Common anode RGB LEDs?

Community General Discussions
1

I understand common cathode RGB LEDs: You hook the three anodes to power sources, and then the cathode to the ground.

commoncathode.png

(excuse the horrible MS Paint image and incorrectly wired ground)

But how would one control a common anode LED with a microcontroller? Is it possible?

2

Yes

Instead of providing the current by switching the pin high you sink the current by setting the pin low. The common anode goes to V+. Resistors are still required.