hdd led thingy

[2bigfan]

hi
mmmm. i dont know how to ask this but o well.

ok i want to have to hdd leds that work like this. u know how a led turns on then turns off right, well i want to have to leds that switch over every time that the hdd gets info.so every time a normel hdd led would flash off my thingy would switch leds.

if that makes sents can u tell me how to do it. plez.

[crazybillybob]

BigFan,

Your looking for a flip flop Circuit (using an rs or JK flip flop). Simply you have 2 leds and you want them to waggle with HDD activity Like so.

Norm. HDD LED_______New LED1__________New LED2
On__________________________On________________OFF
Off__________________________ON________________OFF
On__________________________OFF_______________ON
Off__________________________OFF_______________ON
On__________________________ON________________OFF
Off__________________________ON________________OFF

Right?

not describe it and I'll help you find what you need. You will have to build a circuit to do this (IE. your not going to find this on the shelf some where).

Good Luck,
Crazybillybob

[2bigfan]

BigFan,

Your looking for a flip flop Circuit (using an rs or JK flip flop). Simply you have 2 leds and you want them to waggle with HDD activity Like so.

Norm. HDD LED_______New LED1__________New LED2
On__________________________On________________OFF
Off__________________________ON________________OFF
On__________________________OFF_______________ON
Off__________________________OFF_______________ON
On__________________________ON________________OFF
Off__________________________ON________________OFF

Right?

not describe it and I'll help you find what you need. You will have to build a circuit to do this (IE. your not going to find this on the shelf some where).

not ?? do u mean describe. well thats it i think, but i Dont whant the new leds to stay on when the normle led turns off.

like this. (copy of urs)

Norm. HDD LED_______New LED1__________New LED2
On__________________________On________________OFF
Off__________________________OFF________________OF F
On__________________________OFF_______________ON
Off__________________________OFF_______________OFF
On__________________________ON________________OFF
Off__________________________OFF________________OF F

and thanks crazybillybob

[crazybillybob]

I think it's doable I'll have to look around and find a simple circuit to do this...(I don't remember it all right at the moment)....I'll see what I can dig up!

[pointedsirforky]

That'd certainly be possible. Same ideas as what crazybillybob was describing with one small addition circuitry-wise.


hdd led -> flip flop
| | |
->AND->AND
| |
LED1 LED2

the hdd activity led feed goes to both the flip flop and two AND gates.
only when the hdd LED is active will the AND gate allow the output from the flipflop to reach the LEDs.

>edit: right, I'll draw up a diagram later and post it seeing as captain forum here wont let me render ascii art very well. >_<

[Aero]

ok quick question, how much voltage is sent to the HDD activity light from the motherboard?

[2bigfan]

thank alot for all ur help

im gessing that its 1.5v. i would have to get my milty meter out to know.

[PP Mguire]

Hmm, Well i want to use some LEDs for my Xbox. What should i do there? I tried using some green power lEDs but when i plugged them in they where just red. Am i missing something?

[crazybillybob]

Hmm, Well i want to use some LEDs for my Xbox. What should i do there? I tried using some green power lEDs but when i plugged them in they where just red. Am i missing something?

Try truning the LEDs around. It sound like you've got Bicolor LEds (with only 2 leads) These are commonly used as power leds (you know the ones that are red when in standby).

Basicly a Bicolor LED is two led elements inversly joined (side by side in the same enclosure) to the same leads. so when the power is + - the Red LEd is on when the power is - + the green LED is on.

Hope this helps,
Crazybillybob

[Aero]

The xbox LED's actually have multiple colors in them I think, I've seen them be Red, Green, and orange.