I don't think the arduino onboard regulator can cope with the current required to drive all those LEDs, you will probably need an external 5 volt power supply. See if you can find out what the maximum current is for that board.
I don't think the arduino onboard regulator can cope with the current required to drive all those LEDs, you will probably need an external 5 volt power supply. See if you can find out what the maximum current is for that board.