Quote Originally Posted by Demon View Post
I have a similar problem. I'm designing panels for my residential alarm system and I'm kinda overwhelmed by the possible maximum current. A LOT of LEDs could potentially be on at the same time (I'm using solid strand 24 AWG telephone wire with 12V 7Ah battery backup).

I started with LCDs, but these panels are not only for the house where it's warm, it's also for the garage (worried about cold and humidity).

Robert

If it's a panel inside then you could supply 1-3mA per LED. There's no reason to supply the maximum amount of current since you won't have an audience to view them and they are inside. I recently used Screenmaster LED's and at 1mA they were really bright. I wish I had your problem. My LED scoreboard is outside and the sunlight hits it. Needless to say the LED's have to be really bright.