Is the sound sensor broken?

Other Hardware Sensors
1

Hi,

I'm very new to this.
I connect the sound sensor to Arduino Uno, but two led on sensor always on. I know one is the power led, it should be on always. I rotate the potentiometer but the other always on, is the sound sensor broken?

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IMG_20240407_1534461920×1442 193 KB

2

We can do a test to double check.
Run this code.
If the output on the serial monitor is always 0 when you turn the pot, then I think it is bad

void setup() 
{
  Serial.begin(9600);
  pinMode (5, INPUT);
}

void loop() 
{
  int x = digitalRead(5);
  Serial.println (x);
  delay(250);
}
3

I think these operate on "active = low"... but as with all things, "depends on manufacturer."

4

See if this tutorial help:

5

That might be correct that might be wrong. What sensor did you use, there are several and how did you connect it, the picture is not clear. A simple schematic, not a frizzy would help us help you.

6

After I test, I think it is broken.
Thank you.

7

You need a different test that can definitely tell you if it is broken, or possibly not understood.

8

Exactly what sound sensor is this?

Did you get complete specs or did you buy it from eBay or Aliexpress or something?

There are 3 or 4 different "kinds" of sound sensors, and of course even more manufacturers and variations.

And what are you trying to do? We need to make sure you have the right kind of sound sensor...

9

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