I want to create a led light similar to the CCC ones but I want to use 5 x 5MM led's running off the 12V supply. Do I need 5 x 470ohm resistors or can I use one off the 12v supply ?
i THINK this is right Code: | --LED--| | / | | / | |---470ohm ----LED--| | \ | | \ | | --LED--| +5v -5v
You can either use a single resistor as Ataraxia has diagrammed, or you can get something called a resistor network. I used a 7 commoned 470 ohm resistor network in my BayBus. It's basically a resistor with 7 legs on it so you can attach your power line to one leg, and your LEDs to the other legs. I wired my BayBus up like this: Code: 12v----leg 1 leg 2--LED--| leg 3--LED--| leg 4--LED--| leg 5--LED--| | Ground-------------+ [Edited by Bursar on 20-05-2001 at 05:56 AM]
Sorry to point people away from here to another site, but have a look at the HardForums , Uller has posted an improvement to something I built using an old 1995 Usenet posted Schematic. It's an LED array connected to a Parallel port, that will flashup the CPU load.
Yeah I saw that a couple of days ago I was going to use the led's for backlighting the fans in the front of my case I've got an lcd screen on its way for cpu load Thanks for the link though
Oh, OK, well if you wanted to use the LED for back lighting, and weren't too bothered about HDD activety, then you could build up a small circuitboard, which would basically be a molex, and a five volt LED. If you wanted, you could maybe create a back light led bus, which would have one five volt molex, switches for each of the LEDs you wanted to light, and then run a cable to each LED using speaker connectors like you would with a fanbus/baybus
