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- int redled =10; // initialize digital pin 8.
- int yellowled =7; // initialize digital pin 7.
- int greenled =4; // initialize digital pin 4.
- void setup()
- {
- pinMode(redled, OUTPUT);// set the pin with red LED as “output”
- pinMode(yellowled, OUTPUT); // set the pin with yellow LED as “output”
- pinMode(greenled, OUTPUT); // set the pin with green LED as “output”
- }
- void loop()
- {
- digitalWrite(greenled, HIGH);//// turn on green LED
- delay(5000);// wait 5 seconds
- digitalWrite(greenled, LOW); // turn off green LED
- for(int i=0;i<3;i++)// blinks for 3 times
- {
- delay(500);// wait 0.5 second
- digitalWrite(yellowled, HIGH);// turn on yellow LED
- delay(500);// wait 0.5 second
- digitalWrite(yellowled, LOW);// turn off yellow LED
- }
- delay(500);// wait 0.5 second
- digitalWrite(redled, HIGH);// turn on red LED
- delay(5000);// wait 5 second
- digitalWrite(redled, LOW);// turn off red LED
- }
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