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 Forum index » DIY Hardware and Software » Circuit Bending
Casio SA-2 Bend
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stolenfat



Joined: Apr 17, 2008
Posts: 476
Location: Sunny Oakland California
Audio files: 1

PostPosted: Sun Sep 07, 2008 1:03 am    Post subject: Casio SA-2 Bend Reply with quote  Mark this post and the followings unread

my new bend I did in one night. I read up on r gazala's bend notes of the SA-2 and he was right, the keyboard is really touchy and crashes ALOT. I used the basic premise of his bend notes but used different solder points which i thought worked better, he suggested using body contacts to help glitch the thing but i didnt find any use for em. He also only used a 1 meg pot, which i thought was way way to big and dumbed it down to a few 10 and 5k pots.
Or maybe the 10 K pot was the one i broke and replaced it with a 50k, anyways it sounds pretty good.

This little fucker is small as shit and there was practically no room at all to fit the stuff i wanted to add in there and as a result the keys dont lay right and its kinda warped in the middle, but still looks pretty groovy. Heres some pictures.

About the bends....
the two knobs on the right side replaced the speaker, i usually like to leave the speaker in there but had to sacrifice it for space. They're both distortion/filter knobs which crank the gain up and add alot of cool timbres to the noise. The top is more of a treble boost, and the bottom is more bassy. Upon full turns, the noise filters in a pure merzbow kinda sound. Half turns result in converting the notes and patterns to harsh glitch beeps

The other stuff are glitch buttons. Reed g wrote you just have to tap em real fast other wise they'd kill the thing and he was right, holding them down is no good. Some time though after it crashes you can press them rapidly to wake the SA-2 up again with out a reset. The 3 buttons are wired to pots to affect the glitches and often times make the thing trip out wildly or crash it. One button is a cool lofi filter which can be played percussively or just held, no fear of a crash. Plus a red LED which blinks to the madness

The paint job turned out great, i experimented with holding 2 cans of spray paint (orange and yellow) and using them at the same time to make some cool gradients- definitely a technique i'll use again. The keys were done with a metalic silver paint which takes FOREVER to dry (and still isnt quite dry yet) hence all the finger prints because i just couldnt wait.

Any day now i'll have to open it up and repaint the keys and possibly add a reset switch if i can find the space and figure out how to- the batteries connect right to metalic rods springing from the board.

over all a very slick bend to add to the pile


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stolenfat



Joined: Apr 17, 2008
Posts: 476
Location: Sunny Oakland California
Audio files: 1

PostPosted: Wed Dec 31, 2008 12:21 am    Post subject: Reply with quote  Mark this post and the followings unread

wooosh im low on money and need to buy some logic chips, any one want to buy my sa-2 for 50 bucks?
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