DIY MMM Bananas ?

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The Panda Returns
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DIY MMM Bananas ?

Post by The Panda Returns » Thu Mar 31, 2011 10:27 pm

I lurk often and found the MMM concept to be very nice and apartment friendly. However, I wonder how one would go about adding other diy circuits into MMM format ? How deep can you go ?

Also, I lurk often in the rouge banana section, and found that some have bananified other modules. Can MMM be bananified as well (any normalisation ?)

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Post by mmm » Fri Apr 01, 2011 9:46 am

They can. I like to use switching jacks on signal and modulation inputs that keep them at ground when nothing is patched into them just to keep out any spurious interferance.

Also, some of the inputs for CV's on multiple channel modules are cascaded just to reduce patch cord clutter and save on jack population but, nothing says they can't be switched.

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Post by The Panda Returns » Sat Apr 02, 2011 8:30 am

Sweet ! That is good to know. Also, although I realise the format is young, are there many other diy circuits available that will fit in the MMM format ? I am thinking of things like CGS, Papareil's Polivoks clone, Oakley modules, etc... It would appear that many PCBs are larger than the dimensions would allow....

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Post by The Panda Returns » Sun Apr 03, 2011 10:09 am

Further inspection on the MMM wiki reveals that the dimensions of the PC board are roughly the same as the panels.... I don't think too much other stuff would fit on that.....

On the other hand, some of the CGS PCBs might - like the Wavefolder (0.8" by 2").....

Still, very compelling to fit a system into an apartment. Or suitcase....

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Post by mmm » Mon Apr 04, 2011 3:42 pm

Yeah, my boards are pretty small. I kinda just focus on my stuff and never really explored everybody else.

So, The other guys here will have to help you with size comparisons :)

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negativspace
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Post by negativspace » Mon Apr 04, 2011 6:38 pm

That's what guys do best, right? :razz:

Here's a thought... there are lots of PCBs out there which would fit behind a double-wide MMM panel. That would be what, 3.5x7"? CGS has a ton of stuff on 1"x6" and 2"x6" boards. That opens the door to a lot of 4U and 5U designed boards - just make sure they fit between the rails.

What's the clearance in that respect, George?

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pugix
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Post by pugix » Mon Apr 04, 2011 9:23 pm

mmm wrote:Yeah, my boards are pretty small. I kinda just focus on my stuff and never really explored everybody else.

So, The other guys here will have to help you with size comparisons :)
George uses 1/8 watt resistors to squeeze things together. Very compact boards! :yay:
Richard
http://www.pugix.com

"Everything in our world is actually always modulated by everything else." - Peter B

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Post by mmm » Tue Apr 05, 2011 11:12 am

I did my best to make them as small as I could and still use through-hole components.

I had to re-design my quAD/ASR to allow it to trigger at around 2.5-3V. Richard got the first one. That was a tight board. But, they're all the same size on the single-wide modules to fit the mounting scheme so, modules like the mixer and buffer look pretty empty compared to some of the others. The VCO, I had to go with a 4-layer board and had to add a bit more board space to cram it all on there.

My single panels are all 3.5" x 3.5" and the panels are all the same with a 4x4 hole matrix spaced at 0.70". The graphics cover the unused holes.

Thanks for chiming in guys and "HI!" Richard :)

I'm still in the midwest and don't have easy access to a lot of my info so, thanks.

G

The Panda Returns
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Post by The Panda Returns » Tue Apr 05, 2011 11:41 am

Wow.... I didn't realise your were traveling ! By all means, enjoy your vacation ! Sorry to interrupt....

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Post by mmm » Tue Apr 05, 2011 12:50 pm

The Panda Returns wrote:Wow.... I didn't realise your were traveling ! By all means, enjoy your vacation ! Sorry to interrupt....
No problem. I came out to Chicago for the Trash Audio/Xart synth event so, not exactly a vacation despite how fun it was. I love it when work is a blast :)

My customers are a great group of people and pretty much have my back when I'm strapped with occasional internet access so, ask away. :bananaguitar:

G

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