Miasma: Function Generator (DIY PCB based on Befaco Rampage)

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Miasma: Function Generator (DIY PCB based on Befaco Rampage)

Post by Sin_Phi » Tue Mar 14, 2017 7:21 pm

First off to get it out of the way Befaco lists their work as CC-BY-NC-SA. So what I have done is in that spirit and my documentation and files can be found under CC-BY-NC-SA here.

Just got my prototype PCBs in 2 weeks before I thought I would, so my parts are still out on order, but wanted to share what I have been working on. Myself and a couple of fellow wigglers will be building and testing these soon, can't wait!

The modification from the original Befaco Rampage are the addition of attenuverters to the rise and fall channels, a four quadrant multiplier (AD633) or inverted sum, and a SMD layout.

My documentation on my site has a lot more info if your interested, the schematics, BOM, panel CAD and all KiCAD files.



*noticed my image wasn't working, fixed
Last edited by Sin_Phi on Wed Mar 15, 2017 6:11 pm, edited 1 time in total.

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Post by Altitude909 » Tue Mar 14, 2017 8:18 pm

Woot. This has been on my radar

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Post by Ceres » Tue Mar 14, 2017 10:54 pm


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Post by trip » Wed Mar 15, 2017 6:44 am

Looks great! Attenuverters on the cv inputs so important for cross patching them.

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Post by realitycontrol » Wed Mar 15, 2017 4:53 pm

I'm liking the panel design!
Good luck with the prototypes.

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Post by sammy123 » Wed Mar 15, 2017 4:57 pm

Oh awesome!

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Post by maltemark » Wed Mar 15, 2017 5:20 pm

Thinking this will be very good.

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Post by GryphonP3 » Wed Mar 15, 2017 5:27 pm

Put me down for two!
My cat can eat a whole watermelon ...

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Post by oaklandzzzoo » Wed Mar 15, 2017 5:27 pm

Nice been waiting on this. Any estimates on release?

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Post by egilegilegil » Wed Mar 15, 2017 6:08 pm

This looks absolutely fantastic :guinness: :guinness:

As do the rest of your modules, can't wait for them all to be released!

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Post by spneca » Wed Mar 15, 2017 8:19 pm

I'm in for a set.

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Post by davehoec » Wed Mar 15, 2017 9:02 pm

Looks great! I'll be in for a set when available.

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Post by basicbasic » Wed Mar 15, 2017 9:38 pm

Interested in a set :sb:

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Post by satori » Thu Mar 16, 2017 12:00 am

Love it! Nice additions. I love the Rampage and the changes you've made are nice.
Looking forward to some of your other designs, Especially the Odium. Been wanting a euro 296 since playing with the Buchla version. Will be keeping aneye on your page!

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Post by MatrixModulator » Thu Mar 16, 2017 3:01 am

:party: count me in too. Looks super sweet!!

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Post by insula » Thu Mar 16, 2017 3:46 am

:love: :love:

looks really nice!!!

also i check on your web site that you are working in a matrix mixer, is just a proto?

Do u havwe plans to publish the cad files for the matrix mixer?

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Post by Virgil » Thu Mar 16, 2017 6:00 am

I had already put it on Modulargrid a while ago due to my excitement. Sorry.
So happy to see the design being finalized :-)

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Post by spotta » Fri Mar 17, 2017 6:06 pm

A set for me for sure, nice improvement.

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Post by macmacieq » Sun Mar 19, 2017 3:14 pm

Looks really cool :sb:

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Post by pritzcobinger » Sun Mar 19, 2017 4:08 pm

Wow, that looks nice!

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Post by DMR » Sun Mar 19, 2017 4:30 pm

Looks good. I see you provided a PDF template of the front panel, are you planning on potentially selling panels as well?

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Post by Sin_Phi » Fri Mar 31, 2017 6:06 pm

There will be another revision on the prototype to refine some footprints and anything testers may find. Video of mine up and running. At least a couple months until boards are available somewhere.


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Post by steveoath » Sat Jul 15, 2017 9:02 am

This looks fantastic, how's the testing going?

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Post by XAXAU » Fri Aug 18, 2017 7:24 am

Love this! You should do a kit where the SMT parts are flowed in already cause I can´t do SMT! :)

Beautiful panels too. Love how the text is milled out!


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Post by didahdrieghe » Fri Aug 18, 2017 9:00 am

Is this still happening? Would love to build a few of these.

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