Muff's Modules & More

mono-poly · Posted: Wed Nov 18, 2009 9:01 pm Post subject:

Ask Maleko how to mod the noisering with an external clok input!

DGTom · Posted: Wed Nov 18, 2009 9:09 pm Post subject:

parasitk · Posted: Thu Nov 19, 2009 11:45 am Post subject:

DGTom · Posted: Fri Nov 20, 2009 2:47 am Post subject:

Well, here is my mutated Quad Mix VCA...

I spent alotta time trying to figure out how to do it without either missing out functions or adding half a dozen switches... made all the more diffucult due to not having the schematic.

Finally I figured out a way to not only maintain all the main features, but, also added some nice ones along the way... it is, however, abit of a wierd module now.

Patch programmable back to normal operation; the red socket is the output of the Bias sub-cct. this is normalled to the CV ins as stock, so with no CV input the VCAs are held open, now I have a cool 0 - 13V voltage source.

The 'off-grid' yellow socket inbetween A & B is an input into the ABC mixer, this was normalled to the output of D, so I can patch D out (green above the red) back into here for normal operation, or, inject another VCA or Mixer or whatever from elsewhere; I really like this because this signal doesn't go into the VCAs at all & when the module is patched how I usually use it ABC Out -> D In -> D Out -> Speakers I can do some gnarly distortion tricks with the Bias out, basically allowing for smooth cross-fading between clean & dirty with the Bias knob.

For some people this would be overly clunky, with 4 patchcords chained from Bias to A, B, C, D CV ins it is a little, but the thing is you realy hardly ever need to do that & all the extra options that 'opening' up the behind the scenes functionality bring make it well worth it for me.

parasitk · Posted: Fri Nov 20, 2009 6:55 pm Post subject:

Cool! Do you have a pic of the guts?

DGTom · Posted: Fri Nov 20, 2009 7:19 pm Post subject:

Edit;

Here we go:

... this is the most I've altered a module during bananafication; I spent ages on it last night & nothing exploded which is good Dead Banana

The heatshrink bit on the left is a 100K resistor I put in-line with the summing input... just in case... it actually drops the gain a fair bit, might toy with that a little more, its kind of cool at the moment as you can drive channel D really hard & this knocks it down to something more resonable... but listening back to the initial patch I had yesterday with a sine wave injected straight in hmmm.....

Putting the klangwerk between D Out & the ABC mix-buss is awesome SlayerBadger!

DGTom · Posted: Sat Nov 21, 2009 1:51 am Post subject:

&...

Expanded Frequency Divider. Seperate, buffered outputs for 8 / 16 / 32 / 64 + the output of the switch & the audio output!

SlayerBadger!

I cut a trace & added an extra 2K2 resistor in order to use the buffer which was used to provide the 2nd output.

Clock-a-thon! w00t

tragedybysyntax · Posted: Sat Nov 21, 2009 12:20 pm Post subject:

Christ, that sequence was neat as shit. Love how those osc's sound... *sigh*

Hey guys, this pic is elsewhere on muff's but i thought it should be seen in here since it's you guys that made me go bananas! lol. That MOTM filter is coming out as soon as I get the Binary Zone in the mail and make a panel for it.

parasitk · Posted: Tue Jan 05, 2010 5:15 pm Post subject:

I finished my QVCA today, using the tricks DGTom listed above.

I didn't put a resistor before the D/Mix input (floating grey jack above the D output and below the 75/100 switch) because it never had one to start... but I dunno, maybe I should? seriously, i just don't get it

My only other thing is I put the Bias out jack (yellow out above the word BIAS) a touch too close to the PCB and the washer is close to to two solder points. It's kinda stressing me out. I put a piece of tape there, but I might pull it back out and move it over a touch for my peace of mind.

Phineous · Posted: Tue Feb 23, 2010 6:44 pm Post subject:

bump for a great thred

l8r

P

Atticus · Posted: Wed Feb 24, 2010 9:15 am Post subject:

BananaPlug · Posted: Wed Feb 24, 2010 9:25 am Post subject:

adamf · Posted: Sat Feb 27, 2010 6:46 pm Post subject:

Atticus · Posted: Sun Feb 28, 2010 3:18 pm Post subject:

Ekofisk · Posted: Sat Mar 06, 2010 5:14 am Post subject:

Look what I just did!

Have yet to finish the BZ, but I think I'll do the switch-thing that others have done.
It really is amazingly ease to do this. (Haven't tried them yet, but my multimeter indicates connection on all counts, I am assuming they work)

Not in the picture: VCO and MiniWave. Getting done today.

parasitk · Posted: Sat Mar 06, 2010 10:22 am Post subject:

Nice! Definitely add a switch with center-off for the Binary Zone's clock input. And do the pullup resistor trick on the RST input (it's explained somewhere around here...) w00t

Ekofisk · Posted: Sat Mar 06, 2010 9:30 pm Post subject:

Apart from the I/O, this is last night and tonight. Not too shabby!

And this is the new DAD, built from kit. Actually, it turned into something of a hatchet job, but all fun.
I had to cut one of the banana bushings in half, so the daughterboard is actually not at a right angle to the other board. This made it impossible to use both mounting brackets. Ahh. We'll see how well it all works tomorrow!

DGTom · Posted: Sat Mar 06, 2010 9:51 pm Post subject:

"one of us one of us"

good work man!

sometimes you need to do wierd things to get it to work, in the case of the DAD I would've substituted the switches for some panel mount toggles & put some spacers in to hold the daughter board away from the panel, may or may not work.

One thing with board mounted parts like that slide switch, if you need to mount them in funny places you can use stripboard & right angle headers etc. to get them off the PCB.

The SPDT C/O on the BZ is well worth it, in fact I'd say even minijackers should do it! Being able to switch the BZ off is great, especially as it kills the Clock Outs so everything down stream can be switched off. Great fun for jamming SlayerBadger!

Ekofisk · Posted: Sun Mar 07, 2010 6:43 am Post subject:

Yes, good call on those switches on the DAD. I think I'll give that a try.

And the BZ, of course.

Ekofisk · Posted: Sun Mar 07, 2010 5:09 pm Post subject:

And it all fucking works!

I discovered a wrongly polarized diode on the I/O just before switching it on. Works like a charm!

Since I do all this DIY stuff at home, and have no real access to the rest of my studio, my patching with these modules is a little limited, but nonetheless, everyone should do this. I don't really have a problem with minijacks, but bananas are WAY cooler.