Hi, I have a RGB LED SMD that has r wiring posts, however the 3 color posts (RGB) are ground (-) and the common is positive (+). if I wire it up to my Arduino by putting power to the common, then ground any of the color pins it lights up fine. This is reverse of what I am used to with a standard LED cap light where the power goes into each color post and then one to ground.
I need to run this SMD with PWM to conrol color mixing, but it doesn't seem that this would work since the color posts are negative. Looking for advice on how to wire this up to control color. I'm a bit of a newbie so I appreciate any help and sorry if this is simple. Thanks so much.