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 Forum index » DIY Hardware and Software » Circuit Bending
sh 1000
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the19thbear



Joined: Apr 19, 2007
Posts: 112
Location: denmark

PostPosted: Tue May 01, 2007 6:31 am    Post subject:  sh 1000
Subject description: help me read the schematic!!! an di will love you forever
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hi... did anyone ever hack the the roland sh1000 and add vcf audio input?

i have a partial schematic... ´i'm not clever enough to read it and find out where the signal from the vco/noise, goes into the filter section... i could hack it right there and add an audio input...
i would love you forever and name my kids after you if you could help me!! Shocked Shocked

thanks


SH1000-Gate.jpg
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this is at least some of the sh1000... is it enough??
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SH1000-Gate.jpg


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dannicool11



Joined: Apr 12, 2007
Posts: 22
Location: Iceland
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PostPosted: Wed May 16, 2007 7:51 am    Post subject: Reply with quote  Mark this post and the followings unread

noone wants a kid named after him self ? Very Happy Cool
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a.b.o.z.



Joined: Feb 07, 2007
Posts: 350
Location: Zagreb, Croatia
Audio files: 7
G2 patch files: 4

PostPosted: Wed May 16, 2007 1:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

try finding where signal goes in and out usig audio probe Smile
http://www.diystompboxes.com/pedals/debug.html
thats how i fing errors in pedals finding components that don't work. twidle filter and make your way thru board and listen when filter kicks in...or out Smile
hope it helps
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ian-s



Joined: Apr 01, 2004
Posts: 2575
Location: Auckland, New Zealand
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PostPosted: Wed May 16, 2007 3:20 pm    Post subject: Re: sh 1000
Subject description: help me read the schematic!!! an di will love you forever
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the19thbear wrote:
this is at least some of the sh1000... is it enough??


Looks like LFO, Envelope, noise and PSU, so not the bit your after sorry.
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ickystay



Joined: Nov 15, 2006
Posts: 139
Location: Oregon

PostPosted: Fri May 18, 2007 3:22 am    Post subject: Reply with quote  Mark this post and the followings unread

Here's the filter.


pg05vcf.gif
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the19thbear



Joined: Apr 19, 2007
Posts: 112
Location: denmark

PostPosted: Mon May 21, 2007 1:26 am    Post subject: FINALLY
Subject description: OH YEAH!
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WELL!!! it looks like my first kid will be called ICKYSTAY. THANK YOU SO MUCH!!!!! Shocked Shocked Shocked
thank you thank you.
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the19thbear



Joined: Apr 19, 2007
Posts: 112
Location: denmark

PostPosted: Wed Jun 20, 2007 1:47 pm    Post subject: ok
Subject description: ok
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so i put a mic signal through my mixer, fed the hot signal through pin 7, and the other to ground...and said 123 testing in the mic.
first of all, the input had to be amazingly high before i could hear anything coming into the filter.
second: it was distorted like.....crap! not normal distortion... cant explain it.
i did get som minimal filtereing when i was playing around wiht the freq and Q on the synth...
any ideas?

thanks!
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ickystay



Joined: Nov 15, 2006
Posts: 139
Location: Oregon

PostPosted: Sat Jun 23, 2007 3:22 am    Post subject: Reply with quote  Mark this post and the followings unread

Danm. That's the kind of signal I would have expected to work. Mine is dead so I can't fool around and see if I can find anything helpful.

Maybe post on the Synth DIY part of this site and see if any of those guys have any advice.
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autoprod



Joined: Jul 21, 2005
Posts: 17
Location: Oslo, Norway

PostPosted: Thu Oct 18, 2007 1:50 am    Post subject: Reply with quote  Mark this post and the followings unread

Late reply for (poor) reference:

Pin 7 on the VCF-board should work just fine (Unless my memory really has caved in) - I didn't test it with a mike, but I presume that would give a really low input. Instead I used a (rather too) strong audio (synth) signal which worked just fine. If I was to patch this out permanently, I would have put some protection to prevent overloading, though, (Something like a small resistor and a fit zener-diode to ground.) or an input amplifier with limiter.

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