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1  Bitcoin / Mining / Re: Electricity backup for antminer's on: June 19, 2016, 09:17:49 PM
Hello everyone i just bought two antminer s7's. Where i live, i have to pay very less for electricity. But the problem is the electricity uptime is very poor here, i face 5 to 6 power cuts a day with around 40 minute to 1:30 hours. I want to ask what kind of backup power should i use. i am thinking about getting a 3kva inverter. Please suggest me other options.

Most ASICs(the actual chip that does the work) run on less than 1VDC but very very high current.
Most 'miners' operate on 12VDC.
Most power company power is over 100VAC.

A UPS looses over 10% of the power input to charge the batteries.
It looses at least another 10% when making AC from the stored battery power.

A typical Platinum 12VDC power supply looses ~10% making 12VDC from the wall voltage.

If one were to find the 'best' option, it would probably be to power the miner from 12VDC batteries directly during a utility outage.
If you want your backup to survive more than 1-2 outages you could to plan on having DOUBLE capacity available.

Even with the best available option it may not be a good idea.

YMMV
Smiley
2  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: May 29, 2016, 07:28:15 PM
I hope my/our postings here played some small part in the education of their 16nm investors.

I also hope those Black Hole investors are very very vindictive.


YMMV
Smiley
3  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: April 22, 2016, 01:05:53 PM
One more time ladies,

The controller hardware is the same for everything.
Some controller boards do not have 6 ribbon cable connectors installed though.

For early Oct merc,sat,jup you had to have October firmware loaded.

When November was first launched you needed November specific firmware and it was not backwards compatible.

Eventually they released firmware that worked with both OCT _OR_ Nov (not both on the same controller)

The nepturd firmware can run OCT28nm, Nov28nm, _OR_ nepturd20nm.
You could plug in Nov28nm _AND_ nepturd20nm at the same time but it will run the nepturds slow.
In other words don't ever mix GE and Ericsson DC/DC converters on a single BTC controller.

Same controller hardware for scrypt but different firmware.
I don't think the tit firmware works with any of the BTC ASICs.

YMMV
Smiley
4  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: March 23, 2016, 09:29:09 PM
I was bit surprised when after modyfing cubes per youtube video (anyone did put heatsink on all DC converters?) and applying new thermal paste I managed to get my problematic dies to work at full spead. I had 2 that would run at 125mhz max. now they running at full 300mhz (didnt tried more).
and was shocked how dried up thermal paste was on some cubes:/

btw anyone ever tried to put some water cooling?Smiley

I watercooled both a Jupiter and a Nepturd.

With the Jupiter I fit
FOUR ASIC boards,
TWO controller cards, (so I can run it as 2 Saturns if I want to)
TWO 760Watt PSU,
TWO water pumps,
THREE fans,
and the 360x120x60mm thick radiator
ALL inside a standard Hoopiter case.

You have to click the links below, I only post links.
(to save people bandwidth if they are not interested)
http://imgur.com/GXvNz3g
http://imgur.com/IJzV8fA
http://imgur.com/xoHsaiJ

For the Nepturd...
First pic is during initial construction.
The water loop is running but only two ASICs are watercooled.
The three uninstalled waterblocks are sitting there waiting for assembly.
They are already part of the loop and have water running thru them.
http://imgur.com/r2Qjrig
Three unmodified air cooled ASIC's can be seen here on the shelf above during construction.
I used a tall Thermaltake water resivoir.
I also left an opening in the 220VAC outlet box for small children to stick their fingers in! Smiley
The two 2000 Watt PSU that make my 4000 Watt rail can also be seen here.
https://i.imgur.com/jeIRRcw.jpg
Next pic shows all five ASICs watercooled during initial testing.
http://imgur.com/9T8lRc2
I used two 360x120x90mm thick radiators for one nepturd.
http://imgur.com/5TktL32
I might redo the arrangement of my ASIC PCBs so the water and everything is in the center of the pentagon.
Then I can cool the DC/DC with a smaller fan and make a case with lower cost of materials.
I think I can use 1 fan for both PSU and the DC/DC converters.
I figured out how to easily watercool the DC/DC converters but never got to it.
(2 years later I doubt I will ever get to it)


For both of the designs I used two water pumps in series so I would still have flow even if one pump failed.
I also have a smoke detector that lives right on the miner rack.

A titan uses the same form factor so my mods would also work for it.


YMMV
Smiley
5  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: March 13, 2016, 12:53:04 AM
All very valid reasons and I assumed as much. Thanks for confirming.

I guess you could replace the fan with one that has its own thermal sensor. Ive seen 80mm fans with this so I assume they have larger ones as well to fit the titan. Might not be worth the cost unless youre replacing a bad fan tho.

I suppose. One of the things to watch out for is that you would measure incoming air temp as the KNC titan pushes air through the enclosure. Technically it's always better to PULL a fluid (ie: air) not push it, but once again running full steam is best on a Titan that is still quite worth something.

Meantime I'm wiring another bypass circuit up for someone who torched a cube's power bus.

Been there done that! (the bypass, not a torched power trace)
http://imgur.com/LhXa182

EDIT:
Another good option to land a jumper is right at the filter caps closest to the ASIC.
Another good option to land a jumper is right at the filter caps closest to the DC/DC converter.
The ASIC caps are where you run ~0.7VDC if you bypass the ericsson VRM's.


BTW, I did this long ago just to measure thermal properties of the 12VDC traces.
I did the mod on a brand new PCB, after I ran it once to test functionality.
I also replaced ALL my PCIe power inputs with wires soldered direct to ASIC PCB.
http://imgur.com/3pVt5ae
I assumed I might mess up the via's doing the connector mods and figured out the plan B before implimenting plan A.

I melted a couple consumer PSU modular connectors with my old 28nm stuff.
I use only screw terminals on the PSU side now.
http://imgur.com/uFJ5Off
The exception is, I use a modular connector right at the 2kW PSU, but it is designed for the high current.


I doubt it really matters at the 'gas'  pressures involved but,

For a compressable 'fluid' like atmosphere I personally think it is better to PUSH air to compress it and get more molecules to pass hot area.
*assuming the compression does not raise the air temp too much.
Pulling creates a partial vacuume, partial vacuume's are used in vacuume bottles to reduce heat transfer.
Pushing is also often the easiest way to filter the air @ the fan input.
Clean guts are quieter and work better longer.
I also prefer the lower fan rpm of pushers for lower tone of the noise that does exist.

Anyone can test this for themselves.
Take a fan and place it on a flat surface while running.
Listen to the difference between pushing against the surface and pulling.
Many years among racks of fans has left me with a biased opinion on fan noise.


YMMV
Smiley
6  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: February 29, 2016, 11:59:21 AM
Question for ya all....

My Titan keeps causing my PSU's modular power connectors to eventually melt after like months and months of steady use. I think it may be because of crappy modular cable connectors n connections to the PSU.
The titan side of things - including the Y adapters remain in good shape.

So, Im wondering

Has anyone tried powering their Titans w/ one of these 2000w server PSU's using the breakout boards sold here on the forums to much success? Im just wondering if these breakout boards plus decent PCIe cables would be better for the Titan or not.
Looks like the controller board & pi would both have to still be powered by a seperate ATX psu to supply 5v ... is this ok to do?
Thanks

Not with a Titan but I have used them with nepturds.
I use 2 of them in current sharing mode per nepturd, I have 4kw rails!!!
I'm focused on redundancy and minimum(zero) downtime if there is a PSU failure.
https://i.imgur.com/epKz23R.jpg

I made my own connectors at first, then I got the breakout boards.
http://www.gekkoscience.com/products/IBM2K_board.html
Theese are sold by user "Cablez". 
https://bitcointalk.org/index.php?action=profile;u=54059

Another reason I went with a 4kw rail is I wanted the PSUs to be at 1/2 of rated current for greatest efficiency.
The PSUs are great, can hot plug them if using more than one.
I also picked up some 1800w PSU's for backups. (same connector/breakout board etc.)
The only potential downside is 220VAC is required.
You also need a fan for the PSU, there is a fan connector on the breakout board.
I started with a 'poor mans 220VAC' in a 110VAC house by running extension cord for one of the 110VAC legs.
The gekkoscience.com  breakout boards I bought also solve the 5VDC issue onboard.
He also sells 14AWG PCIe power pigtails to go along with them.
I bought some pigtails too, but never used them, as I soldered my 12AWG power wires directly to the ASIC PCB.
I used only 2 12AWG wires each direction and the wires get slightly warm but never hot.

Mine work well, I never heard of anyone having any issues but I did not look for such posts either.
Delivery was as advertised, no complaints from me!
I bought my PSU's on Ebay but he sells those too and the price is good.
2kw is a lot of juice to be exposed, think it thru.  (12VoltsDC @ 166Amps = 2000 Watts)


YMMV
Smiley
7  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: February 05, 2016, 06:38:44 PM
RE: The "Y" cables.
kfc actually got it right on the 28nm Oct. PC boards.
There was a place on the PCB to install another power connector.
Top left in the pic linked below.
http://www.toboc.com/images/tradeleads/453658_hr.jpg

When kfc discovered they were in over their head understanding how to operate the General Electric DC/DC converters in pairs, and ALSO changed to Ericsson, they removed the option from the PCB to save the cost of a connector, 8 drill holes, and 6 power vias. They abandoned and removed a better solution than the "Y" cables.
On the 28nm product this almost makes sense, on the 20nm product they can't claim ignorance because they themselves used to have a better solution.
They eventually spent on just the shipping for the "Y" cables many times what the PCB solution provided, even if they got the "Y" cables for free.

BTW, kfc had the exact same issues with the Ericsson DC/DC converters, but they needed a scapegoat because of FIRE, and a local manufacturer(Ericsson) was willing to ride in and save the day. The same problen GE and/or Ericsson engineers solved in kfc's firmware could just have easily been applied to the GE part. Recall they announced that they "flew in" a GE engineer when they were in FIRE damage control mode.
And they did make changes in the firmware for existing GE product.

Disclaimer: I have a biased negative opinion of Ericsson that has more to do with assholes in the US distribution chain(Mark Oswald of Ericsson in particular) than I have issues with the quality of the product. Both manufacturers make parts that work equally with kfc's ASICs.

kfc's ignorant DC/DC converter decisions are also connected with their other huge blunder, the 5 cubes instead of 4 idiocy.
If they had added 2 DC/DC converters to each ASIC PCB they could have avoided needing 5 cubes.
They could have at the same time re-added a power connector and split the 12V rail on the PCB in 1/2 IMPROVING SAFETY!!!
The whole issue with some split rail PSU's would have been eliminated.
You can't run 1 die on 2.5 DC/DC converters but you can run 2 die on 5 converters!
They needed 25% more(than planned) rare ASICs to accomplish this.
This is also why I have speculated that 1 delayed delivery ASIC costs way way way less than 8 DC/DC converters.
They must have known they were burning the bridge to their customers at the same time.
Keep in mind, they were also 'customers' and delayed filling their data center and ended up with 20%less hashing power per ASIC also.

They poured sand in the astroglide very early and often.
Frugal to a FAULT. I hope they live long 'interesting' lives and the Black Hole investors take them to the cleaners if possible.


YMMV
Smiley
8  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: February 01, 2016, 02:02:02 PM
Below is my post on lightfoots fixing and moding the Jupiter/Neptune/Titan thread (link below)


here is my 'sacrifice of a titan clone board'  idea....." likely to be shot down by lightfoot (and pics of KNC Oct Jupiter 550gh 4 port Beagle Bone Black Card) that I propose to attempt to mod
to a Titan 4 port board ..using the 'cloned titan bridge (1 of 10) sold on here recently.....for those interested below is the link

have a cube that I really NOW have to play with a Titan Cube and repaste/add fan/do the cut down main heatsink and small heatsink mods) that is slowly dying
2 dies slip sliding into oblivion...a tweak at a time every 2 weeks or so...currently at 200 and 250 ....

so hell may as well 'wreck' as much stuff as possible before these Titan's turn into doorstops......Fast an Furious ASIC version lol ) Smiley

here is the link to the pics/info and hopefully lightfoot will reply..those with the same old KNC OCT Jupiter/Saturn/Mercury 4 or 6 port boards you may still
have laying about..may want to see if anything like this is 'possible' or 'could work'

https://bitcointalk.org/index.php?topic=1283859.msg13740028#msg13740028


my own view (and some others here) is that KNC went as 'cheap ass as possible" and that ANY 4/6 port board from the 1st knc 2013 board to the last
WILL WORK with the cloned Titan or other Titan Bridges...in fact .my view further is (no proof..just guessing) is that you could get the proper 1 pin raspberry pi
sized pin cables (as others on here more tech savvy then me have proposed) and not need a titan clone bridge daughter board AT ALL just spaghetti the works
...if someone was to just map such out on both boards...again guessing ..but hey look at the firmware shortcuts they took with that and Glen Tarkin's major improvements
...it just plain imho could be that simple (or I could see a cloned titan bridge melt ...like the wicked witch of the east.....)

anyway enjoy...this ugly duckling will either become a Swan or Roast Duck imho Smiley

As a side note.how many folk have old Jupiter/Saturn/Mercury/Neptune boards on hand that they could use in this manner (assuming do'able ..big assumption)








You can buy replacement heatsink holddown parts directly from coolermaster.
The screw sizes may be different(a tight fit thru the holes in ASIC PCB) but new smaller screws are inexpensive.
I drilled the holes larger.
IF YOU DRILL, RUN A VACUUME CLEANER(ASIC side) WHILE DRILLING!!!

If it fits an Intel 1155 socket heatsink pattern it will fit.
It uses a 75mm x 75mm square hole pattern.
Other PC heatsink manufacturers have similar replacement items.
There are also many flavors of waterblock mounting hardware that could be pressed into service.
The hole pattern is an industry standard.

This way you could save the original plate in case you change your mind.

If you look on this page you can see the parts in question. (4th pic down)
They sell seperately a kit that has most of the hardware in the pic.
http://www.amazon.com/Cooler-Master-Hyper-212-RR-212E-20PK-R2/dp/B005O65JXI

----------

If the 'bridgeboard' is only made with traces and connectors(no extra parts on the PCB),
then you can construct a ratsnest with the following.
http://www.amazon.com/gp/product/B00BQA5BWU?psc=1&redirect=true&ref_=oh_aui_detailpage_o01_s00
(the linked product is overkill but the price is right and the extra flavors are handy)


Smiley
YMMV
9  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: January 12, 2016, 10:10:03 PM
Anyone know if the Jupiter controller will work with the Neptune? Are the data cables also the same ?

Yes, they work fine if you load the correct firmware.

The controller never changed between Oct and Nov hoopiter.

For future reference, Searing has no clue, he just likes to hear himself talk and get his advertisement/sig more posts.
I would also point out that he easily could have a clue.
He has been given answers to most of the current questions but he is too busy talking to listen.

YMMV
Smiley


well I'm not gonna slam you for helping me...but has anyone tried this with an OCT jupiter/saturn/mercury ..they do not work with a NOV Jupiter cubes etc (mix/match)

that is my question as well...I have an OCT Jupiter Board...but to be safe ..someone should at least TRY this first with an LCD and the GUI with NO cubes and see
on ideally 1st a Neptune board in question..then next likely is the NOV jupiter board (last run) then perhaps my OCT Jupiter or others like saturn/mercury boards?

if it kinda works before tossing a Titan cube to sacrifice to the ASIC gods .....with this OCT Jupiter board

I agree it SHOULD work....at least as a test with the LCD and the GUI with no cubes to start...but again ideal would be with a neptune controller 1st imho

THAT is the main issue...i have a clone bridge coming..got it as a spare (miners are 14.5 months old orig titan warranty was 90 days sooooooo seemed prudent
with 2 titans and the 'possiblity' that is the missing piece to the controller problem ..a complete clone hardware work about

supposedly have the proper pi (nov 2014) as a spare also ...according to knc tech staff at that time (assuming they know zip) raspberry pi B+ 512mb model


just trying to help ....don't like the way i say or do such ...big whoop....at least I'm trying to ask some questions on this (ie will clone bridge work on neptune 6 port board?)

anyway thanks for the confirmation ..I will take it as help from you....no issues...BUT some confirmation of HAS SOMEONE ACTUALLY DONE THIS YET would be nice

If so I will gladly try to be the crazy 2nd guy to do so...even on my Oct Jupiter board....(the bridge clone is in the mail)

anyway thanks for the input ..if you have further info as to who has done this already shoot it out here as well for all of us....



Disclaimer: I don't claim a Titan controller will work with a Mercury,Saturn,Jupiter, or Neptune or vice-versa.

I do state as fact from my own eyes that Merc,Sat,Hoop,Nepturd controllers are ALL the same hardware.
The only 'functional' difference between Oct&Nov 28nm ASICs was the change to Ericsson DC/DC converters.
The same controller works equally on either.
You MUST have correct firmware on the controller to handle this change on the ASIC PCB.
Oct. firmware will not work with Nov. ASICs but Nov. firmware _IS_ backwards compatable with the Oct. ASICs.
This is documented in the code kfc publicly posted.
They provide everything but the source code for the FPGA, but they do provide a working compiled image.
I never tested it but I recall from browsing the code that a Nepturd controller prolly works fine with either OCT or Nov 28nm ASICs also.
I also seem to recall posts saying it was an all or nothing proposition.

I run some nepturd cubes with an Oct Saturn controller HW reflashed with newest firmware.

The whole point of putting an FPGA on a controller between a PC(Pi or BBB) and the ASIC is that it _IS_  a "Field Programmable Gate Array".
There is no reason to think kfc would abandon one of the few good design choices they made.

Since you have both BTC and Titan controllers why not simply look at the forkin part number printed on the PCB?
Even if it is a different part # it has the same FPGA mounted on it.
Look for numbers etched in the copper specifically, new paint does not a new circuitboard make.

Occham's Razor says kfc is too cheap to have made any changes to a working PCB design.
I'd further speculate that they created the bridge board to AVOID having to change the controller in any way.


YMMV
Smiley
10  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: January 11, 2016, 07:52:49 PM
Anyone know if the Jupiter controller will work with the Neptune? Are the data cables also the same ?

Yes, they work fine if you load the correct firmware.

The controller never changed between Oct and Nov hoopiter.

For future reference, Searing has no clue, he just likes to hear himself talk and get his advertisement/sig more posts.
I would also point out that he easily could have a clue.
He has been given answers to most of the current questions but he is too busy talking to listen.

YMMV
Smiley
11  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: December 08, 2015, 09:16:48 PM
Very interesting post tolip. I appreciate the link for the JTAG and mentions of neppy boards as I haven't had a jupiter or neptune to confirm.

Would be nice to make those bridges cheaper, my new batch will be ready this weekend (for those that don't want to make their own). Also note, the bridge boards aren't just rewiring pins. There's a voltage regulator on there, hence the burning out of some boards, that will also have to be taken into account if you want to make your own (you can use a Harwin M20-7872042 and a Farnell 1256663 for the connectors to fit with the Pi).

I'm not too sure about having control over that cyclone though.

I was suggesting above that if you run power to the Pi thru the original Pi power connector you can use the voltage regulator that is already installed on every Pi.
If there is ONLY a voltage regulator on the bridge  and not also a voltage level shifting logic part that might explain why they are going kaput before their time. In that case I'd suggest adding a part to deliver the proper voltage level logic(as if it were a BBB) the controller is designed for.
It's still just a bandaid and using a BBB is cheaper than 0.5BTC for a new bridge board.
(this assumes that someone ports the software)
I posted a few times in the OC thread instructions for setting up a BBB to compile software.
Has anyone asked kfc if they have a BBB flavor of tit FW???

If one must throw BTC at something I'd suggest asking Luke-jr what he'd charge to port the kfc Pi 'utility' code to the BBB.
He is/was quite fluent in the details of what goes where on the Pi and BBB.
(just an idea if there is no willing tit programming talent in this thread)

I think in one of your posts you mentioned burnt traces on the bridge boards.
This kinda does not make sense, I could see killing Pi's happening or killing a part on the bridge but not burning copper.
There should not be enough current between a Pi and a controller to smoke PCB traces.
A Pi runs fine powered by a typical USB port, this means less than 0.5A @ 5VDC, equates to 2.5 watts or less, mentioned already by others.
The Cyclone IV on the controller gets it's power from the 65217A power chip also on the controller.
The FPGA depends on the 65217A being set up correctly before it will operate.
Thusly, troubleshooting a controller should start by verifying power.
I'd guess that some large portion of dead controller boards are just blown 65217.
It is an easier part to repair than the BGA Cyclone.
Definately the 65217 is doable with US$50 hobbyist reflow tools and they are under US$10 each qty1.

I'm not trying to ruin your fun, rerolling the bridge PCB artwork sounds like fun if it's for something that interests you.
But it doesen't sound IMneverHO like the ideal cost effective long term solution for the wider audience of tit users.

You might try one of theese instead...
https://www.adafruit.com/products/2426
or
https://www.adafruit.com/products/2427
They are already 5V tolerant but may not lead to correct IO pins.
It's a common enough challenge for solutions to have already been found and commoditised specifically for the Pi.
Why re-invent the wheel?

If you like to solder start here...
https://www.adafruit.com/products/801
and add your favorite 5V to 3.3V buffer chip.

As usual,
YMMV
Smiley
12  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: December 08, 2015, 07:54:50 AM
@ Searing, not a dumb question.


This is probably a dumb question but I have not seen it addressed anyplace..

I don't suppose the bridge connector used on a mercury/saturn/jupiter/neptune board could be used as a bridge or at least modified as such?

again unlikely but just for clarity I figured I'd toss it out here..probably not one being a BBB to port board and other being PI to port board

and a 2nd newbie question...

I have read that the boards are the same between the say the previous BTC KNC boards *jupiter/neptune* etc ....but if that is true is it only
for the NOV such boards? and by the same I mean PHYSICALLY  the same. I realize the FPGA chip I think it is has not be reverse engineered
thus no clone Titan Controllers

anyway just catching up on the stuff here beyond my expertise (which is much) Smiley

There is no 'bridge' board between a BBB and a kfc controller.
The BBB plugs directly into the BBB compatable connector on the controller.
The controller boards are the same for all the BTC products from kfc.
I use Oct. Saturn controllers on nepturds. No difference WITH the correct firmware.
Educated guess says this 'bridge' board you guys are referring to is just lining up the power and SPI pins of the R Pi to the pinouts of the BBB connector that is on the controller PCB. SPI is P1 pins 5&6 on a Pi and P9 19&20 on a BBB.
There is probably also a voltage regulator involved. And should be but probbly missing if they tried it and it worked logic level shifting circuitry.

The main difference between them(hoopiter vs. nepturd) is the program(spimux.rbf) that is loaded into the FPGA by the firmware.

The primary function of the FPGA is to take the multiplexed SPI signals from a Pi or BBB and de-multiplex it to correct seperate physical cube serial interfaces.
The software on the Pi or BBB sends all external cube communication over a single 'data' wire to the FPGA.
(there is also a clock wire, SPI is a "2 wire interface")
Between the controller and the cube it is still serial just de-multiplexed.
The ASICs themselves further demux because there are more cores addressable than a single SPI channel supports.
Iffin I recollect correctly the serial to and from the ASIC cores is unidirectional requiring a wire  for each direction.
External to the FPGA are at least 12 seperate serial interfaces, 6(or12) for ASIC and 6 for DC/DC converters.
There might be 6 more for the LM75 not sure if it shares wire w/ VRM's.

The filename "spimux.rbf" tells us almost all we need to know if we recognise the jargon.
SPI=Serial Perephial Interface (a common industry interface)
mux=multiplexer
.rbf=compressed 'encrypted' proprietary Altera file format used to keep prying eyes like ours ignorant.

IMneverHO reverse engineering the FPGA even from decripted 'rbf' code would take an expert to understand.
Additionally the Cyclone IV can be turned into a CPU for clock request filtering purposes.
If kfc purchased the code to do this they "can't" release all the FPGA source because it is not theirs.
Another thing to keep in mind re: the FPGA.
The original FPGA sha256 code is the only diamond in the pile of shit that kfc has become.
The one and only technical competence (other than fleecing customers for NRE $) is their FPGA expertise.
 
Both the Pi and the BBB have an industry standard SPI interface.
If you bought something like this...
http://www.amazon.com/gp/product/B00BQA5BWU?psc=1&redirect=true&ref_=oh_aui_search_detailpage
You could make your own 'bridge' board for about US$8.00.
If you wanted to get real fancy add one of theese...
http://www.adafruit.com/products/2711
Way less than the 0.5BTC I have seen mentioned.

You will need 2 or more power and ground wires, 2 SPI wires, and prolly some few others for LEDs etc.
I think you could run the power wires to the original Pi POWER connector and won't need a voltage regulator on the 'bridge' setup.
The Pi and the BBB do run on different voltages, it is one notable difference.
Ohm out each pin on the 'bridge' board and make a map for wiring.

You could probbably use a BBB instead of a Pi or a Pi instead of a BBB.
You would just have to adjust the SPI port setup in the firmware for any HW differences.
The various port pinouts of the Pi and BBB are easily findable.
https://www.google.com/search?q=Pi+SPI+pinout&ie=utf-8&oe=utf-8
https://www.google.com/webhp?hl=en#hl=en&q=BBB+SPI+pinout
The kfc source code for the SPI port setup on the BBB is online too.
I'm positive the only reason for the BBB to Pi change was for kfc to squeeze another US$10 out of each unit.

IMneverHO it would be easiest to port the Pi firmware to the BBB and forget about the voltage differences instead of 0.5BTC bandaid that still uses the Pi on a board designed for a BBB, FWIW. It might be as easy as changing the Pi header files with BBB header files and recompiling the utilities.

For those still on the quest for clocks, you might try using the 'raw' request type. 
If it can be done with non FPGA software that is a potential vector.
I have no idea about on the 'tit' but, someone might try using an spimux.rbf from a hoopiter or a nepturd. Wink
Don't forget you need to also set serial interface speeds in conf file if you try the hoopiter flavor.

If you want to spy on the communications between the controller and the cube it is simple also.
Purchace one of theese...
http://www.amazon.com/gp/product/B00BUH3R48?psc=1&redirect=true&ref_=oh_aui_search_detailpage
and attach it to one of your ribbon cables, pay attention to the pin #1 markings! (a little triangle molded into the part)
and one of theese...
http://dangerousprototypes.com/docs/Open_Bench_Logic_Sniffer

The logic sniffer is just an FPGA(cheaper/less capable than a Cyclone IV) doing almost exactly what the 'controller' board does BTW.
There already exist Cyclone IV development kits that could with the addition of any PC(or Pi, or BBB, etc,etc) replace the kfc controller board.
Could prolly even load and run the kfc "spimux.rbf" file.
https://www.google.com/search?q=EP4CGX22CF19C7N+development+board&ie=utf-8&oe=utf-8

If you also installed a header into JP6 (the FPGA JTAG port) you can verify if the FPGA 'thinks' it's functional.
The logic sniffer above can do that too.
If all you wanted was JTAG info from the FPGA (to test FPGA functionality whilst troubleshooting controller boards)
one of theese...
http://dangerousprototypes.com/docs/Bus_Pirate
or one of theese
http://www.ebay.com/itm/ALTERA-ByteBlaster-II-ALTERA-USB-Blaster-CPLD-FPGA-ALTERA-Download-Cable-JTAG-/271138629988
might be a better choice.

Last but not least, pay close attention so you witness when the smoke comes out!
Smiley

13  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: September 14, 2015, 09:38:39 PM
not at all Grin Thank You!

So, theres 1 caveat to allowing access to bfgminer from other network devices. This is easy to do for read only commands but privileged commands would be denied. I dont see anywhere in bfgminer documentation that allows easy full access to the local network.
As far as monitoring goes, would the read only be fine?

Yes read only is all I would asking for Id like to be able to monitor my remote rigs via the VPN without using the webpages Any changes to pool etc id login to the miner web interface and do it manually

bfgminer does what you seek, details in the REAME.RPC file that comes with bfgminer source.

a combination of
--api-allow
and if needed
--api-groups

The "W" group for read/write and "R" group for read only.
Iffin I recollect correctly you can even have a "P" group with selective write access.

I posted somewhere(probably the OC thread) some awk code to gather neat data from a hoopiter remotely.
Same awk code runs local(miner) or remote(PC somewhere on net), I think the pi has awk most *nix systems do.
It can easily be twisted to display whatever is available.
It already has many of the possible responses coded in, just commented out.


YMMV
tolip

EDIT
And "miner.php" is an excellent way to monitor from a PC once access is allowed on the device.

Yeah, i dont think it needs to be that complex if.... and you may know this....
Will --api-network work in conjunction with --api-allow?
The readme says its "overrides" if both are present, but that doesnt mean --api-network goes "ignored" right?

e.g. --api-allow W:192.168.0.1    <- this will allow a specific host
e.g. --api-allow W:192.168.0/24  <- this will allow whole subnet
e.g. --api-allow W:192.168.0.1,10.0.0/24 <- this will allow 1 specific host and whole 10.0.0.0 class C subnet

Not sure but might need 127.0.0.1 if ya want to query the API from the ssh session if you use --api-allow.
It's been a while and my 28nm stuff is 'sleepin' else I'd check.

YMMV
tolip
14  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: September 14, 2015, 06:06:43 PM
not at all Grin Thank You!

So, theres 1 caveat to allowing access to bfgminer from other network devices. This is easy to do for read only commands but privileged commands would be denied. I dont see anywhere in bfgminer documentation that allows easy full access to the local network.
As far as monitoring goes, would the read only be fine?

Yes read only is all I would asking for Id like to be able to monitor my remote rigs via the VPN without using the webpages Any changes to pool etc id login to the miner web interface and do it manually

bfgminer does what you seek, details in the REAME.RPC file that comes with bfgminer source.

a combination of
--api-allow
and if needed
--api-groups

The "W" group for read/write and "R" group for read only.
Iffin I recollect correctly you can even have a "P" group with selective write access.

I posted somewhere(probably the OC thread) some awk code to gather neat data from a hoopiter remotely.
Same awk code runs local(miner) or remote(PC somewhere on net), I think the pi has awk most *nix systems do.
It can easily be twisted to display whatever is available.
It already has many of the possible responses coded in, just commented out.


YMMV
tolip

EDIT
And "miner.php" is an excellent way to monitor from a PC once access is allowed on the device.
15  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: April 14, 2015, 05:56:02 PM
Oh god, do they just stop working even after all the firmware updates ?   who else experience this ?   can't believe they sent alpha state miners for 10,000$

Careful, you'll invoke that twat notthematrix to start posting his sermon about how everybody who complains about KnC is an idiot who isn't deserving of KnC's love and how he took a gamble and won while everybody who didn't win is an asshole who took a gamble and lost so, you know, stfu dumb bitches . . .etc. etc.



+1
+2
with apologies to twats.

He is a kfc newb here (as per posting history) and obviously has an agenda.
16  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: April 11, 2015, 04:32:45 PM
What does it mean ? why i have a cube without clock? Does it have effect on mining? can i correct it?

Thank you

Disclaimer: I have nep not a tit.
I doubt they reinvented their shitty PCB for the tit though.

It might mean that cube has no 12VDC power.

If you unplug all the 12VDC and turn on the controller with the ribbon cables installed you may see just temp.
On a nep you WILL see the "ASIC" temp.
17  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: April 01, 2015, 06:06:59 AM

Well, I'm getting answers all over the place. Sad  This is bonus, so no LCD.  Yes, get GUI and can ssh.  With or without cubes, same response.  I hope its not the controller board.  That may prove hard to replace.

The difference is I advocate correctly isolating the problem before throwing money at it if possible.

Based on your response I'd put the BBB last on the list of suspects.

It sounds like you already did all this but lets review.
Unplug everything and start with the simplest possible, just the controller.
Add one cube retest, try a different cube same ribbon cable.
Only change one thing at a time and see if anything works.

Test with the last known locally working version of firmware.
I'd completely unplug the whole controller from everything and let it sit unpowered for a many minutes. I had one I thought I killed. I replaced it with a spare Hoopiter controller. After few reflashes the original came back to life.
This may have been because I had everything unplugged in between flashes and whatever caused the 'lock up' cleared.
(some residual capacitance somewhere in the PCB design that affects the FPGA or the power chip on controller)
The reflashing I did may not have been necessary, the process may just have provided the long enough power down for it to clear.
My priority was getting it back in service so I never properly isolated root cause.

Another thing you can test for.
Take a single cube, unplug the cube power but connect the ribbon.
Turn on the controller and see if the temp on the ASIC shows up on the web page.
The temp chip on the cube is powered by the controller over the ribbon.
If this works the controller is prolly OK, as it tests controller power chip and FPGA operation.
This might/could point to a wierd 12VDC issue on a cube interfering with controller communication.

If/when you think throwing money at it is a good idea...
You might find a used Merc, Sat, or Jup controller with a BBB for what a new BBB would cost.
Those old knc specific BBB lack some connectors and might not be valued as highly seperately FWIW.

YMMV
Smiley
18  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: April 01, 2015, 02:43:49 AM
lol, I just had an ASIC fire.

Not sure if it is a cap or a VRM that let go but it was bright and sparky and it stinks.

Symptoms were, PSUs shut down.
I cycled power on the PSUs and that's when the sparks flew.
(same as what others have reported)

I have spare caps but the VRMs are unobtainium.
Anyone with an old dead 28nm PCB with Ericsson VRM's they wanna give me?
I might can change the parts but the VRM's are unavailable in qty. 1.

I won't insult the kfc RMA dept., I modded and have no warranty...

On the plus side the protection on the IBM server PSUs works great, my 4kW rail idea was not the end of my house!
I'll provide more detail (pics) later, I just turned it off and left the room for now.

YMMV
Smiley
19  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: April 01, 2015, 02:07:14 AM
HELP!

After a solid week of mining, my Neptune controller won't recognize my cubes.  I have to be missing something simple because I now have 2 controllers like that.  I've used recovery SD to RC6, updated to 1.00, 1.02, 1.05, 1.06s and none will see the cubes.

Instead of white flash that's about a second, I now get a short white flash 3x spaced out over probably 15 seconds.  No green led Sad

I'm sure this must be common, so what am I missing?

PS: All ribbons are firmly attached.  Red strip towards corner of cube and groove in controller.  I've tried just one cube and still nothing.

If by "won't recognize my cubes" you mean you can view miner webpages and controller but it will not detect ASIC cubes, I doubt it is a BBB issue.

No web page or ssh connection to miner, suspect BBB.
If you can connect to controller but it will not see cubes, suspect FPGA on controller board.
Have you tried the controller with no cubes connected?

While troubleshooting remove the LCD and try without it.

YMMC
Smiley
20  Alternate cryptocurrencies / Mining (Altcoins) / Re: Swedish ASIC miner company kncminer.com on: March 16, 2015, 12:01:22 AM
I went for the bonus Neptune.
Sometimes you win sometimes you lose , you better grow up and accept it.
instead of putting energy in sweets you can not get.


I have been looking for a single satisfied knc CA batch nep customer.

Woot, the first one has been identified!!!
 
Did you purchase a CA batch nep directly from knc???
(from ebay is not the same thing)

If and only if you answer yes to above...
The ratio is now 999:1 (if we assume a CA batch of only 1000)
Start the parade!


YMMV
Smiley
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