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SAM_Project.cpp
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SAM_Project.cpp
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const int pir1 = 8;
const int pir2 = 10;
const int pir3 = 12;
const int led1 = 2;
const int led2 = 4;
const int led3 = 6;
const int ldrPin = A0;
void setup() {
pinMode(pir1, INPUT);
pinMode(pir2, INPUT);
pinMode(pir3, INPUT);
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
pinMode(led3, OUTPUT);
Serial.begin(9600);
}
void loop() {
int pir1val = digitalRead(pir1);
int pir2val = digitalRead(pir2);
int pir3val = digitalRead(pir3);
int ldrValue = analogRead(ldrPin);
if (ldrValue > 750) {
if (pir1val == LOW && pir2val == HIGH && pir3val == HIGH) {
digitalWrite(led1, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led3, LOW);
Serial.println("Motion detected by PIR 1!");
}
else if (pir1val == HIGH && pir2val == LOW && pir3val == HIGH) {
digitalWrite(led2, HIGH);
digitalWrite(led1, LOW);
digitalWrite(led3, LOW);
Serial.println("Motion detected by PIR 2!");
}
else if (pir1val == HIGH && pir2val == HIGH && pir3val == LOW) {
digitalWrite(led3, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led1, LOW);
Serial.println("Motion detected by PIR 3!");
}
else if (pir1val == LOW && pir2val == LOW && pir3val == LOW) {
digitalWrite(led3, HIGH);
digitalWrite(led2, HIGH);
digitalWrite(led1, HIGH);
Serial.println("Motion detected by all PIRs!");
}
}
else {
digitalWrite(led1, LOW);
digitalWrite(led2, LOW);
digitalWrite(led3, LOW);
//Serial.println("No motion detected or it's too bright.");
}
delay(200);
}