Which USB hub to use with Block Erupters | NanoFury NF1 | BPMC Red Fury | Ant U1 - page 26.

MonocleMan

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I wonder if this is what he got?

http://www.cdiweb.com/ProductDetail/HRPG4505-Mean-Well-USA/402881/pid=568?gclid=CLzbnvf38LgCFZKi4Aod8x4AZg

or this:

http://store.bravoelectro.com/powersuppliesinternalpowersuppliesenclosedwithcover-hrpg4505bracdcruggedpowersupply450watt5voltenclosedchassis-p-1808.html

MM

Xian01

legendary

Activity: 1652

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Christian Antkow

Quote from: SamHa1n on August 09, 2013, 10:51:00 AM

pic with new 90 amp power supplies, brought price per port to less than $2
http://i.imgur.com/YQDq0zP.jpg

Very nice setup !

MonocleMan

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Activity: 98

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wow samha1n that is a very pretty sight. Can you tell us where you got the 90 amp psu's from?

MM

SamHa1n

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Activity: 60

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pic with new 90 amp power supplies, brought price per port to less than $2

klondike_bar

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ASIC Wannabe

Quote from: Nemo1024 on August 09, 2013, 07:00:19 AM

Quote from: dwdoc on August 09, 2013, 06:44:49 AM

I know the erupters run hot but what evidence is there that fans are necessary? Has anyone lost an erupter from overheating?

I tested with two Erupters. One runs without any air moving around it, the other lies flat on P4-grade heatsink with copper core and as much contact surface as I could get. The first one hashes at 280~310, the other one at 338, and the uncooled one gets twice as many HW errors. Switching which one gets cooled, switches performance figures as well. So yes, cooling plays some role. However, a bank of closely sitting 18 Erupters (in 3 D-Link hubs, which lie one on top of the other), which get cooled by one Acrctic Breeze fan blowing strait at them, all run at 335 and 1-7 HW errors each (after 10 hours).

I found that without any cooling, they run around 335Mhash and about 1.3-1.8% HW errors. minimal cooling or airflow improves it to about 335.5mhash and 0.9-1.3% HW errors. (i have a usb fan in the mail because i hate how hot these get in proximity to my fingers (laptop))

dwdoc

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- - -Caveat Aleo- - -

Very good to know that. Thanks!

Nemo1024

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Quote from: dwdoc on August 09, 2013, 06:44:49 AM

I know the erupters run hot but what evidence is there that fans are necessary? Has anyone lost an erupter from overheating?

I tested with two Erupters. One runs without any air moving around it, the other lies flat on P4-grade heatsink with copper core and as much contact surface as I could get. The first one hashes at 280~310, the other one at 338, and the uncooled one gets twice as many HW errors. Switching which one gets cooled, switches performance figures as well. So yes, cooling plays some role. However, a bank of closely sitting 18 Erupters (in 3 D-Link hubs, which lie one on top of the other), which get cooled by one Acrctic Breeze fan blowing strait at them, all run at 335 and 1-7 HW errors each (after 10 hours).

dwdoc

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Activity: 966

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- - -Caveat Aleo- - -

Quote from: visdude on August 09, 2013, 03:28:07 AM

Well, I don't need no stinking hubs to hash...while waiting for them to arrive anyway. Time's a-wastin'. MacGyver would be proud.

Aren't they just connected to the ports of his computers?

dwdoc

legendary

Activity: 966

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- - -Caveat Aleo- - -

I know the erupters run hot but what evidence is there that fans are necessary? Has anyone lost an erupter from overheating?

Unacceptable

legendary

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@ visdude,you are more clever than MacGyver Cool

He would have made a really big messy looking contraption,that all looks like some kind of "picasso" art Cheesy

Nemo1024

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@visdude: Awesome Cheesy

Quote from: merv77 on August 09, 2013, 03:03:34 AM

Quote from: strideynet on August 09, 2013, 02:49:42 AM

http://www.amazon.co.uk/ORICO-H7928-U3-Black-Ports-Adapter/dp/B00B7Y3IP2/ref=sr_1_113?s=computers&ie=UTF8&qid=1376034239&sr=1-113
7 Ports USB3 backwards compatible. 20 VA. 7/7

the ports on the USB hub above look too close together, probably only good to get 4 USB erupters going.

Yes, they seem to be a bit too cose. The distance between ports should be a little wider than the width of the USB port: 12+mm

This might be slightly more promising:

http://www.amazon.co.uk/TeckNet%C2%AE-Power-Adapter-Cable-Chipset/dp/B00DCO9XV8/ref=pd_sim_sbs_computers_5

But the spacing uncertainty is the reason why I did not add any of them to the list. Has anyone tied them? Please report. Wink

visdude

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Well, I don't need no stinking hubs to hash...while waiting for them to arrive anyway. Time's a-wastin'. MacGyver would be proud.

merv77

hero member

Activity: 574

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1.21 GIGA WATTS

Quote from: strideynet on August 09, 2013, 02:49:42 AM

http://www.amazon.co.uk/ORICO-H7928-U3-Black-Ports-Adapter/dp/B00B7Y3IP2/ref=sr_1_113?s=computers&ie=UTF8&qid=1376034239&sr=1-113
7 Ports USB3 backwards compatible. 20 VA. 7/7

the ports on the USB hub above look too close together, probably only good to get 4 USB erupters going.

--------------------------------------------------------

I have ordered Power supplies below and awaiting arrival from China.
Being 8A and USB block erupters draw just over 500mA, it should be safe drawing 5A to 6A and thats below 80% load on the power supplies.
I will post back results when I get and have tested them.

5VDC 8A 40W POWER SUPPLY:

http://www.ebay.com/itm/Adapter-110V-240V-AC-5V-DC-8A-40W-Power-Supply-Transformer-AU-EU-US-UK-Optional-/181057301019

http://www.ebay.com/itm/110V-240V-AC-5V-DC-8Amps-40W-Universal-Power-Supply-Power-Adapter-High-Quality-/160861732282

http://www.ebay.com/itm/Universal-Power-Supply-Adapter-110V-240V-AC-8A-40W-for-LED-Strip-Christmas-Light-/160909587091

These are the hubs I have and working on R-Pi

10 PORT HUBS:

http://www.ebay.com/itm/10-Port-USB-2-0-External-HUB-W-Power-Adapter-For-PC-Mac-W-Cable-Silver-New-/370872939627

http://www.ebay.com/itm/Hot-Sale-JHRS-High-Speed-10-Port-USB-2-0-Hub-Multi-Outlet-Power-Strip-Type-/200948954914

strideynet

sr. member

Activity: 412

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http://www.amazon.co.uk/ORICO-H7928-U3-Black-Ports-Adapter/dp/B00B7Y3IP2/ref=sr_1_113?s=computers&ie=UTF8&qid=1376034239&sr=1-113
7 Ports USB3 backwards compatible. 20 VA. 7/7

Unacceptable

legendary

Activity: 2212

Merit: 1001

Well,my old yardsale USB hub died.So,I went to Staples & found a 7 port powered hub with 5 volt,2.6Amp A/C adpater for $42.A little pricey,but so far it works with 3 BE's,gonna try 4 in few minutes.

I'll be back with more info.It seems to work...I was in a pinch Wink

Very similar to this,but a Staples branded one,I can't find it on thier website:

http://www.staples.com/Belkin-F4U041QFCAPL-USB-Hub-7-Ports/product_IM1PL0945

Edit: bad news,only good for 3 BE's.When theres 4 they kinda freak out & random ones don't hash at top speed Roll Eyes

MonocleMan

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Activity: 98

Merit: 10

Quote from: lano1106 on August 08, 2013, 09:39:36 PM

Quote from: MonocleMan on August 08, 2013, 09:28:03 PM

And for the connecter wire I got this:

http://www.mcmelectronics.com/product/23-746&utm_source=ExactTarget&utm_medium=email&utm_campaign=ConfirmEmail

I am going to be excited to try it out too, it sounds like we are trying something very similar.

MM

you should be fine but I suspect that the cable might become a bit hot. The product page specify 3.5A max and you'll probably have ~5A to feed 10 BEs.

Yeah, Pidge suggested shortening the lead, I will most certainly follow his advice.

MM

lano1106

member

Activity: 112

Merit: 10

Quote from: MonocleMan on August 08, 2013, 09:28:03 PM

And for the connecter wire I got this:

http://www.mcmelectronics.com/product/23-746&utm_source=ExactTarget&utm_medium=email&utm_campaign=ConfirmEmail

I am going to be excited to try it out too, it sounds like we are trying something very similar.

MM

you should be fine but I suspect that the cable might become a bit hot. The product page specify 3.5A max and you'll probably have ~5A to feed 10 BEs.

MonocleMan

member

Activity: 98

Merit: 10

Quote from: aurel57 on August 08, 2013, 07:18:07 PM

Here is the link for the PSU I have ordered. (shipped but will not be here for a couple of weeks?) http://www.amazon.com/dp/B0076UJVSY/ref=pe_385040_30332190_pe_175190_21431760_3p_M3T1_ST1_dp_1

and just going to use the cheap 10 port hubs others have used
http://www.ebay.com/itm/140947579838?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_2047wt_1255

here are the 5.5mm Male Jack DC Power Adapter I have
http://www.amazon.com/gp/product/B0058RLD9C/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1

This is very close to what I am doing:

I got this power supply:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290589641496&ssPageName=ADME:L:OC:US:3160

I got this hub (I needed a card reader anyways):

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=231002957081&ssPageName=ADME:L:OC:US:3160

And for the connecter wire I got this:

http://www.mcmelectronics.com/product/23-746&utm_source=ExactTarget&utm_medium=email&utm_campaign=ConfirmEmail

I am going to be excited to try it out too, it sounds like we are trying something very similar.

MM

A_Member

newbie

Activity: 27

Merit: 0

By the way, does anyone know if a 200khz 150mv ripple would be detrimental to a Block Eruptor. I'm looking at a power supply currently that has that.

A_Member

newbie

Activity: 27

Merit: 0

I have 3 Juiced Systems 10 port USB 3.0 hubs each running 9 block eruptors plus a USB fan. I haven't bothered testing them with 10 miners because I am using the 10th port for a fan. They have been mining for about 2 days now with no problem. I actually like their greater density compared to the Anker 10 port. It makes one USB fan cool them much better. Since I don't know how to include an image in my post, I posted an image here:
https://www.dropbox.com/s/wvyefiwnkxcu8br/DSCN0174_LQ.jpg

Quote from: 2jase on July 29, 2013, 01:39:10 AM

As much as I hate to repeat myself I posted a review of the Juiced 10-port hub in another thread( https://bitcointalksearch.org/topic/m.2824064) so I'll paste it here:
-------
I bought the Juiced 10-port from Amazon and suggest getting something else. It'll run 8 erupters but when you plug in a 9th it starts to lose contact with one, then another, then another and the only way to fix that is either restart cgminer or unplug/replug the miner. The Anker's extra amp makes a big difference.

Adding insult to injury my Raspberry Pi can't see this hub at all, so I think I'm going to order the Anker from Amazon and return this one.

Are you sure that it isn't a problem with your USB driver or something like that? What OS are you using? I am running bfgminer on Linux Mint 15 with no problems with 9 Block Eruptors on each hub.

Topic: Which USB hub to use with Block Erupters | NanoFury NF1 | BPMC Red Fury | Ant U1 - page 26. (Read 128592 times)