high power LED matrix; is it possible and how?
I've been getting into arduino lately and recently discovered the LED matrix. I also saw some high power LEDs controlled by arduino using transistors to handle the power. I wondered if the same idea could be applied to a matrix. It seemed relatively simple, but when I built the circuit in a simulator (everycircuit- an excellent app), I quickly realized some issues with it. The attached picture is the circuit in the simulator. You should get an idea of the flaws of the circuit. I know it would be pretty simple to use relays instead of transistors, but does anyone have any ideas on how to do it with transistors? NPN or PNP or both. I can't figure it out how to do it, but I figured that the collective mind of the brilliant members of instructables could probably manage to come up with something.