RELAY繼電器

https://circuitdigest.com/microcontroller-projects/ir-controlled-dc-motor-using-arduino

https://tutorials.webduino.io/zh-tw/docs/basic/component/relay.html

const int relayPin=13; // 繼電器(Relay)

const int IN1=12; //IN1 輸入

int relayState=0; // 繼電器狀態

void setup() 

{

  Serial.begin(9600); // 開啟Serialport, 通訊速率為9600bps

  pinMode(relayPin,OUTPUT); // 把relayPin 設置成OUTPUT

}

void loop()

{

  Serial.println(“FAN is on”); // 風扇啟動

  digitalWrite(relayPin,HIGH);

  digitalWrite(IN1,HIGH);

  delay(5000);

  Serial.println(“FAN is off”); // 風扇停止

  digitalWrite(relayPin,LOW);

 digitalWrite(IN1,LOW);

  delay(5000);

}