Muff's Modules & More

echoplex · Posted: Fri Apr 29, 2011 12:14 pm Post subject: OSC303 PWM mod. ?

OSC303 by Din Sync is a great sounding oscillator!

The only thing I miss is the option of PWM.
Is there any modification to have the option of PWM?

I remember a thread in which somebody mentioned PWM modification on OSC303..

Dirk95100 · Posted: Sat Apr 30, 2011 8:01 am Post subject:

http://forums.adafruit.com/viewtopic.php?f=13&t=6389&sid=fd2299771cc4b c74e952bee72c4cc369

I think Phono is lurking here to, so if he could chip in that would be Rockin' Banana!

phono1337 · Posted: Sat Apr 30, 2011 8:20 am Post subject:

echoplex · Posted: Sat Apr 30, 2011 8:55 am Post subject:

Oh great, that sounds simple.
Have you already tried this and built one with PWM modification?

@Paul: adapting the modification using a LED&LDR Combo (which is a vactrol) is a cool idea but vactrols are not fast! They are slow and time-lagging..
So isn't this a problem using vactrols to make a cv control?

phono1337 · Posted: Sat Apr 30, 2011 9:02 am Post subject:

Kakihara · Posted: Sat Apr 30, 2011 11:36 am Post subject:

owwww nice!!! Gonna do that soon hehehe

g.

Heathfinnie · Posted: Sat Apr 30, 2011 1:33 pm Post subject:

Wish I could still get one of these...

phono1337 · Posted: Sat Apr 30, 2011 1:37 pm Post subject:

sparks · Posted: Sat Apr 30, 2011 2:00 pm Post subject:

I've got two of 'em badboys and they get more use then my other OSCs put together. Love em, by far the most Bang for the buck I put in my rack to
date.

They are pure BUTTAH SlayerBadger!

If history have thaught me anything I'll be on place 1-4 on the waitinglist for the 303VCF.

Denis Goekdag · Posted: Sat Apr 30, 2011 2:35 pm Post subject:

You could use a Doepfer universal Vactrol module I guess.

Another PWM-ish sounding option is to set two OSC303 very close to eachother in frequency, then patch their pulse outputs into the input and cv input of a fast VCA like the Azimuth. The beat frequency between the two OSC303 will then kind of be your PW mod frequency.

Dirk95100 · Posted: Sun May 08, 2011 8:05 am Post subject:

Is there also a sync mod?
Soft and hard like the system 100.)
And lin FM?

That would make it the ultimate vco for me.

Prunesquallor · Posted: Sun May 08, 2011 10:43 am Post subject:

echoplex · Posted: Mon May 09, 2011 6:32 am Post subject:

acidphakist · Posted: Wed May 11, 2011 3:49 pm Post subject:

I'm curious why someone would take an oscillator whose sole purpose is to be faithful to that of the tb-303 and "invalidate the warranty" with such an impure mod.

Knobtwister · Posted: Wed May 11, 2011 5:00 pm Post subject:

echoplex · Posted: Thu May 12, 2011 2:45 am Post subject:

Now I bought a second OSC303 instead of doing the mod d'oh!

I know this will not sound like PWM but even fat and similar..that's my goal.
So what?! Mr. Green

miminashi · Posted: Thu May 12, 2011 3:42 am Post subject:

infection · Posted: Thu May 12, 2011 4:12 am Post subject:

How about a CCCP with a sync in jack instead of the bus enable switch?
maybe the bus enable could be a jumper on the back?

Monobass · Posted: Thu May 12, 2011 4:20 am Post subject:

Bah, 'faithful' is for Taxidermists and archivists. I want to rock the acid and a PWM mod on the greatest living squarewave will tear arseholes on a shit hot PA.

(plus the published mod has a bypass switch that returns the module to virginal status)

acidphakist · Posted: Thu May 12, 2011 8:24 am Post subject: