I'm very new to the arduino. I want to control 6 Led Strips ( Guangtek GT-SN-12W30D-5008 ) I want them to be something like dimmable, si I'm thinking in using the PWN Digital IN in an Ardunio Duelimilanove, but I don't know how to connect them to the arduino since the strips uses a 12V source energy. I have been looking through the forums and I found that I could use a ULN2003 chip. But I'm not so sure on how to make the circuit.
So I made a little schematic for your consideration
I hope you tell me if I'm doing it wrong
Are there any other chips I can use?