// LCD1602 to Arduino Uno connection example



void setup() {
  // you can now interact with the LCD, e.g.:
}

void loop() {
  den(13,5000,4000);
}
void den(int chan, int tgm , int tgt){
  pinMode(chan,OUTPUT);
  delay(tgm);
  digitalWrite(chan, HIGH);
  delay(tgt);
  digitalWrite(chan, LOW);
}