Friday, February 26, 2010

Adam B's Secret Weapon




Testing the finished result. The secret weapon is an analog resampler and analog filter. It is controlled by a variable shape LFO. Wet and dry sounds can be mixed together internally. A preamp is also provided to boost the signal.

Here's some of the build process:


Testing the analog resampler circuit on some Casio drums


Testing the expression pedal control circuit


Testing the entire circuit with the new power supply


Power supply


The analog resampler


Modulation generator on breadboard


Modulation generator circuit board


Modulation board with the preamp and mixer added


Circuit boards mounted on standoffs


Flying wires!


Case drilled


Case labelled


Wiring nightmare!


Compact!

Thursday, February 11, 2010

Circuit Bent Casio SA-40




Here's a circuit bent Casio SA-40. A button was added which allows for selecting hidden instruments, which greatly increases the amount of sounds this keyboard can make. An adjustable crash button allows for the traditional Casio glitch stream. A feedback knob allows the sounds to be overdriven.

See this post on circuitbenders.co.uk for information about the hidden instrument bend.