// ==================================================== // ArduExams Copyright(C) 2018 Furkan Türkal // This program comes with ABSOLUTELY NO WARRANTY; This is free software, // and you are welcome to redistribute it under certain conditions; See // file LICENSE, which is part of this source code package, for details. // ==================================================== #define PIN_LDR A3 #define PIN_LED1 4 #define PIN_LED2 5 #define PIN_LED3 6 float LDR_Value = 0.0; void setup() { pinMode(PIN_LDR, INPUT); pinMode(PIN_LED1, OUTPUT); pinMode(PIN_LED2, OUTPUT); pinMode(PIN_LED3, OUTPUT); Serial.begin(9600); } void loop() { LDR_Value = analogRead(PIN_LDR); if (LDR_Value > 800){ digitalWrite(PIN_LED1, LOW); digitalWrite(PIN_LED2, LOW); digitalWrite(PIN_LED3, LOW); } else if (LDR_Value > 600){ digitalWrite(PIN_LED1, HIGH); digitalWrite(PIN_LED2, LOW); digitalWrite(PIN_LED3, LOW); } else if (LDR_Value > 400){ digitalWrite(PIN_LED1, HIGH); digitalWrite(PIN_LED2, HIGH); digitalWrite(PIN_LED3, LOW); } else if (LDR_Value > 200){ digitalWrite(PIN_LED1, HIGH); digitalWrite(PIN_LED2, HIGH); digitalWrite(PIN_LED3, HIGH); } Serial.print("Light Intensity = "); Serial.print(LDR_Value); Serial.println(); delay(1000); }