#include SoftwareSerial mySerial(4,1); // RX, TX const int ledPin = 5; const int ldrPin = 0; void setup () { mySerial.begin(19200); pinMode(ledPin, OUTPUT); pinMode(7, OUTPUT); pinMode(6, OUTPUT); pinMode(ldrPin, INPUT); } void loop() { int ldrStatus = analogRead(ldrPin); mySerial.println(ldrStatus); if (ldrStatus <= 600) { digitalWrite(ledPin, HIGH); digitalWrite(6, HIGH); digitalWrite(7, LOW ); } else { digitalWrite(6, LOW); digitalWrite(7, LOW); digitalWrite(ledPin, LOW); } }