Hi, I can't seem to find an answer to my basic question since most tutorial cover either 1 rgb (for color mixing) or a Matrix of many LEDs. I was just wondering if I could manage controlling 4 or 5 common CATHODE RGB leds simply with an arduino. ie using the 5V from Arduino and appropriate resistor for each color, Could I run all 5xR, 5xG and 5xB together and get the full 5V from 3 PWM pins? OR do I absolutely need a Transistor, relay, etc on a separate circuit with 9 or 12V power source? How would you guys set this up in the most simple manner.
Note: my final goal is to use ardumote or touchOSC to control the color of the Array. Everything could be plugged with a wall wart so no worries on current draining batteries too quickly.