VirosaGITS thanks for you continued interest I wonder however if anyone else has any interest in my ramblings now that the S7 is released? Anyway to continue  I am still working on the assumption that S5 Miners prior to the V1.19 Hash Board cannot be undervolted? This is in no way confirmed but is backed up by several members posting over the Months since release that they have tried and failed. I am assuming that their tests predated V1.91, here are a couple of examples :- My results are 0.44w/GH par 11.1v
Under 11v. Miner starts but dies after a few minutes.
At 10v and lower, it doesn't start hashing., but you have access to the web interface.
Stock efficiency with the same PSU is 0.54w/GH
The test unit also seems to cut out at 9.45V @ 200MHz even if I start at a higher voltage, and 9.75V @ 250MHz.
If anyone else has had any luck starting these at 10V or under I'd be interested in hearing it.
The V1.91 Hash board has two significant changes and I am assuming that one or both of them are responsible for enabling hashing at the lower Core voltage in the BM1384 spec sheet? I will describe these changes in my next post but it is interesting first to speculate what happened at Bitmain? When first released the publicity included this statement. When better power efficiency is needed in the future due to higher network difficulties, you may want to buy some special PSUs 9V DC with more than 10A output, which will allow you to have a 0.2J/GH mining efficiency, but at lower hashing speed.Clearly they expected the unit to operate with a 9V supply, which equates to a Core Voltage of 0.6V. The 0.2J/GH was however slightly ambitious relative to the chip spec which is 0.249J/GH. This statement disappeared at some point with as far as I know no explanation as to why? Simple best guess would be that they found that with the release version the Miner did not hash at much below 11V. You could also speculate that someone in Marketing got a bit carried away with some engineering data and then it dawned on them that anything that prolongs the life of a miner is not good for future sales? The more interesting point to me is what motivated them quite late on in the S5 life to make some changes that enable the unit to be undervolted, particularly as they chose to make no mention of the value of the change? My theory is that Bitmain likes to experiment with ideas in a shipping product that will then be used in a new product. Examples of this are the S3++ which trialled String Supply later then seen in the S5 and the changes to the S5 board layout that then enabled board side mini heatsinks to be fitted, then seen in the S5+. I will explain the changes in my next post and then speculate further. Rich Cheers, no problem, its a good thing to to put interest in and just as people are interested in undervolting S3's at the moment, S5 are coming up next. I'm not particularly in a rush to underclock the S5 because it is still an efficient unit and i think i pay like 1/4 of what you pay for your electricity iirc you said you pay 0.15? But it still has a parallel effect to what i wish to do. Of course the best would be to underclock it without using specials PSU but beside finding a bulk step down that has a high efficiency and current capacity, it ain,t happening. Maybe Jabberwock or Sidehack could make some PCI-E step down, i'm not sure if adjustable volt control could be a thing, but it might resolve our issue completely as for obtaining the required hardware. For the S5 having low voltage support removed, i think Bitmain just cheaped out and rushed out production and sold the S5 for cheap to kill the competition. That would be my market movement speculation. |
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I am in the same boat as you. In Canada and looking to buy some S3 and S5 but sellers are asking ridiculousness prices.
Locally the prices are even worse. There are sellers selling used gear which cost more than new gear.
Its a sellers market right now with mining equipment.
S5 you will probably never get for only 1 BTC, but you might get an S3 for around $100 CAD or so. Those in most areas of Canada don't make much money if the miner is paying for electricity but the S5 is still profitable for most people.
The S5 price has gone down 25% so S3's price probably went down quite a bit as well. I'd pay more than 1 BTC for a S5, it stand to reason they are worth a bit more than 230$ USD at the moment. An S3 for 100CAD shipped/delivered would be of interest to me, but i could also be interested in a "s1 to s3 upgrade kit" kind of by using existing S3 parts without the heatsink, though i'd probably need the fan as well, and if they're in Canada i might as well grab the whole thing. But regardless, i'll buy some hardware, i'll take the best deal and i'm patient. Hopefully someone come to me with a reasonable deal before i get another loud S4 ^_^". What province are you in? You can probably get an S3 for close to $100 Cad. I've seen some sellers locally. The S5 should have gone down 25% however its price remains constant at around $320USD or so, which is what Bitmain was selling at. The S5 is still profitable so its going to be hard to find someone desperate enough to sell one. The one i got from bitmain was 430USD including shipping and import. The price in BTC was 1.65 for the unit + shipping, but that was before the last BTC crash. I am in Québec, next to Ottawa, i put an add on Kijiji but i didn't get a reply. Not for S3/S5's anyways. I would mind picking up a few S3's at that price or a S5 for 400 CAD. |
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Yes he was begging to get a coupon for free. I didnt know users begging/asking stuff for free was liable to be banned/deleted. Here is the reply; So you want a 100$ S7 coupon? What is "Slightly cheaper" for you? I have one i may be willing to part.
Hi, yes that was perfekt. Can you send me the Coupon? Best Regards Willi sorry i thinking it is for free I kinda wish he had made it clear that he was begging, that way a couple of us would have not wasted our time trying to give him a good deal. |
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Let me know if you need any more PSUs to power all these miners you've been picking up lately Trying to pick up.* But i'm not sure i will pickup more server PSU since their fan control is messed up. It look like the fan speed and the noise is load based not temp based so it doesnts matter if its in a 10c room, they will still make tons of noise. So for this i am running that at 50% load, at which point they are pretty quiet. I just don,t want to buy more hardware that make a lot of noise anymore. If i can't get it under 60dB then i'm not buying it. |
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As an EE major I'm sure you are aware of how electricity works. A lot of those old dorms have outlets that are daisy chained together. So if lots of people try to copy you you could start tripping breakers or burn the building down. I would look into the electrical system of your dorm and make sure you're not going to run any risks of fire etc. If your project is successful everyone is going to want to do what you do and the dorm probably doesn't have the power for it.
Reread up on his second post it is not dorm mining it will be in " it will be in basically a glorified closet with a display window that's used for nothing more than showing off the engineering department's projects.". So it's to show off projects of engineering students. I personally would never dorm mine with the sound. (One could make a argument for the avalon 4.1's) I don't think it is something that will catch on and bunch of students in dorm do. Yes OP explained that the project would run in an engineering section, on some sort of display case/closet. The place is cooled and maintained. He is not going to sleep next to a 75dB miner. Of this we made certain. As such we are merely waiting for OP to clarify/consolidate his plan. If he sticks with one pool, depending on the pool it could show a lot of the data. Anything from total BTC earned to hashrate with nice graphs over X days. So showing data I think is easy. It's just just getting the permission to put a miner in it. I could see a little trouble with it as not developed by a student they might not really care about it. So might take something extra to get them to add it to room. OP seem to have already discussed it with a teacher getting the greenlight, he would have to set up temp and not use software report of the miner however. So its not about permission its more about making it fit in the engineering curriculum. Other than that he is probably fine. |
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As an EE major I'm sure you are aware of how electricity works. A lot of those old dorms have outlets that are daisy chained together. So if lots of people try to copy you you could start tripping breakers or burn the building down. I would look into the electrical system of your dorm and make sure you're not going to run any risks of fire etc. If your project is successful everyone is going to want to do what you do and the dorm probably doesn't have the power for it.
Reread up on his second post it is not dorm mining it will be in " it will be in basically a glorified closet with a display window that's used for nothing more than showing off the engineering department's projects.". So it's to show off projects of engineering students. I personally would never dorm mine with the sound. (One could make a argument for the avalon 4.1's) I don't think it is something that will catch on and bunch of students in dorm do. Yes OP explained that the project would run in an engineering section, on some sort of display case/closet. The place is cooled and maintained. He is not going to sleep next to a 75dB miner. Of this we made certain. As such we are merely waiting for OP to clarify/consolidate his plan. |
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I really hope the "(+2.90%) for now" is close to get back to the 2 percent norm would be nice. I'm still not sure though I think there are still a lot of S7's to be made. Hashnest specifically I think would be a batch itself.
There is also the issue/fact that S7 Batch 1 will start onlining during this period. I hope the difficulty back down a bit, but i'm not sure of the effect on difficulty all the elements like miners dropping off because of diff increase, miners coming on because of outdoor temperature finally dropping and new miners being put online will have. I'm not sure how many S7 will come online and i don't really feel like digging through Bitmain's TXIDs to figure it out, but i'm betting we'll be fairly close to 5% this period once again. |
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One word : Risk
Well its a lot of work. Basically monitoring and maintenance is kind of a 24/7 job. I only have a few miners and thats how it is to me. Of course i just minimize the risk change and if something happen during the night i just eat the loss, but if it was a bigger mining operation i'd need staff and such. Personally i prefer just keeping it private. |
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Hmm yeah i wouldnt blame the BTC drop on XT. Sure the scaredy kitties might of dumped because of unfounded fears but i don't think the big BTC owners are that weak. XT didn't gain momentum, only FUD.
If such little FUD made the price drop so much, then we were over BTC's true value for sure. There is no need to worry about BTC price dropping over FUD and it was far from a civil war. It was just a loud mouthed minority causing a lot of waves and spam.
its not so much XT per say its this whole block size issue poeple find out bitcoin is not the limitless "money of the future" they thought it was - sell then they find out no one is sure what to do about scalability - sell then they find out gavin has left the dev team, to work on XT the solution to our problems - good news? maybe buy a little then XT is a major flop, which seems to be the act of gavin coding with e NSA pointing a gun to his head - sell sell sell 2 of the best devs basically quit - sell? then 100million ideas all kind of similar pop up, fears of bitcoin splitting in two set in - sell bitcoin splits into BIP100 Vs BIP106 silly silly - sell everythingBut there is absolutely no reason for this to happen, only people that don't know how Bitcoin work can be worried about that. You need consensus to change and consensus is not going to happen without the Bitcoin expert agreeing with the change. This pretty much mean. If it is not; 1-Absolutely and immediately necessary.2-Absolutely the right thing do to. Then There will be no fork. None, at all, zilch. People need to stop listening to FUD and drama. But obviously the people that own the hash power aren't, because how many blocks did XT solve? Enough said?  Not being proactive and not allowing growth predictability is the greatest way to kill investment in the space. sell sell sell That's a sad reality then, because only when people start "losing money" that they will band together and be motivated to make a change to resume "making money". Proactive is not something that can be applied to any form of "big" society or group. I think realizing the Potential of BTC require a different mindset than the standard "trader option" mind, because lets face it, the only common ground between stock and BTC is the perspective both come from a human's mind. The inner working of BTC is not comparable. |
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gotcha, everybody tought you have some troubles with your Antminer S5...  So its a Samsung... maybe this thread is the better one. good luck Haha damn. ^_^" Indeed. I would advise against running a wallet on a platform so insecure like phones. I strongly recommend getting a SPV wallet and run it on Linux or even Windows if you can secure it properly. If its just a little amount of money, probably use a webwallet with their app, so local security is less important since you will need 2FA or another form of authentication to release the fund. Maybe something like GreenAddress would do. |
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see with the rising electricity prices i dont think investing in asic miner is worth now.....rising electricty prices is covering up the block reward now.. so its hard now.....however if block reward is increased then it may work...
Could you explain what you mean by "rising electricity prices"? Prices here are not rising at all and at a good electricity rate, the current difficulty with current gen hardware is not much of an impact on income. Thus beside the overpriced unit that is the S7, there is no problem at all with home mining unless you can't have your hardware placed somewhere with a good price for your electricity consumption. |
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Again, I wished we haven't told people about confirmations in the first place.
Trying a double spend for a coffee, is like forging one dollar bills. Who would do that?
Furthermore, paying with a credit card takes days to confirm, but nobody thinks about that, when he uses a credit card, but in the Bitcoin World we have the problem, that it is nerds who tell the normal people about how Bitcoin works, and nerds tend to confuse people with just to much details and people get the whole thing wrong.
You see, that even OP, who is a Legendary Member, got it all wrong.
There are other reasons that you need a confirmation, for example the stress test or an attack going on could put your payment in hold for days if you did not pay enough fee, but you never know it in advance A better solution is to use web wallets and LN payment channel, that could do the payment in real time without any fee (The merchant pay the fee once for thousands of transactions at daily settlement, so that each transaction's fee is neglectable) But by the time people start to use web wallets at large scale, those fiat mobile payment solutions have already took majority of the market share, bitcoin is too late in the game Why do so many people think this? This is a non-issue. The seller just need to check that a proper fee was input and then everything work as normal. It can even be done automatically. I mean blockchain.info not only tell everyone in the world what the fee paid was but also the estimate of when it will be confirmed based on how much fee was paid and if the current fee is bellow recommended level. If there is no warning displayed, then spam attack or not, the transaction will confirm promptly. The QR scanned just need to tell the buyer what fee to pay and bam done. And honestly its not a big issue to raise the the fee by 0.001/kB for an "important transaction". Just the many dollars you would save (on the seller's perspective) from not using a payment processor such as MasterCard will gladly make him eat the fee from confirming the transaction. All he has to do is set the right price and cover the (minimal) transaction fee. |
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However for 100-300THs in someone's garage, ....
That's a ton of TH for a garage. I bet it's toasty in there! Sure but then again, its your garage, so nothing prevents you from having the exhaust from the miners go straits outside, getting rid of absolutely all the heat, though not the noise ^_^". If you keep it close, you would only need a couples of units to make it "toasty" thus unless its a cold winter, you better figure out a way to dump the heat regardless of how big your setup is. Meanwhile 20 S7's is not that much. I just hope the construction is thick enough to block the sound from entering the rest of the house! |
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till now, i am earned 0.01 - 0.04 btc every week from faucet..
not big, but not bad. because i am manually typing captcha.
That sound like slave labor to me, how much hours do you input in that? If its more than 1 hour per week then i think you're getting ripped off as hell. Why not participate into micro jobs or campaign signature for 10x the payout and you'd be actually learning and contributing instead of... well doing slave/bot labor? |
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As aforementioned, the OP user does not wish to bid or purchase a *very cheap* ticket, he wanted one for free and then never replied to further PMs. There is also the issue of dealing with a random new user claiming to be someone more trustworthy on the website. *Forgot password* Right? Of course there is the possibility of offering escrow, but this is a moot point as the OP here only wishes to receive a coupon for free. So unless you are here to give OP a free coupon, we can let the thread die. |
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Why not do cloud mining where you do not have to worry about equipment
Because most cloud mining "contracts" have been nothing but unprofitable ripoffs with zero percent chance at ROI much less a profit for the buyer, and the rest are mostly unprofitable at best? Oh yeah, LOGIC, most "promoters" hate logic.... Indeed, beside the fact that most people would advise against joining shifty random unknown company's cloud mining services, even the best one, though will not rip you off per see, will merely bring you to a break even point before giving you very little actual ROI on your investment after a long time. And in the mining industry, if you haven't broke evened after 6 months, you're at high risk of losses or barely breaking even without having received any profit. And then there's the BTC volatility issue that means the BTC profit you might get back can be worth more than it was at your investment point... or less. I dare say, if your electricity cost is too expensive at home, then simply buy hardware and get it hosted someone it is cheap, because for certain cloud hosting services are there to make money off you, not make money for you. |
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Like what? What beat Mining's 200% per Annum? Are you saying you can ROI faster with trading, safely, with minimal time investment, whatever you put in Trading every 4 months? %200 per annum? You can't ROI faster than 220-240 days with any of the mining equipments in market. Even if your electricity is free it's not less than 200 days. Now imagine what happens 200 days later? When you need to start to profit from mining, you can't, because new hardwares have been already come and difficulty will be a lot more than today's. Says who? What are you buying? Overpriced units from Ebay? I ROI all the stuff i buy in 60-120 days. If it take longer, getting good profit is probably out of the question. As such, i get 150-250% per annum. Because the miner doesn't go out in smoke, it is still worth something after your 100% profit. At that point you can sell the miner which is purely more profit. Personally i can't support any more of such deals but what do happen if you get an Antminer S1 for 10$ each? Suddenly 2 months ROI happen. 15$? 3 Months~. 20$? 4 Months~ |
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There may soon be an avatar campaign. Any specific things you'd like to see?
i would like to see competitive rates , right now there are some competition in the signature market payment rates If they last 6+ months and are still open let me know.  Which campaigns pay a higher rate? PlayToDos https://bitcointalk.org/index.php?topic=1119780.0For instance Senior is 0.0011-0.0018 depending on post quality instead of 0.001. But for the avatar campaign, why not just give users that also have the Bit-x avatar as boost to their rate? I don't know sound like a simple way of running it. |
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I see, that would be pretty cheap to be fair, since the built in miner report the temps and you can use the cgminer API to display the temps and it would not be much work worth being gratified over; https://github.com/ckolivas/cgminer/blob/master/API-READMEHowever you could use external sensors and it being display on some small LED screen. Or something. Otherwise having the RasPi read the Temp is the same as reading it from your Antminer webserver, after all the software that would run on the RasPi would do it the same way the webserver does. But; trying to use an AntMiner over a RasPi is in a way kind of a pain, since the Antminer is self sufficient and would not run off the miner application on the RasPi. Personally i run M's Miner Monitor on Windows and it monitor the miner over SSH, so that's another thing you should check out, but you'll have to more clearly decide how to make it fit in your curriculum and what your setup will be. Ultimately the easiest way to do this would be to simply run a USB stick miner on a Rapsi and then maybe "engineer" some led screen to display the temps being read from the miner's API. For the purpose of your curriculum its not any less or more than getting a real miner that actually make you some money. (Check Sidehack's usb stick) But of course since you want to make some money off of it too, check out the Antminer S3's. Also check out the S1, undervolted with simply a graphite pen would probably give you the cheapest quietest unit that will earn you a bit of money. Being a non-credit project (this just needs to fit curriculum enough to not have it chucked in the bin by the Facilities staff), I'm allowed a bit more freedom, so I think a simple GUI or web front-end that monitors what the unit is up to is what he was asking for. I just figured to make it look cooler I could throw some hard sensors in there. I'm also still a little sick and not thinking completely on track. Then let it simmer and come back to me/us/here when you're decided. You'll probably want to take the API output and run it on a webserver and err, ask a friend or something to help you with the "web design" so it become your original work and not just piggybacking off an opensource Dashboard where you just "shake n bake" it -> done. You'll just need to check how to have the webserver print the value from another url's output (The API) which is also something i need to learn. (Found a script from edonkey (user) that does just that so as soon as i care to...) Then maybe just run a simple "refresh pages every 5 seconds" thing and it'll be almost real time tracking or something . Make it light up red when there's an error, etc. Sound like fun but its not exactly engineer work, more fun software related stuff. |
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For many holding, it isn't a choice. Just not enough places to spend Bitcoins, yet. I can't wait to be able to spend them locally at more places.
It's a chicken and egg.
You think so? I can buy nearly anything with it and get it delivered to my home. Newegg. Overstock. Tigerdirect. Gift card for Amazon, Starbuck, Burgerking, HMV, movies tickets, Steam games, pretty much anything digital. If you mean, going to the convenience store and getting your pack of cigarettes with BTC, then there's the BTC debit card for that. They don't need to accept BTC since the payment processor will pay the merchant with debit and will deduct the amount from your BTC wallet. So unless your local stores does not accept any form of debit, credit or credited gift cards, then you can buy anything with bitcoin. |
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