Phần cứng cần thiết:
Code:
//define the pins
int Load = A1;
int PIR = A0;
int pirState = 2;
void setup() {
//define the Relay pin as output
pinMode(Load, OUTPUT);
pinMode(pirState, OUTPUT);
Serial.begin(9600);
//define the sensor pin as input
pinMode(PIR, INPUT);
}
void loop() {
//using the digitalRead function we will read the signal of the sensor
int value = digitalRead(PIR);
//if its high or if an any object is detected it will activate the Relay Module
if (value == HIGH){
Serial.println("Phat hien chuyen dong !!!");
bat_Den();
digitalWrite(pirState, HIGH); //For activating the Relay we will send a LOW as the Relay input pin works inversely.
delay(1000);
}
else {
//digitalWrite(LED, LOW);
tat_Den();
digitalWrite(pirState, LOW);
Serial.println("Khong phat hien chuyen dong");
delay(1000);
}
}
void coi_bao()
{
digitalWrite(Load, HIGH);
delay(250);
digitalWrite(Load, LOW);
delay(250);
}
void bat_Den(){
digitalWrite(Load, HIGH);
}
void tat_Den(){
digitalWrite(Load, LOW);
}
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