I connect my LED to D4 pin and GND.
You need a resistor in seriese with the LED, you might have damaged the output pin by not fitting one. Try using a 220R resistor and another pin.
I connect my LED to D4 pin and GND.
You need a resistor in seriese with the LED, you might have damaged the output pin by not fitting one. Try using a 220R resistor and another pin.