Topic: Which USB hub to use with Block Erupters | NanoFury NF1 | BPMC Red Fury | Ant U1 - page 28. (Read 128592 times)

have you cut the RED wire in the USB cable..?

I'm not sure how your hubs work, but when the hubs are powered through the power supply there's no need for the RED wire in the USB cable.

If it's not cut then you'll get one hub powering the other via the RED wire.
you can test this 'power-backing' theory by plugging one hub without the power supply plugged in, into a hub which has the power supply plugged in and then plug one usb erupter in the hub without the power supply and you'll probably see it power up.  It's safer to cut the RED wire, because if a power supply fails then only erupters in that hub go down.  Otherwise more will go down as more power supplies get overloaded.

If you're not sure about what I'm talking about, reply and I'll try and take a couple pics of what I did to my cables.

When I took the picture I was just excited to see them light up.  They are hashing away great as far as I can see.  They did stop being solid when I ran the BFGMIner and only blip away now.  So far so good.  I'm wondering about daisychaining USB hubs as well.  Or should one hub per port on the computer be the way to go?  I can't locate an answer.

how do you chain them together? do you have 10 ports feeding into a 10 port hub? i've run into wierd problems with some miners randomly not launching when chaining hubs

Power plugs are on the side of the hubs, Facing away from the Camera. Weird place to put it I know.

you've got them plugged in, but are they hashing ok? getting many errors?
in the photo the LEDs are on solid, and that means they're not hashing. correct?
that's how my USB erupter's LEDs operate.

I ordered it via Amazon, I'd rather not bother with that. It's not a loud buzz, I pretty much have to get my ear within inches of it to hear it. I'm more worried about it getting too warm.

I have been using the digital innovations hub with 5 miners since May. No buzzing from the AC adapter.  Can you exchange it?

+1!

My Digital Innovations hubs have five BE's each.


screen shot in windows

Just got my Digital Innovations 7-Port USB Hub in, So far It's been running 5 miners fine with a desktop fan blowing a nice breeze on it for most of the afternoon. My question is, is it normal for the Wallwart to get VERY warm and buzz slightly? Would it be a good idea to unplug a miner? I've got it plugged into my PC's Surge protector with a extension cord if it matters.

Pidge explained his modification of these hubs. They are available cheap on ebay.
The original power source is only 1Amp though so major upgrade needed.
 
https://bitcointalksearch.org/topic/m.2876787

 I take it you are using a custom power solution ? I'm going to hazard a guess you are not driving 9 Erupters on that hub with the stock power adapter ?

what are you soldering exactly? Is this has something to do with customizing the hub PSU?

I have seen PC PSUs in several BE rig pictures and the concept of hub mod is intriguing to me.

I have power issues with a 10 ports Anker hub. With 8 BEs it is unstable. Need to experiment with 7 but with 6, it is rock solid.

However this makes my price per port pretty high.

I would be open to go to the electric shop and get necessary parts to do some PSU mods if this can improve my situation.

So, can you daisy chain hubs? I have five of the Anker 10 port hubs, but only 4 USB ports on the PC, can I just chain the 5th one to one of the others?

Thanks!

I'm running hundreds of them, for weeks now, with cheapest hubs I could find on amazon, at sauna level ambient temps that make bfl devices cower in perpetual throttle down. Per port cost ~$3 per port, including the power source. 5 minutes or less of soldering per hub.

The one sold by my local retailer have a power supply that states 3.5A.  Hopefully that is accurate. 


What size power supply came with it? 

Do we believe that the power supply may not meet its specifications?

Yeah, this only powers 2 miners! I have one and hate it. I hope you did not buy any of these yet.

For those of you interested in getting a Raspberry PI using BTC, I sell them on Bitmit.
https://www.bitmit.net/en/user/bitly

Cheers!

i ordered a white one from the amazon website and it came with the proper 4A power cord... mining 9 on the 3A, and 10 on the 4A, been fine for the last 24 hours.

I wouldn't get my hopes up with that one. They are all over ebay for cheap. I have seen specs on it stating 1Amp total. Also, the specs at your link don't compute. 2.5Amp cannot provide 500mA to 7 ports.

I guess for $6.75 it wouldn't hurt to give it a try though-maybe yours comes with a different AC adapter.

http://www.ebay.com/itm/161054576343

http://www.ebay.com/itm/160691080418

Output: DC 5V 1000mA
Plug standard: US/UK/EU (choose the suitable adapter as you like)
Operation Systems: Windows Vista, Windows XP, ME, 2000, 98, Linux 9 and Mac OS 10.2 or above
Working humidity: 10% - 90%
Working voltage: 5V
Working current: 500mA

Just dropping an update..   running on an XP can be a real challenge since most old rigs running XP are OLD MOBOS that trip all over newfangled USBs

The Orico I just got is very solid but I was getting the same wack-a-mole issue with all my other hubs.  Mainly the com ports SOMETIMES register to a usbee and sometimes not. And it is maddening.. here is my hell:


Added a new USB 3.0 PCI cards with 4 +1 ports.
Any 3.0 hub I plug into it, still shows up as a USB 2.0 in device manager (probably need to update mobo firmware.. ugg)
If I plug all 8 of my USBees into the Orico, it looks great!  But only like 4 or 5 will show up in the com ports and one will show error.
If I plug one by one in, weird stuff happens.  I get one good.. etc..   but when I get one in error, it will go from say 3 good to 2 good and 1 bad even though 4 plugged in!!!! terrible!!!

So after lots and lots of shuffling, I was able to get 4 in the Orico and 4 in the other hub all hasing away with the ModMiner.

yes the ModMiner is the main reason I am still using that rig since it plugs into the powersupply real easy and loves bfgminer which is happy to hash everything once my mobo accepts them.

Not sure what I will do once I get two K16's and four more USBees...   maybe get a RasPI for the USBeees and just have the XP rig for the ModMIner and K16s