Piezo Vibration Sensor using LM393 as the A/D converter

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Ray116
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Joined: Wed Dec 13, 2017 2:19 am

Piezo Vibration Sensor using LM393 as the A/D converter

Post by Ray116 » Wed Dec 13, 2017 2:27 am

After purchasing SEN-09196 Piezo Vibration Sensor, I decided the use the below circuit with the help of LM393 as the voltage comparator so that the digital input signal can be sent to the arduino.
Image

However, after I replace the vibration sensor at the position 傳感器, there is no digital output signal come out from the DO pin when I try to deflect the sensor. Can anyone explain the reason? Is it the signal voltage too low for the LM393?

Valen
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Joined: Wed Dec 22, 2010 2:05 am

Re: Piezo Vibration Sensor using LM393 as the A/D converter

Post by Valen » Thu Dec 21, 2017 3:56 pm

Did you adjust the potentiometer and noticed a change in the output?

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