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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Another completed SoundLab! (pics included)
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cds56



Joined: Jan 13, 2011
Posts: 18
Location: Canada

PostPosted: Thu Nov 08, 2012 7:21 pm    Post subject: Another completed SoundLab! (pics included)
Subject description: Finally furnished my minisynth!!
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I started building my minisynth in December 2010(I believe). I populated the PCB, and... well wait one second.

Ray in the kit you sent me you left out ONE cap! a single ceramic cap of a common value which I had, but still. that's a single issue with it.

So I got busy around that time so let's say around 9 months later I cut a crude faceplate from a new aluminum cookie sheet, drill it out, and wire the whole thing based on Ray's schems and faceplate layouts Smile (so easy)
I measured and cut out the box but never assembled it. It was left housed in an old shoebox.
until last weeekend where I did it all in a 36 hour time period !!

Note: as of late, the noise generator has become plagued with immense oscillator 2 bleedthrough and noise that doesn't sound anything like noise!
TL; DR I took two years to do a two week or less project because lazy. am satisfied !

imgur: http://misteralien.imgur.com/all/
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elmegil



Joined: Mar 20, 2012
Posts: 1345
Location: Chicago
Audio files: 14

PostPosted: Thu Nov 08, 2012 11:44 pm    Post subject: Reply with quote  Mark this post and the followings unread

I had a lot of trouble with bleed into the noise; I used the "optional improvements" noise circuit and it went away.

My build's not done yet though Very Happy

Edit: PS your images are not publicly accessiable Smile
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ashleym



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

PostPosted: Fri Nov 09, 2012 5:56 am    Post subject: Reply with quote  Mark this post and the followings unread

I thought the finished synth was just a little.........erm.......dark

http://www.youtube.com/watch?v=wj84tfS7ag4

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cds56



Joined: Jan 13, 2011
Posts: 18
Location: Canada

PostPosted: Fri Nov 09, 2012 1:22 pm    Post subject: Reply with quote  Mark this post and the followings unread

Whoops, I couldnt figure out how to link directly to the album which was public, okay everything is viewable now I hope...

here:
http://imgur.com/a/K3v85

!!
The faceplate needs trimming, and I should takea look at the optional improvement noise circuit...
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elmegil



Joined: Mar 20, 2012
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Audio files: 14

PostPosted: Fri Nov 09, 2012 9:26 pm    Post subject: Reply with quote  Mark this post and the followings unread

Yep, was able to see it now. Thanks!
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cds56



Joined: Jan 13, 2011
Posts: 18
Location: Canada

PostPosted: Sat Nov 17, 2012 12:44 pm    Post subject: help Reply with quote  Mark this post and the followings unread

well apart from the noise gen, I found a little quirk..

When I tap the solder joint for a resistor on the right-top side of the pcb with my finger, it triggers a gate.
What does this mean? my finger is not shorting out any of the other connections..

http://www.youtube.com/watch?v=5ScqhTyZ1i0
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Blue Hell
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Joined: Apr 03, 2004
Posts: 20274
Location: The Netherlands, Enschede
Audio files: 143
G2 patch files: 318

PostPosted: Sat Nov 17, 2012 1:03 pm    Post subject: Re: help Reply with quote  Mark this post and the followings unread

cds56 wrote:
What does this mean?


It probably means that you found a high impedance point there that you are injecting some hum into.

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cds56



Joined: Jan 13, 2011
Posts: 18
Location: Canada

PostPosted: Sat Nov 17, 2012 1:05 pm    Post subject: Reply with quote  Mark this post and the followings unread

would the answer to that be "Stop touching your PCB while the synth is turned on"?

I guess that could make.. sense..
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Blue Hell
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Joined: Apr 03, 2004
Posts: 20274
Location: The Netherlands, Enschede
Audio files: 143
G2 patch files: 318

PostPosted: Sat Nov 17, 2012 2:21 pm    Post subject: Reply with quote  Mark this post and the followings unread

Or don't stop - it won't kill anything likely Wink
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bubzy



Joined: Oct 27, 2010
Posts: 535
Location: United Kingdom
Audio files: 50

PostPosted: Fri Nov 23, 2012 2:15 am    Post subject: Re: help Reply with quote  Mark this post and the followings unread

cds56 wrote:
When I tap the solder joint for a resistor on the right-top side of the pcb with my finger, it triggers a gate.
What does this mean?


It means you have "trigger finger"

a common ailment amongst synth enthusiasts.
and what blue said.

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cds56



Joined: Jan 13, 2011
Posts: 18
Location: Canada

PostPosted: Wed Dec 05, 2012 6:22 pm    Post subject: Reply with quote  Mark this post and the followings unread

Trigger finger! XD that's rather punny...

but I like it, guess I'll keep touching my synth in out of reach places Wink
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