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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Posted: Mon Apr 09, 2007 7:11 am Post subject:
AVRsyn Subject description: amtel microcontroller synthesizer |
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im interested in this http://www.elby-designs.com/avrsynth/avrsyn-about.htm
mostly because it is so cheap in component parts and seems fun to experiment with ( possible a good way into microcontrollers? ). but buying it from australia proves to be a bit expensive - im on the otherside of the world! plus it is quite expensive already
I can get all the bits even the unusual bits ( precicion resistors , inductors, regulators, opto-isolator ) and stripboard them I have experience in that
Im a little stuck on what ATmega16 chip i should get as rapid presents me with about 5 different permutations of the same thing with little detal ( as usual with hard to make sense abbreviations! ) anyone know what theese mean? and what I would need?
rapid atmega
also is it really as simple as connecting it to a parallel port as seen here?
http://www.captain.at/electronics/atmel-programmer/atmega16-programmer.png
on the avrsyn schematic it has pin connector on pin 6,7,8,9 (mosi,miso,sck,reset) its just possible to connect that to a parralel socket and program it right? ( 1,2,11,16 of a parralell port ?) with an appropriate peice of software like AVR-Studio 4
so in a way it is a development board set up as a synthesizer? |
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bugbrand
Joined: Nov 27, 2005 Posts: 846 Location: Bristol, UK
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Posted: Tue Apr 10, 2007 3:05 am Post subject:
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AVRs are powerful but can make your head hurt. This certainly would be an interesting project to do but do be prepared for some annoyance if you're trying to figure out programming chips for the first time! Don't let me put you off though..!..
At Rapid:: there's actually on 2 ATMega16s - pop open the 'Show Information' bit at the bottom and you can see that one runs at 8MHz and can run off a low voltage supply whereas the other needs 5v supply and can run at 16MHz. Permutations. But, yeah, these things can be well confusing!
I daresay there's A LOT to be learned within this project if you're going to do it all from scratch. Good luck!
EDIT ---- this site is also very interesting::: http://www.avrx.se
--Elby didn't design the AVRSynth but I can't figure (in the rush that i'm in now) whether this AVRX site is linked to the AVRSynth or just something else hyper-cool.
----Digital Waveshaping Wavetable synth! _________________ http://www.bugbrand.co.uk
http://www.bugbrand.blogspot.com |
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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Posted: Tue Apr 10, 2007 7:12 am Post subject:
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i think its a little different
this bloke invented it http://www.jarek-synth.strona.pl/
then paul maddox took over apparently
then elby-designs took it and started to sell it
maybe i'll buy a pre-programmed one and use it as a reference - i'll get it up and running first then fool around with it see if I can burn my own. Its amazing though if I bought all the bits from rapid it would cost approx £25 to make - cheapo! ( possibly not as cheap as a casio CZ but whats the fun in that! ) |
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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Posted: Thu Jun 28, 2007 3:16 am Post subject:
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Hey , I'm part way through the strip boarding, just thought i'd post if anyone is interested in this ridicolous idea
so far untested
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Sebo
Joined: Apr 27, 2007 Posts: 564 Location: Argentina
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Posted: Thu Jun 28, 2007 10:22 am Post subject:
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Thanks for the pics.
This is an interesting project.
Why you choose the ATMega16 and not the ATMega32?
Post some sounds when you finish it. _________________ Sebo
---------------------------------------
My Music:
https://www.facebook.com/cosaquitos/ |
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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Posted: Thu Jun 28, 2007 12:20 pm Post subject:
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I dont know, I bought the pre-burnt chip from elby designs and it was cheaper? easy to upgrade anyway just have to replace the clock.
btw theres some nice development going on here of its design
http://krue.net/avrsyn/ |
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crashlander42
Joined: Oct 21, 2006 Posts: 292 Location: Orlando, FL (US)
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widdly
Joined: Jun 25, 2007 Posts: 268 Location: singapore
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Posted: Sun Jul 01, 2007 6:56 pm Post subject:
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I built one of these using Elby's kit. It's pretty crusty sounding and the filter is knida naff. I read there is a new version using a filter based on Antti's moog models which sound great in software.
Also, there is a LOT of offboard wiring! |
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crashlander42
Joined: Oct 21, 2006 Posts: 292 Location: Orlando, FL (US)
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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Clack
Joined: Aug 08, 2005 Posts: 438 Location: Walthamstow - london
Audio files: 5
G2 patch files: 1
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Posted: Wed Aug 15, 2007 8:11 am Post subject:
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Finished ( sort of ) utterly over complicated I recommend buying the board unless your building it really cheap. Schematics above have an error - will update tommorow.
Have a few problems though, LFO is randomised, I dont know if thats my layout or problems with my construction
Here are my samples of it
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AVRSYN - DCO A on saw plain |
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osca saw.mp3 |
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AVRSYN - Both dco a and b |
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both oscilators.mp3 |
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envelope blips.mp3 |
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AVRSYN - DCOA xor distorted then B added in |
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osc a with dist then b added.mp3 |
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859.46 KB |
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1128 Time(s) |
_________________ Clacktronics.co.uk |
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