All the controls, like the switches, pots, knobs, speaker.
Inside are a few oscillators made of simple transistors.
I noticed some SK1's in this topic.
Here are my modded Casio Twins :
Another instrument I bended : the Randrum.
Originally one of the first analog drum devices.
A small box with 3 knobs : volume, speed, and a switch with 6 different rhythms.
It had one noise generator used for both snare and hihat, and a low sine resonator for the kick.
This bending went out of hand a bit. The front can be seen here
And this is the back :
Yes indeed. The love for electronic music. It took more than a year to build this.
My first reason to bend this, was the need to get an external clock to drive the thing.
Because I wanted to get it synced with the sequencer of my AKS.
But I had no circuit diagram.
So I had to make a drawing of both sides of the PCB, compile the schematics out of that,
and isolate the different sections with a specific function. A close example of such drawing :
I really dig the casio twins Sam_Zen and the randrum is jaw dropping. So many tie in points. I can't imagine how many total hours you spent in front of that. You definitely put yourself into your work and it shows in the final product. That front panel is ridiculous. Is that circuit diagram drawn on a napkin?
Not a napkin, but on a piece of paper thin enough to draw the PCB of the same location on both sides.
As soon as I had isolated the functions and the matrix of the rhythm switch, I could add volume sliders,
and started duplicating f.e. the circuit of the bass drum oscillator, to get other percussion frequencies.
There are two basic components when circuit bending : Resistors and Capacitors.
Resistors represent the element of power, capacitors represent the element of frequency.
So changing a resistor means changing the strength of some signal.
Changing a capacitor means changing some central frequency in the formula, so e.g. another filter or oscillation.
Even if, during a simple circuit bending, one connects one point straight to another, and see what happens,
one uses in fact a resistor of zero Ohms. _________________ 0.618033988
Joined: Nov 05, 2009 Posts: 12 Location: Long Beach, Ca
Posted: Wed Jan 06, 2010 6:07 pm Post subject:
Alesis HR-16 I just finished..
I just finished this one up after a few months on the shelf, new battery, fresh (or at least new) paint, and 30 patch points for Bent Drum Madness!!
http://www.youtube.com/watch?v=r6aPjvO-xmM _________________ _
If you develop an ear for sounds that are musical it is like developing an ego. You begin to refuse sounds that are not musical and that way cut yourself off from a good deal of experience.
- John Cage
Well, this isnt technically mine, but its pretty interesting anyway. its a keytar made out of a children's keyboard and a cheap guitar hero controller knock-off from aldi. every sound heard in the song was made with the keytar.
Posted: Tue Sep 14, 2010 6:37 pm Post subject:
RX7 as a keyboard controller and sequencer.
Besides being very much circuit bent, this RX7 functions as a sequencer and a keyboard controller for the NES... I have felt throughout circuit bending that these machines go together well, and as a result this is the third generation of this setup. If you like the looks of these, feel free to check out the sound samples.
Posted: Thu Mar 24, 2011 7:04 am Post subject:
Circuit Bent Roland TR-626
Here's one I did a few years ago with help from the Burnkit 2600 site. The 626 has a 32 point IC chip with all the samples. Simple connections make it bend. I made an RCA patch bay that connects to a DB25 printer port. This video really only skims the surface, there's many more bends and multiple bends at once are also possible.
Here's a "Techno-Beat" toy keyboard. Didn't expect much out of this one, but it ended up making some pretty cool sounds IMO. Only 5 bent controls.
Plus, as usual I accidentally made a radio - but I decided to keep it this time.[/url]
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