Topic: Which USB hub to use with Block Erupters | NanoFury NF1 | BPMC Red Fury | Ant U1 - page 35. (Read 128592 times)

I don't think it will power more than 10 units 5*5=25 /2.5 = 10 (unless my math is wrong)

Has anyone tried this hub yet?  The comments say it comes with a 5V, 5A power adapter.  If so, it looks like it could be good for ten USB sticks and a fan.  It's also USB 2.0, so it might work with a RPi.  Not very space efficient, though.

https://www.thinkgeek.com/product/e5be/

I've had 6 USB erupter miners running on an $11 Digital Innovations 7 port hub 24/7 for weeks.

http://www.ebay.com/itm/151034583099

EDIT: Only 5 miners are running on the Hub. The sixth is directly in the netbook. Sorry.

The D-Link hub should work fine. Lots of people that use Raspberry Pi as a controller use them. I am running one right now on a R Pi. it also worked fine on my Windows 7 PC. It can support up to 6 BEs. But some like to leave some head room and only run 5.

The photo below shows the D-Link hub in action.

Added TeckNet to the table. It's only about a $1 per port cheaper than Anker.

@markm: Maybe it's not the cooling, but rather the power draw by those fans, which reduced stability of the miners of the remaining ports?

I bought 3 DUB-H7 as they were the cheapest ones available in my country, saving on import taxes. Will report how they work once I actually get the miners to plug into them

Just found this from Tecknet

http://www.amazon.co.uk/TeckNet%C2%AE-Power-Adapter-Cable-Chipset/dp/B00DCO9YVM/ref=sr_1_9?s=computers&ie=UTF8&qid=1375003405&sr=1-9&keywords=anker

From what I can tell its the same as anker but half the price???

both 12v with various voltage/surge protection both with 4amp PSU what do you think before I order a load?

I was getting that on my two 10-port Ankers using a USB fan blowing down from one of the USB ports on each.

I'd have to unplug an eruptor or few and plug them back in ordr move them.

now though that those stupid USB fans died and i instead have a case fan sitting directly on top of the eruptors, they work nicely.

So I think the USB fan just wasn't getting them all cooled as well as a case fan sitting directly on top of them all is doing.

-MarkM-

I have the same behavior from pluging 8 Eruptors on a black Anker 10 ports hub. Maybe software could workaround the situation as:

1. if you wait a couple of minutes, the miner exit that state.
2. Restart cgminer does the trick as well
3. Unplug/plug the faulty miner fix it also.

3.0 will not work with the raspberry Pi

Just wanted to add I picked up one of these and mine will only run 9 erupters at full speed. You can connect 10 but they slow down to around 300mh/s each then. It also does NOT work with a raspberry Pi which is what I bought it for Doesn't seem to recognize it at all.

The D-Link DUB-H7 definitely works with 6 units on the Pi, there's a guy who was running 30+ erupters with the D-Link hubs, he posted it on Reddit with a cool 3D printed enclosure.

Anyways as a reference I also have a D-Link hub and it's running off my Pi without issues.

The 7-port Manhattan USB hub (https://www.adafruit.com/products/961) mentioned in the Adafruit tutorial (http://learn.adafruit.com/piminer-raspberry-pi-bitcoin-miner/) only works with ~4 Block Erupters.

I'm still looking for a good hub for 6+ Block Erupters that works with Raspberry Pi (i.e. not USB 3.0)

Nice review. I especially like the idea for the cooling duct.

Oh, and the internal arrangement of the 10-port hub is three four-port hubs, two ports of the first hub are connected to ports 1 and 2, the remaining two ports are connected to the next two hubs, which connect to port 3 to 6 and 7 to 10 respectively.


Edit: Next, not new, and, as pointed out by someone else running the same hubs, I've examined the internals, the power traces are reasonably wide (about 2mm), but I'll see how things are holding up on the ones I'm using when I add a third one to the duct.

A few weeks ago I ordered four of these 10-port hubs from Deal Extreme, with the intention of running the hubs of the PC PSU.  
http://dx.com/p/high-speed-10-port-usb-2-0-hub-w-2a-power-supply-black-silver-gray-194655

Had a go at running one hub of a PC PSU, and not all the devices were recognized and CGMINER was spamming errors.  I reverted back to running 4 miners in the off a 5V 1.5A supply with success - I suspect extra current was coming down the USB cable, as the USB power is not isolated from the DC Barrel connector input!

Finally decided to get a dedicated 5V supply (2nd hand 5V 20A, open frame, similar to this http://dx.com/p/5v-20a-iron-case-power-supply-silver-ac-110-220v-124499, voltage adjusted to 5.2V), shortened the cable on the pathetic 5.5mmx2.5mm barrel connector cable I was using, powered, connected, and have 9 miners running happily, with the 10-port hub running off a UNITEK Y-2028 hub

I also have some UNITEK Y-2143  hubs, which are also another good hub, at least the ones I was buying locally, supplied with a 5V 2A supply, and will happily run 4 miners.

If you want to run of a PC power supply, I recommend that making use of the 12V line with a 12V to 5V "Buck" converter, as this is what the ATX power supplies expect power to be drawn from.(e.g. http://dx.com/p/15a-dc-4-32v-to-dc-1-2-32v-converter-buck-adjustable-electronic-power-regulator-219807 or http://dx.com/p/149111).   The PSU in a previous post probably died because no 12V current was being used.

For cooling, I have a ghetto solution - I cut a handy 17cm wide by 40cm long box down to 9cm high, cut open the ends, mounted 2 x 8cm PC fans in one end, and placed that over the hub.  This keeps the miners nice and cool.

Ghetto cooling duct at the back, 9 miners in the hub (10th port is on the end), 5V 20A "open frame" sitting dangerously on the right, waiting for someone to put their fingers across the 230V input  


View inside the duct.


Edit - fix sentence parsing error
Edit #2 fixed image links...

122.5/125= 98%; when was the last time anything worked for a long time at 98% utilization? 

this review makes me think 5v is not the best part of your psu

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=236 look at the crossroad cl 1 cl 2 on page 3 then go to the 4th page and see the hot box results


let me link you to a better one

http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=264  

look at the test results for crossload cl1 and cl2 on the 2nd page  go to the hot box results on page 3 . you will see the sea sonic handles it better.  I ran 2 1000 watt sea sonic plats from sept of last year until june of this year.  i ran then 24/7 at about 650 watts for gnu mining. they never missed a beat. still have them .

 my 750 watt seasonic gold which is a clone of your corsair ax 750 watt (IIRC) fried in 7 months. i rma'd it I do think that it is the same as yours. i will try to confirm.

confirmed
they are one and the same.

http://www.silentpcreview.com/forums/viewtopic.php?t=59797   

 pm me if you need more info.   btw nice review on the 49 hub unit.

? 125>122.5 so why it should not work ;p
i ment only that its hard to get something strong on 5V line today and i told you models with 40A on 5V

It's ATX connector (motherboard) I believe it's 5V, the marking on the hub next to the female receptacle displays 5V 28A (should be in pic)