Transistor Board

Other Hardware LEDs and Multiplexing
1

Hey all,

Just finished making a circuit board...the board has 12 transistors on it to control 4 RGB LEDs via PWM. I was just wondering if anyone knows of a board, similar to:

http://www.ebay.com/itm/like/311203915210?lpid=82&chn=ps

I know that's a relay board and it can't PWM. I'm wondering if anyone knows of a board similar to it that is basically just input pins, transistors and output screw terminals so I don't have to make all these boards by hand. I love the relay boards (I have a 16-channel one), they're so easy to use; I wish I could find something that would make driving these LEDs easier, too.

Just to be clear, I'm powering 3W LEDs, so I can't just sink them with TLC5940s (atleast as far as I know) or something similar.

If anyone has any ideas/suggestions it would be great! If not, guess I'm stuck doing these by hand.

Thanks you for any help!

2

A 3W led is 700mA for a white led ?
Or is that 1W per color in a 5050 package ?

Can you tell which leds you have, and how you power them now, what is the voltage and what kind of resistors to you use.

Higher Watt leds are often powered with a current circuit. To control the brightness, that circuit can have an input.