Topic: ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH - page 213. (Read 528055 times)

NICE!   I almost wish my batch was delayed a week and get a months worth of hashing out of the deal!

Anyone excited about the Spondoolies s50?

All of my experience is with Antminers, so not really. What is it about the s50 that has you excited?

Patience.

oh yeah i remember rates were crazy stupid...in a few small days i mined as much as a month or more...

Ditto on that one. Someone that makes $240k/year and capitalizes OH MY GOSH because of $700, in my opinion is what we call "a cheap bastard".

How many people feel the need to post their annual salary on a bitcoin enthusiasts' message board? Something to prove, maybe? DMWard is one of the more chill guys I've dealt with on here. Have you considered trying Kegel exercises? I hear it helps with stress.

My father uses this:
http://www.digital-loggers.com/220.html

And I use the smaller "home" version to power cycle a couple servers I have. They become pretty powerful due to their scripting capabilities.

Then why the hell could you not give your opinion on how to do it more affordably in a way that does not mock someone for the feature they seek to have?  No, you decided to put a "laughing" face in the forum to mock me with no advice given at all of a cheaper way to do it.

Instead, you decide to be an asshole on top of that with these stupid ass short video comments.  Why such an arss?

Also, you are talking about getting some kind of circuit board or some shit and add $30 in parts onto that?  How much for the Arduino to go along with the $30 worth of parts?  What else is involved with connecting it to the PDU?  I also prefer to control only the PSU I want to control that is connected to the PDU.

So now that batch 6 is sold...what can you even buy, from anywhere ? 

Theres pretty much no new consumer miners available now.

nov 23-dec 3  i think...?

anyone remember when they said they will ship batch 4-5 ?

Was great on the nicehash side. I had just fired up a bunch of s3's at nicehash and a few hours later the payout went stupid high.

It was first dropped when they did the S5 which was the first mainstream Miner from Bitmain that used "String Power" (First trialled in the S3++) The "Benefit" is that the DC Converter Modules are done away with which reduces cost and improves efficiency. Also you can adjust the supply voltage as bbOOmm has just described for over & undervolting. 

Rich

I'm guessing there was a converter in the other models? I wonder why they dropped it in the S7.

ALSO TO NOTE WITH THE S7 ....

There is no DC to DC conversion in the S7's. So what voltage your "feed" your S7's directly correlates to the chip voltage and hashing power.

SO, ~~AFTER~~ your Bitmain warentee expires and you want to experiment. Keep this voltage adjustment knowledge handy.... over clocking with the ease of overvolting just might lead to some interesting results. ( Either poof to the MOOOON hashing ... or POOF, you let the magic smoke out of it )

Do not attempt if you are not familiar or comfortable working around high voltage. Touching the wrong area can result in shock, burns and even death!!! USE ESD PROTECTION when the device is not powered up, but NOT when the device is powered up.


All power supplies are built differently, some have "fixed" voltage regulation, some have a slightly variable voltage regulation. The DPS-1200FB is one that is slightly variable.

Unplug the power supply and clip into your ESD protection.
Remove the 4 screws that hold the cover on.
Tilt back the cover, wiggle and pull down to remove, you will see the tabs are T shaped and hook into the slot.
When the cover is off, fold back the fishpaper insulation.
The now exposed side board will show 3 very small potentiometers (silver in color near the top edge of the board)
The voltage regulation potentiometer is the far right one, that is the one you need to tweak, but first you need to power it up under load.

Once you see where and what you need to do, unclip from your ESD protection and plug in the power supply ( in my case I used 240VAC )

NOTE --- The power supply is HOT now ... DO NOT START TOUCHING CIRCUIT BOARDS WITH YOUR FINGERS OR TOOLS... HIGH VOLTAGE IS PRESENT!!!

If you do not have a resistive load that can handle continuous duty, use a miner as the load. I'd recommend at minimum, a 50% load of the power supplies maximum rated output.

Once your load has stabilized ( miner up and hashing ),take your DMM test probes and stick them into the back side (wire side) of one of the molex connectors, One row of 3 pins is positive, one row of 3 pins is negative. Now take a micro screwdriver - I prefer a non-conductive / non-inductive screwdriver, but if you don't have one, a cheap ass dollar store flat blade eye glasses screw driver will work. BE VERY CAREFUL, THERE ARE SMT COMPONENTS IN VERY CLOSE PROXIMITY TO THE POTENTIOMETER. IF THE BLASE SLIPS OFF THE POT, YOU COULD SHORT OUT AGAINST ONE OF THE COMPONENTS NEAR BY. Take the screwdriver and rotate the far right potentiometer very slowly while watching your DMM. Adjust till it reads 12.25V. Stop, remove the screwdriver, and let it sit for a minute while watching the DMM voltage reading. If its looking good, as in where you want the voltage to be, unplug the power supply from the wall outlet, clip back into your ESD protection and re-assemble. BE SURE TO GET THE FISHPAPER ~~UNDER~~ THE CENTER SCREW TAB AND THAT IT REMAINS THERE WHILE YOU CLOSE THE LID.

Once it is fully assembled, power it up again, test the output under load with the load miner to ensure it is functioning properly.

It is then ready for use.

Make a label, a sticker, or write on the cover the voltage at what % load you calibrated at.

I should also note - DO NOT USE AN OVERCLOCKING SETTING ON THE MINER WHEN CALIBRATING. I noticed that when I used an S5 as a load and the miner was overclocked, the miner was far more sensitive to the voltage fluctuation of adjusting and would stop mining, giving you an UNLOADED DMM voltage reading.

RING A DING DING! Rich nailed it.... that is exactly where I learned to do this, I just could not remember where it was that I seen the pics.

The Isolation tips are also of good interest, especially when you are using multiple power supplies per miner. I did the simple isolation, disconnecting the ground lug ( and stuck heat shrink insulation over the lug )