hey guys, just curious. I am trying to eliminate a lot of soldering for RGB LEDs. by that I mean the 330 ohm resistors used on each color with the 5v output from the digital arduino pins. do I HAVE TO use resistors?
can I simply drop the voltage? use an analog out at say 2 volts? or whatever the led is spec'd to operate on.
or is it a "MUST" use resistors situation when it comes to LEDs?