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 Forum index » DIY Hardware and Software
DRUMMACHINE & SEQUENCER
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defog



Joined: Aug 24, 2011
Posts: 113
Location: Philadelphia
PostPosted: Fri Mar 02, 2012 6:53 am    Post subject: Reply with quote  Mark this post and the followings unread
VanaVara wrote:
---maybe i could open its case and somehow connect its keyboard to control my VCOs and stuff?


You can add a CV Out jack to it to control your other gear pretty easily if it doesn't already have one by just tapping into the exponential 1v/Oct converter.... unless it is hz based.
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mrmrshoes



Joined: Feb 19, 2011
Posts: 73
Location: Newcastle Upon Tyne
Audio files: 4
PostPosted: Fri Mar 02, 2012 7:04 am    Post subject: Reply with quote  Mark this post and the followings unread
you need a dual power source
MFOS is a good resource

two batterys - well handy for testing things out.
http://www.musicfromouterspace.com/forums.html?MAINTAB=SYNTHDIY&PROJARG=ELECTRONICS/twoninevoltbatteries.html&VPW=1363&

if you are going to build a bunch of circuits you will need something with a bit more beef than 2, 9V batterys,
I recommend rays wall wart power supply to start off with.

http://www.musicfromouterspace.com/forums.html?MAINTAB=SYNTHDIY&PROJARG=WALLWARTSUPPLY/WALLWARTSUPPLY.php&VPW=1363&

they is a stripboard layout on here somewhere. I done a PCB layout with a power distro board if you want that?
The MFOS sound lab mini synth is a great project to start out on dual supply circuits.
I breadboarded and built the VCO,VCA,VCF,Noise,EG.
Going to make a patched out version.


As for the keyboard Ray has circuits for that aswell (looks a bit involved)

http://www.musicfromouterspace.com/forums.html?MAINTAB=SYNTHDIY&PROJARG=SINGLEBUSSKEYBOARD2007/SINGLEBUSSKEYBOARD2007.php&VPW=1363&VPH=517

I also got an organ for parts, but haven't time to sort it out.
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