P09 Description: For sound detection module has two outputs: 1. AO, analog output, real-time output voltage signal of the microphone 2. DO, when the sound intensity reaches a certain threshold, the output high and low signal Module features: 1. there is a mounting screw hole 3mm 2. the use 5v DC power supply 3. with analog output 4. there are threshold level output flip 5. high sensitive microphone and high sensitivity. 6. a power indicator light 7. the comparator output is light Digital Output: int Led=13;//define LED interface int buttonpin=3 //Define D0 Sensor Interface int val;//define numeric variables val void setup() { pinMode(Led,OUTPUT);// Define LED as output interface pinMode(buttonpin,INPUT);//Define D0 Sensor as output Interface } void loop() { val=digitalRead(buttonpin);//digital interface will be assigned a value of 3 to read val if(val==HIGH)//When the light sensor detects a signal is interrupted, LED flashes { digitalWrite(Led,HIGH) } else { digitalWrite(Led,LOW) } } 2.Analog Output: int sensorPin = A5; // select the input pin for the potentiometer int ledPin = 13; // select the pin for the LED int sensorValue = 0; // variable to store the value coming from the sensor void setup() { pinMode(ledPin, OUTPUT); Serial.begin(9600); } void loop() { sensorValue = analogRead(sensorPin); digitalWrite(ledPin, HIGH); delay(sensorValue); digitalWrite(ledPin, LOW); delay(sensorValue); Serial.println(sensorValue, DEC); }