Topic: Which USB hub to use with Block Erupters | NanoFury NF1 | BPMC Red Fury | Ant U1 - page 14. (Read 128592 times)

I've got 3 anker 9+1 3.0 hubs connected to the back of a Mac mini and can't get any more then 10 ASICMiners going with cgminer. Is it the USB hub or is this something to do with OSX? Because everyone seems to always claim the anker USB hubs work.

Freenode is a big place... where you at?

Oh, yet another name! By the looks of it, I already have this guy in the main table under the names of Rosewill and ST-Lab, and didn't realise before now that Vantec is the same thing! Did it have 3A or 4A adapter included? Rosewill/ST-Lab have 4A which is good for 8 ports.

I have now modded 3 D-Links and 1 ST-Lab, connecting them to Molex splitters and power them from an external AT PSU with 18A 5V rail. ST-Lab now runs 10 BEs and D-Links 7 BEs. Make sure that you observe polarity: both D-Link and ST-Lab adapter cables had (+) on the inner pin and its corresponding line was marked with dashes (---- ----) and needed to be connected to the red Molex cable (+5V).

Tested here to confirm that is the case they can handle 5 if several things are connected but 6 if nothing else is connected.....argh impossible to find a 10 port 3Amp 12V charger locally

Could I simply source my own AC adapter that puts out 48 WATTS and swap it onto my existing hub?  are there volt regulators or other component that could be a fire issue if i do this?  are there some watt limits or gage

Thank you for a suggested solution, m-sean. Alas, last time I soldered anything was about 15 years ago, and I don't even have a soldering iron at home (the smell would be frowned upon  )
In the meantime, I am going the preventive route and remove 1 BE from port #4 from each of the remaining functional hubs to avoid fuse burn-out on them as well. I'll add a note to this effect in the table in OP.

Between the failed ports and the ones that I am not using intentionally, I have lost 12 ports, or 1 whole hub worth of ports down the drain. 

@wrenchmonkey: The hub you are pointing out is actually BigTek in disguise.

not too sure if it has posted here before... i have not came across it but someone mentioned to me that i should post this review.

i am currently running android 4.0 / lubuntu installed on sdcard with MK802
http://www.amazon.com/MK802-Android-Google-Player-Allwinner/dp/B008BFXOZE/ref=sr_1_1?ie=UTF8&qid=1379697888&sr=8-1&keywords=mk802

this does not support usb 3.0 but i ended up getting a MondoHub
http://www.amazon.com/Manhattan-Products-161718-Hub/dp/B0074024XU/ref=sr_1_1?ie=UTF8&qid=1379697960&sr=8-1&keywords=manhattan+usb

knowing now... which the device only support 8 usb BE i combined my 13 port usb
http://www.amazon.com/Ports-Speed-USB2-0-Color-Black/dp/B00BQTL0F8/ref=sr_1_6?ie=UTF8&qid=1379698014&sr=8-6&keywords=13+port+usb

the biggest issue i had was i was unable to connect to usb 3.0 devices so what i ended up doing was using a usb 2.0 extension
http://www.newegg.com/Product/Product.aspx?Item=N82E16812200217&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-USB+Cables-_-N82E16812200217&gclid=CMG-po692rkCFbE7MgodtxgAgg

connecting the mondo and SUCCESS!

usb 3.0 hub to usb2.0 device.

Original setup with android connected


new hub TESTING


results


results


-x3

Beware these as well. http://www.ebay.com/itm/140947579838?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649

Won't power more than 2-3 BEs reliably. Lots of data loss, seemingly, as well.

I figured it was worth a shot for $10. 

In regards to the 4 ports failing, I noticed the same issue with 2 of my 13 port hubs. I have found that it's actually a surface mount fuse that is the problem.

As a temporary solution see this image for the mod I did to both of mine to get them to work:

https://dl.dropboxusercontent.com/u/54696378/Keepers/USBPCBMod.jpg

After a continuity test I found that one fuse did not reset, after bridging the connection the ports came back to life.

As you can see by the traces on the PCB that one fuse links up to 4 ports where as the other 3 fuses are linked to 3 ports each.

We are in the process of getting the issue resolved though for the time being this mod has allowed my BEs to run for days without any further issues.

This is a review of my 145 BE strong farm, and a warning review with regard to to the 13-porter bay hubs.

My farm is spread over 2 machines.

One hosts 3 13-porter bay hubs + 9 D-Links + 1 Rosewil/ST-Lab. 3 D-Links are connected to the host via 3-port hub in an old screen. The remaining D-Links and Rosewill are connected to all 7 ports of master D-Link, which is powered by an AT PSU (its wall adapter failed, so modding was required):




The other machine hosts 3 more 13-porter bay hubs, plus a few loose BEs, connected to back ports (I have 10 of those):



Now, you may have noticed that two of the 13-porters in both machines are missing 4 BEs. First yesterday on one machine, and then today on the other machine exactly the same 4 ports (4, 5, 6, 7 from left) failed. The don't supply any power. I took a peek inside and cannot see any physical damage on the PCBs, so it seems like something failed in the controller chip. An interesting observation: the 13-porters have 2 controller chips. The rightmost is connected to the incoming USB line and feed 6 ports. Its 7th contact runs to the leftmost chip, which then feeds the remaining 7 ports.

So, out of 6 13-porters that I have, 2 experienced the same failure and I am now 8 ports short, having temporarily spread out BEs over other machines with free ports. Will either buy an extra Rosewill/ST-Lab or will modify power in on the remaining D-Links to give myself an extra usable port on each.

VCC = +5V wire.

ah.. i see. i had problems detecting 7-8/10 of my block eruptors. Ill try this soon.

I don't know about VCC but I did cut the red VBUS (+5V) wire in the primary USB cable connected to the host.

I have several lightly used 10A 5VDC DIN mount power supplies I would like to get rid if.

The price i'm asking is .15BTC + shipping anywhere in US.

I can also supply a limited # of modified 10 port hubs like those that I use in my own setup. Those I will sell for .10 + shipping, they will handle 5A easily and are tested for such.

I will also sell entire mining setups that include a minimum of 10amp PSU, 1 configured raspberryPI, SD card, 1 fan, 2 modified 10 port USB hubs, and 19 usb eruptors. Make private offer.

I'm on freenode irc if you have questions, I may not see PM on forum for a day or so.

Do you have to modify the usb cable, cutting/removing the VCC and GND wires when using external psu.

Yes. You can also see the specs on the "Red Fury" group buy thread:
https://bitcointalksearch.org/topic/closed-09-or-less-bpmc-blue-fury-27-ghs-usb-miner-ssinc-gb9-296301

On an unrelated note:
Received 2 more hubs and 35 BEs from WTCR guys. All working well.

This will be my last buy of AM sticks, but I may start transitioning to "Red Furies" after October is here and we know the amount of hashing power put in by KnC.

Drat, this last shipment did not go under the customs radar, so they'll want 25% of the value in import tax. The invoice is in BTC, which might make tax authorities scratch their heads... Wonder if I can persuade them that I bought BTC back in January for $15  

As I have stated earlier on this thread, I like to stay within 50%-65% load to be within the peak efficiency envelope; 75% tops if I need to push it.  This, of course, effectively puts me under 80% load by default.  Having said that, I have powered these cheap made-in-China-special 10-port hubs with 4A and 5A bricks and seem to be OK.  The area around the barrel plug does not even get warm.

I also use the generic 6 dollar 10 port hub from China.  There are three things to consider.

a. it is cheaply made.
b. you need to provide your own power supply - the ones that come with them are useless.
c. you need to provide the RIGHT power supply with the RIGHT plug, -OR- as many have done, remove the plug and hard wire them to the power supply.

The NEC requires you do derate a circuit 20% for continuous operation.  Applying the same thought process to the power supply for a mining strip, this suggests you should have a 5v 6.5A supply that you derate to 5v 5.2A to run 10 erupters.  Checking the spec on those plugs suggests they are good for 2-3 amps.  Pushing 5 amps through them is asking for a meltdown.  Pushing 5 amps through a 5.5mm / 2.5mm plug that will universally fit both 5.5/2.5 and 5.5/2.1 jacks is a recipe for disaster as illustrated by the picture a few posts above this one.

These cheap hubs can work.  But you have to work at it.  And, they are better suited for people with 5V, 30A supplies that want to run 50 erupters.

Here is my rig
They are looking great with Arctic fan, stacked.
I am looking to sell them, i have 3 spare or more.

https://bitcointalksearch.org/topic/rosewill-rhub-500-10-ports-029-btc-or-rig-32berwhubsfan-ab-296414

The only bitfury based usb stick miner that I saw power figures on reported pretty much the same draw as an AMU, ~500mA at 5v so 1:1 power consumption give or take 10mA or so

What's the ratio of block eruptors vs. nano furies on a usb hub?  I can't seem to find accurate power rates for the latter (probably because they are not released yet?)

Thanks!

It seems the BIGTec 10-port hubs are the same generic ones from China.  Since it has been used in some successful setups posted on here including customized ones using high-amp full-on PSUs and with all ten ports fully populated, I don't think it's the hub itself that is problematic; it has to be the power brick.  I use the same generic 10-port hubs as my intermediate connection hubs with their own power supply that serves as a supplemental/backup/surplus power for the whole network of hubs.