This weekend I worked on the PSU 24 pin ATX connector. I took more time than anticpated but here is the progress.
I made 1 sleeved wire in the previous post. I used this as a template as I sleeved the other wires the other wires:
I find it quite hard work for the fingers to stretch the wires and it requires a lot of the attention but I guess pratice will make it easier. Here is the result after sleeving the first 12 wires:
and after 23 wires (I have not yet made the splitter for the sense wire which will replace one of the 23 wires):
(Sorry for the bad lightning but it hards to take flash images of white wires and the winter weather did not provide good natural lightning today).
Here is the completed cable (still without the sense wires):
I then measured that I did not make a mistake during the wiring:
Remember that pin 1 goes to pin 1, pin 2 to pin 2 and so forth. That is why I measure on the bottom on one connector and the top of the other.
Once checked I plugged the cable into the power supply (the wires have not been 100% sorted and made to run neat yet):
On the other side I am preparing for the wire clamps. I collected 12 wires in one clamp and 11 wires in the other. The plan is to run the 23 wires in 2 bundles. On the motherboard tray there was allready a good location for one of the clamps. I then had to decide how to locate the second clamp. I considered two options. The first option is shown below:
However, I decided to go with the staggered option as depiced by the following image (I think it looks more advanced with one of the screws hidden under the other bundle. Besides I like that the clamps are oriented in the same direction:
I then drilled a 2.5 mm holes and tapped for the 3 mm screw. I put a lot of tape underneath on both sides of the tray in order to collect the alu dust from making the hole.
As you can see above I added two new clamps around the wires (not yet fixed to the tray). Because of the orientation of the motherboatd connector and the PSU connector some of the wires cross each other. You can see this in the image above as well (where the cable enter the motherboard tray)
Therefore, I unplugged the PSU connector:
Only 6 wires where crossing. Unplugging a pin at a time and uncrossing the wire and the plugging it back into the connector I was able to make the wires run neatly in two bundles without crossing each other.
Plugging the PSU connector back in I started trying to visualise how the wires will run:
It is important to get the wires as far right as possible where it enters the motherboard tray. Else there will not be room for the GFX wires (28 in totol) as these will run further down on the back of the MB tray.
and from the inside (i deliberately made the wires come around the back a bit below the MB connector. This makes the wires wrap around the resevoir at a slight angle. I think this looks better than a short straight/perpendicular loop around the res):
The wires have not been completly aligned yet so I need to work a bit on that. Also I need to tap holes for the 4 remaining clamps. But first I need to make the splitter for the sense wire. Now that I have the layout of the other wires I can decide the best location for the split. Guess I will spend the evening working that part out. I will post images of the result.
Wednesday I will hopefully start moving the electronics.
/Nordar
Edited by Nordar - 2/13/11 at 8:19am
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