//// pictures of our sound-making machines ////

xenus_dad · 2018-07-05T00:24:49.329Z

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I’m not sure this is quite the instrument I’m looking for here but this is visually satisfying, even with the interloper on the right.

Cementimental · 2018-07-05T07:53:20.369Z

A university were sending them out for free years ago, the link is gone now tho.

If you need a reference of this Chua’s kit, please cite this article
in your Chua’s kit related publications:
G. Gandhi, Gy. Cserey, J. Zbrozek and T. Roska: “Anyone can build
Chua’s circuit: Hands-on-Experience with Chaos Theory for High School
students”, International Journal of Bifurcation and Chaos, Vol. 19,
No. 4 (2009) pp. 1113-1125.

Best wishes,
Gyorgy Cserey, Ph.D.
Faculty of Information Technology and Bionics
Pázmány Péter Catholic University

Zedkah · 2018-07-05T09:41:22.939Z

The chua website- as shown on your circuit board has lots of versions of the circuit- most of which look pretty straightforward apart from these are designed to give oscilloscope patterns and not audio. Was this circuit an actual audio circuit?

Cementimental · 2018-07-05T10:05:04.809Z

i can’t find the documentation for this actual kit right now but yes it has an audio out and the instructions mentioned the fact that it can be heard in the audio range as well as connected to a oscilliscope to see the patterns. Sounds like somewhat-controllable noise, perfect for me ha.

Probably will try some different values to get it going more in the LFO range.

I think it might kind of fit as a loong 1u module directly screwed on rather than behind a faceplate

Prob will try and build the ones on the site some time too, but having a weird readymade module appeals to me more

Zedkah · 2018-07-05T10:57:08.675Z

Thanks, if you ever come across the instructions please do circulate… I’m not a rack person so the niceties of how many u’s are a bit beyond me -but good luck with getting this into your build. And good luck with the lfo adaptions that sounds cool.
One more question: what does the pot do to the audio?

thom · 2018-07-05T11:20:11.459Z

Loitering:

norns arrived.

guitar into mlr.

joy.

Approaching: norns

norns is _______

norns is joy

More than 20 characters of it.

Cementimental · 2018-07-05T11:41:43.205Z

Will do. The pot is for kind of tuning it to the proper chaotic oscillation, below a certain point it just makes a horribly loud high squeal. Going to add a trimmer in series with a proper mounted pot for playability

I believe there are 2 or 3 useful places to take different signals to the board (ie for XY and Z of a scope but also hopefulyl for different-sounding or LFO waveforms i can add outputs for) but yet to properly experiment

I’m not a rack person

Ha me neither, my ‘rack’ is barely yet two bits of square dowel and i kind of hope it doesn’t become any more than bits of square dowel in some old lunchbox or briefcase Also I’m considering a separate box of unpowered modules, in a non-standard format with panels based on the arbitary size of some veroboard I have lots of

barnjazz · 2018-07-05T13:41:03.830Z

cross-post from insta, but my DIY 7U 84HP case survived its first out-of-town trip! no issues from security whatsoever, just a few sideways looks from travelers. a few dings that are the beginning of the case’s “character.”

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Jonny · 2018-07-05T13:56:37.241Z

loving the blank panels.

ehafh · 2018-07-06T15:53:57.945Z

Recently made a DIY version of the Animodule speaker

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animodule-speaker2.jpg700×845 565 KB

Cementimental · 2018-07-06T16:08:14.191Z

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My new eurorack case

Excited that my DIY (stripboard + a kit of parts) PSU finally works even tho I amazingly made THE SAME DUMB MISTAKE as when I made my first PCB-based one - regulators swapped around. -__-;