[circuit-bending]  greenarrow.gif (132 bytes)
a bender's guide

       

[photo resistors]
[circuit bending]
[introduction]
[tools]
[parts]
[exploring the art]
[how it works]
[direct wiring]
[potentiometers]
[capacitors]
[photo resistors]
[solar cells]
[leds]
[humidity sensors]
[body-contacts]
[reset switch]
[line outputs]
[other techniques]
[cautions]
[closing words]
       

These are light-sensitive buttons (at times called "cadmium sulfide cells") with two wire leads. They convert light into electrical resistance, so to speak. They have the same effect upon a circuit as a potentiometer. However, instead of turning a dial to vary the resistance and thereby the sound, hand shadows are allowed to fall upon the photo resistors. These sensors can be used in many wonderful ways, including environmentally directed instrument designs since ambient light and shadow -- tree leaves, water reflections, clouds passing, etc. -- may be employed as player.

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