Well, that wouldn't work. Sorry for little OT, but I'm starting to get confused. Everytime I build something using arduino I order all the parts, wait a month for them, and repeat only because I thought that "in theory" it should work.
When I tested the circuit I used a salvaged PC power supply (with 12V 10W LED instead of those 30V I'm using with drivers). And it just worked! Are there any risks of doing that pernament? I'm speaking of connecting the 12V LEDs straight to the DC12V of the power supply (and switching it with TIP 120...). (I'm having a feeling that I should connect a resistor in series with the led, but what if the voltages are equal?)Thanks M.
My strategy is to buy anything that looks neat and is absurdly cheap, that way if I decide to do something that uses it, I don't have to wait for shipping (now if only I could find my desk...)
What you have not done so far, is explained (with a link) what the LED actually is, so that we can understand what is properly necessary to control it.
Yup. Do you know about digikey? (in the US, at least) They don't have the modules and cheap chinese boards, but they've got oodles of components, and you can ship via usps for like $3, and it's really fast.
It is just one of these There are no datasheets so all I know is that it runs off 9-12VDC and it should draw 400-450mA.