arduino mega, pir, led

Projects Programming
1

i did a security system with arduino mega and there was a problem writing the code, the led light last turned on with the monitor, mega restart or arduino

int lithLed = 8;    int redLed = 7; int yellowLed = 6; int greenLed = 5;
int sensor = 22;  int sensor1 = 24;  int sensor2 = 26;  int sensor3 = 28;            
int state = LOW;  int state1 = LOW;  int state2 = LOW;  int state3 = LOW;               
int val = 0;         int val1 = 0;          int val2 = 0;          int val3 = 0;          

void setup() {
  Serial.begin(9600);
  pinMode(redLed, OUTPUT);  pinMode(yellowLed, OUTPUT);  pinMode(greenLed, OUTPUT);  pinMode(lithLed, OUTPUT);
  pinMode(sensor, INPUT);  pinMode(sensor1, INPUT);  pinMode(sensor2, INPUT);  pinMode(sensor3, INPUT);

}
void loop() {

  val = digitalRead(sensor);   
  if (val == HIGH) {          
    digitalWrite(redLed, HIGH); 
    delay(50);            
    if (state == LOW) {
      Serial.println("Motion detected!");
      state = HIGH;       
    }
  }
  else {
    digitalWrite(redLed, LOW); 
    delay(100);          
    if (state == HIGH) {
      Serial.println("Motion stopped!");
      state = LOW;    
    }
  }

  val1 = digitalRead(sensor1); 
  if (val1 == HIGH) {     
    digitalWrite(yellowLed, HIGH); 
    delay(50);             
    if (state1 == LOW) {
      Serial.println("Motion detected! 1");
      state1 = HIGH;
  }
  else {
    digitalWrite(yellowLed, LOW);
    delay(100);
    if (state1 == HIGH) {
      Serial.println("Motion stopped!");
      state1 = LOW;  
    }
  }
  val2 = digitalRead(sensor2); 
  if (val2 == HIGH) {    
    digitalWrite(greenLed, HIGH); 
    delay(50);              
    if (state2 == LOW) {
      Serial.println("Motion detected! 2");
      state2 = HIGH;       
    }
  }
  else {
    digitalWrite(greenLed, LOW);
    delay(100);

    if (state2 == HIGH) {
      Serial.println("Motion stopped!");
      state2 = LOW;   
    }
  }
  val3 = digitalRead(sensor3);
  if (val3 == HIGH) {  
    digitalWrite(lithLed, HIGH);   
    delay(50);         
    if (state3 == LOW) {
      Serial.println("Motion detected! 3");
      state3 = HIGH;  
    }
  }
  else {
    digitalWrite(lithLed, LOW);
    delay(100);            
    if (state3 == HIGH) {
      Serial.println("Motion stopped!");
      state3 = LOW;    
    }
  }


}

i add breadboard.

Untitled.jpg
Untitled.jpg935×563 189 KB

2

Please form your post in the form of a question that can be answered or problem that can be addressed. I am not sure what it is that you are wanting.

3

Perehama:
Please form your post in the form of a question that can be answered or problem that can be addressed. I am not sure what it is that you are wanting.

hi when i restart arduino automatically turns on led though shouldn't

4

I have been known to defend the use of Fritzing diagrams when people post them instead of a circuit diagram, but yours takes confusion to a new level

Perhaps if you don't want the LEDs to be on you could turn them off in setup()