int x = 0; int sound; int led1 = 5; int led2 = 6; int led3 = 7; int led4 = 8; int led5 = 9; void setup() { pinMode(led1, OUTPUT); pinMode(led2, OUTPUT); pinMode(led3, OUTPUT); pinMode(led4, OUTPUT); pinMode(led5, OUTPUT); Serial.begin(9600); } void loop() { sound = analogRead(x); Serial.println(sound); if (sound > 30) { digitalWrite(led1, HIGH); delay(20); } if (sound < 30) { digitalWrite(led1, LOW); } if (sound > 100) { digitalWrite(led2, HIGH); delay(20); } if (sound < 100) { digitalWrite(led2, LOW); } if (sound > 150) { digitalWrite(led3, HIGH); delay(20); } if (sound < 150) { digitalWrite(led3, LOW); } if (sound > 200) { digitalWrite(led4, HIGH); delay(20); } if (sound < 200) { digitalWrite(led4, LOW); } if (sound > 250) { digitalWrite(led5, HIGH); delay(20); } if (sound < 250) { digitalWrite(led5, LOW); } delay(10); }