sequential pro one style sequencer

Clack

Ive been playing with a pro-one ( shamefully the only late 70-80's synthesizer I have been allowed to touch! maybe its because they are afraid I will pull it apart Twisted Evil

)

And I really like the sequencer on it, Its a bit like a midi sequencer, you play notes in and you get notes out ( quantized in equal whole steps mind you ) I looked at the service manual and it doesnt show much, is this just a function of the microprocessor circuit? the only thing I can see that relates to it is the swithes that say "Seq" / "Arp" that all connect to the same point!!

has anyone seen any diy circuits that work in this way? I assume it is a digital circuit with volatile memory. This is just curiosity

intercorni · Joined: Jun 04, 2007 Posts: 69 Location: hamburg

Yes, i like also the ProOne arp and sequencer - its easy to use.

synth_ollie · Joined: Sep 11, 2006 Posts: 149 Location: sweden

no diy that I know of,

if you want the same type of simple and easy to use cv/gate seq, there is roland csq-100 & 600

cheers

OLLIE

Broadwave · Posted: Wed Oct 17, 2007 5:13 am Post subject:

All of the sequencing functions on the Pro- One are handled by the 8021 processor.

I'm pretty sure that either ETI (under the "Trancendent" banner) or Elektor mag did a 1024 step digital sequencer once...

I'll have a dig around the attic and see what info I have.

Andy.

[EDIT]...

... Meanwhile, 45 mins later...

Here ya go, both the ETI and Elektor Sequencer details, sorry about the quality, but that's all I have.

Could be an interesting project though Shocked

Elektor Seq.pdf

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Download (listen)

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Elektor Seq.pdf

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187.16 KB

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340 Time(s)

ETI Sequencer.pdf

Description:

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ETI Sequencer.pdf

Filesize:

6.6 MB

Downloaded:

631 Time(s)

Clack · Posted: Wed Oct 17, 2007 1:17 pm Post subject:

amazing, thanks , very interesting. Not the same but just as interesting. I suppose something like this would be achieved very easily ( and less parts! ) with a stamp, PIC or AVR.

amos_joseph · Joined: May 09, 2005 Posts: 50 Location: Lincoln, NE

I'm actually working on a digital sequencer for my modular using a PIC and the D/A conversion section from the TB-303. Fairly low parts count as far as analog sequencers go, but the coding is definitely not for the faint of heart. Getting a simple sequencer program up and running wasn't much work, but implementing MIDI I/O and getting sync working has been a little frustrating.

crazeydazey · Posted: Thu Oct 18, 2007 1:32 am Post subject:

amos_joseph · Joined: May 09, 2005 Posts: 50 Location: Lincoln, NE

EdisonRex · Posted: Thu Oct 18, 2007 6:56 am Post subject:

I'd like to see the MIDI Clock to pulse clock conversion. That'd be a cool clock module on its own.

crazeydazey · Posted: Thu Oct 18, 2007 7:03 am Post subject:

EdisonRex · Posted: Thu Oct 18, 2007 7:24 am Post subject:

Well, yeah, or this too.

I keep wondering if there's an easier way to mask the clock signals (F Cool

from the stream, and divide them. hmm. Like with a register or something.

crazeydazey · Posted: Thu Oct 18, 2007 7:34 am Post subject:

yeah, I've also found this, bit you can't control the midi channel, but I suppose if anyone knows a bit of PIC programming, they could figure something out by looking at the code...

EdisonRex · Posted: Thu Oct 18, 2007 8:55 am Post subject:

And then I realise in the middle of this I have one of these things and I owe myself a head-desk-slam because look at that clock output. Doh!

We now return to the original topic.

crazeydazey · Posted: Fri Oct 19, 2007 12:56 am Post subject:

filterstein · Joined: Mar 17, 2007 Posts: 42 Location: The Netherlands

If you got programming skills for a pic, you should try to start from MIOS.
That way all the midi coding is already done for you, you should be able to focus on programming the app itself.
There are midi functions available in assembler or c
Check this:
http://ucapps.de/mios_fun.html
http://ucapps.de/mios_c.html
http://www.midibox.org/forum/forums.html?topic=5080.0

crazeydazey · Posted: Mon Oct 22, 2007 2:13 am Post subject:

it all looks chinese to me, and the best bit is.. I am a software developer, that what I do for a living, but I can't get my head around this stuff at all, I wish I could. Crying or Very sad

why can't someone invent a programmer that accepts VB.net

amos_joseph · Joined: May 09, 2005 Posts: 50 Location: Lincoln, NE

crazeydazey · Posted: Tue Oct 23, 2007 3:59 am Post subject:

it would be cool if there was a PIC forum on this site, to share PIC circuits and code (music related obviously, not really intrested in making flashing LED circuits)

any chance moderators...???

blue hell · Posted: Tue Oct 23, 2007 5:08 am Post subject:

crazeydazey · Posted: Tue Oct 23, 2007 5:38 am Post subject:

cool

Tim Servo · Posted: Wed Oct 24, 2007 10:25 am Post subject:

amos_joseph · Joined: May 09, 2005 Posts: 50 Location: Lincoln, NE

crazeydazey · Posted: Thu Oct 25, 2007 12:56 am Post subject:

ooooooh want one Very Happy

crazeydazey · Posted: Tue Oct 30, 2007 8:53 am Post subject:

Is anything happening with new forum???

I like Blue Hells Idea "Embedded Controller" and no one else has objected..

Could it be the one???

blue hell · Posted: Tue Oct 30, 2007 2:31 pm Post subject: