
>that does this. Very cool.
>
>p.

Re: Sequencer (gate, maybe)

2007-07-09 by synthwick

I was going to build one gate seq. and have two switch boards on it (4
rows), but have now decided to build 2 complete gate sequencers (w/
the gates and CV's on each) and that way I can run each off a
different division of the clock if I want.

It was tough to decide between the seq. switch or the gate seq. I may
have to eventually build the seq. switch, because I would like the
ability to.. well.. sequentially switch things :).

There's one thing I want to do and I don't know the best way to go
about it. Say I have the VCO being fed from a sample/hold and it's
playing it's little tune. I want to be able to change the octave for
say 4 measures, then back down for four, then up again.
I was thinking about the analog switch (cgs55), but Im not sure how
the switch works. Does it switch on w/ a pulse, then back off w/
another pulse, or does it switch on while it has a gate, then back off
when the gate is removed? (I'd feed 1v into the input of the switch,
send a division of the clock to the switch to turn it on and off....
if the switch works in that way)

If that doesn't work, my next idea was to use the sequential switch,
but that would be much less efficient. (as far as parts needed, and
patching complexity)

Am I on the right track with that? I'd also like to use it to switch
on and off triggers going to percussion at different times, but still
in time with the clock, etc.
As soon as I found Ken's work and began to understand it, my interest
in my synth quickly changed from the sounds it can make, to the ways I
can automate it.

Re: Sequencer (gate, maybe)

2007-07-09 by b h

Hi

I was wondering if you happen to be the peng i bought some 1\4 jacks from a
while ago?
If you are i was wondering do you ahve anymore left for sale?

cheers
Brett
Show quoted textHide quoted text
>From: "peng3002" <peng3002@...>
>Reply-To: cgs_synth@yahoogroups.com
>To: cgs_synth@yahoogroups.com
>Subject: [cgs_synth] Re: Sequencer (gate, maybe)
>Date: Sun, 08 Jul 2007 23:58:02 -0000
>
>--- In cgs_synth@yahoogroups.com, "synthwick" <synthwick@...> wrote:
> >
> > Then my last question, would this be a functional sequencer?
>
>I love my gate sequencer. I built it pretty much stock. I'm going to
>modularize one similar to what Jason describes in his post. At the
>moment, when I need it to be a CV sequencer I patch the gate outs into
>a mixer. Works great but takes a lot of patch cords.
>
> I find the switches section to be the most interesting. You can have
>the full length high or a high that lasts half the clock cycle.
>EXTREMELY useful!!!!!!!
>Ken, is this idea original to you? I have never seen another sequencer
>that does this. Very cool.
>
>p.
>

_________________________________________________________________
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Re: Sequencer (gate, maybe)

2007-07-09 by b h

sorry all this wasn't meant to be directed to the group :(

B
Show quoted textHide quoted text
>From: "b h" <bamsyn@...>
>Reply-To: cgs_synth@yahoogroups.com
>To: cgs_synth@yahoogroups.com
>Subject: RE: [cgs_synth] Re: Sequencer (gate, maybe)
>Date: Mon, 09 Jul 2007 13:32:56 +1030
>
>Hi
>
>I was wondering if you happen to be the peng i bought some 1\4 jacks from a
>while ago?
>If you are i was wondering do you ahve anymore left for sale?
>
>cheers
>Brett
>
>
> >From: "peng3002" <peng3002@...>
> >Reply-To: cgs_synth@yahoogroups.com
> >To: cgs_synth@yahoogroups.com
> >Subject: [cgs_synth] Re: Sequencer (gate, maybe)
> >Date: Sun, 08 Jul 2007 23:58:02 -0000
> >
> >--- In cgs_synth@yahoogroups.com, "synthwick" <synthwick@...> wrote:
> > >
> > > Then my last question, would this be a functional sequencer?
> >
> >I love my gate sequencer. I built it pretty much stock. I'm going to
> >modularize one similar to what Jason describes in his post. At the
> >moment, when I need it to be a CV sequencer I patch the gate outs into
> >a mixer. Works great but takes a lot of patch cords.
> >
> > I find the switches section to be the most interesting. You can have
> >the full length high or a high that lasts half the clock cycle.
> >EXTREMELY useful!!!!!!!
> >Ken, is this idea original to you? I have never seen another sequencer
> >that does this. Very cool.
> >
> >p.
> >
>
>_________________________________________________________________
>Advertisement: Crowded House Time on Earth � catch them live in the USA!
>http://ninemsn.com.au/share/redir/adTrack.asp?mode=click&clientID=800&referral=hotmailtagline&URL=http://music.ninemsn.com.au/compIntro.aspx?compId=2416
>
>
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>
>Yahoo! Groups Links
>
>
>

_________________________________________________________________
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Re: Sequencer (gate, maybe)

2007-07-09 by sasami@hotkey.net.au

> I find the switches section to be the most interesting. You can have
>the full length high or a high that lasts half the clock cycle.
>EXTREMELY useful!!!!!!!
>Ken, is this idea original to you? I have never seen another sequencer
>that does this. Very cool.

Yes, it was my original idea.

Ken
_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

Re: Sequencer (gate, maybe)

2007-07-09 by sasami@hotkey.net.au

>I was thinking about the analog switch (cgs55), but Im not sure how
>the switch works. Does it switch on w/ a pulse, then back off w/
>another pulse, or does it switch on while it has a gate, then back off
>when the gate is removed? (I'd feed 1v into the input of the switch,
>send a division of the clock to the switch to turn it on and off....
>if the switch works in that way)

It switchs on while it has a gate, then back off when the gate is removed.

Ken
_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.cgs.synth.net/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

Re: Sequencer (gate, maybe)

2007-07-10 by Andrew Scheidler

One neat ability of the Sequential Switch is to change directions, and the direction is controllable by CV :)

I'm currently up to my nipples in a monster sequencer panel. Hoping to have it together and running in about two weeks...

Drew


synthwick <synthwick@...> wrote:

I was going to build one gate seq. and have two switch boards on it (4
rows), but have now decided to build 2 complete gate sequencers (w/
the gates and CV's on each) and that way I can run each off a
different division of the clock if I want.

It was tough to decide between the seq. switch or the gate seq. I may
have to eventually build the seq. switch, because I would like the
ability to.. well.. sequentially switch things :).

There's one thing I want to do and I don't know the best way to go
about it. Say I have the VCO being fed from a sample/hold and it's
playing it's little tune. I want to be able to change the octave for
say 4 measures, then back down for four, then up again.
I was thinking about the analog switch (cgs55), but Im not sure how
the switch works. Does it switch on w/ a pulse, then back off w/
another pulse, or does it switch on while it has a gate, then back off
when the gate is removed? (I'd feed 1v into the input of the switch,
send a division of the clock to the switch to turn it on and off....
if the switch works in that way)

If that doesn't work, my next idea was to use the sequential switch,
but that would be much less efficient. (as far as parts needed, and
patching complexity)

Am I on the right track with that? I'd also like to use it to switch
on and off triggers going to percussion at different times, but still
in time with the clock, etc.
As soon as I found Ken's work and began to understand it, my interest
in my synth quickly changed from the sounds it can make, to the ways I
can automate it.






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