Noise box will scare you and the neighbor’s cat

Music Technology
Noise box will scare you and the neighbor’s cat
noisebox.jpg

This “Noise Box” is based on the gating properties of the 4066 Quad Switch and is amplified with an LM324 Quad op-amp to produce some truly horrifying noise. “Sound” would be too pretty a word to call the sonic mess this device creates. The project runs off of two sets of 9 volt batteries while there are a couple RCA jacks for the sound to output to an amplifier if you feel like waking up the entire neighborhood and converting this to an alarm clock.

Noise Box

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