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Author Topic: Power Plug rev 1.3 j6 uart and j7  (Read 23881 times)
superpat
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« Reply #15 on: September 05, 2009, 03:02:25 AM »

Hi,

Back to Plug rev 1.3.

I have asked Rabeeh by PM, if he can get the documentation updated, but have not heard back yet.

Has anyone got or know a pointer to current revisions of the drawings?

Looking at the photographs of the new board, it seems to be fitted with 4 springs and screws at the corners. I assume this is to maintain pressure on whatever heatsinks the warm i.c.s.  How is the new rev board cooled?

regards

Patrick
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ianjb
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« Reply #16 on: September 05, 2009, 07:01:18 PM »

Yes, the four spring screws hold an aluminium plate.
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westyd1982
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« Reply #17 on: September 05, 2009, 08:12:23 PM »

My board is slightly different then the photos posted, so I attached a photo.  I have a JTAG connector. 



* plugv1.3.JPG (242.98 KB, 1024x685 - viewed 1265 times.)
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mitek76
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« Reply #18 on: September 17, 2009, 01:17:31 AM »

Is there any information on the box (not the pcb) about the revision?
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superpat
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« Reply #19 on: September 17, 2009, 01:41:38 AM »

Hi Mitek,

On the bottom of my "new rev" plug is a rectangular inset label

A transcription of it states:-   

Sheeva Plug MODEL:003-SP1001
SKU# RD-88F6281-BPLUG-A

Then there is a load of stuff about voltage and current
and then a sticky with mac and serial number

my serial is 0935-000911

Then there are logos Ul CE etc  and globalscale and web site.


I don't know whether an earlier plug will show, perhaps someone can comment

If you need to have a look inside, remove the 4 plastic feet, they are push fit, and unscrew the cross point screws in the holes revealed.  They are TIGHT, binding in the plastic, so use a good well fitting screwdriver, otherwise you could be in trouble if you round out the cross points.  AFAIK there was no security seal or tag on mine. your mileage may very. lift the bottom half and have a look!  only takes a few minutes!   (and mine still works after I put it back together again).

However if you break it, it is not my responsibility it's yours!

I STILL have not had any reply from Globalscale regarding updating the documentation, has anyone?
 
regards

Patrick
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mitek76
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« Reply #20 on: September 18, 2009, 10:31:11 AM »

Thanks Patric.
I also requested for any documentation for rev 1.3 - no answer from Globalscale yet.
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mitek76
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« Reply #21 on: September 28, 2009, 09:33:53 AM »

seams schematics are now available on:
http://plugcomputer.org/index.php/us/resources/downloads?func=select&id=10
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Andy1988
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« Reply #22 on: October 07, 2009, 08:23:41 AM »

According to the new schematics it should be possible to solder these 4 10nF capacitors and an eSATA connector to the board to make it work Smiley
At least for the 1.3 Revisions.

I'll try it, as soon as I've found a source for these damn small capacitors and an eSATA connector with the right footprint for normal people without buying thousands of them Wink
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boerner
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« Reply #23 on: October 07, 2009, 09:32:26 AM »

Somebody is already selling a plug with an eSATA connector:

http://www.ctera.com/home/ctera-cloudplug.html

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Andy1988
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« Reply #24 on: October 08, 2009, 08:01:06 AM »

Somebody is already selling a plug with an eSATA connector:

http://www.ctera.com/home/ctera-cloudplug.html


Yes, for only $199 Wink

I don't think that this connector and 4 caps will cost me $100 Wink
And I don't care about their software. I'll do my own anyway.

But it's another indication that it could work if you solder this stuff to your board at home Smiley
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superpat
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« Reply #25 on: October 09, 2009, 11:57:39 AM »

@andy

Re missing components to get esata working

Hi

Don't forget that you also need to connect the POWER to the esata part of the processor.  If you look on the schematic  powerplug v1.3 sheet 7/11 cpupower you will see a power filter set of components connected to esata cpu pins N6, N8.  (These are not fitted on my system as shipped).  The components are C78, C79, 100nf, C196, C197, 1uF, and a ferrite BIT7, 60 ohm. You will have to add the signal TX and RX Caps as well as you stated.

If you can find an Esata connector please let me know I am still looking!

cheers

Patrick
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Andy1988
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« Reply #26 on: October 09, 2009, 12:24:51 PM »

@andy
Don't forget that you also need to connect the POWER to the esata part of the processor.  If you look on the schematic  powerplug v1.3 sheet 7/11 cpupower you will see a power filter set of components connected to esata cpu pins N6, N8.  (These are not fitted on my system as shipped).  The components are C78, C79, 100nf, C196, C197, 1uF, and a ferrite BIT7, 60 ohm. You will have to add the signal TX and RX Caps as well as you stated.

Oh... I didn't take that into account.
I'm glad you posted this. Otherwise I would be wondering why all this stuff doesn't work Wink

But no, I only found connectors where I need to buy 1000 of them Sad
A friend of mine is working for an electronics company. Perhaps I can get some from him. But this wouldn't be possible for everyone. I hope you understand this.
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birdman
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« Reply #27 on: October 10, 2009, 08:00:11 AM »

But no, I only found connectors where I need to buy 1000 of them Sad
I may be mis-understanding what's required here, but could you extract the cable and connector from an eSata backplane adaptor such as this?
  http://www.shopaddonics.com/mmSHOPADDONICS/Images/aasatab-e.gif
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superpat
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« Reply #28 on: October 10, 2009, 09:56:52 AM »

Hi,

What we are after is a through hole pcb right angle connector similar to the one  on the attached pdf.

This can be purchased from Mouser in one off quantities, but shipping from US to Europe for me is a bummer (again)


(edit spelling!)

* 10067172.pdf (103.59 KB - downloaded 234 times.)
« Last Edit: October 10, 2009, 11:23:28 AM by superpat » Logged

unreal
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« Reply #29 on: October 26, 2009, 12:17:24 AM »

Hi everyone,

So I was quite busy yesterday trying to get the SATA port working, task that has been quite unsuccessful so far...

I took a photo of the PCB to show the various points of interest:


Without soldering anything yet, I took a few voltage mesurements on the various pins:
- (1) : 1.55V
- (2) : -1.75V

Both mesurements are relative to (3), the ground pin.

Of course, at this stage, I'm surprised because I was expecting 3.3V on pin (1), as per the schematic:



So if anyone has an explanation, because I don't understand these readings.

PS: for those looking to purchase a eSATA connector: try eBay, there are loads of very cheap (5-6 euros including postage) USB->eSATA dongles for sale. Should be pretty easy to unsolder the eSATA port...
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