Circuitbenders Forum
Circuitbenders Forum => Drum machines => Circuitbending discussion => Korg => Topic started by: noiseybeast on May 08, 2010, 05:20:36 AM
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Here are some things I've been working on.
The Beast's Retro Bent Korg DDD-1 w/pitch control PT1. (http://www.youtube.com/watch?v=5D2Ga5znbWk#lq-lq2-hq-vhq)
80's Circuit Bent Korg DDD-1 Tech Demo part 1 (http://www.youtube.com/watch?v=NhhWhBh2Bg0#lq-lq2-hq-vhq)
Let me know what you think!
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Here's a new one. It's two bent DDD-1's. They're both modded with parts from the 80's or earlier so that anything you can touch on the mod would have been available during the time the unit was manufactured. The idea being that the bending could have happened back in the day.
I've got them midi'd up together and the non pitch modded unit is acting as master.
I cross bend the units using RCA jacks. As you get more crossbending you start to hear that the bends+ pitch control on one unit affect the sound the other is making. Effectively you can use one unit as an effects unit for another.
2x DDD-1 retro cross bending + midi synced (http://www.youtube.com/watch?v=y78DdwddOgw&feature=channel#lq-lq2-hq-vhq)
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I'd be happy to share my technique or answer any questions, if there's anybody out there.
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Is anybody here anymore?
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Nobody Cares, Moby. Nobody cares. No one.
Nobody Cares Moby! (http://www.youtube.com/watch?v=mEfo080ryB4#lq-lq2-hq)
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haha.. love it!
im sure people care noiseybeast!
i care! lol we all care really! .,.... i just hav'nt got a korg ddd 1... ahwell! :(
now if you have any bends for a yamaha pss 11 id be interested!
pah!
:P
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Very nice bend indeed. I'll have to get one of those to experiment on, too.
Thanks for posting!
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how is the pitch control done?
i have been trying to figure it out, but i can't.
thanks a lot.
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LTC1799
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oh sorry, i meant where do i drop it in?
really appreciate your help!
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i'm not entirely sure on a DDD1 as i've never done it, but theres a general guide to building and installing LTC1799's on the main site:
http://www.circuitbenders.co.uk/tutorials/LTCinstallation1.html (http://www.circuitbenders.co.uk/tutorials/LTCinstallation1.html)
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It's the crystal below all of the socketed roms, to the left of a couple of IC's. It is pretty easy to spot.
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Does it clock the whole system or just the samples?
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big thanks to the beast - i found it... cool
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Does it clock the whole system or just the samples?
Just the samples. Neat thing is that you can almost crash the thing if you bring the sample rate too low-but then it tries to catch up.
You get a pretty annoying high pitched wine at lower sample rates-other than that this beast is a dream to mess with-there are blank solder points connected to nearly all of the bendable points so you don't even have to take it apart completely to bend.
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hi! on the DDD-1 there are two of them -
is it the one thats labeled x1 on the pcb or x2?
i tried x2 - but somehow it doesnt work right ...
thanks
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Hi all of you!
sadly i'm having a problem with the installation of a LTC1799 PITCH CONTROL to my ddd-1:
the module works fine, i guess - i'm powering it on 5v - i double checked the power supply by using an external one.
i found the ceramic oscillator (X2 on the pcb) and desoldered it -
so there are then two wholes on the pcb left -
without the ceramic oscillator i do hear high and glitchy sounds.
if i connect the output of the LTC1799 to the first nothing happens (the glitchy sounds stay as they are)
if i do so on the second, then every sound is gone...
does anyone have an idea what to do?
thanks :-*
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If i recall correctly the ceramic resonator you want is at the front of the machine on the left, under the ROM card board right next to the sound ROM's and their controller IC
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Yes it is right there - the position on the pcb is labeled x2 - a orange coloured keramic oscillator ...
somehow doing this mod doesnt work...
do i have to leave the the ceramic oscillator on its place and just bend one leg up, similar like in the circuitbenders.co.uk decription-
even if i dont want to reuse it?
what does the other leg do? if i take it out completely do i have to do anything with the other solderpoint to make it work?
any ideas what went wrong?
thanks
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HI!
just succeeded with the LTC1799 OSCILLATOR mod on my ddd-1
thing is that the resonator alone is not the whole oscillator
https://de.wikipedia.org/wiki/Keramikresonator#/media/File:Pierce-Oszillatorschaltung-3.png
:) ::)
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thing is that the resonator alone is not the whole oscillator
All ceramic resonators have at least those two caps as a minimum. They're C22 and C25 on the DDD1. If you look at the DDD1 schematic you can see X2 is connected directly to two pins of the gate array at IC22 with what looks like R156 in parallel, Just removing the ceramic resonator completely and wiring the LTC output into one of its vacant solder points should work
The most common reason for an LTC not working is either not setting the frequency divider right, wiring the power up wrong, or having the frequency set too high when you first connect it, so the machine immediately crashes when you start it up.
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i was shure that my oscillator was working right - and somehow i got to leave the resonator in its place to make everything work...
anyway thanks for the support!