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 Forum index » DIY Hardware and Software
Trailer Trash 808
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elmegil



Joined: Mar 20, 2012
Posts: 1535
Location: Chicago
Audio files: 14

PostPosted: Sat Apr 27, 2013 10:38 pm    Post subject: Trailer Trash 808
Subject description: work in progress...
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So I was thinking I could get a sort-of 808 running faster if I didn't have to worry about a microprocessor based sequencer. I had built the Baby-8 and gotten it working, so I took its individual gates and ran them to a DB9 (save major surgery and 8 jacks). I then connected that (had to build custom cables, somewhere I missed that standard serial cables only have 5 conductors) to a custom trigger matrix box. The trigger matrix does two things; converts all the gates to triggers, and routes them to rows of switches (one for each gate step). All the on switches for that step send a trigger out, which I intend to hook up to another box housing my various 808 voice circuits. Right now I only have enough switches to do bass drum and snare.

All this is built in separate ad-hoc cigar boxes and similar things, hence "trailer trash 808" (and I can lay claim to the title having lived in trailers the first five years of my life Smile ).

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piedwagtail



Joined: Apr 15, 2006
Posts: 165
Location: shoreditch
Audio files: 1

PostPosted: Tue Apr 30, 2013 10:28 am    Post subject: Reply with quote  Mark this post and the followings unread

You liar, that's Gameform period Joey Beltram!

https://www.youtube.com/watch?v=Yp-i_Jeo4fs

Great! Rock solid timing!
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elmegil



Joined: Mar 20, 2012
Posts: 1535
Location: Chicago
Audio files: 14

PostPosted: Thu May 09, 2013 5:10 am    Post subject: Reply with quote  Mark this post and the followings unread

Brief update, not ready to post pictures yet....

I have a MFOS WW Power Supply to provide +/- 15V and +5V for everything (need the 5V for the accent circuitry). Accent circuit is built and tested successfully, a simple mixer is built, and I've started with the necessary holes in the box. I'm ready to glue down the support boards (PS/Accent/Mixer), and then get started with the voice boards I already have.... which I think will be one of the bigger challenges for the voice box, making sure I line them up with sufficient space etc.

I need 100 switches for the switch matrix, I've come down to likely getting them from Tayda, but have not pushed the button yet....
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LeftyLogic



Joined: Feb 09, 2013
Posts: 9
Location: Paola, KS

PostPosted: Thu May 09, 2013 9:51 am    Post subject: Reply with quote  Mark this post and the followings unread

elmegil wrote:

I need 100 switches for the switch matrix, I've come down to likely getting them from Tayda, but have not pushed the button yet....

Tayda just posted a 15 percent off code on their facebook page, so that might help a bit: https://www.facebook.com/TaydaElectronics
(Also: that's a lot of switches! Shocked )
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elmegil



Joined: Mar 20, 2012
Posts: 1535
Location: Chicago
Audio files: 14

PostPosted: Thu May 09, 2013 10:32 am    Post subject: Reply with quote  Mark this post and the followings unread

List at Tayda would be $47 for the 100, which is better than the (admittedly better quality) switches at mouser which would be $193..... But 15% is good, thanks!
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