I need an NPN transistor for each LED string.
Yes.
How would the arduino control that many transistors?
If there are not enough outputs then use a mega or some form of port expander. Shift registers are a beginners favorite.
I need an NPN transistor for each LED string.
Yes.
How would the arduino control that many transistors?
If there are not enough outputs then use a mega or some form of port expander. Shift registers are a beginners favorite.