Transducer analog input

Other Hardware Sensors
1

Hello! I am trying to understand values a transducer is giving me for testing its response to certain sound inputs. I put in this code

void setup() {
  Serial.begin(9600); // Start the serial communication
}

void loop() {
  int sensorValue = analogRead(A0); // Read the analog input on pin A0
  Serial.println(sensorValue); // Print the value to the Serial Monitor
  delay(1000); // Wait for a second before reading again
}

and while it prints out an analog value every second as intended, it starts around 800 or 900 and decreases by 14-17 increments every second until it gets to zero, and then it stays at zero (until I reset it, then this whole process begins again).
I cannot for the life of me figure out why. Does anyone have any suggestions?? Thank you so much!

2

Not much to the code. So what exactly is going into A0?

Ron

3

Did you miss the request to read the how to grt the most of the forum when you signed up. >>>> How to get the best out of this forum

What Arduino board?

What sensor? Output sample?

How about a schematc and data sheets?

1 Like
4

Are the grounds connected?

5

Not without knowing what the transducer is.

6

such as? please provide a link.
And a schematic

7

You have the transducer connected backwards.
You connected it to the wrong supply voltage.
You have a loose connection.
That's the way the transducer is supposed to work.
The transducer outputs an AC voltage (+/-)
The transducer is broken.

8

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