|
Got a link to that announcement?
Helluva change for them because historically Wells Fargo has been vehemently anti-crypto and closed many peoples accounts because they were involved with crypto.
|
|
|
|
Reseller offered to refund my purchase or have unit returned to china for repairs.
I am sending it back for a refund.
Something I have learned through this is the importance of having more than 1 unit of any particular make/model.
Having the ability to swap parts is critical.
...
In the case of any miner that uses a built-in PSU - as all current ones for the past couple years do - having a spare PSU is usually all that is needed because finding a replacement one even from the maker of the miner is like looking for hens teeth. Best chance is to order a spare when you order the miner. The PSU's do not fail often but if it does, yer screwed. Ja having more than 1 miner to use for testing/spares is nice but largely only useful for the Avalons as their actual hash boards are highly modular. Ants', ones from Inno and MicroBt and others not so much. The hash boards are large 1-piece boards and those manufacturers generally require sending them the entire miner for repairs. Canaan will try to let you troubleshoot it and then send you the parts. |
|
|
|
|
Bumping this as the 1st recent topic dealing with copyright of BTC logo vs that 'other' one which is a poor rehash of what is already here...
|
|
|
|
|
The voltage is fine.
Question is, how many amps can be supplied? Each miner pulls around 3.3kw which if fed 230v means it pulls 14.35 amps.
Then there is the noise and heat produced. All that power is turned into heat and the fans used to remove it from the miner sound on par with a large industrial vacuum cleaner.
You really want that in an apartment with you?
|
|
|
|
The only thing I can add that comes to mind is that Bitcoin is based on using Integer math - not floating point operations. Using integers precludes the use of decimals. Why use integer math you ask? Simple - far faster processing speed and no rounding errors are possible. I refer you to http://nicolas.limare.net/pro/notes/2014/12/12_arit_speed/ as an example with proofs. |
|
|
|
|
It would be best if you move this thread to the Mining Support area rather than opening a new thread about it there. Forum mods strongly discourage multiple threads on the same topic. As creator of this thread you should see a 'move topic' button at the bottom-left of the webpage to do that, then delete the duplicate thread.
HaggsFIN is the only one here in the Forum that has attended Canaan's repair/troubleshooting classes (link to it is below in my sig) so hopefully he can give you better info. While rather surprised he has not yet showed up here, I suggest you contact him.
|
|
|
|
Although a bit harsh, he did not understate the situation. From 8989 coins as of now (listed on Coingecko) 95% of them are only hype coins without utility backing them up
....
Mein Gott in himmel! 8,989 coins  I knew there were a crapton of shit coins but nearly 9k of them is insane... |
|
|
|
|
1st it's Avalon. Not Ovalon.
2nd you say 'power supplies' - as in more than 1. Are you using 2 or more PSU's to power the miner? If you are you MUST make sure that the PSU's are not connected to the same side of the miner.
You can use 1 PSU to power 1 set of plugs on the left side and another PSU to power plugs on the right side. You CANNOT have both PSU's feeding the same side. If you do they will fight each other and very quickly either 1 will be destroyed or worse, you will damage the PMU cards that the power supplies plug into.
Aside from that, you can power just 1 side at a time to check it out.
|
|
|
|
|
Duh.
Well he's right - more than 95% of them are worthless or near worthless crap coins that were created solely to line the pockets of their creators. And yes back in 2015 he would be more positive about it because there was only Bitcoin and a couple other strong coins. Not the over 100 nearly 9,000 mostly useless ones there are today.
edit: corrected my massive underestimation in the number of coins out there.
|
|
|
|
I'm paining to make a custom miner from scratch
(have experience with micro controlers and fpgas)
BTW thank you for your info if anyone reading has atempted to do so, have you succeeded?
Then read the to post that is pinned to this section Mainly point-3. FPGA's are useless for mining BTC. Even today's 100THs ASIC-based miners have a very very small chance of ever finding a block in the lifetime of any single machine. As for folks making ASIC-based miners that use existing chips, just check the Hardware section. There are 2 folks doing it there. |
|
|
|
It is the original document of Satoshi Nakamoto who introduced the blockchain as we know it today, and has been taken up and copied by others without much reasoning. Apparently the OP and friend think that in all the time Bitcoin has existed no one has tried attacking it in every way possible both in theory and actual attempts? It is a very safe bet that probably hundreds if not thousands of bad actors including no doubt more than a few State-sponsored players have tried and to-date, all failed. As I said earlier, it is the constant self-checking of results from the massively distributed mining process that ensures corrupt blocks do not make it very far before the bad fork is terminated. It would take a prolonged 51% attack based on the corrupt block(s) lasting through the full 101 block confirmation rule to have any chance of working. That would very soon be caught by the rest of the network and in one of the rare moments of all the major players acting together - stopped. It has been done a few times before. Just google "billion bitcoin bug" or refer to here for a short description of what happened when someone tried it. That said, I wonder if there any tools to look at the 'fuzz' of failed blocks/chains that branched off the main chain before being terminated? |
|
|
|
|
To me, the only way a bad-actor node could even possibly inject a corrupted block into the chain is:
a) submit a corrupted block it claims has been solved to the network.
b) have a confirmation of the corrupted block because a pool (or one helluva private solo farm) used SPV mining and so did not check that it is a valid block with results that matches the inputs to it.
c) have that first 'confirmation' validated by several other SPV nodes in a row lengthening the now corrupted chain.
With 'c' therein lies the biggest hurdle: By The Book a block is not considered 100% validated until it has 101 confirmations by the network. IF at any time a node that properly validates the block data tags it as invalid it can and most likely WILL be kicked out the the blockchain and treated as the start of an invalid fork. More than enough nodes do that and even the pools like Poolin, ViaBTC, etc that are known for pushing empty (SPV) blocks do do full block validations often enough to catch bad-actors.
|
|
|
|
|
From what has been written here in the Forum it is always a PSU problem. After replacement of the PSU the miners (Avalons, ones from Inno or BtMicro, or Bitmain, etc.) have always worked telling us the controller side is fine.
All modern miners using a built-in PSU are adjusting its high power side output voltage to match what the ASIC chip strings need for reliable operation to eak out the best possible efficiency.
|
|
|
|
|
You need to limit or better yet, drop, discussion of altcoin hardware here as this is the Bitcoin-only area of the forum and the mods will soon step in if you continue posting about altcoin hardware here. There are specific areas of the forum reserved for altcoin stuff, I suggest you use them.
|
|
|
|
Seems odd the PSU would be powering the controller but not the hashboards.
Not really. The high power section supplying power to the ASIC chips is controlled separately with a variable voltage output set by the controller. The control power section that supply fans and CPU puts out just 12vdc at very few amps. This is a very common setup, even the Bitmain machines often have problems with the PSU high-power section while the miners still work enough to report problems via the GUI. |
|
|
|
Good to see that at least the USPTO has ruled in all cases but the most recent and ongoing, The Generic and Specimen Refusals are maintained and continued Translation: They are commonly used and therefore generic terms that cannot be copyrighted nor patented as a Trademark (in the US). |
|
|
|
Ya might want to let us know who the reseller is. Was it Blokforge? They are one of the very few factory-authorized resellers of Canaan gear and I know that along with their website they also have Amazon pages. If it is Blokforge you used they should be very responsive to your problem as they are an excellent company to work with. |
|
|
|
Answered already in post #5...  |
|
|
|
|
Show Posts
