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Post by rodney on Dec 28, 2020 10:42:26 GMT
Turning the bus lines into general global passive mults. Works fine for me for control voltages. I have not tried sending audio signals along it though... 1. make a ribbon connector cable long enough to go from Master to the Male header in the left side of the case.
2. separate the top four strands from the rest (to retain the 5v and GND). On the AE ribbon, this is the red one, plus the next three. Don't cut them!
3. cut the lower strands to sever all the bus lines (or carefully select just the ones you want to cut)
4. replace the existing ribbon with the new improved one. Check here to make sure you cut the right ones! The cut ones will be toward the bottom of the Master Module when it is connected and mounted in the rack.
5. now you must explicitly connect up anything you want to run along the bus wires, but you can use them for anything now. There are a few cons. It would be nice to have some extra mults, maybe a tiny breadboard connector for breaking out the buses more neatly. Maybe one of these little breadboard things?
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Post by solipsistnation on Dec 30, 2020 1:37:06 GMT
So when you say "the four top strands," would that be the red on a non-rainbowy cable and the 3 greys next to it? I have a spare grey cable, but "top" and "bottom" are kind of ambiguous.
(I think we talked about it in Discord, but for people who weren't in on that or who don't have their own ribbon cable connector presses...)
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Post by rodney on Dec 31, 2020 0:45:24 GMT
So when you say "the four top strands," would that be the red on a non-rainbowy cable and the 3 greys next to it? I have a spare grey cable, but "top" and "bottom" are kind of ambiguous. (I think we talked about it in Discord, but for people who weren't in on that or who don't have their own ribbon cable connector presses...) Yes! that's right. On the grey ribbon, it would be the red one and the next three that you should leave intact in order to keep the ground and +5v available throughout the synth. I've edited the first post to make it clearer. Thanks!
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Post by solipsistnation on Dec 31, 2020 22:48:25 GMT
Cool, thanks.
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Post by rodney on Jan 30, 2022 20:24:17 GMT
... also, just adding that, although a ribbon cable pressing tool exists and makes this much easier, I don't have one. I just mash them down with a pair of pliers or multi-grips, vice-grips etc (tools of last resort that end up being used first).
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pol
Wiki Editors
Posts: 1,349
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Post by pol on Jan 30, 2022 20:29:43 GMT
I have a small case I'm making into a percussion synth, I'm going to do this for that as it won't have midi. Thanks for the idea and great instructions.
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Post by pt3r on Jan 31, 2022 7:11:31 GMT
Interesting I've been thinking about connecting two powered cases via a modified ribbon cable where I cut the 5v lines so I can patch from one case to the other without the need to patch some extra ground connection.
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