What do you guys think and old B1 3 module Avalon is worth today in $ and BTC used, taking into account that Avalon has 4 module ones for 15BTC on their store site, and the difficulty is about to hit 310 million. Also the B1's usually only come with a 650W PSU so they can't do more than 72GH/s, what do you think?
Topic: Avalon ASIC users thread - page 65. (Read 438582 times)
If you have issues with hardware error rate add some solder around the buffers. That fixes the HW error rate which is *usually* related to the buffers on the individual hash boards.
There isn't buffers in original Avalon design. May you mean 74LVC2G34 on the signaling bus ? (Config_P/N ReportP/N)But I never see bad solder on this parts.
Those. There's 3 of them (U13, U14, and U15) per hash board. My friend and I've seen hundreds (if not thousands) of them under a solder rework microscope. They all looked good from almost every angle. Touching them up all of them usually fixed a HW error problem (Once we narrowed it down to the right hash board). I'm not going to guarantee that it will fix a HW error problem. I'm just going to state that there's a good probability that it will fix a HW error problem.
Wanna fix my batch1 boards?
My batch2 hovers around 0.5x % while my batch1 starts out at 0.3% but I have caught it 5.x%
avalon wifi works well ?. or is it better to use network with RJ45
to reduce the temperature I have to use wifi for 4 avalons
to reduce the temperature I have to use wifi for 4 avalons
wifi works fine, on some units. It all depends on the flakey TP-LINK TL-WR703N you got
I have units that work fine with wifi, I have others that would not
If you need to spread out the units to reduce temperature, just buy or make a few long ethernet cables, much more reliable than wifi
If you have signal problems in your house the cheapest way to fix that is to buy open-mesh.com devices. They work great!! The other option if you are a good lier is to see if Cisco is still giving away their Meraki wifi access point and sign up for that, you will have to lie to get it. Either way these are two very good solutions and they are 100 times better than your mickey mouse home wireless routers and access points that you buy at the local electronics store.
With a mickey mouse access point in my den I can barely get any bandwidth to my living room, with my meraki in my den I get amazing bandwidth on all my devices in my living room and other places of my house too. At work we have several clients who don't have more than 20 people at any one given time using the WiFi so we have set them up on the open-mesh system which works really well, some levels are below ground in older builds, no issues that we have tested with the open-mesh.
Help needed. Trying to get usb working on this connected to pc however says drivers not installed.
Also ahve cgminer --enable-avalon --lowmem --avalon-options 115200:24:10:35:355 in cgminer however auto closes.
also get this on driver FT232R USB UART unable to install
pdu says 1.5 other says 1.52 does this mean i need to remove the fuse on it also as i am batch 2 any advise to get this working via usb and running on cgmienr on windows 7 would be grateful of thx
Also ahve cgminer --enable-avalon --lowmem --avalon-options 115200:24:10:35:355 in cgminer however auto closes.
also get this on driver FT232R USB UART unable to install
pdu says 1.5 other says 1.52 does this mean i need to remove the fuse on it also as i am batch 2 any advise to get this working via usb and running on cgmienr on windows 7 would be grateful of thx
avalon wifi works well ?. or is it better to use network with RJ45
to reduce the temperature I have to use wifi for 4 avalons
to reduce the temperature I have to use wifi for 4 avalons
wifi works fine, on some units. It all depends on the flakey TP-LINK TL-WR703N you got
I have units that work fine with wifi, I have others that would not
If you need to spread out the units to reduce temperature, just buy or make a few long ethernet cables, much more reliable than wifi
avalon wifi works well ?. or is it better to use network with RJ45
to reduce the temperature I have to use wifi for 4 avalons
to reduce the temperature I have to use wifi for 4 avalons
Sorry how does using WiFi reduce temperature on any avalon when the WiFi and the RJ45 connector are connected to the same board?
avalon wifi works well ?. or is it better to use network with RJ45
to reduce the temperature I have to use wifi for 4 avalons
to reduce the temperature I have to use wifi for 4 avalons
Well after months of mining one of my avalons have stopped. When I power cycle it will run for a little bit and then stop
I receive the following errors
usb_write error on avalon_write
any ideas?
It's either the FPGA board (unlikely ... but you can get one from the bitmine.ch guys, say hi from me)I receive the following errors
usb_write error on avalon_write
any ideas?
or the TP-Link router/cpu board (very likely because they are rubbish) ...
Connect the FPGA board of the broken one via link usb cable to the TP-Link module of the good one, and see if it hashes alright ... if that is the case it is the tp-link gone bad ... if it still stops working after a while it is the fpga board (to 95 % ... the 5 % are one of the hashing modules having problems).
Hope that helps!
one4many
It turned out to be the FTDi chip. Needed to be reworked. Luckily I work with people that had access to do just that. 5 minutes and fixed.
How are you seeing the %? I am running the latest CK firmware and I don't see the % in my HW stats.
https://bitcointalksearch.org/topic/modification-to-show-hw-and-rejected-on-avalon-cgminer-status-page-254331
Thanks, now how do I save the changes in vi again? It's been years since I have touched Linux.
ESC-:-wq-ENTER
are the dashes dashes or spaces?
dont enter the dashes...
ESC : wq ENTER
Wow my device hardware% is quite low, lower on my B1 than my B2.
B1
B2
B1
B2
How are you seeing the %? I am running the latest CK firmware and I don't see the % in my HW stats.
https://bitcointalksearch.org/topic/modification-to-show-hw-and-rejected-on-avalon-cgminer-status-page-254331
Thanks, now how do I save the changes in vi again? It's been years since I have touched Linux.
ESC-:-wq-ENTER
are the dashes dashes or spaces?
How are you seeing the %? I am running the latest CK firmware and I don't see the % in my HW stats.
https://bitcointalksearch.org/topic/modification-to-show-hw-and-rejected-on-avalon-cgminer-status-page-254331
Thanks, now how do I save the changes in vi again? It's been years since I have touched Linux.
ESC-:-wq-ENTER
How are you seeing the %? I am running the latest CK firmware and I don't see the % in my HW stats.
https://bitcointalksearch.org/topic/modification-to-show-hw-and-rejected-on-avalon-cgminer-status-page-254331
Thanks, now how do I save the changes in vi again? It's been years since I have touched Linux.
How are you seeing the %? I am running the latest CK firmware and I don't see the % in my HW stats.
How are you seeing the %? I am running the latest CK firmware and I don't see the % in my HW stats.
https://bitcointalksearch.org/topic/modification-to-show-hw-and-rejected-on-avalon-cgminer-status-page-254331
...however, what are you doing with that figure?
OK, at the risk of this being a trick question, I'm going to humiliate myself by saying "we display the value thus adding readability"?
How are you seeing the %? I am running the latest CK firmware and I don't see the % in my HW stats.
(Actually reading up some of the latest posts about ribbon cables causing HW errors might be the cause on the latest module)
Any advice appreciated, but I'll read back a few pages for some ideas too!
Any advice appreciated, but I'll read back a few pages for some ideas too!
Make sure your ribbon cables are tight to that module and make sure the backplane is snug into the hash boards.
Check the power cable for that module also, inspect the connectors on both ends for any evidence of heating due to poor connections.
If the cables are ok inspect the module for burnt capacitors in the defective miner sections.
If you have a meter you can compare the C1 voltage readings between miner sections.
C1 - 680uf - is also the capacitor that has been failing on some of the units.
A late reply, but better late than never, thanks for the advice it was a loose backplane.. I actually fixed it by turning the unit on the side (I have since seated it properly).
Another question from me :-)
I have added the fourth module into my batch #2 Avalon and upgraded the PSU to a OCZ 1250W.
Since adding the fourth module and running --Avalon-auto I get a fairly high HW error rate at 344 Mhz (>2.5 %) but dropping down to 319/320 gives me 1.5%.
However CGMiner is restarting itself every 6 - 9 hours.
Running firmware version '20130923'
Temp1 - 20
Temp2 - 48
Temp3 - 45
I've moved the PSU out of the case incase it was pushing too much hot air onto some chips but no difference.
Does anywhere know where I can see some logs of why CGMiner is crashing?
Thanks,
nox_
If you have issues with hardware error rate add some solder around the buffers. That fixes the HW error rate which is *usually* related to the buffers on the individual hash boards.
There isn't buffers in original Avalon design. May you mean 74LVC2G34 on the signaling bus ? (Config_P/N ReportP/N)But I never see bad solder on this parts.
Those. There's 3 of them (U13, U14, and U15) per hash board. My friend and I've seen hundreds (if not thousands) of them under a solder rework microscope. They all looked good from almost every angle. Touching them up all of them usually fixed a HW error problem (Once we narrowed it down to the right hash board). I'm not going to guarantee that it will fix a HW error problem. I'm just going to state that there's a good probability that it will fix a HW error problem.
But observe interesting thing, HW percentage are depends from length and quality ribbon cable. Maybe in conjunction with solder quality on buffers ?
Most of our modules were in the .5% hardware error rate with some in the .1 and some in the .9 range @ 375 and 390 . Didn't go higher due to power (375, for us, is ~1150 watts at wall for 4 modules) and cooling (low cfm fans) issues.
It could be a bunch of things. Touching up the buffers consistently solved the problem for us - which is why I dropped the idea here.
If you have issues with hardware error rate add some solder around the buffers. That fixes the HW error rate which is *usually* related to the buffers on the individual hash boards.
There isn't buffers in original Avalon design. May you mean 74LVC2G34 on the signaling bus ? (Config_P/N ReportP/N)But I never see bad solder on this parts.
Those. There's 3 of them (U13, U14, and U15) per hash board. My friend and I've seen hundreds (if not thousands) of them under a solder rework microscope. They all looked good from almost every angle. Touching them up all of them usually fixed a HW error problem (Once we narrowed it down to the right hash board). I'm not going to guarantee that it will fix a HW error problem. I'm just going to state that there's a good probability that it will fix a HW error problem.
But observe interesting thing, HW percentage are depends from length and quality ribbon cable. Maybe in conjunction with solder quality on buffers ?
If you think the HW errors has to do with the ribbon cable, have you tried replacing them with 80pin cables? Remember back in the old days when there was IDE which 40pin, you could get an 80pin cable (Ultra 100/133) that had a 40pin connector, maybe this would reduce the HW errors?
Also how are you determining the % HW at MHz?
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