Seeed Grove Beginner Kit - Page 39

Software Code
Open Arduino IDE.
Copy the following code, click Verify to check for syntax errors. Verify that there are no
errors, and you can upload the code.
//Sound Control Light
int soundPin = A2; // Analog sound sensor is to be attached to analog
int ledPin = 4; // Digital LED is to be attached to digital
void setup() {
pinMode(ledPin, OUTPUT);
Serial.begin(9600);
}
void loop(){
int soundState = analogRead(soundPin); // Read sound sensor’s value
Serial.println(soundState);
// if the sound sensor’s value is greater than 200, the light will be o
n for 5 seconds.
//Otherwise, the light will be turned off
if (soundState > 200) {
digitalWrite(ledPin, HIGH);
delay(100);
}else{
digitalWrite(ledPin, LOW);
}
}
You can also see the light intensity readings from the Serial Monitor, navigate to Tools -> Serial
Plotter.
38
Grove Beginner Kit For Arduino®