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- int led1 = 2; // กำหนดขาใช้งาน
- int led2 = 3;
- int led3 = 4;
- int led4 = 5;
- void setup()
- {
- pinMode(led1, OUTPUT); // กำหนดขาทำหน้าที่ OUTPUT
- pinMode(led2, OUTPUT);
- pinMode(led3, OUTPUT);
- pinMode(led4, OUTPUT);
- }
- void loop()
- {
- digitalWrite(led1,HIGH); // ไฟ LED 1 ติด 500 ms
- delay(500);
- digitalWrite(led1,LOW); // ไฟ LED 1 ดับ500 ms
- delay(500);
- digitalWrite(led2,HIGH);
- delay(500);
- digitalWrite(led2,LOW);
- delay(500);
- digitalWrite(led3,HIGH);
- delay(500);
- digitalWrite(led3,LOW);
- delay(500);
- digitalWrite(led4,HIGH);
- delay(500);
- digitalWrite(led4,LOW);
- delay(500);
- }
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