Circuit Bent Kaossilator with Internal Controls

Previously on GetLoFi we covered adding of the LTC Precision module to control the clock speed of the Kaossilator, thus pitching the device up and down. The only snag with the mod was not having the potentiometer mounter internally. Now that problem has been solved with a daring modification to the device.

There is plenty of space for the potentiometer if you remove an unused part of the output circuit board. The RCA jack board is the same for KP and the KO, however KO does not use the Input side. Carefully remove that section with a Dremel Cutoff disk. You may use the above image and black line as a guide. However do so at your own risk! The RCA jacks were tested and appear perfectly fine on my unit.

Remaining section is shown above.

Once the potentiometer is seated a slight modification to the case is needed in order to properly shut.  Cut away several of the plastic ridges on the inside of the case as well as the plastic holder of now missing Input section. Dremel Sanding cylinder disk works well.

Last step is to drill a hole in the aluminum for the potentiometer shaft. Measure the position of where the hole will go and use ridges as a center guide. Making the hole slightly bigger will help to reassemble the device.

Note that there is a 100k resistor soldered in parallel with the 250k potentiometer used to control the pitch. This is done prevent the pitch from dropping too low and it also gives a very nice usable pitch range.

The kit which includes the potentiometer, wire, and the LTC board is available from the GetLoFi Shop. Good Luck.

[youtube]http://www.youtube.com/watch?v=5qD-v6abHfM[/youtube]

18 thoughts on “Circuit Bent Kaossilator with Internal Controls”

  1. Thanks! Cutting that circuit board was the most difficult decision. Basically its the only option for extra space. So it was make it or break it kind of a deal. Glad it worked out.

  2. pitch modification works with mini-kp too, there’s just nowhere to put the pot, works particuarly well on the patches that sample/stutter, or have their own noise element.

  3. Not sure what the Electribe would do, there is already pitch controls. Give it a try though.

  4. I’m thinking that the pitch mod on the EA-1 and ER-1 might make weird harmonics when shifted low.

  5. What I think I’m going to do in the future for boxes that don’t have enough room for a pot is to run an RCA jack out and have the positive be the +5 and the ground be the other lead and hook it up to an external box.

    I’ve done something similar with DB25 cables and a bunch of Korg DDD-1’s and made cross bending breakout boxes that can bend between 3 machines at once.

  6. Much thanks to the get lofi site. The Mini KP mod works well. Using the above tutorial and chip, did the kaosillator and mini kp mods. THERE IS a slick way to get a little 500K pot in the mini kp. Pictures to follow. davmo.

  7. Hi guys, I´ve been trying to bend my kaossilator with the ltc 1799 kit, i just bought from your site, but when I sold the crystal connection the kaossilator doesn´t work at all.. please help me!!! I did everything as your tutorial explains.. I don´t know what´s going wrong!!!…. Thanks in advance.. P.

  8. That is odd, should work just fine. Kind of hard to say where you went wrong without seeing photos. If you desolder the connections does the pad work? Please reread the article and try the process Again, let is know.

  9. I check the photos carefully, and I´m sure I did it exacltly as your guidelines explains.. If I desold, the pad works ok fortunelly.. I will keep on trying anyway.. and I will let you know if things go fine.. Thanks for your answer.. P.

  10. vinyl grid works awsome, but no matter what I try I can’t get kaoss to turn on the way you show this mod install, maybe better pics so you can see what points are soldered better, personally I feel like risk outweighs reward so this is not a good diy project unless you like throwing money away!

  11. It is very important that you star the Kaossilator with the Pitch control all the way up. Sometimes it will not boot with the pitch is really low, or atleast it will take 30 or more seconds. Turn it on and wait, wait, wait.

    Its possible that the Kaossilator design has changed, however unlikely. Also once in a while LTC modules stop working in which case just drop me and email and we can go from there. Replacing your module is an option.

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