Knock detector circuit

A70Duster at aol.com A70Duster at aol.com
Mon Jan 7 20:20:12 GMT 2002


Does anybody have a schematic for making a knock detector circuit.  I'm 
guessing the circuit would have a front end band pass filter of 4k to 7k 
Hertz.  Then that signal could be used to trigger a 555 timer that could 
flash a light/LED.

It's on a SBC, 4.04" bore, 3.75" stroke.

Something simple and I don't want to reinvent the wheel.

Thanks!

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