in continuation of my last circuit, patrick suggested i use a solenoid to produce audio quality within the circuit. a solenoid is basically a coil that surrounds a metal rod. when the coil is hooked up to a power source, the coil becomes magnetic and will attract the metal rod. when this occurs there is the clicking sound of the metal rod falling into place. further more the attraction between the rod and coil is quit significant.
as seen in the first photo, i have the solenoid wrapped up in an elastic band that is suspended by a spring. when the power is turned off the solenoid will drop, for my purposes i don't want the solenoid to drop off the rod completely. going further with this experiment i fished the solenoid through a bottle because i wanted to amplify the sound of the solenoid clicking on and off.
when testing the solenoid circuit, i found that the turning off and on of the solenoid not only projected sound, but also caused the spring to oscillates up and down which may also present dynamic opportunities.
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