electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
go to the radio page Live at electro-music.com radio 1 Please visit the chat
  host / artist show at your time
today> We're back - Twyndyllyngs Live Chez Mosc
 Forum index » DIY Hardware and Software
AVRsyn
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
Page 1 of 1 [11 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
Clack



Joined: Aug 08, 2005
Posts: 438
Location: Walthamstow - london
Audio files: 5
G2 patch files: 1

PostPosted: Mon Apr 09, 2007 7:11 am    Post subject: AVRsyn
Subject description: amtel microcontroller synthesizer
Reply with quote  Mark this post and the followings unread

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?
Back to top
View user's profile Send private message Visit poster's website
bugbrand



Joined: Nov 27, 2005
Posts: 846
Location: Bristol, UK
Audio files: 1
G2 patch files: 1

PostPosted: Tue Apr 10, 2007 3:05 am    Post subject: Reply with quote  Mark this post and the followings unread

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
Back to top
View user's profile Send private message Visit poster's website
Clack



Joined: Aug 08, 2005
Posts: 438
Location: Walthamstow - london
Audio files: 5
G2 patch files: 1

PostPosted: Tue Apr 10, 2007 7:12 am    Post subject: Reply with quote  Mark this post and the followings unread

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! )
Back to top
View user's profile Send private message Visit poster's website
Clack



Joined: Aug 08, 2005
Posts: 438
Location: Walthamstow - london
Audio files: 5
G2 patch files: 1

PostPosted: Thu Jun 28, 2007 3:16 am    Post subject: Reply with quote  Mark this post and the followings unread

Hey , I'm part way through the strip boarding, just thought i'd post if anyone is interested in this ridicolous idea Embarassed

so far untested


AVRSYN---logic.gif
 Description:
AVRSYN logic
 Filesize:  57.93 KB
 Viewed:  7250 Time(s)

AVRSYN---logic.gif



AVRSYN---D-A.gif
 Description:
AVRSYN D/A
 Filesize:  58.5 KB
 Viewed:  7229 Time(s)

AVRSYN---D-A.gif



AVRSYN---interface.gif
 Description:
AVRSYN interface
 Filesize:  18.31 KB
 Viewed:  7244 Time(s)

AVRSYN---interface.gif


Back to top
View user's profile Send private message Visit poster's website
Sebo



Joined: Apr 27, 2007
Posts: 564
Location: Argentina

PostPosted: Thu Jun 28, 2007 10:22 am    Post subject: Reply with quote  Mark this post and the followings unread

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/
Back to top
View user's profile Send private message
Clack



Joined: Aug 08, 2005
Posts: 438
Location: Walthamstow - london
Audio files: 5
G2 patch files: 1

PostPosted: Thu Jun 28, 2007 12:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

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/
Back to top
View user's profile Send private message Visit poster's website
crashlander42



Joined: Oct 21, 2006
Posts: 292
Location: Orlando, FL (US)

PostPosted: Thu Jun 28, 2007 5:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

That's it? That could be fun. Is there no filter resonance control?
_________________
When they plug me in the lights go down in Hong Kong.

http://www.myspace.com/isaciongun
http://www.youtube.com/user/Crashlander42
My DIY stuff Flickr
Back to top
View user's profile Send private message
widdly



Joined: Jun 25, 2007
Posts: 268
Location: singapore
G2 patch files: 2

PostPosted: Sun Jul 01, 2007 6:56 pm    Post subject: Reply with quote  Mark this post and the followings unread

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!
Back to top
View user's profile Send private message
crashlander42



Joined: Oct 21, 2006
Posts: 292
Location: Orlando, FL (US)

PostPosted: Sat Jul 14, 2007 10:45 pm    Post subject: Reply with quote  Mark this post and the followings unread

Did you get this working? I'm interested in trying one myself, but I wanted to see how yours turned out first.
_________________
When they plug me in the lights go down in Hong Kong.

http://www.myspace.com/isaciongun
http://www.youtube.com/user/Crashlander42
My DIY stuff Flickr
Back to top
View user's profile Send private message
Clack



Joined: Aug 08, 2005
Posts: 438
Location: Walthamstow - london
Audio files: 5
G2 patch files: 1

PostPosted: Thu Jul 19, 2007 1:51 am    Post subject: Reply with quote  Mark this post and the followings unread

Almost there, just got to do some panel wiring


almost there.jpg
 Description:
AVRSYN - stripboarded - built
 Filesize:  140.35 KB
 Viewed:  413 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

almost there.jpg



_________________
Clacktronics.co.uk

Last edited by Clack on Thu Aug 30, 2007 5:10 am; edited 1 time in total
Back to top
View user's profile Send private message Visit poster's website
Clack



Joined: Aug 08, 2005
Posts: 438
Location: Walthamstow - london
Audio files: 5
G2 patch files: 1

PostPosted: Wed Aug 15, 2007 8:11 am    Post subject: Reply with quote  Mark this post and the followings unread

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


osca saw.mp3
 Description:
AVRSYN - DCO A on saw plain

Download
 Filename:  osca saw.mp3
 Filesize:  488.15 KB
 Downloaded:  996 Time(s)


both oscilators.mp3
 Description:
AVRSYN - Both dco a and b

Download
 Filename:  both oscilators.mp3
 Filesize:  599.32 KB
 Downloaded:  1005 Time(s)


envelope blips.mp3
 Description:
AVRSYN - Envelope Blips

Download
 Filename:  envelope blips.mp3
 Filesize:  291.55 KB
 Downloaded:  989 Time(s)


osc a with dist then b added.mp3
 Description:
AVRSYN - DCOA xor distorted then B added in

Download
 Filename:  osc a with dist then b added.mp3
 Filesize:  859.46 KB
 Downloaded:  956 Time(s)


_________________
Clacktronics.co.uk
Back to top
View user's profile Send private message Visit poster's website
Display posts from previous:   
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
Page 1 of 1 [11 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use