Open Music Labs » floppy-audio http://www.openmusiclabs.com Analog and Digital Techniques — Tools for Musicians, Composers, and Tinkerers Tue, 10 May 2016 00:18:49 +0000 en-US hourly 1 Floppy Creators and a brief diversion http://www.openmusiclabs.com/2011/10/floppy-creators-and-a-brief-diversion/ http://www.openmusiclabs.com/2011/10/floppy-creators-and-a-brief-diversion/#comments Sun, 02 Oct 2011 04:22:39 +0000 mcanulty http://www.openmusiclabs.com/?p=484 I thought I’d take an opportunity to post a couple of videos from users in the forums who have been working on their own floppy audio creations.

Forum user Paleorama has just posted this up, these sounds bring back a lot of memories:

[youtube]http://www.youtube.com/watch?v=4ZedEwlWLY8[/youtube]

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And forum user Zool posted this last October, particularly cool is his use of a slide-potentiometer to reduce spindle speed:

[youtube]http://www.youtube.com/watch?v=tAEmo7Ycd1Q[/youtube]

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On an unrelated note, a friend of mine asked me to take a look at their Korg nanoKONTROL which had its USB mini connector break off, so I grabbed a screwdriver and opened it up:

It’s a nice simple piece of construction, designed with fairly inexpensive generic components, except that I was a little surprised to see that it has an AVR ATMega32 pulling the strings inside of it.  I say surprised because AVR has a reputation for being a little over the cost-margin for products like this; normally one would expect to see something more generic, or even maybe something with USB in the micro, saving the cost of the extra part.

So, in addition to the Mega32, there is a PDIUSBD12 handling the USB interface, a handful of 4051 muxes, some transistors and such, and a bunch of pots.  I didn’t get a good look at some of the other chips, but there shouldn’t need to be much else in there.  The main reason I post about it though is because of the unstuffed header (on the left in the above photo) which I continuity checked and can verify is a breakout for ISP, although the pins are just a bit mixed up from the normal arrangement.  Everybody I know loves these little Korg nanoKontrollers, but  I’ve always thought it would be cool if they could be made to output something a little more detailed than MIDI’s 0-127.  Anyone want to take a shot at an OSC over USB controller project?  If so, there’s an inexpensive, ready-made project board right here, plus it screws together into a nice and easy to use finished product.  Just a thought!


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