DIY PCI-e cables for S5, S7, R4 and S7 ASIC

unsoindovo

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Quote from: NotFuzzyWarm on February 21, 2017, 07:19:02 PM

Just another reason that when it comes to large undertaking like 1,000 cables, unless you already have the know how, equipment, and time to do it right, DIY is not ever really an option... Far better to pay for them pre-made by someone who has already done the homework and investment involved.

i think this is the most impontant components!
I tried to diving into all this standard... wire and connectors, but if you have not a massive know how, you risk to loose time, money and if you do the wrong things, you risk to bust your miners...

NotFuzzyWarm

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Quote from: o_solo_miner on February 21, 2017, 06:19:55 AM

If you like to look at this side:
http://de.rs-online.com/web/p/leiterplattensteckverbinder-gehause/2332769/

Sorry it is in german, but you can change it according to your country.

Those particular ones are not PCIe connectors. Same general family yes but not the correct ones.

The site shows the 3mm-pitch (pin spacing) version with a 5A rating and max wire size of 20ga -- too small.

The correct PCIe connectors as shown on https://estore.heilind.com/45559-0002/MOL45559-0002.html are 4.2mm pitch, actually a 9A rating and up to 16ga.... Even the data sheet linked http://www.molex.com/molex/products/datasheet.jsp?part=active/0455590002_CRIMP_HOUSINGS.xml clearly states that is is PCIe (tm) and what they are for.

Just another reason that when it comes to large undertaking like 1,000 cables, unless you already have the know how, equipment, and time to do it right, DIY is not ever really an option... Far better to pay for them pre-made by someone who has already done the homework and investment involved.

sidehack

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Curmudgeonly hardware guy

No, it's pretty much a factory order part. $7 apiece is quite a bit more than I typically spent but then we bought several hundred at a time.

agentcash

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Quote from: sidehack on February 21, 2017, 09:37:31 AM

For a big order like that I can give a pretty good discount. Message me if you want to talk details.

On a related note, you didn't happen to find a source for the Dell Z750P backplane connectors that was cheaper than multiple dollars each did you?

I remember last time I looked they were wanting $7 a piece or somewhere along those lines and didn't have any in stock, with a backorder time of months.

sidehack

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Curmudgeonly hardware guy

For a big order like that I can give a pretty good discount. Message me if you want to talk details.

unsoindovo

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Quote from: o_solo_miner on February 21, 2017, 06:19:55 AM

If you like to look at this side:
http://de.rs-online.com/web/p/leiterplattensteckverbinder-gehause/2332769/

Sorry it is in german, but you can change it according to your country.

thank you for the tip...
but i confirm who is not convenient to home build cables..
For connectors, Heilind is more convenient:
https://estore.heilind.com/45559-0002/MOL45559-0002.html
but maybe, it is mor expensive for shipment...
I think RS have EU dealers too.

it is more convenient to buy cables from good sellers like sidehack or Finksy!

o_solo_miner

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-> morgen, ist heute, schon gestern <-

If you like to look at this side:
http://de.rs-online.com/web/p/leiterplattensteckverbinder-gehause/2332769/

Sorry it is in german, but you can change it according to your country.

unsoindovo

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https://locktrip.com/?refId=40964

Quote from: NotFuzzyWarm on February 20, 2017, 07:05:41 PM

And I still think it would be faster/cheaper to just get the cables from Sidehack....

i think it is my last choise...
DIY is not convenient :-(

NotFuzzyWarm

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Quote

Do you Know if Weico have EU dealers?

No idea but if they do odds are it will cost more because any importer/reseller has to make money and that comes from their markup on reselling wire or other products.

Just ask Weico. On the website they do advertise international shipping but no doubt if shipping to the EU there will be VAT to be paid... That said, the cables certainly are a business expense so I assume your country lets it be a tax write-off no?

And I still think it would be faster/cheaper to just get the cables from Sidehack....

unsoindovo

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Quote from: agentcash on February 19, 2017, 05:40:23 PM

Yeah it gets pretty complex with all the choices available. The part number for PCIe connector I use is 45559-0002, you can see it on the Heilind link

https://estore.heilind.com/45559-0002/MOL45559-0002.html

If you scroll way down that page there are the female pin terminals that go inside of it. They have many options as well, such as gold plating, etc. The cheapest option there looks like part # 39-00-0077 which is tin over copper plated brass.

https://estore.heilind.com/39-00-0077/MOL39-00-0077.html

Edit: After rereading your post, maybe you are asking what part plugs into the PSU itself? That tends to be proprietary by manufacturer of the PSU. Most of the people that I've seen making their own cables use server PSUs and choose their terminals based on what fits the blades or they direct solder.

thank you agentcash!!!
now i'm deeping in weico site to choose wire...
then i ask fore some quote.
Do you Know if Weico have EU dealers?

agentcash

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Yeah it gets pretty complex with all the choices available. The part number for PCIe connector I use is 45559-0002, you can see it on the Heilind link

https://estore.heilind.com/45559-0002/MOL45559-0002.html

If you scroll way down that page there are the female pin terminals that go inside of it. They have many options as well, such as gold plating, etc. The cheapest option there looks like part # 39-00-0077 which is tin over copper plated brass.

https://estore.heilind.com/39-00-0077/MOL39-00-0077.html

Edit: After rereading your post, maybe you are asking what part plugs into the PSU itself? That tends to be proprietary by manufacturer of the PSU. Most of the people that I've seen making their own cables use server PSUs and choose their terminals based on what fits the blades or they direct solder.

unsoindovo

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I'm surrounded by one hour at the Molex site...
Incredible, how many parts what they look identical, have differnt uses...
this seems all the same PCI-e 2 row 6pin female pins
but what is used with PCI-e power cables???
no code are printed in my PSU standard cables...
so, how to understand..
http://www.molex.com/molex/products/listview.jsp?channel=products&fs=category:Crimp%20Housings,productname:%22mini-fit%20jr*%22,application:wire-to-wire,gender:or(female||receptacle),numberofrows:2&sType=z
and i found flammability standard too...
UL 94 -0 ,1 and 2...
googling i found http://web.rtpcompany.com/info/ul/ul94v012.htm
i think UL 94-0 is ok???

unsoindovo

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Quote from: agentcash on February 18, 2017, 05:28:21 PM

I ordered a few spools to see how it compares. Thanks for the help.

Quote from: unsoindovo on February 18, 2017, 11:01:12 AM

can you share some brand/model plz.... i'm completely new in this things...
but if the price is under 1000$ could be a good deal!

This looks very similar to the machine I have. There is another listing on ebay that is about $60 cheaper, but there was only one left.

http://www.ebay.com/itm/110V-Automatic-Computer-Wire-Peeling-Stripping-Cutting-Machine-0-1-8-mm2-/331156485839

be prepared to experiment with it, as the buttons on mine are in chinese and the instructions were useless translations.

It's been so long since I bought a reel of pins I can't remember where I got them.
The PCIe connectors I got from Heilind - https://estore.heilind.com/45559-0002/MOL45559-0002.html
The crimper from Pololu - https://www.pololu.com/product/1928 (I think that's the same crimper, it's been a few years)

Edit: You can find distributors for the parts you need from this page: http://www.molex.com/molex/products/family?key=minifit_plus_connector_system&channel=products&chanName=family&pageTitle=Introduction&parentKey=minifit_products

@NotFuzzyWarm and @agentcash
thank you a lot for the support!!!
i really appreciate it!!!

agentcash

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I ordered a few spools to see how it compares. Thanks for the help.

Quote from: unsoindovo on February 18, 2017, 11:01:12 AM

can you share some brand/model plz.... i'm completely new in this things...
but if the price is under 1000$ could be a good deal!

This looks very similar to the machine I have. There is another listing on ebay that is about $60 cheaper, but there was only one left.

http://www.ebay.com/itm/110V-Automatic-Computer-Wire-Peeling-Stripping-Cutting-Machine-0-1-8-mm2-/331156485839

be prepared to experiment with it, as the buttons on mine are in chinese and the instructions were useless translations.

It's been so long since I bought a reel of pins I can't remember where I got them.
The PCIe connectors I got from Heilind - https://estore.heilind.com/45559-0002/MOL45559-0002.html
The crimper from Pololu - https://www.pololu.com/product/1928 (I think that's the same crimper, it's been a few years)

Edit: You can find distributors for the parts you need from this page: http://www.molex.com/molex/products/family?key=minifit_plus_connector_system&channel=products&chanName=family&pageTitle=Introduction&parentKey=minifit_products

NotFuzzyWarm

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Quote from: sidehack on February 18, 2017, 04:53:07 PM

I stock Belden wire, but that one looks like the same specs.

Probably is. as Weico naturally has cross-references to most of what Belden and the other major mfgrs make. Difference is we don't pay for the distributor markup

They are more than happy to mail you some samples to verify the wire characteristics before placing a large order.

NotFuzzyWarm

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Quote from: agentcash on February 18, 2017, 06:02:20 AM

Quote from: NotFuzzyWarm on February 17, 2017, 07:23:48 PM

@ Sidehack re: wire
My fav source is http://www.weicowire.com/index.php?route=product/category&path=184_50_187
Good pricing and excellent delivery time for most types. Amazing how fast one can go through 5k-ft spools eh?

Any tips on the wire choices? I've been buying 16 AWG PVC coated off amazon, but I notice they have 500ft THHN for ~$22. That's about a third of what I've been paying, but it does have a thinner jacket.

As I posted ^ the thinner insulation usually means the wire is semi-flexible and has thicker strands in it so verify the strand count. For 16ga hookup wire 26/30 (26 strands of 30ga) is good and flexible.

sidehack

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Curmudgeonly hardware guy

I stock Belden wire, but that one looks like the same specs.

NotFuzzyWarm

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Yes.
The only 'difficult' part is sorting through the specs you want as they make many different kinds of and often specialized wire and cable. Generally just standard flame-retardant 300V 80-105deg-C PCV hookup wire is fine for low voltage work in dry, oil-free areas.

Usually the thinner insulation's are found on semi-flexible wire made of fewer but thicker strands of copper. Look for something like Weico's # 3016 http://www.weicowire.com/image/pdf/hookupwire/UL1007%20SPEC.pdf which has 26 strands of 30ga copper in it so is rather flexible.

For the number of cables you want and the amount/cost of the wire used you must pay attention to these details...

unsoindovo

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Quote from: NotFuzzyWarm on February 18, 2017, 12:24:28 PM

Quote from: unsoindovo on February 18, 2017, 11:29:33 AM

Quote from: NotFuzzyWarm on February 18, 2017, 11:13:53 AM

AWG or CM only apply to the wire core(s) diameter and has nothing to do with the insulation. The wire ref'd above all meet UL and CSA flammability standards within their voltage and temperature use ranges

thank you to inform me...
i repeat... i'm not an authority here...
no experience to suggest... with some sellers on alibaba or aliexpress??
can you share some dealer?
just to compare price and quality with http://www.weicowire.com...

Weico is not a reseller - They are a manufacturer of wire just like Belden, Carol Cable, and Alpha who are the major makers of wire/cable for the world. With them you know exactly what you are getting. Only difference is that Weico also does direct sales vs using only distributors.

ok i understand...
Weico can sell to private/final users too!!!

NotFuzzyWarm

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Evil beware: We have waffles!

Quote from: unsoindovo on February 18, 2017, 11:29:33 AM

Quote from: NotFuzzyWarm on February 18, 2017, 11:13:53 AM

AWG or CM only apply to the wire core(s) diameter and has nothing to do with the insulation. The wire ref'd above all meet UL and CSA flammability standards within their voltage and temperature use ranges

thank you to inform me...
i repeat... i'm not an authority here...
no experience to suggest... with some sellers on alibaba or aliexpress??
can you share some dealer?
just to compare price and quality with http://www.weicowire.com...

Weico is not a reseller - They are a manufacturer of wire just like Belden, Carol Cable, and Alpha who are the major makers of wire/cable for the world. With them you know exactly what you are getting. Only difference is that Weico also does direct sales vs using only distributors.

Topic: DIY PCI-e cables for S5, S7, R4 and S7 ASIC (Read 1871 times)