Discussions

Hi,

I got myself a bunch of superbright LEDs from Hobby King, e.g. http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=28507

Trouble is, HK doesn't give any data on the current or voltage drop of those LEDs. I'd like to build a small board that connects to a 4S LiPo, the APM's ARM LED output and then drives 1 red, 1 green and 2 white of those superbright LEDs. Unfortunately, without knowing the LED data I have no clue, how to dimension the resistors - which anyway would need to be BIG (3W...). I wonder if there's maybe some integrated driver circuit somewhere which I could use?

Could someone help me out here? :)

-Stefan