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 
Live streaming at radio.electro-music.com

  host / artist show at your time
  EdisonRex Edison's Electronic Review
Please visit the chat
 Forum index » DIY Hardware and Software
An idea for a new kind of DIY VCO
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
Page 4 of 5 [121 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Goto page: Previous 1, 2, 3, 4, 5 Next
Author Message
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Sat Feb 25, 2006 10:50 pm    Post subject: Reply with quote  Mark this post and the followings unread

Yeah, FPGAs sound like they'd be pretty cool. But they're a bit to rational for me!!
"Having fun is half of the insanity!!"
or was that,
"Going insane is half the fun!!"?

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Sun Feb 26, 2006 3:06 am    Post subject: Reply with quote  Mark this post and the followings unread

How about this one?
Can you connect the output of a binary counter or 4017 to two, three or four AND gate inputs. (I'm pretty sure the answer is yes, I'm just checking)
Yes, of course you can! What was I thinking?
How about eight?

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 20681
Location: The Netherlands, Enschede
Audio files: 156
G2 patch files: 318

PostPosted: Sun Feb 26, 2006 9:10 am    Post subject: Reply with quote  Mark this post and the followings unread

You should check the data sheets for minimal output and maxiimal input current, but with CMOS the number of inputs that you can connect to an output should be virtual limitless.

For old style TTL outputs would have a fan-out specified and likewise inputs would have a fan-in, adding up the fan-in's should not exceed the fan-out then. But I can't remember ever having to worry about this for CMOS.

_________________
Jan
Back to top
View user's profile Send private message Visit poster's website
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Wed Apr 19, 2006 6:35 am    Post subject: Reply with quote  Mark this post and the followings unread

Well I fired up the first prototype of the Monscitor this arvo. Have a listen to the mp3. This is just the output of it running by itself at one fundamental frequency.
If you have a look at the waveshape, you'll see (and hear) that the transition from one wave to the next is quite sharp. I know that because I used dual up counters there will be a jolt when the byte goes back to 0000, but I think it's worse than it should be. Hopefully this is because I've transposed the bit lines somehow. I'm going to investigate that later tonight. I think it's a promising start though.
I'm thinking of using it as a sub oscillator in a synth, as it basically takes a square wave in and spits out a constantly morphing squarewave conglomeration which is always 3 octaves below (also sometimes containing 1&2 octaves below)
Bub is being induced in the morning. So I better get some sleep.


Monscitor 1.mp3
 Description:

Download
 Filename:  Monscitor 1.mp3
 Filesize:  139.42 KB
 Downloaded:  571 Time(s)


_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Scott Stites
Janitor
Janitor


Joined: Dec 23, 2005
Posts: 4121
Location: Mount Hope, KS USA
Audio files: 96

PostPosted: Wed Apr 19, 2006 10:37 am    Post subject: Reply with quote  Mark this post and the followings unread

Sounds pretty interesting! It would be cool to drive it through a modulated filter or LPG to see how that sounded.

Good luck on the inducement - I hope this isn't any indication of the kid's future stubborness factor Very Happy

Cheerio,
Scott
Back to top
View user's profile Send private message
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 20681
Location: The Netherlands, Enschede
Audio files: 156
G2 patch files: 318

PostPosted: Wed Apr 19, 2006 11:47 am    Post subject: Reply with quote  Mark this post and the followings unread

Ah you got it running, good !

Sounds good as well I think. Maybe don't fix anything now & good luck Smile

_________________
Jan
Back to top
View user's profile Send private message Visit poster's website
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Fri Apr 21, 2006 6:07 am    Post subject: Reply with quote  Mark this post and the followings unread

It turns out that I had the bit lines connected completely backwards! I fixed it, and it already sounds heaps better!

Hanna Ruby Sharp was born at 7:45 AEST this morning. 3.8kg Mum and bub doing well. Father very proud of all involved.

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
mosc
Site Admin


Joined: Jan 31, 2003
Posts: 17620
Location: Allentown, PA
Audio files: 125
G2 patch files: 60

PostPosted: Fri Apr 21, 2006 7:03 am    Post subject: Reply with quote  Mark this post and the followings unread

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

Congratulations! Happy Birthday Hanna Ruby

_________________
--Howard
my music and other stuff
Back to top
View user's profile Send private message Send e-mail Visit poster's website AIM Address
Scott Stites
Janitor
Janitor


Joined: Dec 23, 2005
Posts: 4121
Location: Mount Hope, KS USA
Audio files: 96

PostPosted: Fri Apr 21, 2006 10:34 am    Post subject: Reply with quote  Mark this post and the followings unread

What Mosc said Very Happy

Congrats, Uncle K.
Back to top
View user's profile Send private message
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Fri Apr 21, 2006 11:25 am    Post subject: Reply with quote  Mark this post and the followings unread

Congratulations to you and your family. long waiting is finally over.

all the best.

daniel

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 20681
Location: The Netherlands, Enschede
Audio files: 156
G2 patch files: 318

PostPosted: Fri Apr 21, 2006 11:34 am    Post subject: Reply with quote  Mark this post and the followings unread

Hey happy news, my congratulations !
_________________
Jan
Back to top
View user's profile Send private message Visit poster's website
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Fri Apr 21, 2006 5:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thanks everyone.
_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Tue Apr 25, 2006 5:24 am    Post subject: Reply with quote  Mark this post and the followings unread

Here's the latest pic and wave of the super-sub. It's still not as I want it to be, and it does use an awful lot of chips for what it does, but it already has good WSB potential.
Hey Jan, I've noticed the spikey wave form is back (have a look at the mp3 in Soundforge etc.) and I was wondering if, now that I have, 556 clocks feeding 4520 counters which are ANDed with the 4017 outputs via 4081s and sent to the 4066 inputs, should I have pull down resistors anywhere else?
Fixing the bit lines has decreased the amount of sudden steps in the wave, but it does mean that the steps which do occur are as bad as they can be (ie 1111 -> 0000) I've worked out a way that you could drop back to 3bit and use the fourth as an auto reverse bit (XORs) but adding anymore chips would just be getting to silly! Wouldn't it?
Could I run the 4017 straight off a square wave out of the SoundLab? It's musicality would immediately go up a few notches if could just patch it in as a sub oscillator. That's why I decided to call it a Super-Sub.
One of it's features/annoyances is the sudden shifts in amplitude. This could maybe be tamed with a little compressor like Scott has been experimenting with lately. Yet the shifts in harmonic content are the whole point, so maybe that's just part of the uncontrolled modulation effect.
The next thing will be to make each sample's mod clock internal/stopped/external. And I've thought of a rotary switch for each sample so you can dial up different mod clocks to each sample. External mod clock /2,3,4......10 is another possibility.
Anybody who has any ideas about how to improve this thing feel free to throw them around!
Is there anyone willing to help me do a schem of it using Ray's schem publisher? I'm still finding it hard to use.


Super-Sub.jpg
 Description:
 Filesize:  113.49 KB
 Viewed:  122 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

Super-Sub.jpg



Super-Sub.mp3
 Description:

Download
 Filename:  Super-Sub.mp3
 Filesize:  136.75 KB
 Downloaded:  559 Time(s)


_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 20681
Location: The Netherlands, Enschede
Audio files: 156
G2 patch files: 318

PostPosted: Tue Apr 25, 2006 12:39 pm    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:

Hey Jan, I've noticed the spikey wave form is back (have a look at the mp3 in Soundforge etc.) and I was wondering if, now that I have, 556 clocks feeding 4520 counters which are ANDed with the 4017 outputs via 4081s and sent to the 4066 inputs, should I have pull down resistors anywhere else?


You lost me Very Happy

I did read your request for help on drawing up the schematics, so I wont expect too much, but could you maybe give some scetch as what it is like now ?

The sound example is almost like there is mains hum in it ? Also there is not only the peaks, but I don't get the arcs in the waves either.

Nice pic you posted elswhere btw, the bathing one I mean.

_________________
Jan
Back to top
View user's profile Send private message Visit poster's website
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Tue Apr 25, 2006 4:48 pm    Post subject: Reply with quote  Mark this post and the followings unread

On the original the 4017 was feeding the 4066 directly, yet you suggested pull down resistors, and they helped stabilise it heaps. Now there are a number of gates in between those stages, and I wondered whether I need pull downs between any of them.
When the output of any of the gates isn't high it is definately low (ie: there aren't any "floaters") but that was the case with the 4017->4066 and the resistors helped pulled them down quicker.
Maybe once I get a rough schem to you, you'll start to see where it could be better. I'll have a go at that next.

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Blue Hell
Site Admin


Joined: Apr 03, 2004
Posts: 20681
Location: The Netherlands, Enschede
Audio files: 156
G2 patch files: 318

PostPosted: Tue Apr 25, 2006 5:44 pm    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
I'll have a go at that next.


No need to hurry.

I've got some customers at work wanting to have it done yesterday with specifications impossible to implement and third parties being involved refusing to do a thing.

But I still lurk here :-)

_________________
Jan
Back to top
View user's profile Send private message Visit poster's website
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Tue Apr 25, 2006 6:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

Oh it might take a while! Very Happy
Ray's schem publisher is driving me crazy! I must be missing something for it to be so hard to use.

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Tue Apr 25, 2006 10:29 pm    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
Is there anyone willing to help me do a schem of it using Ray's schem publisher? I'm still finding it hard to use.


if Jan is helping you to improve the circuit i can help by drawing the schem. or Jan are you doing it already?



daniel

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
dnny



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Tue Apr 25, 2006 10:54 pm    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
Oh it might take a while! Very Happy
Ray's schem publisher is driving me crazy! I must be missing something for it to be so hard to use.


have you read the Schematic Publisher HTML Help?
there are some good tips there.

HTH

d

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Wed Apr 26, 2006 6:03 am    Post subject: Reply with quote  Mark this post and the followings unread

Hey Dnny,
Can you make the page any bigger? It seems I get a few components on there, and it's full. How did Ray ever fit all the components for his Soundlab schems?

_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Wed Apr 26, 2006 8:11 am    Post subject: Reply with quote  Mark this post and the followings unread

Here's the .sch file of the main board so far.
It seems very simple, but most of it happens on the mod boards. (which I'm starting on now)


SSMain.sch
 Description:

Download
 Filename:  SSMain.sch
 Filesize:  42.68 KB
 Downloaded:  72 Time(s)


_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
Uncle Krunkus
Moderator


Joined: Jul 11, 2005
Posts: 4760
Location: Sydney, Australia
Audio files: 52
G2 patch files: 1

PostPosted: Wed Apr 26, 2006 8:49 am    Post subject: Reply with quote  Mark this post and the followings unread

Sorry, couldn't stand trying to do this one in SP, so I drew it in photoshop! This is 1/8th of the mod section. I've got four of these on each mod board. Very simple.


SSSketch.jpg
 Description:
 Filesize:  13.87 KB
 Viewed:  5127 Time(s)

SSSketch.jpg



_________________
What makes a space ours, is what we put there, and what we do there.
Back to top
View user's profile Send private message Visit poster's website
tripledot



Joined: Apr 24, 2006
Posts: 12
Location: cornwall

PostPosted: Wed Apr 26, 2006 11:32 am    Post subject:   Reply with quote  Mark this post and the followings unread

i better throw in a hearty belated congratulations! a child is the ULTIMATE DIY project!

(plus good work on the oscillator!)
Back to top
View user's profile Send private message
toppobrillo



Joined: Dec 10, 2005
Posts: 766
Location: oakland, ca
G2 patch files: 1

PostPosted: Wed Apr 26, 2006 3:25 pm    Post subject: Reply with quote  Mark this post and the followings unread

i didna like that schematic publisher software much. i use "circuit maker 2000" for drawing them. much easier. it is also a simulation, and has a pcb design thing too. if anyone wants it, lemme know, 'PM' me, also, i have "electronics workbench". i will post a screen shot of it here also so youall can see.

i am moving right now, trying to finish some things up, but, in the future, if anyone needs a hand with drawing a schematic or designing a PCB, let me know! i'm glad to help- if it's elaborate, [especially a PCB] perhaps we could work out a trade for something. cool then.

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



Joined: Mar 12, 2005
Posts: 519
Location: Helsinki, Finland
Audio files: 8

PostPosted: Wed Apr 26, 2006 10:49 pm    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
Hey Dnny,
Can you make the page any bigger? It seems I get a few components on there, and it's full. How did Ray ever fit all the components for his Soundlab schems?


you can adjust the page size :

Use "Print Setup..." to select paper sizes other than 8.5" x 11." The virtual drawing page will assume the dimensions and orientation of the selected paper.

HTH

_________________
Association of experimental electronics
www.koelse.org
flickr: cable porn group
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger
Display posts from previous:   
Post new topic   Reply to topic Moderators: jksuperstar, Scott Stites, Uncle Krunkus
Page 4 of 5 [121 Posts]
View unread posts
View new posts in the last week
Goto page: Previous 1, 2, 3, 4, 5 Next
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
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


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