Sound Sensor

We have realized Mike Gasperi's Almost Ultrasonic Motion Sensor . Here an additional PC-board. (View from above)


R1, R3, R6, R8 1 kOhm resistor
R2, R4, R5, R7 100 kOhm resistor
R9, R10 33 kOhm resistor
D1-D7 1N4148 diode
C1 100 nF capacitor
C2 6800 pF capacitor
C3 1 mF electrolytic capacitor
C4, C6 33 mF electrolytic capacitor
C5 missing (in Mike's circuit diagram this is the crystal microphone)
IC LM 324
caution do not forget the wire that you should solder on the back of the board. (Ratnest)

The sensor may be used as shown on Mike's page. We used it also as a simple sound sensor.

Here is a photo of our finished sensor and a video of it's function as simple sound sensor.

Click here to see the video.

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