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OG Xbox Forums => Hardware Forums => General Hardware/Technical Chat => Topic started by: eXo on July 16, 2007, 06:27:00 PM

Title: Hdd Activity Led Mod
Post by: eXo on July 16, 2007, 06:27:00 PM

bompity

Title: Hdd Activity Led Mod
Post by: xman954 on July 16, 2007, 07:27:00 PM

QUOTE

but I instead tapped the negative into the pin 39 under the mobo and ran the positive from the power board 12v acc connection

thats why... connect it to 5V

Title: Hdd Activity Led Mod
Post by: KilluminatiStyle on August 13, 2007, 03:37:00 AM

I did the HDD LED and LAN LED about a week ago. I connected the LED straight to the HDD that way it's not a pain in the but to gut the XBOX for future mods/repairs/fun.  

HERE are some pics.

For the front view pic the HDD LED is on the right and LAN is left.

For the HDD Close-up, it is exactly the same as in the TUT... that's the same TUT I used. All works fine for me.

Please forgive the paint job. This XBox was an EBay Salvage



EDIT**

I think your problem is probably with you NEGATIVE line. There are certain lines on the PSU that aren't supposed to be used. EXAMPLE

Title: Hdd Activity Led Mod
Post by: xman954 on August 13, 2007, 10:03:00 AM

QUOTE

Actually the resistor is variable so it can take either Voltage input

wrong
it would be true if pin 39 was just a open collector but it has a protection diode to +5
so it will clamp any voltage above that...

Title: Hdd Activity Led Mod
Post by: KilluminatiStyle on August 13, 2007, 10:23:00 PM

QUOTE(eXo @ Aug 13 2007, 05:27 PM)

That's what I ment to say  

KilluminatiStyle - thanks for that info, I'll double check and possibly move it to share the same negative as the HDD to resolve this as it's not exactly draining the juice out of it.

Aww, I think you meant share the same 5v POSITIVE as the HDD. In the HDD LED mod PIN 39 is the ground and you're supposed to use the +5v from wither the molex connector that plugs into the HDD (red wire) or do as I did and just run it from the bottom of the HDD where the MOLEX CONNECTOR plugs in.

And yes I realize I messed up in my previous post, #5, in regards to calling your line going to the PSU a negative. I meant positive but for some reason my hands fingers didn't want to type that I guess.

Good Luck to ya sir.

Title: Hdd Activity Led Mod
Post by: xman954 on August 14, 2007, 10:09:00 AM

QUOTE

but I instead tapped the negative into the pin 39 under the mobo and ran the positive from the power board 12v acc connection

QUOTE(xman954 @ Jul 16 2007, 10:03 PM)

thats why... connect it to 5V

if pin 39 was just a open collector but it has a protection diode to +5
so it will clamp any voltage above that...

you just don't get it, even with the above hint ^^^

when pin 39 clamps at 5 Vdc and the top of the resistor/led is conected to 12Vdc
then 12-5 = 7 volts across the resistor/led and it will be ON but not as bright
as when pin 39 is pulled to ground
ie: HDD activity and full 12Vdc across the resistor/led

CONNECT it to the +5 as the tut states....

Title: Hdd Activity Led Mod
Post by: eXo on November 05, 2007, 02:09:00 PM

and now while I've got LED fever I did the controllers as well.. 6LEDs per controller. I did one in 3mm LEDs and the other in 5mm LEDs.