I screwed up with getting the wrong type of crystals. But my test erupter works fine now I replaced with stock xtal. Now I await a new shipment of xtals.
On the resistor front - damn I wish jaycar stocked them instore
Also I found with the xtal's - either flipping them and using a fine tip iron to add a little solder (or putting a little on the pads) then placing them on the board and using a heat gun to melt the solder works great.
EDIT:
An idea about getting enough power to a stick:
Anyone tried using those dual USB cables commonly found in older external 2.5in HDDs? Obviously your USB hub would be then out half their ports - but maybe a neat way to run it without screwing about with more indepth modding.
And to the person who posted the melted PSU - how random! I just had a dream last night where my pi's case melted like that!
Jaycar? you must be aussie.
im in Melbourne and have spare resistors and a few spare crystals. but RSonline sells packs of 50 resistors for $2 delivered if you can find the right brand. I think they were listed as 4c each min 50 units.
delivery built into the price and they were here in 2 days. cant complain.
as for powering I find im just putting less per hub atm till I can get new power supplies. so instead of 5 I might get 4 etc.
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Topic
BoardGroup buys
Re: [ASICMINER] [Block Erupter USB (0.16BTC) & Blades (3.85BTC)] [Australia/NZ]
by
Scorpia
on 17/09/2013, 01:38:02 UTC
another delivery received.
awsome to deal with.
my only issue was aussie post doesnt want to work weekends
I got the blue color and red color on the right. i handt noticed that the left red and blue were different until just now. i might need to order 2 more
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Topic
BoardGroup buys
Re: [ASICMINER] [Block Erupter USB (0.16BTC) & Blades (3.85BTC)] [Australia/NZ]
I use cgminer 3.4.0. Have removed the USB extension cable, plugged in the USB directly, without cooling. Lets see what happens:) I had the cooler added to the original heatsink, but removed it for now.
That cgminer is still at least 2 versions behind
but with that version you don't use the command line options you were running. but I cant say if they were an issue.
as for cooling. can you use a fan to blow some air across the stick to cool it a little.
and as per above. are you plugged into a hub or direct to a PC or something?
No longer works in raspi + DUB-H7 setup, cgminer sees the device, not able to run it properly, I suspect lack of power (5 other devices are running in the hub, this one plugged into "high current" port) On standalone PC cgminer 3.4.2 sees and runs, not able to get over 350Mh/s with icarus-timing short
Bitminter on Ubuntu reports response time of 6ms and 447.9Mh/s hash rate, average is 447.0Mh/s.
Is it what everybody got or I've done something wrong?
I don't think the options in the newer version of cgminer work anymore, I think someone said 3.1.1 was the last version that they worked in, I did not test it, but all versions of bfgminer I have used works fine with the -S all option
Switched to bfgminer 3.1.4; will post results soon. Miner feels very hot.
im would think that a 1.2K resistor is to small and yu are undervolting the chip for that speed. i would suggest a 1.35K ohm (ish).
also yes make sure you are cooling them with a fan at least.
but at 16Mhz and upto 1.3v i have ran my sticks for days with little errors using a desk fan for cooling. cgminer 3.4.1+ using the --icarus-timing short=90 option
...I think someone said 3.1.1 was the last version that they worked in, I did not test it,...
Just to clarify. Guess it was my guess and I was wrong. --icarus-timing short and --icarus-timing long still working fine with latest cgminer versions. Mea culpa. But back to topic.
yes with the latest versions 3.4.1+ the timing option does work and an extra option has been added. i use --icarus-timing short=90 which gives me 447 on all the 16Mhz units.
it also stops the timing issues is the PC has issues which running short.
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Topic
BoardGroup buys
Re: [ASICMINER] [Block Erupter USB & New model Blades] [Australia/NZ]
by
Scorpia
on 12/09/2013, 04:19:18 UTC
ok. ill start this off.
at this stage im looking at 10 + shipping to 3805. im assuming shipping will be similar to the last ones express.
i have sent an email.
Post
Topic
BoardMining support
Re: Asic miner USB Block Erupter AMU (Icarus) giving too many HW errors
by
Scorpia
on 12/09/2013, 00:52:36 UTC
ok so your not using cgminer are you? if you are then upgrade to the latest and remove those options.
how are you powering the stick? is it in a powered USB hub?
you say you have added a cpu cooler? does that mean you have added a cooler to the back of the standard heatsink or have you replaced the heatsink? maybe take the stick back to stock and just use a fan to blow air over it. see if that helps
edit. i just read you are using a 1.2M cable. remove the cable and try it. the power loss over a bad cable could be the issue.