Random Number Generator mod for Noisecians

[Koji Kusanagi]

Hi,

Recently I made a mod of mid-fi electronics Random Number Generator for Noisecians.

I really love screeching, unstable harsh noise.
In order to generate more noise, I added a SPDT Toggle /w center-off switch for replacing 2.2M resistor by a .01 capacitor, or simply removing.
This tweak makes 3 different texture on the top of the note.

Also added 1N60P diode in parallel, and SPDT switch (inside the enclosure, on-board) makes enable/disable it. This makes oscillation harder and happens to create some uncontrollable strange decay.

Added 2 pots, one for feedback resistor 100k linear, another for battery starve 100k linear for more instabilities.


This mod is very nice for me but sounds different from original, so I named it after RNG, called "Really Nice Guy".
I hope someone may be interested in.

Thanks for everyone, and of course tons of thanks for Doug Deeper.



Schematics:


Demos:
http://www.youtube.com/watch?v=lNy0aWxEjiY
http://www.youtube.com/watch?v=OotXBMiVW9w

[soggybag]

Right on! Sounds very cool. I love the complete and utter destruction of tone. With great arpeggiation. Do you have a layout for this?

[rousejeremy]

That is awesome. It would be so fun to show up for and audition with something like this.

[Slade]

Hey, really nice mods! Thanks for sharing, I might build this pedal in a time.

btw... WELCOME TO THE FORUM!

[glops]

sounds kicka$$!!!

[waltk]

I'm speechless.

[DC9V]

Wow.





This suddenly got propelled to the top of my to-do list. It makes my Dirty Bird sound pretty tame in comparison

[Koji Kusanagi]

Hi soggybag, rousejeremy, Slade, glops, waltk, DC9V!
Thanks for welcoming me!
It'll be the next big engine of building another one.

Now, today I have the 3rd demo, with 1N60P turned ON. (was off in previous 2 videos)
http://www.youtube.com/watch?v=ZAsDnJ0T_SA


Personal replies:

Right on! Sounds very cool. I love the complete and utter destruction of tone. With great arpeggiation. Do you have a layout for this?

Yes I have the layout... but I wouldn't recommend mine, because I made it quite ad-hocly. Please refine it

That is awesome. It would be so fun to show up for and audition with something like this.

I've watched your movie on youtube. It motivated me, thanks.

[Koji Kusanagi]

If you want to make it stabler, you may replace those parts.

i) one of 2N3904 -> BC337
Shorter decay, no persistent oscillation. Sounds much like 8-bit.

ii) 2SC1815 BL -> 2SC2240 BL
Lower noise level.

iii) C5 in the layout .01uf -> .1uf
Less screeching. Avoid producing supersonic wave, less harm to your cat.

iv) Adding some resistor in serial to feedback pot
Less oscillation in BAD or SAD mode without diode.

I did not chose those canditates but they may be better for others.

[doug deeper]

awesome! 

[Koji Kusanagi]

Wow! Hi Doug!
Nice to see you here and thanks a lot for giving us your outstanding ideas.
I've been inspired very much from your pedals.

By the way, a friend of mine is intrested in this one.
I'm going to brush it up and build another one for him soon.