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321  Bitcoin / Hardware / Re: GekkoScience Compac BM1384 Stickminer Official Support Thread on: September 27, 2015, 07:14:43 PM
I bricked one of my compac sticks  Cry
RIP Compac #2
She still has a heartbeat as when sitting idle the green LED pulses slightly, but no more hash.

I want to be clear in saying I do not think this has anything to do with the quality of the product. I think there must have been something I did or it is a fluke. Anyone who was around when I spent weeks trying to get answers out of BITMAIN will know I am not shy about questioning quality and I have no reason to do so with the compac.

Symptom:
I woke up with a high HW count. Pulled all sticks and placed one at a time in the USB power monitoring device which goes between the stick and the hub and #2 was pulling amperage from 1.5 to 2.5 and bouncing around quickly from the low number to the high and all between. Voltage acting crazy as well bouncing from 4.7 to 5.1 and all between.

I checked the screw adjustment for voltage and have it sitting at about the 6 o'clock position relative to the pic in the OP by Novac which should be around .77 ish. I had been running them all at freq 200 while I slept. Nice Arctic Breeze Fan blowing on them almost directly under the AC vent.
Adjusting the voltage screw makes no change at all. It begins doing the herky jerky with volts-amps as described above upon insertion in the hub. Rebooted everything, re-installed everything, but same results. This is a pure hardware fault.

I don't think I pushed it too hard, kept the fan on, but maybe I let it get too hot somehow.
Or, maybe I had the voltage set too high for that low of frequency.
If she sits in the hub idle from a fresh cold boot of everything as soon as she sees power she starts to heat up way too fast, so I am assuming I have a short.

I plan to order more, and if you guys want me to try any tests I have a good meter and know how to use it, or if you want me to send it back to you for evaluation I would be happy to do so. If you want a vid, pics, etc I am happy to do that as well. I know from my own day job I have things sent back to me for evaluation just so I can see what happened for myself and many times it provides information I can use to help people avoid failures. No matter who is at fault we all learn from the experience.

One of my other sticks which is running beautifully at 200MHz at the moment shows a 4.98v 1.06a draw. I can lay my fingers on the ones running and it is slightly warm, but nothing that would even come close to making me move my fingers. The one which broke will burn my finger if I leave it there for more than a few seconds. She is throwing off the heat hard. The hub is cool to the touch everywhere.

I would enjoy hearing any ideas of what I might play with to try and get her back to hashing again, but it isn't anything I am going to cry about either. The first time I adjusted the voltage and used a higher frequency I accepted that I'd taken things in my own hands.

By the way, can you adjust the voltage live? While hashing?

Does the voltage adjustment have a dead zone?


What is a good difficulty to start with at 200MHz? I want to include --suggest-diff in my cgminer.bat and currently have it at 84 which is working, but can you recommend an optimal value? I will read a refresher on difficulty because that is what stick-mining is teaching spoiled miners like me who came after days of needing to use a Pi, everything stand alone with vardiff. Smiley

One other item just because I saw a couple of others mention the same thing is my cgminer will not write a conf file. Well, let me clarify, in the menu when cgminer is running you can select a menu option to write a conf. When I do so, it creates the file but it is completely empty.
I have done everything as administrator, from running zadig to cgminer I run as administrator.

322  Bitcoin / Pools / Re: Sidehack stick solo pool club on: September 26, 2015, 10:38:41 PM
I am on board with 3 sticks at the moment:
http://solo.ckpool.org/workers/1JiWuyX94wrCr7JhkAn7x5qNMCEef1KhqX.sloopysticks
I am running them at 275 on an Anker hub.
I ordered the wrong Y cables so am running right on the hub.
A bit of a sag measuring between one of the compac mining sticks and the hub - 4.88v 6.19 watts 1.26 amps 01722 mah
The voltage is the only number which doesn't do a dance. The rest of the values hop around the number above but stay in that range.

I will put some pics of my setup in the review thread and one here with a link.
I'd hoped to have my Y cables by now, but my own fault for not checking.  Undecided
Although, this hub is cool to the touch and running 3 sticks well at 275 MHz. I am very happy with my purchase.
I bought it from a forum member used. IT is a 3.0 hub as well. I know most prefer 2.0 hubs for mining, but I prefer to future proof when possible and this has worked out fantastic so far.

http://www.amazon.com/Anker-Aluminum-13-Port-Charging-VL812-B2/dp/B00GSLMTQ8/ref=sr_1_14?s=pc&ie=UTF8&qid=1443306835&sr=1-14&keywords=anker+usb+hub

He charged me $40.00 and put up with my wall of text questions which is worth a bit on its own.
He also had other hubs for sale but not anymore of this exact one. If anyone wants his forum handle PM me.

I plan to keep my sticks pointed here, but I will be taking one out at a time for some playing as I will be seeing how high I can stably run the best one of the batch. I also plan to order a few more because I enjoy the hell out of playing with them, and supporting the Gekkos is a way of life these days. We sure aren't going to see anyone else supporting us little guys.
323  Bitcoin / Hardware / Re: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH on: September 24, 2015, 01:34:00 AM

For the people who are unaware you may setup an account on USPS, UPS, Fedex, etc and have several options at your disposal.
With UPS you can have the package diverted as someone else mentioned. You may pay an extra 5 bucks to have the delivery window shortened to just a few hours so you do not have to sit waiting if being delivered to your home. That one is my favorite, but you would be quite happy with the choices these companies offer now, you can even select for them to leave it on your front porch / stoop, or run it around back, etc and not to wait for a sig, but I personally would never do that for something which costs this much, especially when you know the fight and all the money you will have to pay to get warranty issues addressed.

By the way if you have a fan failure, fugget about warranty. Standard BITMAIN Policy is fans are not warranty items, go buy fans locally. I won't say it can't be done as I know for a fact it can, but I decided to order a few anyway. I have a box full of fans and I also ordered a few of the 4200 RPM ones so there is no question if I use one of the exact same ones they provide they cannot cancel warranty on my S7s and S5+.
I am not complaining about BITMAIN today, I simply wanted to pass the word on the fans so people who do not know can be prepared.

Oh I know this was mentioned by someone but, I was also told by an "official" source they are shipping in the order the full payment was received by BITMAIN and nothing else matters. I believe who told me this, so just check out when you ordered versus some others who are receiving this week and you should be able to narrow down your ship date from bitmain. If you ordered the second day after others then check who else ordered second day and see if they have a ship and so on.

324  Bitcoin / Group buys / Re: [Proposal] Mining Co-Op on: September 23, 2015, 10:49:39 PM
I may also be interested.
Please put me on the list and it is the SP50 which has brought me to this conclusion.
325  Bitcoin / Hardware / Re: Will this PSU work for my new S5? on: September 23, 2015, 01:18:04 AM
What circuit are you planning to use with it? 120, 220, 240?

I have no idea, I'm sorry.  Whatever comes with it.

The cable picture is pretty good, and it appears to be something I would use in a typical 120 vac situation. Like a microwave oven or a lamp. Regular ol wall outlet in the US.

Yours is HP well, I guessed, that this is your PSU, but you do your own checking ratings.
Although I am sure you will get many people who know that model well.


Many of the larger server PSUs require 208, split phase, 220, 240, etc
Pretty much anything but 120.
I have seen the 800 and under use 120.

I didn't see where it said one way or the other.

^^^Over my head.  I don't have much experience in electrical engineering.  What are the numbers you gave?



Also, here is a fantastic reference to help in cable selection:
https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets#North_American_and_IEC_60906-2

Thanks

Otherwise 1000 watts will definitely push an S5. I think the spec is 600.

Yes, it's advertised to run an S5 and has positive feedback.  I only have experience running the type of PSUs with the on/off switch.  I don't know what these "jumper" things are other than in theory.



It was my fault for the way I worded it, but mainly your supply voltage.
What is your supply voltage?
326  Bitcoin / Hardware / Re: Will this PSU work for my new S5? on: September 23, 2015, 01:07:46 AM
What circuit are you planning to use with it? 120, 220, 240?

The cable picture is pretty good, and it appears to be something I would use in a typical 120 vac situation. Like a microwave oven or a lamp. Regular ol wall outlet in the US.

Yours is HP well, I guessed, that this is your PSU, but you do your own checking ratings.
Although I am sure you will get many people who know that model well.


Many of the larger server PSUs require 208, split phase, 220, 240, etc
Pretty much anything but 120.
I have seen the 800 and under use 120.

I didn't see where it said one way or the other.

Also, here is a fantastic reference to help in cable selection:
https://en.wikipedia.org/wiki/AC_power_plugs_and_sockets#North_American_and_IEC_60906-2

Otherwise 1000 watts will definitely push an S5. I think the spec is 600.


I haven't looked back since I started using server PSU. I must have also been given a good power supply luck blessing because I haven't fried one.
I do not have your specific model, the one you are evaluating, but in general using a server PSU and b/o board is the way to go.
Personally, I have always subscribed to buy larger power supplies but there is certainly a case to be made for the ATX model. I would say if it is a home living room or office situation where you may have people seeing and / or hearing the unit then you want something a little cleaner than the cold gray server PSU steel or aluminum.
Otherwise compare what else you get for the same money.
 
327  Economy / Computer hardware / Re: WTS (10) Bitmain Antminer S4 on: September 20, 2015, 06:52:10 PM

Whomever purchases these needs to look at the background in those pics.

I wish you well in selling your gear OP and I was interested until I looked at the price and saw the pics.

You cannot keep miners in such conditions and expect them to last long.
Further, you certainly should not keep them in such conditions and then sell them for over top dollar.

Specifically, the lack of filters and high RPM fans on the S4 pull every bit of crap laying around and lay it in patterns across the hash boards. When you have humid periods the moisture mixes with the patterns of filth and becomes further pushed in nooks and corners of components.
Depending on the the exact makeup of the crap you have laying around versus what someone else may have is how fast the break downs start to occur.

Pull one of the S4s at random, pull the covers, and take a magnifying glass to begin viewing the side of the components which would be against the incoming flow of fans and you will begin to see what I mean.

If miners are kept in a dirty, filterless environment then expect to have early death.

Having said that you can clean them up and get filters on them sooner than later.
Unfortunately you cannot stop anything organic, such as rust, but you can stop other, milder organic growth, and remove the lager pieces of buildup.

YMMV, Buyer Beware, and on and on, but I have seen a buddy of mine make the same mistake.
#1 clean the area and keep it clean.
#2 Filter, filter, filter and you still have issues in any home environment, but not as bad as without.

I would be interested if it weren't for price and quality.
These should be priced much lower.

Good Luck and I hope you are clear to people regarding what they are getting.
How long have you had them and how many times have you pulled the covers?

 I am not going to ask if they were kept in a positive or negative pressure environment...
328  Bitcoin / Hardware / Re: [Project Assistance] Have Access To Free Electricity, but... on: September 19, 2015, 12:25:28 AM
Oh this isn't a graded project. Told that professor I wanted to set up a mining rig to pay my electric bill and buy me a 6-pack. He said if I can turn it into a project of some sort, it's all fair game.

Seriously though, I think that should be the deal, two S5's set up in such a way as to compare a modified one to a stock one, performance, power usage, noise levels, etc. The amount of web development in there wouldn't necessarily detract anything from the fact that things have been customized and added and research done. In all reality, the attendance/acceptance numbers for the department appear to be down, and I think anything to attract attention to those on the fence or who haven't quite decided exactly where to go (there's about 3,500 of those last time I checked) might decide engineering. Department needs em, "industry" needs 'em. I don't blame em for bribing me to come up with a project to attract people.

I can also completely understand the noob/spam thing. Just not sure when the timer goes down to something reasonable.

I'm confident whatever is there will be great. Exposure in general is good and making the case for a home miner is always great with all disclaimers stating you will lose every penny so don't spend what you cannot afford to lose. I know you are asking for build advice not legal or anything else, but throwing that out there to always protect yourself.
Look for opportunities when you do this. Talk to people in areas you may not already and take on an educated peer in the project who can be useful and teach you things. Because why not.

Show solo mining vs pool mining. Expand on the future of decentralization which is the opposite of what is needed.

Assuming you have any safety consideration including power and ventilation and IF "money is no object" and you're a gambler, get the S7.
-- another PC disclaimer:
It sounds like You can probably make more buying and holding.
...At Least I am told that quite often.

With what I see happening I think you are going to see the community underclock the S7 with variable voltage power supply or some equivalent. The string design has some folks doing some work. Get a power supply, or actually  get a couple. You can really show efficiency in a real world environment where it defines the landscape. You could even get a little political about efficiency in general, and how we are robbed of it every day. Off topic

I think:
Introduction to: A Bitcoin Miner: Attempt 1 --The S7
Main Body #1: Setup, Operation, and Maintenance --The S7
Main Body #2: Meet a Miner - Efficiency and Difficulty
3 Centralization
Running a node
Live Web Display with wifi camera  Smiley

I think what you are doing shows initiative, but be safe, and... I'm saying this figuratively, but get insurance on yourself in this situation relative to the school. Do not let someone do something stupid and you get burned with some 30k bill. Same for you too, check the wiring yourself or have a qualified person do it if you are not. Make sure you do not catch someone else's engineering project on fire, or them you. Make sure on the noise, even underclocked with great fans an S5, S7, will be noisy. If it isn't an issue, great, but don't think it won't be loud.

More than anything record it, take notes, and take tons of pictures and video.
You might make a youtube channel people can follow.

Easy for me to say all of that huh?
Good luck, I hope they see the initiative.

Explain the blockchain to everyone.



329  Bitcoin / Hardware / Re: Bitcoin Core calculator, can it be home brewed? on: September 17, 2015, 01:40:48 AM
I haven’t abandon this idea, I've been reading on how to calculate sha256. the more I'm rubbing my brain into it the more its picking up.. Step 1, almost complete! 1000 odd steps remaining! Yeah!

Also, here is something interesting: Sha256 on Spreadsheet in google docs.

And: PDF on Hardware Implementation of SHA-1 and SHA-2 Hash Functions.

in the other side of life, my laptop doesn't like having 16GB up its cloaca.. memtest+ dies, ubuntu goes in kernel panic if the sticks are the wrong way around.. anyway..

I gotta ask:
1. Did you start making the giant breadboard yet?
B. Did you try the ram in a different PC / Laptop to prove it is OK?
3. I hope you do this and make that giant thing. You should do a charity auction afterwards. Or, put it all to mine to an address for a charity. I bet there are plenty of collectors, and normal people (like me)who would bid something on it as an art piece.

330  Bitcoin / Hardware / Re: Best Bitcoin Mining hardware ? on: September 17, 2015, 01:35:56 AM
It's the law of free markets, if cloud mining were as profitable as many would lead you to believe, why wouldn't the operator just mine for themselves?  Huh
How funny !!! Then why ASIC manufacturers sell ASIC ? They were supposed to manufacture and mine themselves. Roll Eyes

The only company selling miners to the General Public is BITMAIN.

I will not say what I think regarding BITMAIN mining with the equipment before it leaves, but there are plenty of threads and comments where you can make an educated opinion on the consensus.

Look at every other mining equipment manufacturer. No one has a product for the end user on the market or states they will be coming to the market, not one.

They are all mining for themselves. That is exactly right / correct.

Now, if we were talking about it being wrong or right...

Seriously, unless you are simply trolling, check it, the largest miners mine for themselves. I hope we see a season of competition. The mining industry is at its worst in the summer because (according to Gavin heh) they are outside. To a point I see it because of the heat factor. If we do get a couple of different larger scale S7ish type miner models to choose from and the prices are closer to last year relative to hashrate, I bet there would be some people taking a bigger gamble.

I am not going to borrow money or make charges to one of my credit card for miners.
If I was in a situation with a large building and great power rates then I would reconsider.
At this time, I have other things which must be a priority.

It would be nice to have a 200,000 sq ft warehouse full of miners you could go play with and maintain everyday. Hard work to do it right, no doubt. I would much rather have only my monthly payments to make though. If I borrowed 200,000 dollars and had to make that payment plus everything else I would not sleep well this close to the $150.00 - $180.00 mark for the price of BTC.

If you did it right though, AND you did it at the right time, AND were very lucky and smart you could still do very well and pay back that loan. I'm hope to see photos!  I Gotta get back to work buying birthday presents.

PS

BITMAIN warranty answered me! Yes...
331  Bitcoin / Hardware / Re: Exclusive 1st Review: Bitmain Antminer S7, 4.8+ th/s Using Only 1250 Watts on: September 17, 2015, 01:09:28 AM
He's referring to aftersales support, methinks Smiley

I can't tell I can see it both ways with translation.   Google translate is good for general read but specifics can be hard.

We need an native reader.  Please if you understand reading it tell us if he bought direct or not first hand.

I read the same translation. I think he is talking about factory warranty service.
Either way, I feel bad for the guy, a new 2,500 USD paper weight S5+ across the floor not running would be very disheartening.

I hope it turns out that it isn't their after-sales support. I think we can receive clarification fairly quick if it is made clear in the review.
There are always two sides to the story. I have to keep that in mind, but if anyone is personally waiting since last week for them to get back with you about a warranty replacement I could see where you may be biased. That kind of situation can turn someone's mining game bad quickly.

/knock on wood - I am going to keep thinking positive   (and probably order some fans)




332  Bitcoin / Hardware / Re: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH on: September 17, 2015, 12:55:42 AM
Odd someone (regular member) sent me a PM telling me not to put ideas like upgrade kit.   I've never been told not to talk about an idea. Basically since it looks designed for upgrade or a + version.

Never had another member try to censor me before.  And it was designed by bitmain I had nothing to do with the modular setup or how it's made.


 Cheesy Maybe it's because Bitmain's record of upgrade kit let-downs has made them miserable, and they don't want to bear the disappointment one more time?  Shocked

In all seriousness, I would have told them to take a long hard suck on my arse.  Mods don't even police obvious scams to try to help protect inexperienced members, why the hell would anyone care to censor ideas like that?  Roll Eyes

Edit: unless it was dogie, who just wanted to take the credit for it himself. LOL!

If / When, (I feel more like when) BITMAIN does an S7+ they aren't jumping to a new chip, so it certainly cannot be that much bigger than S4 to S4+ ish. I don't mean to say they cannot make something better which is a huge seller.
I can see the S7 modules all coupled together down racks running 3 or 5? from single controller boards.
Putting more hash in the box isn't really an expectation at this point.
They can certainly take care of anything, add functionality, and tweak things to gain a good bit, but not replace your farm bit on an S7+ for farms putting everything in S7s, which I think must be a large amount.

Regarding this regular member saying things in a PM to edit your post.
What is he actually trying to do? Troll? Or does he really care about what you said? 
If it was a comment regarding a company, for example, BITMAIN's S7 and / or business practices, customer service, or pretty much anything to do with BITMAIN while creating and servicing the S7... this is the appropriate place for it.

I enjoy seeing the mining hardware revolution. I do not enjoy the little guys being squeezed out and do thank BITMAIN for bringing anything to market. The S5+ is a good product, but it does have fan failures. Tupsu had more than a fan failure, and I hope it didn't leave the factory loose and it was all shipping. There is a reviewer on the S7 who mentioned his fan didn't work. I'm patiently waiting on BITMAIN to answer me about a warranty fan. It is still a good unit. The S5+ has a good Aluminum structure and that is what they billed the S7 as. Tupsu received a Galvanized frame / chassis. Galvanized Steel will rust but it takes much longer than plan (A36) Steel. Unless you scratch and get water on Galvanized it wouldn't rust bad enough until well after you would be done with the miner, but still it isn't Aluminum. Aluminum will not rust. It is also a much better thermal conductor than Galvanized. Go with the Aluminum option if presented.  In a huge farm though, it could save a nice chunk of cash. That is probably why that S5+ was Galvanized.

Say what you feel like saying. Screw that guy.
333  Bitcoin / Hardware / Re: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH on: September 16, 2015, 01:00:56 AM

Quick question:
Am I crazy for asking Bitmain to cover a fan failure on an S5+? -- which is still pristine and was running perfectly even when the fan failed and I caught it.
I've been trying to reach someone there since Friday. The same day I ordered an S7. Ironic huh?
Called Colorado like always, this time they tell me to go to zendesk, email there, they send me to email info@bitmaintech for all RMAs.
Is this normal for everyone who isn't spending a good bit more than maybe I am, or just random, or normal response?
I received the obligatory auto-generated emails from zendesk, and they will sell me a fan. I told them I want to make arrangements on the warranty replacement and then I'd get with them, depending on shipping they have a reasonable price for these S5+ fans I hope. The fans remind me of S4, tough frame.


That was two questions.
It'll be OK.

334  Bitcoin / Hardware / Re: Exclusive 1st Review: Bitmain Antminer S7, 4.8+ th/s Using Only 1250 Watts on: September 14, 2015, 02:06:58 AM

Quote
 Buy a used pdu on ebay  get one with amps reader in it.   I will look for a link.

http://www.ebay.com/itm/BayTech-RPS30ADE-10-Port-Power-Distribution-Unit-Strip-PDU-240VAC-/400787099325?hash=item5d50c5cebd


he says display works.  question him to see if the display shows
1) amps
2)watts
3) volts


Thanks Phil, will check back in these again, it has been a while since I looked. Anything I found which handled a decent amount of 240 and displayed readings was out of my ballpark. You seem to find some deals though Smiley I will check this one out.
I am realizing it doesn't have to be something I leave each miner on, I can just use it as a diagnostic tool from one connection to another.
Rather than using any PDUs I made my own cables which run from disconnects mounted by my sub panel which is 10' from my miners. I put 10 gauge copper SO from the disconnects to junction boxes where I split off 12 gauge SO runs to individual power supplies. A good PDU setup would work much better, but my 10 gauge was free along with several connectors. Junction boxes where I solder the 10 gauge and 12 gauge splices is cheap too. Although my time is worth something as well and I spent a large amount of it doing it that way. Heat Shrink is damned expensive though.

Appreciate the info.
335  Bitcoin / Hardware / Re: Exclusive 1st Review: Bitmain Antminer S7, 4.8+ th/s Using Only 1250 Watts on: September 14, 2015, 12:25:24 AM
Looking forward to hearing if S7 responds to undervolting and clocking?

If it does function I am guessing at 10.8V & 425MHz we might see 3450GH & 650W ?

Rich


It would be so nice to be able to order an extra one 'just to play with' so you never had to take the 'others' down. Smiley

I bit the bullet and ordered one. I have been following the thread where you, Phil, etc have been discussing adjustable voltage PSUs. I would very much enjoy seeing a solid delivery on the aforementioned undervolt and the PSU you guys think can do it while maintaining a solid efficiency.
For anyone interested the thread is here:
https://bitcointalk.org/index.php?topic=1151460.0

The points I have picked up are:
1. Plan to start the unit closer to 12v and then adjust the input voltage for maximum range.
2. Watch for a consistent increase in HW errors and you know to back off.
3. You seem to require a specific S5 board version. RICH goes in detail explaining his in the thread. I hope someone can show an S7 board to see if it has the same components.
I understand Rich's disclaimer: he isn't stating this board revision is exactly why some units overclocked and others didn't, but he is pretty damn sure.

D. The thread is a fire starting for the people who are interested in getting the most enjoyment from turning knobs, electricity, and adjustable power supplies. Good stuff


I do not forget the few months wondering if I would be able to purchase something modern but I am happy with everything so far with the S5+ quality except. 1 Fan failure and 1 heat sink which wasn't cut out properly. The front of it was still full of material. It is installed on the front where you had to be able to see it when installing a fan. Pretty glaring. Although, if that is the worst I have to deal with, no worries. I spent the day friday e-mailing with bitmain support. Started with Colorado and after e-mailing a few times they sent me to zendesk. After emailing zendesk a couple times they sent me to china. Unusual route for me this time, but this is what they told me to do.
The fan quit. As they have for several people on the S5, S5+ and even one of the reviewers posted about an S7 he just received with a non-functional fan.
I confirmed 100% it is indeed the fan which failed on the one I have. Not the controller or wire.

S5+ Runs great on dual 2880s.  
#1 2880 running S5+ left and center module -- using 2290 watts
#2 2880 S5+ right module, S5+ control board, a stock S5 and a underclocked to 1100ghz / 630 - 650w SP20 -- using 2385 watts.
(These amounts are based on a small sample and could be off 20%, but I do not think so.)

Like some of the better PSUs you can run a high load on these 2880s and (do not do this unless you know what you are doing. I am not recommending anyone do anything I say) I don't think it is an issue to run the S5+ on a single 2880, but it isn't as efficient. Not saying anything most do not know. As a matter of fact it would probably be pretty bad because the way they really taper off in efficiency at the maximum or exceeding maximum load. Many miners will tell you it is easy to make your power bill jump fast or lower in that same time frame by properly loading your power supplies. It would be amazing to see a modular PSU system with load balancing in a kit form to provide 1x.x vDC to a bank of string design miners and then compensate based on history of which miners didn't run well at whichever voltage. I know with the S5 and assume with the S5+ it matters if you have a specific revision, but the trend you saw was the addition of those components so it is safe to assume the S7 did have them is that correct?
I think several miners who can afford to pickup 5 - 10 or more S7s would happily pickup a newer revision PSU "system" which allowed for a good underclock. It does appear that some are able to go much further than even some of the ones with the right boards, but I'm confident a recommended setting could be made by you guys.

I plan to change some things around with the power so I have a little more load on #1 and #2 2880 PSU. (I do not recommend anyone ever overpowers a PSU!!!) One time I ran one of Jabberwocks 2880 boards with every slot filled with S3s using 2 cables per S3. It ran for several days and the only casualty was a few of the S3s ran a little odd and lost hash overall. (Seriously, the people who know what they are talking about will tell you do not do this. Do not plug in too many things. Add 20% to your calculated usage I was with my units the entire time, but it was still not worth what could have happened!) It was around 3300 or 3500? watts, I do not remember exactly. in my bedroom. The white noise was a little much, but I do enjoy the noise in general. I am sleeping with an S4 at the moment. That sounds sick huh. The S5+ and S7 are not coming in unless I get very cold.

MY personal disclaimer because I feel like I should for some reason:
I understand investing in any new miner may be a bad choice, if that is what I do, invest. I willingly spent my currency on modern miners. (This is for the people who keep telling so many they are idiots for purchasing mining equipment. I get it, buy coin, I agree, it would be the safer thing to do. Point made. Give it a rest, the price is what it is as well. We are all going to hell for buying new miners. Understood)

Cant wait to see what you guys come up with for the S5 and S7 Rich. I bet Phil could sell a million power supplies if you roll across the right one with a delay (relay?) to handle adjusting the voltage.
I am gonna go play with some Gekko compaq sticks.

**EDIT** Yes, sorry, edit after my WOT, but I will be as short as possible. Help requested and very much appreciated:
Major, Rich, or anyone, please tell me what you are using to measure power usage on your split phase 120 / 240 vAC lines. I have a kill a wat for a single line which I could discombobulate some things to read one line, but Ive been told the 240v kill a wats are expensive. I have a good meter with a record function, true rms fluke 87. Not the best but a decent meter which is calibrated every few months. I also have a AC DC amp clamp where it connects to the meter and displays 1mv = 1 amp. Should I set it on AC amps and measure / record each line of the split phase for however long the meter can save and average out based on that? It may be the best I can do with the equipment I have, but I would sure like to be able to attain instant feedback in a painless and inexpensive way. I can afford something reasonable, but not the hundreds or even thousands I see charged for proper long term measuring equipment.
Any advice?

Thanks people!
336  Bitcoin / Hardware / Re: GekkoScience BM1384 Project Development Discussion on: September 12, 2015, 11:18:30 PM
Then, just when you need your ice cold Bud most
Come now, nobody needs beer. Complaining about a shortage of luxury items as a comparison to a shortage of utilities seems kinda foolish.

It is not. It's an illustration of the principle involved. The guy that sells you Bud, for profit, has every incentive to sell you more, and to do so everywhere and every time. He has to compete with all the other beer sellers on quality and cost, thus driving quality up and prices down. Pure benefit to consumer, and beer makers slaughter each other to give you the best product.

Everyone needs bread. Should the gov't create a bread monopoly such that the extremely poor would always have some protection against the eeeevil food companies that won't give a little bit of bread away free? I mean, we do that with power. Let's just pass a law creating a Department of Bread, then ban Allinson, Alvarado Street Bakery, Arnold, Ball Park, Beefsteak, Bimbo, Brownberry, EarthGrains, Entenmann's, Eureka! Baking Company, Francisco, Freihofer's, J.J. Nissen, Mrs. Baird's, Old Country, Oroweat, Sara Lee, Stroehmann's, Thomas', Tía Rosa, Weber's, Bost's Bread, Breddy, Dave's Killer Bread, Davidovich Bagels, Flowers Foods, Holsum Bread, King's Hawaiian, Lender's Bagels, Merita Breads, Mother's Pride, Nature's Pride, Pan Desuyo, Pepperidge Farm, Polarbröd, Rudi's Organic Bakery, Schwebel's Bakery, Sunbeam Bread, VitBe and Wonder Bread, and all the tens of thousands of other bakeries out there from selling anyone bread that wasn't provided by Federal Bread and Water Co. Think that's a smart plan? I mean everyone needs bread. It's not a luxury anymore, it's a necessity. Let's make goddamn sure those bread companies won't shut down people's bread supply after six months of not being paid for their bread.

There are any number of entities that are capable of selling you power right now, with no, or minor, changes to the last mile. Most, if not all, are forbidden by law from doing so or are bound by thousands of pages of regulation such that it isn't worth the effort.

Why *anyone* thinks that limiting to one the number of people that can provide you power somehow *helps* anyone or drives costs down and quality up is beyond me. It doesn't happen.




I agree there are not enough options for people when it comes to their power company.
There has just been a rate increase approved here for one power service, but not the other, which was already less expensive, but you must live in a specific geographical area in order for the less expensive company to be able to provide service. There is literally one neighborhood with one company, and the next subdivision over and on is the other company. Like an imaginary line is drawn.  

However, like the cable and cell phone companies it is not due to a law these two power companies do this, it is their agreement.
Similar to how AT&T and Time Warner or other companies in the same line make deals not to step on each other so they can both charge more.
 This is an obvious weak spot in a capitalistic system. I think many / most want less government interaction, but how else do you stop companies from doing this if you require their service for your own business?
A good argument is to say well someone else could start a new power company. I think we would find just enough regulation and stonewalling from the existing power companies to make sure that is a no win situation. Unless, the right person did it on principal and was extremely wealthy. You aren't going to find a VC to finance a project like such because they are interested in profits. It would be nearly impossible and certainly not profitable for a generation or so.

In the case of power it is not considered a luxury by me, but it is by the government except in specific cases where there is a potential for a loss of life directly relating to the issue of not having power, e.g. a hospital. Which in those cases if you cannot pay your power bill there are government programs to help do so. I know someone who had their power bill paid for at least 6 months. I do not know if that was federal or state. The government also considers the toothbrush a luxury, but I sure as hell do not.

I would consider beer a luxury, and I think most of us could agree what a luxury is.
I do not see how power or a cell phone or beer determines what can or cannot be a monopolized industry. We have laws against it. I remember hearing stories about Ma Bell being broken up by the government because it was such a monopoly. I sincerely believe it happened because the right people made money from it breaking up a specific way. Obviously AT&T are doing great and still tearing new assholes in tons of folks every month right along with the co-conspirators called cable companies and other cell companies.

 The thing is, we all complain about our government in one way or another, and we keep electing the same type of people who follow the same status quo. Bush, Obama, it hasn't been such a huge difference in the biggest picture. Our economy is in the crapper because of the system which has been twisted. If we stayed true to our constitution we would be in a much better position. I do believe we have to modernize some things as we go, but we have allowed the supreme court to make decisions which should have never been up for a vote. We are caught up in things which are serious, but not the real issue. The real issue is our system has been perverted and until someone who isn't selfish, understands economics, and is willing to take the heat for a generation of setback to put us back on track as a civilization we are in a death spiral for which there is no stopping. China will have the Yuan added to the basket of approved worldwide fiat next month. The oil dollar is coming to an end. When it is time to make decisions we are distracted by the news telling us about someone smoking a joint in college, or yesterday for that matter. Why do so many people care about that crap, but they don't care about China having a world currency? I can answer that, it is because almost 50% of our country are receiving some form of government provided aid. They don't think they need to care about a real issue. They do not realize the government is not going to be there when things do go south and that check isn't going to turn into currency one day.
I know some folks need help. I know many more who do not but ask and receive anyway.

Why did I ramble on that path from talking about government and our power companies?
It is our fault because we keep putting up with it and once people realize we keep electing the same people and the line isn't between dem versus repub it is dem and repub versus the common man. Then and only then will most people's heads slowly begin to emerge from their anus and with a giant popping sound we may once more be the country we like to envision ourself to be.

Seriously, consider what it would take to turn things in the right direction. We would need to give up some real "luxuries" for a while if we wanted the next few generations to have them. Maybe the baby boomers gave up many lives in world wars, I know my father's generation gave up enough of their life, and lost many lives in Vietnam. Is our sacrifice one of doing whatever it takes or giving up whatever it takes to get our supposed leaders to realize we are tired of hearing the sos?

I'd definitely be on board with giving up things if it meant it made an even bigger difference to future generations but like most I fear, it seems like we are not going to be able to fight the system, so let's have drink, light a smoke, and live for today, right?
MY USB hub showed up. Must get to setting up equipment for a Gekko partyyy!
I'm not changing the world tonight, but I am going to have some fun with my stick miners and a luxurious bottle of something or other  Grin

I do not have the money to start a new power company, or change our economic system, but I will damm sure keep voting and carrying on like someone who does Smiley


337  Bitcoin / Hardware / Re: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH on: September 12, 2015, 07:21:40 PM
I think it depends on the scale.  If your largest monthly expense is your electric bill; its not really a hobby any more.

yeah this is pretty much the case.

In the dead of winter I have done 690 usd for a power bill running 22 gpu's and 11 pc's

Kind of not a hobby at that point.

Now have I made a lot of money since 2012 no.  Maybe 7k in 3 years and 3 months .

So it is a business but not too big in my case.

If you ask me, any hobby that has a potential for profit is fantastic.  People spend tons of money on other hobbies that have no profit potential at all.   As long as you're enjoying what you're doing and having fun.  Sure mining might not be the most exciting hobby.  Really once they are set up and running there's no fun in watching the lights blink and the fans just spin and your bitcoin wallet balance increase at a glacial pace.  But some people just like playing with the new hardware and tweaking things to get the most out of it.  To others hash power is like horse power.  You can never have too much of it.  In the end this has taken up a lot of my time and I probably made some money in the long run, but if I didn't do this I'd just end up spending money on another hobby that keeps me busy but with no return.  So even if I lost say $1000 on mining, I would call it the cost of my hobby.

pretty much on the same page as you.

I use to build audio speakers ------------- good sound  but spent a lot on this.

I used to build pc's  ---------------------- was fun did not make much coin  mostly lost money
then up grade mac minis -------------  made a few thousand a year at this and always had 2 or 3 top of the line mac minis in the house.
then pc/gpu mining rigs ------------ made some money

now tweak asic rigs ------------------ makes some money

still build pc's for friends

mining has been the most fun  the feb mar apr 2013 run up

the sept oct nov 2013 run up

so much fun. more then any of the other hobbies.





I fully agree here and have rambled on about how a hobby can have so many positive attributes, byproducts, or however these things are worded.
You can feel good if you are idealistic and consider with a hobby as mining, if you support the right type of pool, hence the pool's ideals and opinions you are helping the network. This may lead to discussions of morality or even how you as a "little guy" may have a horse in the race with the big guys.
You protect the network, or help to do so.
You allow for future growth by simply turning the miner on.
You also have the potential for teaching others through your existing hardware. Be it PC items such as networking, or electrical such as using 240v versus 120, not to mention how it all converts to DC at the power supply and used at the miner

There are so many more good things from this 'hobby', but as someone else stated, the potential to break even, or, that word profit may apply for some folks.
It sure is fun to simply make some LEDs blink, see numbers climb, and see a balance increase. 
338  Bitcoin / Hardware / Re: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH on: September 12, 2015, 04:10:26 PM

The S5+ came with the same instruction regarding you must populate all 3. I thought someone already proved it could be ran with 2 of 3? Tupu?

Although my opinion is to still use all 3 which is how "my friend" runs his S5+. Why ask for trouble when it is so inexpensive to run this way. Cables are cheap unless you are building a mega farm.


If you're thinking about me, then the answer is no.
I have 3 x APW3-12-1600-B2   and 10 x EVGA G2 1300W so I do not have a need for it.

But I believe that S5+ is working well with 2x PCI-E cables on single board.

I was thinking about you, but obviously I was incorrect.
However I agree, 2 of 3 probably will power the unit without issue, but as notlist3d stated, it will stress those two and any slight error in pin connection, cabling, etc will be exposed in a bad way. The same thing could happen when using 3 connections, it simply isn't as likely, but if you are using cheap products and buying cables from people without a reputation at stake then I'd say it doesn't matter as you are doomed for having an issue.
I will stay with 3 connections when I spend 5 - 10 thousand dollars on miners.
339  Bitcoin / Pools / Re: [2900 TH] Kano CKPool (kano.is) from the cgminer devs [0.9% PPLNS] on: September 12, 2015, 04:17:50 AM
Not all the spikes seem to apply at the same time. But some does, so it doesn't seem like a single unit, but not always the same either. I have that with my S5, maybe you have a combination thereof?

Maybe if you tell us what miners they are it could help shedding some light.

The big one is you blatantly losing connection for a few minutes however.
On the graph:
Big one is S5+ single unit
S4 single unit
SP20 multiple units in operation single unit shown
S5 same as SP20

I am thinking network because I am not pulling 50 amps continuously and I am sized well under 70%. #2 copper runs from the main to the house to a 125 amp sub panel. It is ran inside liquidtight. Good stuff. I have checked all connections and measured solid line voltage, always slightly higher by a small percentage. No fluxuations my fluke can pick up, and it isn't a scope so there is a ton you cant see with a meter.


Well all I could suggest is to run some sort of network monitoring to see if your network is dropping out.
I'm not a windows fan so I've no idea what to use for that.

I (or course) run a linux box (using pppoe) as my network connection at home so I see when my network drops out and reconnects - and that matches the times when my miners drop out and reconnect. I force this once a day, but it often happens at other times also.
In my case it's just the way it is with my ADSL connection (last night from 10pm to 4am it happened 6 times ... only one of those was my daily reconnect by design ... that was the worst number in a long time)

There could of course be other reasons, but e.g. if it was the miner dropping the connection you'd need to monitor that somehow in the miner.


I am leaning towards net, I loaded a couple of things like wireshark but I haven't seen anything obvious. I will need to be more familiar with the software and how to configure it, then it will be most useful.
I want to record packet flow at my router right?

S3+ could be singled out in that chart as well and looks the same way, most of the big spikes line up. but I think it shows there is a definite issue being magnified on larger miners.
Harmonics?
It is the above listed minor small nano farm on the generic wire shelving you see in many pics. I use several 2880 power supplies with b/o boards from Finsky and Jabber. I supplement using DSP2000BB PSUs with top shelf b/o boards from sidehack and novac of Gekkoscience. Solid work, and they can take some stress if you have a power supply down. You can push either one of these hard if you need to do so. I do not recommend exceeding any specifications.

I am interrupting the thread with hardware troubleshooting.

Thank you fellas for the replies. I will take a stroll through my connections again and swap some cables, think simple for a bit and proceed.

Much Appreciated and thanks for the solid pool, I'll get my connection solid as well.




340  Bitcoin / Hardware / Re: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH on: September 12, 2015, 12:55:58 AM
Video should be available at this link in two minutes or so: https://www.youtube.com/watch?v=5UFGEXyduSA

I realize there isn't a great comparison for how noisy this miner is, but it sounds about the same as your typical vacuum cleaner on high speed.

Be sure to let me know if you have any other questions I can answer, or want any more pictures of the unit.

@suchmoon I can test that out in a minute and get back to you on what happens, but yeah I suspect it just won't power up.

great video, thanks, man
if you want to be a little more detailed, can you measure noise in dB with your Android/iphone from 1ft or 1m distance?
the app is called "dB meter" on iphone
there is also sound meter on android

Yeah, that would be great. Although it's pretty clear that this is not a bedroom miner  Smiley

The S5+ came with the same instruction regarding you must populate all 3. I thought someone already proved it could be ran with 2 of 3? Tupu?

Although my opinion is to still use all 3 which is how "my friend" runs his S5+. Why ask for trouble when it is so inexpensive to run this way. Cables are cheap unless you are building a mega farm.
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