Programming recommendations

Using Arduino Project Guidance
1

I am trying to write code to:
Once an IR is activated (digitalRead IR, LOW)
LED turns on (DigitalWrite LED LOW)
Note: The IR at this point will see some on/off states (NOT DEBOUNCE)
Once the IR sees 10 seconds of no activate
LED turns off (DigitalWrite LED, HIGH)

Is this accomplished with a counter or ?????
Any recommendations or direction will be helpful
Brian K

2

Start with a simple sketch that turns your LED on when the IR is triggered.

Then add functionality that captures millis in a variable when the IR is triggered as well.

if captured time is greater than ten seconds, turn the LED off.

3

To keep the LED pin LOW until the IR pin is HIGH for ten seconds:

const byte LEDPin = 2;
const byte IRPin = 3;
unsigned long IRTimer;

void setup()
{
  digitalWrite(LEDPin, HIGH);  //  LED Off
  pinMode(LEDPin, OUTPUT);

  pinMode(IRPin, INPUT);
}

void loop()
{
  if (digitalRead(IRPin) == LOW)
  {
    // IR Input is ACTIVE
    digitalWrite(LEDPin, LOW);  // LED On
    IRTimer = millis();  // Re-start the IR timer.
  }

  if (millis() - IRTimer > 10000UL)
  {
    // IR Input has been INACTIVE for 10 or more seconds
    digitalWrite(LEDPin, HIGH);  //  LED Off
  }
}