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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Mfos noise / pan / phaser / more Lfo's / S&H
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Skrog Productions



Joined: Jan 07, 2009
Posts: 788
Location: Scottish Borders
Audio files: 87

PostPosted: Sun Dec 19, 2010 4:57 pm    Post subject: Mfos noise / pan / phaser / more Lfo's / S&H
Subject description: More panel condensing
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Hi Smile

more space needed on the modular , some jobs to do over the holidays....

5 existing modules into 2 modules .... just finished the panel designs in corel draw , ready to take the files to the local sign shop to get vinyl lazer printed stickers done Smile.

Dave.


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John Noble



Joined: Dec 15, 2010
Posts: 15
Location: Sandy Eggo, California

PostPosted: Sun Dec 19, 2010 8:15 pm    Post subject: Re: Mfos noise / pan / phaser / more Lfo's / S&H
Subject description: More panel condensing
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Skrog Productions wrote:

5 existing modules into 2 modules .....


I've seen some of your other very nicely done work, and I have just one question: aren't you worried about your synth collapsing into a black hole? It's getting rather dense!
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Skrog Productions



Joined: Jan 07, 2009
Posts: 788
Location: Scottish Borders
Audio files: 87

PostPosted: Mon Dec 20, 2010 1:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

Smile , It's critical Schwarzschild radius is something to keep an eye on , at the moment it is feeding on a type of accretion disc of pots / resistors & 1/4" sockets & chips emanating from Rapid electronics UK , It's hydrogen core has a few decades of life yet.......Then ...Event horizon.

heh , thanks for having a look Smile.


And heres another squeeze up , my last 2 mfos vcf's to get tarted up from my old original designs...

Dave.


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ashleym



Joined: Aug 20, 2009
Posts: 181
Location: uk

PostPosted: Fri Dec 24, 2010 3:41 pm    Post subject: Reply with quote  Mark this post and the followings unread

Dave,
You always have something going on with your synth and its something interesting. With all the shrinking is it still easy to control or does familiarisation help?

Thanks for posting and keep making the good music
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Skrog Productions



Joined: Jan 07, 2009
Posts: 788
Location: Scottish Borders
Audio files: 87

PostPosted: Wed Dec 29, 2010 4:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi Ashley , still easy to control , wider spaces helped when i was first learning Smile



2 modules finished....

fairly easy job of un-wiring & un-bolting existing modules then reinstating onto new panels , to free up needed space on the system.


Dave.


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Skrog Productions



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PostPosted: Wed Dec 29, 2010 4:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

vcf's... 24dB & 12dB squeezed onto one panel Smile


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Skrog Productions



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Audio files: 87

PostPosted: Sun Jan 02, 2011 7:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

Finished the 4 new lfo's & re-wire of the Sample & hold.

Had a real head scratcher problem with lfo 3 , i had a blue led for rate indicator but was getting strange rhythmic flashing & no speed adjust, using my scope the lfo was working fine but the blue led was giving the square out a rounded edge , put a standard red opaque led in and it works a treat now.

On Rays circuit , (lfo /w skew in oldies but goodies section of diy) , the lfo uses half an LM13700 , so on my vero-board i got 2 - Lm13700's & 4 - TL084's. the suggested 100N hi timer cap was a bit fast for me so i popped in some 330N for high and 2.2uF polyester box cap for low.

Dave.


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Skrog Productions



Joined: Jan 07, 2009
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Location: Scottish Borders
Audio files: 87

PostPosted: Mon Jan 03, 2011 7:59 pm    Post subject: Reply with quote  Mark this post and the followings unread

oooops , the blue led's in an unmarked bag were flashing ones , heh Smile , that's why they caused havoc with the lfo circuit , nevermind , Smile

Finished tonite & calibrated using Ray's calibrator circuit & test meters / scope ..... MFOS Vco's no. 5 & 6 , the last of my bare mfos pcb' up & running , i'm slowly hacking through the backlog Smile Smile


Dave.


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John Noble



Joined: Dec 15, 2010
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PostPosted: Mon Jan 03, 2011 8:59 pm    Post subject: Reply with quote  Mark this post and the followings unread

I've been tracking this, and I think you might want to check in with these guys to see if further consolidation is wise:

http://arxivblog.com/?p=1136

Seriously, nice work.
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Skrog Productions



Joined: Jan 07, 2009
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PostPosted: Sun Jan 09, 2011 4:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

thanks John Very Happy
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