Druid6900
Veteran Member
He also just won the Nobel Peace Prize, so, add that to the list.
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Off-board AT keyboard connector
- Thread starter Druid6900
- Start date
Druid6900
Veteran Member
Ok, the connector T sent arrived today, and it's quite the piece of work. Every line is de-coupled to the keyboard connector housing with a .001uF 3KV ceramic cap.
It was mailed on 10/04 from Michigan and got here 10/17.
Meanwhile, the parcel from SanFran was mailed on 10/10 and got here 10/15.
So, it seems that, the farther something has to go, the faster it gets where it's going.
Perhaps we should forget FTL travel and just MAIL stuff to other planets LOL.
It was mailed on 10/04 from Michigan and got here 10/17.
Meanwhile, the parcel from SanFran was mailed on 10/10 and got here 10/15.
So, it seems that, the farther something has to go, the faster it gets where it's going.
Perhaps we should forget FTL travel and just MAIL stuff to other planets LOL.
MikeS
Veteran Member
So, does it work? Can I stop looking?
Terry Yager
Veteran Member
Druid6900
Veteran Member
Oh yes, I wondered what those little crunchy bits under the shrink-wrap were. LOL
Druid6900
Veteran Member
You MUST be joking. It'll take 2 days to get upstairs and then a day to dig up the board it's for, but, I'll let you know when you can stop looking (if I remember LOL)
Druid6900
Veteran Member
Nope, didn't work.
It flashes the 3 LEDs but that's it. I'm going to clip off the caps and diodes and see if that makes any difference.
Keep looking
It flashes the 3 LEDs but that's it. I'm going to clip off the caps and diodes and see if that makes any difference.
Keep looking
Druid6900
Veteran Member
Still no difference.
Obviously, the power and ground are wired correctly, since the LEDs do their POST flash, but the other 3 lines may not be to the motherboard's liking and, since I can't find anything that tells me, I'll have to experiment.
If I remember my math properly, with 3 wires, there should only be 8 possible combinations. (n(squared)-1)
Since the wires are in one of those "press the little lock tab and pull" type blocks, it shouldn't take long to go through all the possible combinations.
I'll let you know......
Obviously, the power and ground are wired correctly, since the LEDs do their POST flash, but the other 3 lines may not be to the motherboard's liking and, since I can't find anything that tells me, I'll have to experiment.
If I remember my math properly, with 3 wires, there should only be 8 possible combinations. (n(squared)-1)
Since the wires are in one of those "press the little lock tab and pull" type blocks, it shouldn't take long to go through all the possible combinations.
I'll let you know......
MikeS
Veteran Member
I'm out of town at the moment, but if you haven't figured it out by Monday I can look & send you the pinout. If I remember correctly, the center pin of the 5-pin header is NC, if that helps.
chuckcmagee
Veteran Member
Actually it's N factoral so 3 x 2 x 1 = 6, much easier now.
MikeS
Veteran Member
Chuck, you're so baaaad!
Anyway, here's the pinout:
Header J11 from front of board, left to right; DIN5 from rear (wire side),
numbered clockwise (not the standard way):
J11 < - > DIN5
1 (green) 5
2 (yellow) 3
3 NC
4 (black) 4
5 (red) 2
Note: this is an S550 (AT) but probably the same.
Anyway, here's the pinout:
Header J11 from front of board, left to right; DIN5 from rear (wire side),
numbered clockwise (not the standard way):
J11 < - > DIN5
1 (green) 5
2 (yellow) 3
3 NC
4 (black) 4
5 (red) 2
Note: this is an S550 (AT) but probably the same.
Druid6900
Veteran Member
Great, thank you. I'll check the wiring later on today and get back too you with the results.
Druid6900
Veteran Member
Mike, I wanted to check one thing with you, because it makes a big difference.
When you were looking at the back of the DIN-5, were the wires oriented to the top or the bottom of the connector (I'm assuming reading left to right in either case).
I guess a better way to put it was the key in the front of the connector up or down?
Yes, I have the S550 AT motherboard.
MikeS
Veteran Member
And here was me thinking it'd be less confusing if I didn't number them the standard confusing DIN way. No, the key is on top as it usually is on a PC, so seen from the wiring side clockwise is right to left in this case; if the key were on the bottom it'd be left to right.
So, assuming you're looking at the back (wiring) and the key (indent) is on top (North), going clockwise:
Pin 1 - East (NC)
2 - SE
3 - S
4 - SW
5 - W
Howzat?
So, assuming you're looking at the back (wiring) and the key (indent) is on top (North), going clockwise:
Pin 1 - East (NC)
2 - SE
3 - S
4 - SW
5 - W
Howzat?
Druid6900
Veteran Member
Great, now that I know the orientation, it's just a matter of re-arranging the wires on the motherboard end.
From the looks of it, it's no wonder the cable didn't work
I'll keep you posted.
From the looks of it, it's no wonder the cable didn't work
I'll keep you posted.
Druid6900
Veteran Member
Well, Gentlemen, success.
After re-wiring the motherboard end of the connector, it worked perfectly and the board itself tested out fine.
T, thanks for the connector and Mike, thanks for the info. I owe yas.
After re-wiring the motherboard end of the connector, it worked perfectly and the board itself tested out fine.
T, thanks for the connector and Mike, thanks for the info. I owe yas.
MikeS
Veteran Member
No sweat; glad I could help. Good thing Terry sent ya one or you'd still be waiting for me to find one of my spares.
He sent me something too BTW; he sent it abt a week after your cable, but it arrived here the same day as yours; nyah, nyah!
Still haven't made it out to your fine town yet; will give ya a call if/when I finally get over there.
He sent me something too BTW; he sent it abt a week after your cable, but it arrived here the same day as yours; nyah, nyah!
Still haven't made it out to your fine town yet; will give ya a call if/when I finally get over there.