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sneakthief

Joined: Jul 24, 2006 Posts: 569 Location: Berlin
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Posted: Thu Aug 30, 2007 7:43 am Post subject:
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at least with the MIDIbox CV, there's provision for setting the pulse width:
Code: |
The pulsewidth of the clock output can be configured in pieces of 500 uS. By default it's 1 mS:
; 0 -> 500 uS
; 1 -> 1 mS
; 2 -> 1.5 mS
; etc...
#define DEFAULT_EXT_CLK_PULSEWIDTH 1
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A pot (or even a CV!) could be hooked up to one of the PIC's analog inputs to control this pulse width variable. _________________ Sneak-Thief - raw electrofunk |
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Scott Stites
Janitor


Joined: Dec 23, 2005 Posts: 4127 Location: Mount Hope, KS USA
Audio files: 96
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Posted: Thu Aug 30, 2007 7:48 am Post subject:
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Cool! _________________ My Site |
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vtl5c3
Joined: Sep 08, 2006 Posts: 425 Location: PDX
Audio files: 13
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Posted: Thu Aug 30, 2007 8:14 am Post subject:
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Thanks Sneakthief. I wasn't aware that there are problems with the Blacet PIC. Good to know, though.
R. |
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TheAncientOne

Joined: Dec 26, 2006 Posts: 144 Location: United Kingdom
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Posted: Thu Aug 30, 2007 8:45 am Post subject:
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I can endorse the MIDIbox kit too - the sync works well, and it's a tiny board.
The MIDIbox monitor is a cool project in its own right, a good first MIDIbox, and a very useful tool. Cheap too - the core, a 4x20 LCD and a couple of buttons. _________________ Mike |
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fonik

Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Thu Aug 30, 2007 9:26 am Post subject:
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sneakthief wrote: | at least with the MIDIbox CV, there's provision for setting the pulse width:
Code: |
The pulsewidth of the clock output can be configured in pieces of 500 uS. By default it's 1 mS:
; 0 -> 500 uS
; 1 -> 1 mS
; 2 -> 1.5 mS
; etc...
#define DEFAULT_EXT_CLK_PULSEWIDTH 1
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A pot (or even a CV!) could be hooked up to one of the PIC's analog inputs to control this pulse width variable. |
would this require high programming skills? _________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source |
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sneakthief

Joined: Jul 24, 2006 Posts: 569 Location: Berlin
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Posted: Thu Aug 30, 2007 9:45 am Post subject:
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fonik - no, i think it's relatively easy. i'm consulting some gurus right now and will have a solution shortly. it's just a matter of assigning one of the analog inputs to pulse length variable.
if you like, i can compile it and send you the .hex file to upload when it's ready. _________________ Sneak-Thief - raw electrofunk |
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fonik

Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Thu Aug 30, 2007 11:40 am Post subject:
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wow, that's great, sneakthief! thank you very much! highly appreciated. _________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source |
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Clack

Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Posted: Sat Sep 01, 2007 10:46 am Post subject:
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Hi, I was wondering where I could find the schematics for theese projects? are they public? some links seem to be dead that point to them? _________________ Clacktronics.co.uk |
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sneakthief

Joined: Jul 24, 2006 Posts: 569 Location: Berlin
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Clack

Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
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Posted: Sun Sep 02, 2007 3:04 am Post subject:
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no sorry, I mean the klee? _________________ Clacktronics.co.uk |
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Randaleem
Joined: May 17, 2007 Posts: 456 Location: Northern CA, USA
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Posted: Sun Sep 02, 2007 6:22 am Post subject:
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Mr Clack wrote: | no sorry, I mean the klee? |
See the first page of this thread.
Best regards,
Randal |
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Clack

Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Posted: Sun Sep 02, 2007 7:39 am Post subject:
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yes I have tried that. it appears to be missing  _________________ Clacktronics.co.uk |
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THeff

Joined: Sep 01, 2006 Posts: 229 Location: Florida
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THeff

Joined: Sep 01, 2006 Posts: 229 Location: Florida
Audio files: 33
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bugbrand

Joined: Nov 27, 2005 Posts: 846 Location: Bristol, UK
Audio files: 1
G2 patch files: 1
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Scott Stites
Janitor


Joined: Dec 23, 2005 Posts: 4127 Location: Mount Hope, KS USA
Audio files: 96
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Posted: Sun Sep 02, 2007 3:00 pm Post subject:
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Hmmm....a very nice addition indeed!
And the Klee schematics - AAAARRGGGHHHH! I was going to fix the swapped pins on the TL074 sections, then re-upload it, but it's not going to happen in a while (maximum effort going into Klee proto). So, thought I'd upload warty version 3.03, which is quite usable, but it's not on this computer.
Anybody got the 3.03 zip file handy? _________________ My Site |
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a.b.o.z.

Joined: Feb 07, 2007 Posts: 351 Location: Zagreb, Croatia
Audio files: 7
G2 patch files: 4
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Posted: Mon Sep 03, 2007 4:55 am Post subject:
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Scott Stites wrote: | Well, look at his avatar - wouldn't a crown of laurels look good on there?
Anyway, here's a sort of plea for the Klee thread readers: I'm uploading a draft of part of the Klee ops manual. It's the section that attempts to describe what it is the Klee does. This thread is huge, and the information is so scattered throughout, I wonder if what a Klee Sequencer is generally known by more than a few people.
So, this portion covers the basic fundamentals of the Klee pattern generator and gate bus - it stops right at the description of the merge switches (I'm still working on that). There will be a separate operations section (programming the pattern, clocking it) - this section is more along the lines of understanding the underlying nature of the beast.
I certainly would appreciate feedback - is the style too simplistic, unnecessarily technical, confusing? Does it help to clear confusion or serve to inflict it? Please let me know!
Cheers,
Scott
Edit: It probably would have helped to number the pages - I can fix that and upload a numbered version (and fix a couple of minor grammatical errors, and one error right after Figure 22 - it should read "step three selects stages three and seven" not "three and four").
Edit 2: Numbered version uploaded, fixed the figure 22 thing. |
hej Scott. Could you reupload missing "know_the_Klee_draft2.pdf" file? thanx
ivan |
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THeff

Joined: Sep 01, 2006 Posts: 229 Location: Florida
Audio files: 33
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Scott Stites
Janitor


Joined: Dec 23, 2005 Posts: 4127 Location: Mount Hope, KS USA
Audio files: 96
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Posted: Tue Sep 04, 2007 10:29 am Post subject:
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[Edit by Blue Hell : please follow http://radio.electro-music.com/forum/topic-24821.html for the docs]
Actually there was a later draft of "Know the Klee" (rev 3) posted here:
http://electro-music.com/forum/download.php?id=8646
Things are getting pretty scattershot for the Klee Sequencer - I'm going to try to consolidate the info for the electro-music Klee Sequencer PCB project to this thread (which was formerly the original PCB poll, but is now more of a build thread):
http://electro-music.com/forum/topic-19278.html
This thread, which was about the development of the Model 2 Klee, which is essentially the electro-music thread, is going to be unstickied to make room for a new, more useful thread for everybody.
As things progress here, things tend to get lost in the roar of what's going on - I plan to sticky a new directory of projects so that everyone's PCB project can be found easily through all of the threads. I figure this will be handy for those of us that have been here a while, and for new members who may still be coming to grips with what's offered.
Cheers,
Scott _________________ My Site |
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THeff

Joined: Sep 01, 2006 Posts: 229 Location: Florida
Audio files: 33
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Scott Stites
Janitor


Joined: Dec 23, 2005 Posts: 4127 Location: Mount Hope, KS USA
Audio files: 96
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Posted: Tue Sep 04, 2007 10:33 pm Post subject:
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Thanks, Tim!! _________________ My Site |
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Sound
Joined: Jun 06, 2006 Posts: 842
Audio files: 1
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Posted: Sat Feb 21, 2009 3:48 am Post subject:
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Scott Stites wrote: |
One other unrelated note: the gate bus schematic defaults to +5V gates and triggers. That is determined by running the outputs of the LM324s through 3K with 1.5K to ground. This divides the original 15V level to 5V and creates a 1K output impedance, because the 3K and 1.5K are essentially in parallel.
One thing has bugged me about that - not all synths will respond to +5V. Though it's the Electronotes standard, it's not a universal standard. For example, Ray Wilson's EG's will not respond to those levels. This is easily remedied - instead of running the output through 3K with 1.5K to ground, run the output through 1.5K with 3K to ground - IE, swap the two resistors around. The same output impedance is maintained, but now the gates and triggers will be 10V. That's a personal preference decision that can be made at time of build, and I'll note it on the updated schematics, which are coming down the pike. |
Only curious,
Is there any inconvenience, any incompatibility, running the gate trigger outputs at 10V? |
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Scott Stites
Janitor


Joined: Dec 23, 2005 Posts: 4127 Location: Mount Hope, KS USA
Audio files: 96
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Posted: Sat Feb 21, 2009 8:38 am Post subject:
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Well, not with my system. I know the electronotes standard uses 5V gates and triggers, so that's why I put the option in. I seriously don't know if those types of levels would bother anything, or blow anything up, if it was designed for 5V levels. Maybe someone could kick in with more info on that.
BTW, Ray's EGs now do respond to the lower levels. I think I built my MFOS EGs (on proto-board) about 2.5 seconds before he designed some that respond to lower levels.
Cheerios,
Scott _________________ My Site |
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Sound
Joined: Jun 06, 2006 Posts: 842
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Posted: Sat Feb 21, 2009 12:12 pm Post subject:
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Thanks! |
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fonik

Joined: Jun 07, 2006 Posts: 3950 Location: Germany
Audio files: 23
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Posted: Sat Feb 21, 2009 1:20 pm Post subject:
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@sound:
how great you digged the origin klee thread. IMHO it is one of the greatest e-m threads ever! it is such a great example of sharing, collaboration and such from the beginning - outstanding and striking! _________________
cheers,
matthias
____________
Big Boss at fonitronik
Tech Buddy at Random*Source |
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