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[on:]

Hello,
I buy a Sound sensor for Arduino on dx.
http://dx.com/p/arduino-microphone-sound-detection-sensor-module-red-135533
But I have a problem.
I use analog Read and I see my sensor stay at 18-19 even if there is no sound or sound.
I don't understand.
Sorry I'm beginner and sorry for spelling mistake.
Thanks

Code:

int U;
const int sensor = 7;
void setup()
{
  Serial.begin(9600);

}
void loop()
{
    U = analogRead(sensor);

    Serial.println(U);
   
    delay(100);
}

[Reply #1 on:]

What kind of arduino do you have? Pin 7, you sure it's analog?

[Reply #2 on:]

I have a Arduino Mega 2560 ... I have already tested with another pin but no results