Tag: circuit bending

Circuit bending an old crappy Radio Shack pedal

I picked this up at a yard sale thinking it was maybe an actual reverb pedal, but when I tried it at home it was just a very short delay pedal, which I already had. So it sat on my shelf for a bit before I remembered that I have the tools to alter electronics, sometimes for the better.

The first step was to desolder the sliders on the board and replace them with pots. I also sacrificed the battery bay (because 6 AAs??). Then I had plenty of room for knobs and switches.

Bending this was pretty straight forward, in that if I found a bend I’d usually incorporate it. Bends on somewhat simple hardware have a way of interacting that’s impossible to discover without soldering.

Here’s the plate once I drilled (too many) holes:

And here’s the board once I soldered it:

Designing the face plate on a computer and gluing the printout to the metal was a first for me. In retrospect, since there are many ways bends interact, I’d make the face plate without labels to make it a little more exploratory and experiential. I’d also use thicker paper.

The original sliders live on as the bottom row of knobs. I found two distortions and an actual reverb (two other kinds of pedals!!) as well as a couple sometimes-useless others. Have a listen! (The initial sound is the dry signal.)

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Circuit bending the Casio PT-100

angle2

I’ve had this keyboard lying around for years (I don’t remember where or when I got it), and after my first bend I wanted to dive a little deeper.

After experimenting I read the writeup at tablehooters and found the chord modes, rhythm select, and sustain mode. I find the prospect of adding functionality that exists in the hardware but simply wasn’t built into the keyboard really exciting. I couldn’t really add more keys and the extra tone selection seemed convoluted. I also read the noystoise article which hinted at a tone select function but couldn’t find it for the life of me. I did discover a fill button which I added on the far left. [Continue reading…]

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I opened up a gifted keyboard and found an alligator clip and a potentiometer still in the case. So I started poking around and had a lot of fun! This is my first bent keyboard. I really enjoyed making this and I’m currently working on another more ambitious project.

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