Hello, Arduino community, i am a beginner in Arduino but i already fell in love with the community and the potentials.
I have some background in VBA programming but that's it.
I hope i can find some support and pass it in the future to the next beginners.
I am currently working in a project which uses 2 of HALJIA E18-D80NK Infrared Obstacle Avoidance Sensor and a small Arduino nano with a buzzer,
I want to make a small code module which when the first Ir sensor is triggered if i don't get the second one trigger in a specific period of time, then i would like to activate the buzzer if the second sensor is triggered then the whole thing is reset.
In the future, i want to connect a monitor which counts the times that the 2 sensors are triggered.
(the first and then the second sensor is considered 1 trigger).
=>currently i have some issues with the triggering of the alarm,
i try to use mills due to the fact that i want to monitor the second sensor for a period of time.
Any advice will be welcome, apologise for my mistakes and ignorance in advance.
Until now i have this:
int ledPin = 8; // choose the pin for the LED
int inputPin2 = 2; // choose the input pin (for PIR sensor)
int inputPin3 = 3; // choose the input pin (for PIR sensor)
int pirState = LOW; // we start, assuming no motion detected
int val2 = 0; // variable for reading the pin status
int val3 = 0; // variable for reading the pin status
void setup() {
pinMode(ledPin, OUTPUT); // declare LED as output
pinMode(inputPin2, INPUT); // declare sensor as input
pinMode(inputPin3, INPUT); // declare sensor as input
Serial.begin(9600);
}
void loop(){
val2 = digitalRead(inputPin2); // read input value
val3 = digitalRead(inputPin3); // read input value
if (val2 == HIGH) { // check if the input is HIGH
digitalWrite(ledPin, HIGH); // turn LED ON
if (pirState == LOW) {
// we have just turned on
Serial.println("pin 2 Motion detected!");
// We only want to print on the output change, not state
pirState = HIGH;
}
}
else if (val3 == HIGH) { // check if the input is HIGH
digitalWrite(ledPin, HIGH); // turn LED ON
if (pirState == LOW) {
// we have just turned on
Serial.println("pin 3 Motion detected!");
// We only want to print on the output change, not state
pirState = HIGH;
}
}
else {
digitalWrite(ledPin, LOW); // turn LED OFF
if (pirState == HIGH){
// we have just turned of
Serial.println("Motion ended!");
// We only want to print on the output change, not state
pirState = LOW;
}
}
}