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