Digital Pins are not working

Projects General Guidance
1

I think i short circuited my digital pins while working on a project. When i set pin 13 as an output i see the light on the arduino board flash but when i hook my led to it pin 13 nothing happens. Is there any hope for my arduino Uno.

2

are you using digitalWrite(13, HIGH)? because after you define pin13 as output, it still has a state of LOW or rather 0V. and can you describe what the onboard led next to pin13 does (assuming you have a UNO board or similar). and what does "flash" mean? did you upload blink example? what code does it run? are you sure they got short circuited?

3

...when i hook my led to it pin 13...

Your LED and what size resistor?

4

Also check that the LED is the correct way around.

5

If the led on the board is blinking the output pin is working. Unless... there is a broken connection on the board, which is rather unlikely.

6

I am a newbie and I have exactly same problem. I uploaded the blink program program and the test led on the board works based on the program but my digital output pins are not working. I don't think I have short-circuited the board. Can anyone please provide any help.

Thanks

7

How do you know they are not working? Are they set to OUTPUT with pinMode?

8

How are you connecting the LED? This is probably the issue.

9

Thanks for the reply. Got it working. Wrong resistor was the issue.