Electronics Led panel

Hi all

i have a lot of question because 1rst i'm a BIG NEWBS in electronic.


SO I have a PC with 4 HDD connect on a PCI IDE UDMA100 Card.

and i would like to make panel who have 8 Led

2 per HDD - 1 for the activity and one for the power ...

(i know it's possible for the activity LED on SCSI drive, but power ? and for IDE ?)

Is this possible ?

How i can make that ?

Please any help will be great

(sorry for my pretty bad enfglish, i'm french)

Thanks in advance.
Ben.

 

Do you have slave devices on the BUS, or is each drive on its own channel?

 

.

2 driver per channel
2 master and 2 slave ..

 

First bad boy for having slave HDDs, SCSI is good u know (and u can get great second hand HDDs from servers that have years of like left!)

ne way,
IDE has an activity line, PIN39 in the connector, that will allow you to get each channel's activity. You might be able to use the channel address bus to tell you which drive is currently active, some simple logic gates could then only let that LED light up, but i can't remeber the addressing standard, its 3 bit. but i wouldn't recomend playing with that if you value your data.

 

hehe

Sorry for SCSI, but i have to for my system ( 2x36go)
and my 4 IDE are 4x250Go; so i can't by (1st or 2nd and) SCSI drive to replace them

So for the SCSI i know, my panel already work for them

Thanks for the IDE tips. Bu as i say up, i'm a newbs on electronic.

So you mean PIN39 of the IDE, ok, i see it, but you talk about bits, it's tooooo much for me

So can you explain a bit more ?

Thanks a lot for the help

 

..

Do you think i can solder a LED directly on the HDD, i mean like the SCSI drive ?

 

depends on the drive, what make/model + download the manual and look for pin headers!

 

Our own Zapwizard has a guide here for IDE drives, taking a signal direct from the drive cables...

 

Thanks a lot for your quick answer

I'll read it as soon as possible and post much question here

 

Ok 'i've read Ok i'll make it

But now i would like also a Power for each IDE driver . Can i connect a led directly to the IDE power connector ? or have you another way to do it


Thanks

 

Hey the problem is that just splits the activity for each channel ?

So u wouldn't be able to tell the differnce from the slaves and the masters

Enless i've not been reading the IDE spec for too long (hey its not my idea of bed time reading!)

 

Now, with this mod you can have Activity for all drive, Slave AND master

Read the mod carfully


Thanks alll !!!

 

After reading hte IDE spec again, i still can't see how it can distinguish which drive is active. it will come on if EITHER drive on that channel is active.

 

sneakier than Cuning McSneak...

Actually, Zap's mod will distinguish between drives, as he's cut the cable between the two drives. That means that one side of the break is only connected to one drive and the other side is only connected to the other (barring connections on the motherboard). Normally, both drives fiddle around with the line, but there's nothing stopping you running a separate line to each drive, so long as each one hooks to pin 39 on the correct drive.

As Zap says,

QED

 

lol cutting the cable twice, i didn't think of that.