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int val1; int i=1; void setup() { pinMode(11,OUTPUT); // LED Pin Serial.begin(9600); for(i=1;i<=2000;i++){ val1=analogRead(A5); // Value of LDR Serial.println(val1); if(val1<300){ // Threshold digitalWrite(11,HIGH); } else { digitalWrite(11,LOW); } } } void loop() { }