- /*
- 【Arduino】37种传感器模块系列实验(34)
- 实验三十四:三色LED交通灯模块(红绿黄灯)实验之二
- */
- int redled =11;
- int yellowled =12;
- int greenled =13;
- void setup()
- {
- pinMode(redled, OUTPUT);
- pinMode(yellowled, OUTPUT);
- pinMode(greenled, OUTPUT);
- }
- void loop()
- {
- changeLights();
- delay(15000);
- }
- void changeLights()
- {
- digitalWrite(greenled, LOW);
- digitalWrite(yellowled, HIGH);
- delay(3000);
- digitalWrite(yellowled, LOW);
- digitalWrite(redled, HIGH);
- delay(5000);
- digitalWrite(yellowled, HIGH);
- delay(2000);
- digitalWrite(yellowled, LOW);
- digitalWrite(redled, LOW);
- digitalWrite(greenled, HIGH);
- delay(3000);
- }
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