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![Noob] Why do I need 1 resistor for each LED ? Can't I use 1 resistor for all the the LEDs ? : r/arduino](http://farm1.static.flickr.com/30/61941877_d74eae045b_o.jpg "Noob] Why do I need 1 resistor for each LED ? Can't I use 1 resistor for all the the LEDs ? : r/arduino")