int Threshold1 = 600; int Threshold2 = 300; int Threshold3 = 200; int ReadPin = A0; int LedPin1 = 7; int LedPin2 = 8; int LedPin3 = 9; int Led1; void setup() { Serial.begin(9600); pinMode(LedPin1, OUTPUT); pinMode(LedPin2, OUTPUT); pinMode(LedPin3, OUTPUT); } void loop() { int Sensor1 = analogRead(ReadPin); Serial.println(Sensor1); if(Sensor1<=Threshold1 && Sensor1>Threshold2){ digitalWrite(LedPin1, HIGH); digitalWrite(LedPin2, LOW); digitalWrite(LedPin3, LOW); } else if(Sensor1<=Threshold2 && Sensor1 > Threshold3){ digitalWrite(LedPin1, HIGH); digitalWrite(LedPin2, HIGH); digitalWrite(LedPin3, LOW); } else if(Sensor1<=Threshold3){ digitalWrite(LedPin1, HIGH); digitalWrite(LedPin2, HIGH); digitalWrite(LedPin3, HIGH); } else{ digitalWrite(LedPin1, LOW); digitalWrite(LedPin2, LOW); digitalWrite(LedPin3, LOW); } //Serial.print("Led = "); //Serial.println(LedPin); delay(100); }