I am planning to have 4 pair of common anode RGB LEDs and have each pair in Front-Left(FL), Front-Right(FR), Rear-Left(RL) and Real-Right(RR). Now, I am going to wire them up each pair so in the end to Arduino I will have R,G,B and common anode on each side.
Here is my question, where and which resister I should use? Should I connect both common anode in 5V or 3v3? Should I use resisters in each pin in RGB or common RGB after I connect them all together or common anode?
If you have better suggestion please let me know how to wire such setting up. Thanks a lot!