So you have probably fried the Arduino pin. They can only sink 40mA, that is about enough for two LEDs.
You need to use a transistor or FET to switch the large current from the strip. Oh and use another pin you screwed that one.
So you have probably fried the Arduino pin. They can only sink 40mA, that is about enough for two LEDs.
You need to use a transistor or FET to switch the large current from the strip. Oh and use another pin you screwed that one.