LEDs blinking duration and without motion

Using Arduino LEDs and Multiplexing
7

HKJ-lygte:
Turn the timer on the PIR all the way down, as short as possible then try something like this:

#define inputPin 3

#define ledPin 13

unsigned long timer;

void setup() {
  //Serial.begin(9600);
  pinMode(ledPin, OUTPUT);
  pinMode(inputPin, INPUT);
  timer = millis();
}

void loop() {
  // When PIR active set timer to 0.1 second
  if (digitalRead(inputPin)) timer = millis() + 300;

// When timer is active the output will be turned on
  digitalWrite(ledPin,timer>millis());
}





It uses a timer to maintain output on without interruptions as long as the PIR signals movement, depending on how fast the PIR changes it output you may have to increase the "+ 300" value.

Thanks for your reply, will implement your code. I have already reduced the timer to the minimum( which one article states was 3 seconds for the sensor I.e the LED will stay on for 3 seconds) will let you know how it goes.
But before that could you please explain your code a little more?

Thanks