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Topic: [Announcement] Block Erupter USB - page 14. (Read 251998 times)

newbie
Activity: 41
Merit: 0
June 05, 2013, 02:28:48 AM
here are some more pictures from yesterday (Austrian group buy device distribution.. Smiley)
https://www.dropbox.com/sc/4q1p29fbp9bawu6/T8tkDUvOJ0#/
sr. member
Activity: 299
Merit: 250
June 05, 2013, 01:41:11 AM
What USB hub is being used in that setup?
That's this one here:
http://www.digitus.info/produkte/zubehoer/usb-hubs/usb-20-7-port-hub-da-70222/

It's a 7-port hub, but I've only tested it with 5 eruptors (and 7 Eruptors won't fit as the ports on the side are to near to each other).
I got it here in Vienna in a local computer store for 15 Euros.

(see also: http://geizhals.at/digitus-7-port-usb-2-0-hub-da-70222-a852140.html )

[edit]
Works also on my raspberry pi! (running stable for about 12 hours now)
[/edit]

Good to know, but it's tough for me to get in Australia.
full member
Activity: 196
Merit: 100
June 05, 2013, 01:37:55 AM
My Testsetup: Guruplug Server (modded with active cooling and battery pack) and BE USB Miner with USB-Fan (homebrew):

http://www.abload.de/image.php?img=5rujv.jpg
http://www.abload.de/image.php?img=ucsfo.jpg

(5s):571.4M (avg):332.2Mh/s | A:2476  R:11  HW:42  U:4.0/m  WU:4.1/m
newbie
Activity: 41
Merit: 0
June 05, 2013, 01:34:39 AM
What USB hub is being used in that setup?
That's this one here:
http://www.digitus.info/produkte/zubehoer/usb-hubs/usb-20-7-port-hub-da-70222/

It's a 7-port hub, but I've only tested it with 5 eruptors (and 7 Eruptors won't fit as the ports on the side are to near to each other).
I got it here in Vienna in a local computer store for 15 Euros.

(see also: http://geizhals.at/digitus-7-port-usb-2-0-hub-da-70222-a852140.html )

[edit]
Works also on my raspberry pi! (running stable for about 12 hours now)
[/edit]
sr. member
Activity: 299
Merit: 250
June 05, 2013, 01:30:52 AM
What USB hub is being used in that setup?
full member
Activity: 196
Merit: 100
June 05, 2013, 01:02:07 AM
A:357  R:3  HW:4
Less than 1% with cgminer
My wizard-like math skills says otherwise...  you have slightly more than 1 percent.

*ashamed*
full member
Activity: 184
Merit: 100
June 04, 2013, 08:20:55 PM

Right now I have a 120 mm case fan blowing across my 2 and they are cold to the touch.

Same here, but I just have a 92mm USB fan blowing on mine (plugged into the same hub).  Amazingly cool to the touch.  When I first ran without the fan, it got so hot I could barely touch it.  Makes all the difference in the world.
full member
Activity: 231
Merit: 100
June 04, 2013, 07:43:39 PM
This has the worst Mhash/$ ratio of any asic device out there at 1.22Mh/s per $1. The runner up is asicminer's erupter blade at 1.87Mh/s per $1.

How do they get away with it? Because it's basically the only form of asic being shipped without a pre-order...


I think it's a big novelty factor - these things are selling on Ebay for $400 at the moment.

I bought 3 of these in the first group buy and sold one on Ebay today for $450. so it paid for 2... I am happy hahahah

Naelr
full member
Activity: 231
Merit: 100
June 04, 2013, 07:42:25 PM
I also noticed that the things get so hot the silkscreened logo is tacky (sticky) to the touch. Not complaining - I love the little things.

I wonder if friedcat can tell us if the heatsinks shown in some of the original photos were custom made or can they be ordered somewhere?
The ones with the fins like this:




Hell make your own... I took the metal plate off it just requires some screw holes drilled in the proper place and tapped out with a tap/die set.  It isn't glued or stuck to the board in anyway except for the plastic screws.  Or take an old cpu heat sink and grind it down... I am looking for an adequate one at this very minute.


Right now I have a 120 mm case fan blowing across my 2 and they are cold to the touch.

Naelr
hero member
Activity: 481
Merit: 500
June 04, 2013, 07:23:43 PM
I also noticed that the things get so hot the silkscreened logo is tacky (sticky) to the touch. Not complaining - I love the little things.

I wonder if friedcat can tell us if the heatsinks shown in some of the original photos were custom made or can they be ordered somewhere?
The ones with the fins like this:

legendary
Activity: 2576
Merit: 1186
June 04, 2013, 05:16:34 PM
FWIW, seems my Emerald is dead already.
It's regressed to over 95% hardware errors despite having plenty of constant external cooling for a while now.
Hoping my Sapphire lasts longer...
...the Emerald had a heatsink?
Emeralds don't have heatsinks.

Update: Stuck it in the freezer for 15 mins, it got 1 good nonce immediately after I plugged it in, but doesn't seem to be working any better. Sad

Update 2: Looks like it might be related to the excess power demands of the Emerald... switching to another USB hub works fine for now.
newbie
Activity: 70
Merit: 0
June 04, 2013, 05:05:35 PM
I'm getting about 3% errors.
full member
Activity: 290
Merit: 100
June 04, 2013, 05:03:36 PM
FWIW, seems my Emerald is dead already.
It's regressed to over 95% hardware errors despite having plenty of constant external cooling for a while now.
Hoping my Sapphire lasts longer...


...the Emerald had a heatsink?

you also got a Sapphire? they must be very similar instead mA
legendary
Activity: 2576
Merit: 1186
June 04, 2013, 04:34:05 PM
FWIW, seems my Emerald is dead already.
It's regressed to over 95% hardware errors despite having plenty of constant external cooling for a while now.
Hoping my Sapphire lasts longer...
hero member
Activity: 481
Merit: 500
June 04, 2013, 03:31:42 PM
I get around 1 HW error per 1-2 hours.

What h/w error percentage are you guys getting?  I'm running bfgminer 3.0.2 and I'm getting 0-6%, most of them are around 2-3%, with one stick hovering just under 6%.

A:357  R:3  HW:4

Less than 1% with cgminer


My wizard-like math skills says otherwise...  you have slightly more than 1 percent.


Edit:  I have 1.7% hardware errors after letting them run for a day.
full member
Activity: 196
Merit: 100
June 04, 2013, 03:03:46 PM
I get around 1 HW error per 1-2 hours.

What h/w error percentage are you guys getting?  I'm running bfgminer 3.0.2 and I'm getting 0-6%, most of them are around 2-3%, with one stick hovering just under 6%.

A:357  R:3  HW:4

Less than 1% with cgminer
full member
Activity: 165
Merit: 100
Just mining my own business...
June 04, 2013, 02:52:51 PM
Has anyone tried using a BE for sha altcoins like terracoin or ppcoin?  Just curious how well it performs on other (non-scrypt) blockchains...
hero member
Activity: 742
Merit: 500
June 04, 2013, 02:40:27 PM
I get around 1 HW error per 1-2 hours.

What h/w error percentage are you guys getting?  I'm running bfgminer 3.0.2 and I'm getting 0-6%, most of them are around 2-3%, with one stick hovering just under 6%.

I'm hovering at 1% almost precisely.
legendary
Activity: 2702
Merit: 1468
June 04, 2013, 02:26:37 PM
I get around 1 HW error per 1-2 hours.

What h/w error percentage are you guys getting?  I'm running bfgminer 3.0.2 and I'm getting 0-6%, most of them are around 2-3%, with one stick hovering just under 6%.
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