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281  Bitcoin / Mining support / Re: Summer Mining - Fans/Other summer equipment on: May 03, 2015, 03:55:36 PM
You can vent from ground to window air would be sucked across the building to another window with a fitted tube as the solar tower.

Without having to penetrate walls using existing windows.


Black culvert pipe could be your vertical tower and that is vented from the window on the southern side of the building with that makeshift venting you made.



Install a ground pipe on the north side and use your makeshift tubes to vent through your window.

No fans required if you can get a good seal on the windows you will draw heat continually out of the building day and night.

282  Bitcoin / Mining support / Re: Summer Mining - Fans/Other summer equipment on: May 03, 2015, 03:40:36 PM
Combination of solar tower to draw air out and a ground pipe buried to bring cool air in. Fans might not be required.

Need to see the building or diagram to design something that might work. With the right temperature gradient you don't need fans.

https://www.youtube.com/watch?v=piTCRDIAE_0
283  Bitcoin / Mining speculation / Re: Do you think mining will be profitable again ? on: May 03, 2015, 03:20:12 PM
It already is profitable for KNC, Bitfury and others. That is why they don't sell to home miners and mine their own massive farms.

Will it ever be profitable for the home or small miner again? No it will only get worse see what Spondoolies Tech has done? Partnerships to build larger and larger hash rate farms with higher and higher efficiency. You can't compete with that at home. Game over.
284  Bitcoin / Mining speculation / Re: Next consumer model miner on: May 03, 2015, 03:11:20 PM
I'd be interested to see what Avalon comes up with as far as new chips. If the efficiency and price don't suck, we'll have to look pretty seriously into working with them. SFARDS really seem proactive (so far) on assisting independent development, which is great, except high-current BGA and dual-algo are both things I wish to avoid. More so the package, really.

Yeah, small miners below several hundred GH/s would be useful mostly as learning tools to get noobs in and understanding what the whole system is about, and how much fun it is to tinker with stuff. Not a lot of intrinsic profitability, but nonintrinsics abound when you consider how much knowledge can be gleaned from a sub-$100 hardware purchase when the hardware is designed to be flexible.

Think of something like the Raspi of miners.

People can utilize it for any number of educational or developmental purposes.

I imagine a small, quiet, low powered miner that could operate on DC with a battery pack and solar array. Hobby powered miners.

Except 12U 16KW machines.

What I'm interested to see is why exactly those machines don't scale down, or are modular. What is the functional unit that is 16KW and 12U exactly? What becomes more expensive when you try and make it 8KW and 6U? Sure would be easier to move. Even Bitfury went with ~4U and 2-3KW in the previous gen.

this is a good question.

A 30 amp 240 volt circuit  = 7200 watts de-rate to  5760 watts . Why not have the  units at this size 5500 watts  and  16th 6u high.

I could do this and I know many home miners can step up to this.  

 But as sidehack said  this would knock  a lot of miners out.

F2pool has around 9000 miners actively mining.
Btc guild has more then 4000 miners actively mining.
Bit minter has many active miners. over 1000.

Lots of them are under 1th why shut them out?
I think we need thousands of little miners. Far more important to the system then 4 or 5 giants.

Pools are on the decline. I doubt that many will survive longer term. They might hang around for 12 months tops my guess if they are populated with die hard miners with only a few TH/s at home. The death of small scaled mining has started and the weaker pools are the next to fall.

285  Bitcoin / Hardware / Re: Unofficial Spondoolies SP20 thread on: May 03, 2015, 02:17:49 PM
One small item of note. While I completely agree that 4 underclocked SP20's are the way to go, Phil's "open door" picture might be a shade misleading. At the time that picture was taken, I'll bet the air temp outside was 5C or less. It's not obvious to me exactly how to best cool a miner when the incoming air is 35C. I get the exhaust plan and all that, but you can't get low temps when you start with 35C air.

Dig a trench and bury a pipe and pull the air into your space vent it out upper window. If you have the space to do that that is and vaulted type ceiling with a window higher in the vaulted space.




286  Economy / Service Discussion / Re: StakeMiners.com on: May 03, 2015, 01:59:14 PM
I have withdrawn my investment payment is being received.
Felt it wasn't fast enough.

Was charge a 30% withdraw fee on my 2.0001btc investment.

https://blockchain.info/tx/2540cf1b407043bf078b54be6d254c5be77f61752501f662e14b1398f4852e91



Bitcoin transfer unconfirmed will update when its cleared.

-edit- refund cleared

So you lost BTC on this investment?
287  Bitcoin / Hardware / Re: Future mining powered by Tesla? on: May 03, 2015, 12:20:49 PM
Viable in Saskatchewan. Plenty of sun and wind to make a DIY system off grid. It has been done for home power.

http://electrodacus.com/

http://www.youtube.com/user/electrodacus

https://www.youtube.com/watch?v=VxZF8J7wrww

http://www.alibaba.com/product-detail/3-2V-50Ah-LiFePO4-battery-GBS_60022436969.html

Guys doing it right now and not in the tropics as Saskatchewan has a lot of sun cloud free days.

For mining though? Now doubtful I would agree.

Solar mining doesn't make sense unless you have access to millions of dollars and do a grid tied system and get the system so cheap that the economy of scale would give you less cost per kilowatt hour even with the battery system very doubtful.

This whole 'concept' is a sideshow. Unless you live in the tropics, solar is not viable unless it's heavily subsidised. To buy a 4kW panel at trade prices is still nearly 1,700 dollars, that does'nt include the inverter and other electronics and that price won't  fall much in the near future. Read this article:

www.forbes.com/sites/christopherhelman/2015/05/01/why-teslas-powerwall-is-just-another-toy-for-rich-green-people/

Storing energy in a battery isn't energy efficient, end to end you will be lucky to get 70%.

What would be much more efficient, if a little tricky, would be driving an asic at 0.6V directly from a solar cell. It's a diode, remember? ...... No power supplies, no DC - DC, no power factor. Trouble is, no sunshine at night, and lots of supercapacitors needed for low voltage storage.

288  Bitcoin / Hardware / Re: [ANN] Sfards: SF3301 Datasheet Open Source [Updated 30/4/15] on: May 03, 2015, 08:33:42 AM
when do you think that they will ship a working miner?

most likely they will.  they sprung from gridseed hubs,blades & 5 pack blade.  So they did make very good LTC scrypt miners last year.

No reason they can not make one  of good quality.  Still at the same point when and how much. As always time keeps on ticking ticking into the future….

They have the money, they have the people and experience.  So they should be able to make a working miner.

What it ends up being, or what it will be on spec is unknown.  It does seem they are not in a hurry, they are taking it slow.  Likely focusing on profit not how fast to pump it out.

Who are they going to sell the majority of something that is 'cutting edge' to?

Not the home market that is for certain. They might just build and farm or like every other fabricator find a deal with someone who has the money to invest in petahash volume.
289  Bitcoin / Hardware / Re: Future mining powered by Tesla? on: May 03, 2015, 08:16:09 AM
Cool, so then the people that don't have 'em can help you pay for yours.

Who is paying for electricity powered by Coal/Nuclear? You are US taxpayers. Dollar for Dollar getting people use solar is best bang for the buck and will eventually reduce the dependency on Coal and Nuclear etc. likely leading to your taxes going to something like roads or education as opposed to cleaning up coal pollution or nuclear decommissioning. Think outside the 'faux' libertarian corporate designed and built box.

Lung disease?
Cancer?
Subsidies for non-renewables?
Devastation to ecosystems?

All of the above and more.
290  Bitcoin / Hardware / Re: Future mining powered by Tesla? on: May 02, 2015, 08:37:16 AM
Lot longer than 5 years lifepo4.

https://plus.google.com/+DacianTodea

Quote
Dacian Todea (electrodacus)Feb 24, 2015
+vensonata
I seen that thanks. They are more interested in improving the life on LiCoO2 and derivative since those have 2x the energy density of LiFePO4 and are better for applications where that is important like EV and mobile electronics (life is no issue in mobile electronics) but it is on EV.
LiFePO4 already has over 10k cycles if you do not use them to 100% DOD like Sony did in their tests and got over 6000k
Also in this applications 20 to 25 years is good enough any better will not help with anything at this point.
And the LiFePO4 is heavier lower energy density but for stationary solar energy storage is just perfect and much more safer than LiCoO2.
Love to have conversions with informed people like you Smiley
[/quote ]

What DC output voltage are we talking about? It might be interesting to hack power supplies to bypass active PFC and feed high-voltage DC directly into the main switchnodes. That'd give a decent conversion efficiency boost over using AC, especially 120V into KW-grade PSUs.

Voltage
350 – 450 volts

so it's probably similar to a pack of 110 li-ion cells serial linked, if you assume 18650 cells @2.2kw

I'm not sure I'm understanding what everyone's raving about.

Is this anything more than an expensive battery in a nice case?

it's more or less that, a "nice" battery, but it's "large" and easily available. For those who need batteries for their solar/wind system, they may be something interesting, and easier to setup than the good old heavy lead batteries.
I don't know how is the price compared to the lead batteries with deep discharge needed.

What I'm more worrying about is the fact that li-ion cell are usually good for 5 years before they slowly die.
291  Bitcoin / Hardware / Re: Who Are The Manufactures Currently Selling Chips ? on: May 02, 2015, 08:03:44 AM
Unlike buying from Adam Allcock we received an invoice for what was purchased from Spondoolies. Sidehack and Novac have seen copies of those invoices for the chips purchased by some members of the group that was working on the failed miner. We offered not only chips for sale but components that we had purchased as well access to files from our Engineer. Unlike Technobit.eu we know who spent what and are still trying to recoup some of our losses on the project by selling these parts.

If anyone here is interested in giving a fair offer for the chips we purchased you can PM me.
292  Economy / Service Discussion / Re: BFL fucked us over again (redux) on: May 02, 2015, 01:49:47 AM
Your broadcasting of the ex husbands info and asking people here to contact him based on your or Gleb's evidence is that not going against the RO? Secondly have you worked through all the potential directions this could go should the ex react violently? That might endanger the children. Again Mr. Anonymous alt you should send your info to child protective services in KC and let them deal with it not broadcast it here and endanger people. At this point  your actions may have already set in motion the potential for harm to the kids. Just stop. The mods should step in and end these 'off topic' posts. Your methodology is seriously flawed if your goal is protecting children.

We? I see you and no one else on this thread suggesting this vigilante based course of action. Legally people here would be smart to distance themselves from you and this monumentally bad idea.


Messing around with ex-husbands is one thing and could be dangerous especially if you don't know the history. If you've got any real evidence to suspect that Josh Zerlan is a danger to those children report it to child protective services so they can properly verify your claims there is no need to broadcast it here. That is if you really care about the welfare of these children. If this is just messing around and just joking it is a pretty sick and twisted joke.

We are not messing around with anyone but showing this man what his children may be exposed to... http://www.reddit.com/r/WTF/comments/349300/heilhitleror/cqth854?context=3
http://www.reddit.com/r/WTF/comments/317lg8/vietnamese_brides/cpzo33g?context=3
293  Economy / Service Discussion / Re: BFL fucked us over again (redux) on: May 02, 2015, 01:18:12 AM
Messing around with ex-husbands is one thing and could be dangerous especially if you don't know the history. If you've got any real evidence to suspect that Josh Zerlan is a danger to those children report it to child protective services so they can properly verify your claims. That is if you really care about the welfare of these children. If this is just messing around and just joking it is a pretty sick and twisted joke.
294  Bitcoin / Hardware / Re: Future mining powered by Tesla? on: May 02, 2015, 12:56:03 AM
I'm not sure I'm understanding what everyone's raving about.

Is this anything more than an expensive battery in a nice case?

Cheaper per amp hour more likely after the  factory starts being built. Although you wouldn't see savings unless you're a massive farm compared to  grid prices for electricity and you would have to pay more upfront to see savings in 5 to 10 years with solar. Very risky today but soon enough it will be  standard.
295  Bitcoin / Hardware / Re: ANTMINER S2 upgrade kit? EDIT: New info 3/11 on: May 01, 2015, 05:33:38 PM
Please remember, none of these items are pre-order.  Our sales team and the Marketing team will make the announcement when it is ready.  we are just the techs assisting you guys with the need.  

so you're saying you totally overstepped your boundaries 2 months ago while hyping the upgrade to us?

What do you think an upgrade will do? Magically make an S2 profitable? Even 2 months ago it wouldn't have.

I get people want to push Bitmain to follow up on their promises but somehow I just don't see any value in an upgrade now nor 2 moths ago. You pay more to mine how much more?

If it comes let me know the price given the current strategy Bitmain prices for miners are in predatory territory and highly doubt anyone will be happy about the price of an S2 upgrade kit anyhow and then there will be a whole host of people complaining about that if it ever ships. The only reason to put this upgrade out is for Bitmain to turn a profit on the kit. That profit maybe be fair but it certainly doesn't make an S2 profitable to a miner.

What are you really fighting for? Or are you just taking the piss out of Bitmain? If you are ok keep going don't let me stop you.
296  Bitcoin / Mining speculation / Re: Next consumer model miner on: May 01, 2015, 05:24:08 PM
Le bumpage.

Anyone else out there looking to do the next small thing other than Gekko?
297  Bitcoin / Hardware / Re: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs on: May 01, 2015, 04:49:32 PM
Bitcoin's fatal flaw was that it employed a POW algorithm that was ASIC friendly. Its entire history has been described by, and its future predicted by this single fact.

Isn't it time we all moved on ?

Why is that a flaw? Have we encountered any problem because of it?

I think that within 2 years, the only people who will be able to get their hands on hardware to mine will be people who can actually manufacture the hardware themselves in China. I'd call that a developing problem.

2 Years?

Next year.

Okay, if this is the problem, smaller miners should now take care of a solution, right?

Not sure this thread is the right place to discuss small miners right?

Got a few million willing to invest in ASIC chip and then build a machine which you would be willing to sell to an ever shrinking market? That is what you are asking for.

Gekkoscience all you got probably.
298  Alternate cryptocurrencies / Altcoin Discussion / Re: I love altcoins. What's your favorite? The shill thread. on: May 01, 2015, 04:23:45 PM
PayCon?? Really?? Is it another Paycoin copy scam coin? The advertising banner looks not professional at all.

Psst...

C  O  N.

Think JOKE.


Quote
A confidence trick is also known as a con game, a con, a scam, a grift, a hustle, a bunko (or bunco), a swindle, a flimflam, a gaffle or a bamboozle. The intended victims are known as "marks", "suckers", or "gulls" (ie, gullible). When accomplices are employed, they are known as shills.
299  Bitcoin / Hardware / Re: [ANN] Sfards: SF3301 Datasheet Open Source [Updated 30/4/15] on: May 01, 2015, 04:16:27 PM
I am surprised also by the comment about the cost of such a DC2DC gadget. It seems like that, and an adjustable frequency gadget are pretty common these days, on a whole range of mining devices.

Only if you don't know how to design them properly.

Keep your drivel to the bitmain threads!
DC to DC components do have a cost, but the design as a whole can be more efficient (power efficiency and ROI wise) than without.

Let the man speak. It's good to have discussions so that the community at large can get a variety of opinions, then make up their own mind as to what's information and what's drivel. Maybe that way some of the drivel might disappear.

And you're absolutely right about the overall efficiency of a product, very good insight.

See? You've probably to taught a good few readers to think differently about design.

If you ignore Adam then you can just cut to reading what people that are not bent on shilling for another company have to think. Big difference between being openly hostile and slagging the competition and having a vigorous debate about the potential of this chip.

Thanks to those that cut through his bullshit. Just stop quoting him so I don't have to read it.

300  Bitcoin / Hardware / Re: [ANN] Spondoolies-Tech - carrier grade, data center ready mining rigs on: May 01, 2015, 01:25:56 PM
Bitcoin's fatal flaw was that it employed a POW algorithm that was ASIC friendly. Its entire history has been described by, and its future predicted by this single fact.

Isn't it time we all moved on ?

Why is that a flaw? Have we encountered any problem because of it?

I think that within 2 years, the only people who will be able to get their hands on hardware to mine will be people who can actually manufacture the hardware themselves in China. I'd call that a developing problem.

2 Years?

Next year.
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