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 Forum index » DIY Hardware and Software » Arduino
Neutron Orgone accumulator
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defex



Joined: Jun 27, 2008
Posts: 36
Location: Toronto, canada

PostPosted: Fri Jun 27, 2014 1:08 pm    Post subject: Neutron Orgone accumulator
Subject description: Teensy 3.1 multiple phase accumulator oscillator.
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Here is my new euro module programmed in arduino IDE. there are a few soundcloud examples on the page linked below.

It runs on a teensy 3.1 and has real time v/oct expo converter. There are 11 simultaneous oscillators, an 88khz output sample rate.

There is a 4 pole 19khz output filter and 4 attenuverting control voltage inputs.

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Http://www.neutron-sound.com/noa.html

The code is available on github, so you could program it to do whatever you like.

Last edited by defex on Fri Jun 27, 2014 2:05 pm; edited 1 time in total
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Blue Hell
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Joined: Apr 03, 2004
Posts: 20736
Location: The Netherlands, Enschede
Audio files: 158
G2 patch files: 318

PostPosted: Fri Jun 27, 2014 1:44 pm    Post subject: Reply with quote  Mark this post and the followings unread

Oh wow, very nice!

And amazing performance out of such a small board.

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defex



Joined: Jun 27, 2008
Posts: 36
Location: Toronto, canada

PostPosted: Fri Jun 27, 2014 6:56 pm    Post subject: Reply with quote  Mark this post and the followings unread

For a long time i was working on something called "neutron shield modulator" which was an arduino based one, this can do a lot of the same things, in some cases actually more.

It is sold as an oscillator but if you wanted to make it do anything else:

open source

arduino IDE compatible (with teensyduino)

96 MHZ ARM cpu (fast enough to real time calculate exponential conversion from 1v/oct to frequency in floating point, without bothering your program. no lookup tables and bend input cheating!)

10 programmable knobs

8 programmable switches

4 attenuverted CV inputs

gate input

trimmed/buffered ADC input (usually for 1V/oct)

12 bit DAC output (88khz in this case)

level shifted unfiltered 1/0 output.

7 extra GPIO pins left on teensy for hacking. 4 are ADC in, one is PWM out.

external voltage reference. with buffer for pots.

teensy is on its own regulator, nothing else uses its power (less noise)

MOTM or euro power, works at +-12 or +-15v

optional 5v onboard regulator.

CPU specs: https://www.pjrc.com/teensy/teensy31.html

I am thinking of making blank cards (or a template, at least) you can put over the controls to write your own control names on.
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elmegil



Joined: Mar 20, 2012
Posts: 1540
Location: Chicago
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PostPosted: Sat Jun 28, 2014 3:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

And I plan to do my own MOTM format panel, will share the artwork at least.

It sounds great, and I want to play with the code Smile
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defex



Joined: Jun 27, 2008
Posts: 36
Location: Toronto, canada

PostPosted: Sat Jun 28, 2014 7:23 pm    Post subject: Reply with quote  Mark this post and the followings unread

Well i did add a couple of holes so you can attach it to brackets, but you will be doing a lot of wiring.

Something i did not think of is showing which of the switch pads you need to connect your toggle switches to, there are 6 for each switch, but you actually only need to connect 2 wires to your toggle switches.

Ill put it on my list and make a diagram on the web page for 5U wiring.
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elmegil



Joined: Mar 20, 2012
Posts: 1540
Location: Chicago
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PostPosted: Sat Jun 28, 2014 7:51 pm    Post subject: Reply with quote  Mark this post and the followings unread

I've wired the MOTM version of Dustin's Dual Mirror Core/Complex VCO, and a MFOS Soundlab Plus. Nothing scares me. Smile
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Varoudis



Joined: Dec 03, 2009
Posts: 31
Location: London

PostPosted: Sat Jun 28, 2014 11:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

Perfect for experimental coding and learning DSP.
I'll take one soon!
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