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trav
Joined: Sep 11, 2012 Posts: 108 Location: Auckland
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Posted: Thu Jan 14, 2016 11:30 pm Post subject:
modular perfboard lunetta |
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I've been dreaming up a perfboard lunetta for a while and have finally started building the modules, so thought I'd document it here.
First the enclosure. It fits eleven boards, five along each of the top two rows and one more bottom right, which will be my "modules". If I build more I can swap them in and out as required (or just build another box!). For the interconnect I'll use pin headers; you can see my bundle of female-female cables in the leftmost storage compartment in the bottom row. The rightmost compartment holds the wall wart that will power everything. In the center there's a handy breadboard which flips up; underneath I keep jumpers for adjacent pins and jumper wire for the breadboard.
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Last edited by trav on Fri Jan 15, 2016 3:56 am; edited 1 time in total |
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trav
Joined: Sep 11, 2012 Posts: 108 Location: Auckland
Audio files: 16
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trav
Joined: Sep 11, 2012 Posts: 108 Location: Auckland
Audio files: 16
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Posted: Wed Jan 20, 2016 2:20 am Post subject:
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4067 16-step sequencer
The four-bit binary count top left determines which channel is active. Next to it is an inhibit pin, and then the common input/output. The top row of each double row of 16 pins is connected to the mux channels so can be used as a standard mux. The main usage I envisage, though, is as a drum sequencer: you set up your pattern with jumpers and feed a trigger into the common input, then you can get four different trigger patterns at the single pins on the end of each row.
Stupidly I did not realise I would need the diodes to prevent the four patterns interacting until I had built it, so I'll need to fix this when I get some more 1N4148s. Alternatively the pattern rows could be female headers and I could use diodes instead of jumpers...
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
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trav
Joined: Sep 11, 2012 Posts: 108 Location: Auckland
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trav
Joined: Sep 11, 2012 Posts: 108 Location: Auckland
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MusicMan11712
Joined: Aug 08, 2009 Posts: 1082 Location: Out scouting . . .
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Posted: Sun Jul 03, 2016 8:00 am Post subject:
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I don't really build anything, but I am enjoying following your progress here. I do enjoy reading easy-to-follow projects, like the ones you have posted so far. Also, I like the case; it seems portable and handy.
Steve |
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trav
Joined: Sep 11, 2012 Posts: 108 Location: Auckland
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trav
Joined: Sep 11, 2012 Posts: 108 Location: Auckland
Audio files: 16
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trav
Joined: Sep 11, 2012 Posts: 108 Location: Auckland
Audio files: 16
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