Which USB hub to use with Block Erupters | NanoFury NF1 | BPMC Red Fury | Ant U1 - page 17.

visdude

legendary

Activity: 1081

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Quote from: colemab on September 08, 2013, 06:24:18 PM

Quote from: aurel57 on September 08, 2013, 06:48:51 AM

I am trying to get away from the high hub cost. Most that buy the Acker hubs cost about $60 each so they have a cost of $120 to run 20 miners ( $6 per port). I have about $8.50 x 3 hubs+ $30 PSU + $15 barrel connectors = $70.50 and am running 25 miners. Using cheap 10 port hubs, 5v 20a PSU I have my cost below $3 per port. This may not seem like a big deal until we all start to run 100 USB miners and a person having to find enough outlets to plug all those wall adaptors into.

If you have big power blocks and need to plug a bunch in, forget those normal power strips and get one of these:

http://www.lowes.com/pd_125292-16503-UTPBS010_0__?productId=1214065&Ntt=workshop+surge+protector&pl=1¤tURL=%3FNtt%3Dworkshop%2Bsurge%2Bprotector&facetInfo=

It's a very expensive solution. I am able to provide power to a dozen of the largest wall warts around or eighteen power bricks for a mere $6.93 from a single wall outlet. I could daisy chain this setup up to a maximum of 1560W AC (13A), still from a single wall outlet. See my prior post above.

visdude

legendary

Activity: 1081

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Quote from: aurel57 on September 08, 2013, 06:48:51 AM

Quote from: noncecents on September 06, 2013, 04:39:30 PM

Quote from: pidge on September 02, 2013, 06:28:04 AM

Ghetto cooling duct here again.

Hard a go are re-flowing the solder on the USB hub that had about half the sockets not working and gave it a +5V power trace augmentation, but I think I may need to replace the sockets. Or wait until I have a reflow workstation (thank your element14 Father's Day specials). Also ran into problems with comms errors, decided I should measure the +5V at one of the miners, it was down to 4.90V at the miner, with 5.16V at the PSU, so I adjusted the PSU voltage up to 5.4V (5.06v at the same miner), and the comms errors stopped. Two more hubs on their way from DX.com for modification (along with some 3300uf 16V caps to repair an ATX PSU with a 45A 5V rail), though I may just get a 5V 30A supply instead, since the voltage can be adjusted up to compensate for ohmic losses.

Why don't you just buy hubs that work?

They cost more money but in the time you're waiting for new hubs and re-soldering them you could be mining.

I am trying to get away from the high hub cost. Most that buy the Acker hubs cost about $60 each so they have a cost of $120 to run 20 miners ( $6 per port). I have about $8.50 x 3 hubs+ $30 PSU + $15 barrel connectors = $70.50 and am running 25 miners. Using cheap 10 port hubs, 5v 20a PSU I have my cost below $3 per port. This may not seem like a big deal until we all start to run 100 USB miners and a person having to find enough outlets to plug all those wall adaptors into.

My setup is composed of 7-port hubs and 4A PSUs (all are already listed on OP and discussed on these pages) for a total cost of $12.20 per set and are very capable of running the maximum number of miners (7) per hub which yields $1.74 per port without having to go through the gymnastics that you did or are still doing. As I've mentioned on a prior post, I've scaled it down to five miners per hub to bring it closer to 50% load (PSU peak efficiency). Even at 5 BEs per hub, the yield would still be at a reasonable $2.44 per port.

I bought a bunch of 5-ft extension cords with three outlets (two on one side and one on the opposite side) and 6-outlet power strips from the 99¢ Only Stores. All of them are rated 13A (1560W) and each costs...you guessed it -- 99¢ each. Every extension that is plugged into an outlet on the power strip can provide power to three power bricks or two wall warts...and so on and so forth. Did I mention that each of them (extension cord and power strip) only cost 99¢ each? Do the math.

visdude

legendary

Activity: 1081

Merit: 1001

Quote from: Trongersoll on September 04, 2013, 08:08:14 PM

I suspect that we are stressing these more than the average user. I'll bet the designers never anticipated these running 24/7 drawing full current.

No doubt. We are indeed maxing them out. We're so hell-bent and focused on getting the lowest possible cost per port that we have forgotten the fact that PSU efficiency peaks at 50% load and deteriorates as it strays north or south (more so towards the south) of this mark which means more heat generated and more wattage drawn off the wall. That's why I have scaled down my setup to five miners for each 7-port hub that are powered by 4A bricks to get closer to 50% load. We don't have to fill all the ports up. Fifty to seventy-five percent load is ideal. Less heat, less wattage and extends the PSU's life.

Edit: I have to admit that maxing them out was fun. It is also important to initially do it to determined if the units are rated as advertised; similar to benchmarking a newly built rig. We don't benchmark our rigs for as long as it's able to, do we?

colemab

newbie

Activity: 54

Merit: 0

Quote from: aurel57 on September 08, 2013, 06:48:51 AM

I am trying to get away from the high hub cost. Most that buy the Acker hubs cost about $60 each so they have a cost of $120 to run 20 miners ( $6 per port). I have about $8.50 x 3 hubs+ $30 PSU + $15 barrel connectors = $70.50 and am running 25 miners. Using cheap 10 port hubs, 5v 20a PSU I have my cost below $3 per port. This may not seem like a big deal until we all start to run 100 USB miners and a person having to find enough outlets to plug all those wall adaptors into.

If you have big power blocks and need to plug a bunch in, forget those normal power strips and get one of these:

http://www.lowes.com/pd_125292-16503-UTPBS010_0__?productId=1214065&Ntt=workshop+surge+protector&pl=1¤tURL=%3FNtt%3Dworkshop%2Bsurge%2Bprotector&facetInfo=

aurel57

legendary

Activity: 1302

Merit: 1001

Quote from: noncecents on September 06, 2013, 04:39:30 PM

Quote from: pidge on September 02, 2013, 06:28:04 AM

Ghetto cooling duct here again.

Hard a go are re-flowing the solder on the USB hub that had about half the sockets not working and gave it a +5V power trace augmentation, but I think I may need to replace the sockets. Or wait until I have a reflow workstation (thank your element14 Father's Day specials). Also ran into problems with comms errors, decided I should measure the +5V at one of the miners, it was down to 4.90V at the miner, with 5.16V at the PSU, so I adjusted the PSU voltage up to 5.4V (5.06v at the same miner), and the comms errors stopped. Two more hubs on their way from DX.com for modification (along with some 3300uf 16V caps to repair an ATX PSU with a 45A 5V rail), though I may just get a 5V 30A supply instead, since the voltage can be adjusted up to compensate for ohmic losses.

Why don't you just buy hubs that work?

They cost more money but in the time you're waiting for new hubs and re-soldering them you could be mining.

I am trying to get away from the high hub cost. Most that buy the Acker hubs cost about $60 each so they have a cost of $120 to run 20 miners ( $6 per port). I have about $8.50 x 3 hubs+ $30 PSU + $15 barrel connectors = $70.50 and am running 25 miners. Using cheap 10 port hubs, 5v 20a PSU I have my cost below $3 per port. This may not seem like a big deal until we all start to run 100 USB miners and a person having to find enough outlets to plug all those wall adaptors into.

Nemo1024

legendary

Activity: 1680

Merit: 1014

Try to plug 3 hubs into the leftmost 3 ports of another D-Link hub and see if these 3 will run 6 BEs each. I have 7 D-Links feeding off anST-Lab/Rosewill.

Trongersoll

hero member

Activity: 490

Merit: 501

Quote from: Nemo1024 on September 07, 2013, 04:41:31 PM

Are they plugged into another hub? D-Links are organised internally as two chained 4-porter hubs. I have 10 of them and they all run 6 BEs each, provided they are fed with a powered USB in addition to AC adapter; otherwise 5.

By the way, mc_lovin sent me a pic of his D-Link setup. Hope it's OK to share with the rest:

They are all plugged into cards in the computer. I think the cards don't give enough extra boost with more than one hub in them.

Nemo1024

legendary

Activity: 1680

Merit: 1014

Are they plugged into another hub? D-Links are organised internally as two chained 4-porter hubs. I have 10 of them and they all run 6 BEs each, provided they are fed with a powered USB in addition to AC adapter; otherwise 5.

By the way, mc_lovin sent me a pic of his D-Link setup. Hope it's OK to share with the rest:

Trongersoll

hero member

Activity: 490

Merit: 501

I got 3 d-link 7 ports today. oddly, i couldn't get them to run more than 4 in each. Undecided

I've got some other ports in transit. I've got 7 erupters without ports still. aaaaahhhhh!

Beastlymac

hero member

Activity: 630

Merit: 501

Miner Setup And Reviews. WASP Rep.

I have been using a d-link hub and it has worked well for me.

colemab

newbie

Activity: 54

Merit: 0

Quote from: mc_lovin on September 05, 2013, 04:42:30 PM

A tried, tested, and true hub solution with the lowest possible cost-per-port.

Current price: 0.39BTC = 45.75 USD

45.75 / 13 = 3.519230769230769

Not quite sure that is the 'lowest possible cost-per-port'. Several in the table at the start of this thread beat this price per port. However, I have to admit that this is a very convenient form factor at a reasonable / competitive price.

peasant

sr. member

Activity: 272

Merit: 250

Cryptopreneur

Considering the crazy diff increases you can't lose mining time.

noncecents

member

Activity: 74

Merit: 10

Quote from: pidge on September 02, 2013, 06:28:04 AM

Ghetto cooling duct here again.

Hard a go are re-flowing the solder on the USB hub that had about half the sockets not working and gave it a +5V power trace augmentation, but I think I may need to replace the sockets. Or wait until I have a reflow workstation (thank your element14 Father's Day specials). Also ran into problems with comms errors, decided I should measure the +5V at one of the miners, it was down to 4.90V at the miner, with 5.16V at the PSU, so I adjusted the PSU voltage up to 5.4V (5.06v at the same miner), and the comms errors stopped. Two more hubs on their way from DX.com for modification (along with some 3300uf 16V caps to repair an ATX PSU with a 45A 5V rail), though I may just get a 5V 30A supply instead, since the voltage can be adjusted up to compensate for ohmic losses.

Why don't you just buy hubs that work?

They cost more money but in the time you're waiting for new hubs and re-soldering them you could be mining.

semaster

sr. member

Activity: 395

Merit: 250

BIGTec 10-port works fine with all 10 port when there is enough power supply
I used internal computer PSU to power up this hubs

Trongersoll

hero member

Activity: 490

Merit: 501

Quote from: Nemo1024 on September 06, 2013, 02:32:09 PM

My D-Links are still running strong after 1 month of 24/7 hashing in an ambient temperature of 26C-29C.

I've got some d-links on order. just waiting for stuff to get here.

Nemo1024

legendary

Activity: 1680

Merit: 1014

My D-Links are still running strong after 1 month of 24/7 hashing in an ambient temperature of 26C-29C.

Trongersoll

hero member

Activity: 490

Merit: 501

man, i can't catch a break with Hubs. today i had an Anker die which takes 9 USBs off line. It has no power. If i push the button on the end (10 port aluminium) the LEDs on the erupters blinks for a second and then nothing. Somebody needs to design a heavy duty hub. Cry

Nemo1024

legendary

Activity: 1680

Merit: 1014

Quote from: mc_lovin on September 05, 2013, 04:42:30 PM

I think there is a hub missing in the list, only the ultimate hub!

Added it to the "Special hubs" table. It's a product from a German company InLine, and seem to be hard to get (Amazon does not tock it any more).

I've also found another 13-porter bay hub, but it's oriented horizontally, so BEs might have spacing issues:

http://www.geek.com/chips/13-port-usb-hub-fits-into-pcs-5-inch-bay-1276181/

dalcebolus

member

Activity: 96

Merit: 10

Quote from: mc_lovin on September 05, 2013, 04:42:30 PM

I think there is a hub missing in the list, only the ultimate hub!

...

mc_lovin

legendary

Activity: 1190

Merit: 1000

www.bitcointrading.com

I think there is a hub missing in the list, only the ultimate hub!

Here is a copy of my post:

Looking to power all your Block Erupters in your PC? We have the solution at WTCR.

http://www.wtcr.ca/catalog/product/usb-hub13-01

A tried, tested, and true hub solution with the lowest possible cost-per-port.

Utilizes your PC's power supply for it's 5v. Powered with a floppy connector but includes a molex to floppy adapter.

Running for weeks stable with all 13 ports populated with Block Erupters, it's safe to say these are the best hubs around.

Got some CM Stackers lying around at home? Fill up all the bays with Block Erupters!

Questions? Simply email [email protected] or inquire through our website.

Resellers? These are an excellent item to include with bundles of USBs as all Block Erupters need a hub!

Topic: Which USB hub to use with Block Erupters | NanoFury NF1 | BPMC Red Fury | Ant U1 - page 17. (Read 128597 times)