Can you run an LED with analog pins?

Forum 2005-2010 (read only) General Frequently-Asked Questions
17

Have you tested a simple sketch that just flashes leds, something like this:

int pinArray[] = {2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19};  

int count = 0;

void setup(){  
}  
                                             
void loop() {
                                         
  for (count=5;count<17;count++) {                        
  pinMode(pinArray[count], OUTPUT);                        
  digitalWrite(pinArray[count],HIGH);
  delay(500);                                          
  digitalWrite(pinArray[count],LOW);
  delay(500);  
  pinMode(pinArray[count], INPUT);
  delay(500);
 }
}




If that works as expected , it may narrow down the things that could be going wrong

It didn't work. I changed your "for" statement so it goes through all the pins: for (count=0;count<17;count++), and it works fine on all pins from 0 to 13 but it will not work for the analog pins.

Is my arduino (Arduino NG, Atmega8) not working right? I doubt it. Because when I use port registers, it works all fine.

I will really appreciate if someone could try on their own arduino this simple task.