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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Yay I got sound but the sounds seem to trigger themselves.
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radfaraf



Joined: May 02, 2005
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Location: USA

PostPosted: Tue May 24, 2005 8:16 pm    Post subject: Yay I got sound but the sounds seem to trigger themselves. Reply with quote  Mark this post and the followings unread

I got mine constructed enough for sound finally. Very Happy
When I turn on my mini-synth I get the sounds triggered every few seconds. I will get a sound that lasts a few seconds, stops and then a few seconds later a sound again. Seems to be triggering without me connecting the two wires I have for trigger (they aren't wired to a button yet). Could having the repeat feature on cause this? I tried having it both on and off, doesn't appear to change anything. The sound seems to keep coming back forever without any action on my part.
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lanxe



Joined: Feb 24, 2005
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Location: Columbus, OH - Now Carson City NV

PostPosted: Thu May 26, 2005 7:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

check that you didnt jump any traces on the pcb.........if you short out anything on the bottom you might get some crazy reactions.

i have made a few mistakes with the wiring before and while the sound lab still makes sounds it is definitely not functioning as designed. after finding my faults (just wires going to the wrong place), the synth worked great.

Hope this helps. just check and check again!

Ryan
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v-un-v
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PostPosted: Fri May 27, 2005 4:22 am    Post subject: Reply with quote  Mark this post and the followings unread

lanxe wrote:
check that you didnt jump any traces on the pcb.........if you short out anything on the bottom you might get some crazy reactions.


Circuit bending anyone?

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radfaraf



Joined: May 02, 2005
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PostPosted: Fri May 27, 2005 9:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

v-un-v wrote:
lanxe wrote:
check that you didn't jump any traces on the pcb.........if you short out anything on the bottom you might get some crazy reactions.


Circuit bending anyone?

Yeah but we don't want accidental circuit bending. Mad I think I'm going to rewire this, I used really poor wires that are 22 gauge and one strand of copper only. They are super unflexible so I can't even try to work with it to figure something out. Need to get more flexible wires first.
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mosc
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PostPosted: Sat May 28, 2005 9:22 am    Post subject: Reply with quote  Mark this post and the followings unread

Good idea to replace the solid copper wires. Even when they make good connections they are dangerous because they can break, sometimes inside the insolation. When this happens, it's really hard to identify the problem because everything looks right.
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lanxe



Joined: Feb 24, 2005
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Location: Columbus, OH - Now Carson City NV

PostPosted: Sat May 28, 2005 9:36 am    Post subject: Reply with quote  Mark this post and the followings unread

mosc wrote:
Good idea to replace the solid copper wires. Even when they make good connections they are dangerous because they can break, sometimes inside the insolation. When this happens, it's really hard to identify the problem because everything looks right.



yep,
i learned that the hard way.......the first minisynth i put together in a super tight box i used solid core wire......it was pretty flexible but i was still having problems with it.
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mosc
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PostPosted: Sat May 28, 2005 10:07 am    Post subject: Reply with quote  Mark this post and the followings unread

Hee hee... I learned that one the hard way too... Laughing
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radfaraf



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PostPosted: Sun May 29, 2005 2:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

Quick questioned about wires. What does "UL" and "Recognized" mean in reference to a wire type. Almost all the wire types they sell at radio shack have that in the name.
http://www.radioshack.com/category.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F011%5F010%5F003%5F000&Page=1
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Blue Hell
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PostPosted: Sun May 29, 2005 3:18 pm    Post subject: Reply with quote  Mark this post and the followings unread

UL recognized, interesting question I thought and so I typed it into Google which resulted in about half a milion hits. http://database.ul.com/grcinterfro_00-1-frnt.pdf , one the links popping up explains it all, well almost.

Jan.
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mosc
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PostPosted: Sun May 29, 2005 5:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

UL stands for Underwriters Laboratory, an industrial research lab run by the insurance industry. It sets safety standards for many electrical components. In the USA, you can't get insurance if your house hasn't been built according to the building code (local building laws). Most codes require UL approved wires, sockets, switches, etc.
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