electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links
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
poster
 Forum index » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
PHOBoS' Yellow Case PWM lunetta (for lack of a better name)
Post new topic   Reply to topic Moderators: mosc
Page 1 of 1 [5 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
PHOBoS



Joined: Jan 14, 2010
Posts: 5581
Location: Moon Base
Audio files: 705

PostPosted: Wed Feb 06, 2013 4:23 pm    Post subject: PHOBoS' Yellow Case PWM lunetta (for lack of a better name)
Subject description: schematics and soundbites
Reply with quote  Mark this post and the followings unread



This project started out with a modified version of Tim Escobedo's PWM circuit. I had allready added a 4040 divider to it and
to make some more use of it as a standalone instrument I decided to add a VCO and R2R. But instead of a standard R2R, I used
inventor's tunable rnr network. I added some XOR's on the inputs as buffers which can also invert the signal.

After I heard jcintheus' excellent 21st Century Schiziod Mess I decided to put in a 4051/4017 melody generator* aswell. And to
be able to make some more use of it I also added 3 oscillators made with a 40106.

And to top it all of I put in a stereo mixer with 2 channels that have dedicated inputs that can be selected with a switch,
and 3 'free' channels. All 5 channels have level and panning control. The original PWM input signal can also be mixed in and
there is a feedback loop from the output of the mixer back to the input of the PWM circuit. I used a simple FET mixer to add both
signals to that circuit.

more pics here


*the 404/4051 is wired up differently for easier PCB wiring, but it works just the same.


PWMXLmixer.gif
 Description:
PWM XL schematic page 2 (mixer)
 Filesize:  47.29 KB
 Viewed:  1094 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

PWMXLmixer.gif



PWMXLFRONT.jpg
 Description:
PWMXL Front design
 Filesize:  751.84 KB
 Viewed:  796 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

PWMXLFRONT.jpg



PWMXL.gif
 Description:
PWM XL schematic page 1 (lunetta circuits)
 Filesize:  144.61 KB
 Viewed:  1126 Time(s)
This image has been reduced to fit the page. Click on it to enlarge.

PWMXL.gif



_________________
"My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube

Last edited by PHOBoS on Wed Feb 06, 2013 5:06 pm; edited 4 times in total
Back to top
View user's profile Send private message Visit poster's website AIM Address Yahoo Messenger MSN Messenger
PHOBoS



Joined: Jan 14, 2010
Posts: 5581
Location: Moon Base
Audio files: 705

PostPosted: Wed Feb 06, 2013 4:35 pm    Post subject: PWM Lunetta soundbites Reply with quote  Mark this post and the followings unread

Some parts cut from a longer session. The first one is without any external input source but with a delay added in a feedback loop.
For the other parts I used my "Super Concert" keyboard. Cool


PHOBoS - Excuse me for Sneezing - Fractured Fidelity.mp3
 Description:

Download
 Filename:  PHOBoS - Excuse me for Sneezing - Fractured Fidelity.mp3
 Filesize:  6.54 MB
 Downloaded:  1575 Time(s)


PHOBoS - Excuse me for Sneezing - You're so Funny.mp3
 Description:

Download
 Filename:  PHOBoS - Excuse me for Sneezing - You're so Funny.mp3
 Filesize:  2.67 MB
 Downloaded:  1389 Time(s)


PHOBoS - Excuse me for Sneezing - Eggman's Bumpy Ride.mp3
 Description:

Download
 Filename:  PHOBoS - Excuse me for Sneezing - Eggman's Bumpy Ride.mp3
 Filesize:  1.94 MB
 Downloaded:  1399 Time(s)


PHOBoS - Excuse me for Sneezing - Invasion of the Snotty Snatchers.mp3
 Description:

Download
 Filename:  PHOBoS - Excuse me for Sneezing - Invasion of the Snotty Snatchers.mp3
 Filesize:  2.35 MB
 Downloaded:  1338 Time(s)


PHOBoS - Excuse me for Sneezing - Jump for Jesus.mp3
 Description:

Download
 Filename:  PHOBoS - Excuse me for Sneezing - Jump for Jesus.mp3
 Filesize:  2.23 MB
 Downloaded:  1339 Time(s)


_________________
"My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube
Back to top
View user's profile Send private message Visit poster's website AIM Address Yahoo Messenger MSN Messenger
Draal



Joined: May 18, 2010
Posts: 308
Location: Oak Park, IL
Audio files: 5

PostPosted: Fri Feb 08, 2013 10:54 am    Post subject: Reply with quote  Mark this post and the followings unread

What a great looking and sounding machine. Cool

I like taking Tim Escobedo's lo fi circuits and bread boarding them or parts of them for lunetta use.

_________________
Zontar Prevails!
Back to top
View user's profile Send private message Visit poster's website
analog_backlash



Joined: Sep 04, 2012
Posts: 393
Location: Aldershot, UK
Audio files: 21

PostPosted: Fri Feb 08, 2013 5:01 pm    Post subject: Reply with quote  Mark this post and the followings unread

Sounds great - as good as it looks - another triumph! I'll have another look at the schematics to try and work out what's going on.

As I said before, I'm trying to clear my breadboards by actually building stuff at the moment. Currently, I'm building a simple mixer (YAWN) which worked perfectly on the breadboard, but my hard-wired version is (almost) dead on the left channel Mad . It'll be a simple cock-up, but I'm too tired to sort it out now (and I've had two power cuts today, which haven't helped).

When I've got that out of the way, I'm going to commit some of my lunetta experiments to perf, probably as a mini-lunetta at first. If that goes well, I'll do something more modularish. Anyway, eventually I'll have something worth posting...

Keep up the good work,

Gary
Back to top
View user's profile Send private message
blue hell
Site Admin


Joined: Apr 03, 2004
Posts: 24075
Location: The Netherlands, Enschede
Audio files: 277
G2 patch files: 320

PostPosted: Tue Feb 12, 2013 10:25 am    Post subject: Reply with quote  Mark this post and the followings unread

Good stuff!
_________________
Jan
also .. could someone please turn down the thermostat a bit.
Posted Image, might have been reduced in size. Click Image to view fullscreen.
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: mosc
Page 1 of 1 [5 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 » Lunettas - circuits inspired by Stanley Lunetta
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