Can another pool attack a FPPS pool by simulating high fees by paying themselves high fee txs? Or does the FPPS pool software algo know that those attacking fees are not to be counted?

My understanding is a FPPS pool uses last 24 hour timeframe of total network fees to calculate their fee payouts, why can't a large pool fake their fees to trick the FPPS pool into overpaying what they are actually expected to receive themselves for block rewards.

Sup y'all.

Wondering if I can run my antminers off of higher input frequency, I have a genset and am thinking of overspeeding it to get more HP. E.g. instead of running it at 1800 rpm, how about 2400 rpm and boost it to 80 hz?

Can the AP3W++ handle that? Will I blow anything up?

Hey guys,

I understand the 277V L-N voltage is too high for most (all?) PSU's, what is the best way to use this power source for mining? Must I go with a step-down transformer?

THX

Hey guys,

Curious I was talking to a genset vendor today and he mentioned running "server-like" equipment (Antminers) off of a genset may potentially have issues with harmonics and require harmonic conditioning to protect the alternator.

Should I be concerned about this?

I am running Antminers off a genset and I have a surge protector installed on the panelboard to protect the Antminers and PSU's in case of a surge. I am wondering if surge protection is really needed? Maybe the APW3++ PSU's have adequate protection in place in case of a surge?

Being a genset, I'm not sure what kind of scenarios may require a surge protector, lightning? Maybe if half the mining load drops and there's a voltage spike?

https://imgur.com/eejULPG

Hey peeps, can anybody identify what kind of PDUs are used in this farm?

Also, I'm buying 30 AMP pdu's for my farm, link below. I've calculated I can only run 3x antminer S9's on this (230V input power), if I try to run 4 I think i'll trip the internal PDU breaker (set at 24 amps). Am I right? I'd like to get 4 Antminers / PDU if possible, any ideas based on my 230V input?

Link to the PDU's i'm specing: https://www.cyberpowersystems.com/product/pdu/pdu30bhvt8r/

Hey yall,

Wondering if anyone has any recommendations and links to a PDU product that is switched (I can control it remotely) and can handle multiple S9's (the more the merrier).

Cheers

I have a bunch of Antminer S9's and I notice they do not start up when cold. Like even 5 degC can be too cold. From what I observed, when I heat the PSU (AP3W++) first, it starts fine. So it seems it's more so a PSU problem than Antminer problem.

Curious - How do the Avalons start in the cold?

Should I be looking at different PSU's for my Antminers than the APW3++?

My application is a remote mine, it shuts down temporarily once in a while, so I need a way to start the miners reliably.

Hey friends,

I'm looking for options on PDU's that are switched (I can log in remotely and turn on/off the contacts) for Antminer S9's. The more miners I can fit on one PDU the better (for example, I can fit 9x S9's on my shelf, so one  PDU / shelf is ideal).

Any idea's / options for choice? I'm looking at Tripp Lite's website but am curious if you guys have experience and can direct me somewhere else.

Cheers

I've only used them to run them and test them. They were supposed to go to my farm, but I ordered two too many as my farm is now maxed out. PM me or just post here if interested.

Hey guys, I know this is a question most big miners probably won't answer, but any insight is appreciated.

I would like to know what the ratio of Investment / kW capacity an industrial mine may cost. Just a general range would suffice. For example if a 2 MW mine cost $1,000,000 to construct, that ratio is 500 $/kW.

I know there's many facets to this, but am just trying to gauge what if my planned mine is readonable. It is about 600 $/kW.

Thanks

Lets say I have 20 or so S9's on a rack, and the internals have collected condensation due to sitting idle in a cool, humid environment.

Don't worry about why... 

What is the easiest way I can rig up each S9 such that the fans start up prior to actually starting the controller and boards? Could I add some kind of relay or something?

I have a situation where there's nothing I can do to prevent condensation on the internals, as the miners will periodically shut down and they are located in a humid environment. If I can just first power the fans for a bit (before the miner itself fire up), I'm thinking the airflow will dry up the internals pretty quick and avoid a possible short-circuit. Using an external controller, I can then switch on the circuits to start up the miners once they are dry.

Any idea's?

For those, like me, who want to mine on an even playing field and want to see the covertASICBOOST network attack killed, this pool will support BIP 148 UASF.

I hope Slush et al will wake up and offer their users the choice to miner on BIP 148 or legacy chain.

-Vent

I'm curious to see what my fellow miners are thinking regarding the movement for BIP 148, or if they even know what it's all about.

Question says it all. I'm curious to see what the mining community here thinks about this whole issue.

I'm curious as to how one could go about raising capital for equity in a company through a bitcoin crowdsale. Seems like Counterparty is an option? Any help is appreciated.

Ok, so here's the deal:

I'm mining with a cellular internet connection, so data is expensive. I understand I can set up a proxy and aim my miners through the proxy to the mining pool (in my case Slushpool), thereby minimizing the share request and minimizing bandwidth. Hopefully I'm on point so far? I'm so far out of my skillset here...

Anyways, I want to host other peoples equipment one day as I have access to relatively cheap power, but I can only do so if I can aim their equipment through a proxy / do something to minimize my bandwidth use. Currently, on Slushpool, if I set my Antminer S9 to the minimum difficulty, I consume about 14 mB / day and if I set it to max diff, I consume about 4 mB/day. This is still too much if I want to host mining equipment, not to mention I will not be able to control what pool the hosted equipment is aimed at, and what difficulty setting they've set their Worker.

First - Considering what I want to do, is it possible to aim hosted equipment through a proxy (let's assume Antminer S9's are the hosted equipment)?
Second - Can anyone point me to any resources on how to solve this problem / set up proxy?

Any help / tips at all is appreciated.

Cheers

Edit - darn, I should of put this in Mining Support, sorry.

Hey peeps, I did do a quick search and sort of already know the answer, but since I'm making a sizable investment in a farm I just want to ask it directly:

Is 208VAC good enough to run the Bitmain APW3+ PSU? I know the literature says anything >205V is good to start it, but since it's so tight I want to triple check before I wire it up based on this design.

Also, bonus points: Is 208VAC good enough for most PSUs, in case I end up looking for different options other than the APW3+?

Thanks guys, sort of embarrassed to ask this.
Cheers

I don't want to jump the gun, I would certainly like to see Jihan / Bitmain comment, but this covert ASICBOOST fiasco has made me completely distrust Bitmain and it's entire brand.

Hey, millionaires around here(and I'm sure there's many) - maybe get together and build some industrial ASIC's for us little guys who want a fair chance? I'll pay a premium, anything to avoid these criminals

I've been r/bitcoin and twitter lately and I've been seeing a lot talk of support for a PoW algorithm change in case of a malicious attack after a hard fork. This talk scares the shit out of me, considering my mining equipment would basically become paperweights, and  personally I consider this talk more toxic than even the threats by BU supporters like Jihan about attacking the minority chain.

Am I the only one who thinks a PoW change would destroy bitcoin as we know it? Why would anyone mine and trust the new chain, when at any time the developers might decide to change the algorithm and brick our ASICs? I'll be the only one mining on the old chain if I have to.

I don't even understand the fear. An attacker could not sustain a lengthy attack, they would fizzle out quickly because who can afford that kind of energy cost!? Fuck, it is improbable as it is implausible. Anyone supporting such a change doesn't appreciate how the miners, through their energy consumption, support the bitcoin price in the first place. We make bitcoin stable.

Short sighted, ignorant talk supported by cowards.