This circuit makes a flower bop to the beat of music. The flower stem contains a crooked wire which is spun by the motor. The circuit is a microphone driven peak-detecting one-shot and works very well. The microphone is in a sponge mount to insulate it from the vibration of the running motor. Similar circuits are used to drive rock'n coke cans:
This is a haloween toy which spins a skeleton or goul in response to a loud noise. The microphone triggers a monostable which makes the geared motor run for a few seconds. Note that when the one shot becomes active it disables the microphone so that the circuit can reset itself:
I do not gaurantee the accuracy or safety of any information herein.
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