Oh, I LIKE this FET: http://www.toshiba.com/taec/components2/Datasheet_Sync//78/11611.pdf Now, IsThere an easy-to-connect TO92 or other 3-pin version?? It's great for heat-sinking to a PCB, though...
OK, I need to look at the schematic more. The current basically flows from +5V through one of these FET 'switches' to a ROW of 4 LEDS. Then the TLC5940 decides how much current will flow in each LED. I Think..
Chris, thanks... what keeps a lot of us going with Arduino is knowing that we're not in a vacuum no matter where on the Earth (Or the Space Station?) we are. Right now I'm in the Middle of the Middle East and people are getting shot North of me. And South, like 40 yesterday. And East in Baharain. And West in Libya. It's pretty damn distracting. And disappointing. Some feelings of friendliness and collaboration and tolerance go a long way right now.