Hi people,
Just want to get someone to look at what im planning on doing (once i get hold of hardware) just to make sure im not about to melt anything. Think what im doing is ok, but im a bit new to this and just want to double check
Im planning to wire up 2 TCL5940's to an Arduino Pro Mini like in the diagram on the playground page (http://www.arduino.cc/playground/Learning/TLC5940). however, I need to drive 4 RGB LEDs per channel (eg 1 channel driving the 'R' on 4 LEDS, 1 driving the 'G' etc), so im going to be needing more current than i can get over USB. because this is going to end up mounted inside a computer case, the obvious thing is to use the 5v 'molex' (old IDE power connector) off the computer's supply.
-Can I connect the TCL's VPRG, GND, VCC and DCPRG pins to the molex, and still interface the chip from the arduino? -Im planning on getting the RGB LEDs from here: http://ledstuff.co.nz/product_info.php?cPath=47&products_id=33 (unless anyone can point out someone else who has them cheaper) Are those the right LEDs for this, or should i be getting common annode LEDs? -Im i correct in thinking that i will need a limiting resistor/voltage divider between the chip and the LED? -Is there anything obvious im missing?
Thanks