red hardrive led help

[DARk_ANGEL]

i just bought 2 red leds from radio shack and i wanna put them into my hard drive but donot know what resistor to use any help ill post the specs below

2.6v max

10mcd

28mA

[frenulem - No.5417]

use a multimeter to test the voltage of the Hard Drive

[snowcolt17]

use a led calculator lol

use the 5v source from the hard drive

copied from Free60.org
pinout

Pin #  Signal Name  On XBOX 360  Signal Description 
1  V33  Not connected  3.3V Power 
2  V33  Not connected  3.3V Power 
3  V33  Not connected  3.3V Power, Pre-charge, 2nd mate 
4  Ground  Connected  1st Mate, Pre-charge, 2nd mate 
5  Ground  Connected  2nd Mate 
6  Ground  Connected  3rd Mate 
7  V5  Connected  5V Power 
8  V5  Connected  5V Power 
9  V5  Connected  5V Power 
10  Ground  Connected  2nd Mate 
11  Reserved Not connected  - 
12  Ground  Connected  1st Mate 
13  12V  Not connected  1st Mate, Pre-charge, 2nd mate 
14  12V  Not connected  2nd Mate 
15  12V  Not connected  3rd Mate 

This (probably) explains why normal 3.5" sata drives won't even spin up (missing 12V). So if you want to use a 3.5" drive you need to connect your own 12V.
This table plus more info can be found in the electrical specification here . (Table 17, Page 117)

[DARk_ANGEL]

i know how to connect it im just trying to find out what resistor to use

[Rodent]

try this
http://metku.net/index.html?sect=view&n=1&path=mods/ledcalc/index_eng#parallel

[DARk_ANGEL]

thx rodent i got wat i needed it says use a 100 ohm resister 1/8 w

[FOOKz™]

thx rodent i got wat i needed it says use a 100 ohm resister 1/8 w

i would personally use 100ohm 1/4 watt

wattage will not effect the ohms it is how much power the resistor can handle before it fails. Also 1/4 watts are easier to find.

[DARk_ANGEL]

thx FOOKz will do i will go to a local radio shack to pick up theme and you can use 4 leds as long as they have resisters right?