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I have over 100 T9s running with zero failures so far. They clown on the S9 for reliability. IMO the efficiency trade-off is well worth it since its likely an S9 wont run problem free until you reach ROI and it looks like these T9s will.
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So be so kind to enlighten me with your wisdom and, while doing that, explain why the high failure rate just started with the autotune models.
I will be kind enough to enlighten you. You are talking out your ass with no hard numbers to back up the claims you are making. I have personally managed hundreds of these machines and can say with certainty that the autotune software did not increase failure rates. It just made deployments more annoying because in some cases you have to wait hours for it to settle on a speed and start actually hashing so you can verify full functionality. As far as the testing the autotune function does, it is to find the weakest chip on the chain and not run the system outside of that spec. As these are a string design you cannot target and test individual chips without powering the rest of the chain to pass its data to the controller. It does stability checks to make sure it is running at the optimal voltage for those specific chips on that specific board.. It is not designed to push the absolute maximum out of the board as you seem to erroneously think. |
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remember the smaller the pool the higher the variance and the more inconsistent the payout. For consistent revenue you want to be on a pool with a decent amount of hashrate to minimize this. I would personally never join a pool under 50ph for this reason.
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I never had one case of burned asic on prior Bitmain products (s1, s3, s5, s7)
I can show you pictures of HUNDREDS of burnt up S7 hashing boards i have in house. The early batch s7s had a firmware bug and they would catch on fire for a variety of reasons. I once lost 24 of them because a fan failed on a procurve switch and it shut down. This is NOT a new thing. P.S. it has nothing to do with the autotune firmware. That firmware was created specifically to verify it was not running any chips on a hashing board out of spec. |
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In the case of Bitmain I've received dusty products that have been used for possibly days, which definitely sounds like they use them to mine for profit before selling em first. They could've made the S7s months before they were actually sold and mined with some in that time before selling.
They do a minimum 72 hour burn-in on all the miners. It is not a full on data center where this happens, and can be a bit dusty. I have personally seen the location where it is done. |
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The Avalons are rated at 1150w +15% so around 1322watts total. I would recommend at least at 1600w PSU if you are planning on buying a standard ATX power supply. Personally I would recommend you buy serve grade power supplies as they are more efficient and have more built in safety functions than a retail ATX psu. There are multiple people on this board that sell PSUs and breakout boards for exactly this purpose.
To run the Avalon you will need a Raspberry PI 3 (or equivalent) with an 8gb micro SD card. The miner itself comes with the cable and UART adapter needed to hook it up to the RPi and Canaan provides images for the RPi. The software is pretty self explanatory but if you have trouble there are setup guides to be found in the hardware section of the forum.
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I wouldnt solo mine unless you have multiple petahash at your disposal. 500th is just a drop in the bucket these days.
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I feel like it should be pointed out the R4 suffers from an excessively high failure rate so buyer beware if you decide to go that route.
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There use to be such high demand for manual control ability with autotune S9 models, but now, has someone tried my method with S9?
I've done this successfully to my two R4s.
I have a couple misbehaving S9s that I wouldnt mind trying this on. If I get time later this week to try it I will report back on what I find. I have a couple batches of autotunes I can try this on. |
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Q: And the version of Core that is up-to-date and allows you to not signal in favor of segwit is where?  A: Nowhere, because no such creature exists. Q: And the version of Core that is up-to-date and allows you to signal in favor of a BIP that Core devs are not in favor of is where? A: Nowhere, because no such creature exists. How dare you point out flaws in the almighty CORE OVERLORDS. Shouldnt you just read /r/bitcoin and follow all the sheep there in blindly laying blame on random people rather than objectively looking at the facts? Pretty sure thats how most of the community works these days lol |
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I wonder what could be so different in the design of the S9 and T9 that the T9 so much more inefficient The T9 has less chips and they run at a higher voltage internally to make up the hash rate. That is where you lose efficiency and gain stability. Look at sidehacks S7 undervolt project for parallels. If you have enough mining boards available you can find s7 boards that will hash at .22 but the average board becomes very unstable at those voltage and clock speeds. The best I was able to get out of undervolted s7s on average was about .25 stable over the course of days and weeks. The S9s are similar in that bitmain sets the voltage on the chips as low as possible to hit the efficiency rating they claim but it causes major instability and premature failure of the hashing boards. |
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As the Avalon 4 is a very old miner that probably burns more electricity than you make back in bitcoin I doubt anyone ported the Avalon firmware from the original RPi, I dont think you will find an image that runs on newer RPis :/
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They don't want you to mine at home because doing so would decentralize the system. They want to own every hashing power there is so they can fuck up bitcoin and can start their own shit coin. BTU.
Fuck bitmain.
You should really not spread this level of stupidity by posting it on public forums. Bitmain is the ONLY hardware producer that DOES produce a home miner, the R4. No other company has even attempted a home version of a miner with 14/16nm tech. Go put your tinfoil hat back on and look for conspiracies elsewhere please. |
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There might be corruption on the internal ROM forcing the miner to boot up with all partitions in read only mode. If you SSH into the machine you can manually edit the config file. If it errors when you try and do that you might have bad flash memory on the beagle bone. You can get around this by running the firmware from the SD card slot. If the beagle finds an OS on the SD card it will automatically try and load the SD card before it attempts the internal memory.
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If you are running the 54 chip version you probably dont want to push almost 13v into them since they do lack the voltage regulation of the later batches.
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Are you running the actual Avalon 4 software on an rpi to control it? There should be a gui with all of the settings already in place.
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It is not bitmains fault that people cant understand this is industrial equipment meant for a datacenter and not for home use. I see so much blame going on because people cant run them at home. Stop being so ignorant and just accept these are meant for datacenters not bedrooms.
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Also you should verify that the firmware can see both fans. When there is a faulty fan you will see the machine hash for a few minutes then shut down with a solid red light
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The board is dead. Either send it to bitmain under warranty or bitmain-warranty if its out of warranty for repair.
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