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Showing 20 of 269 results by jdape
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Topic
Board Development & Technical Discussion
Re: Why? Because fuck u, thats why: version 70002 , blocks=
by
jdape
on 17/03/2016, 16:08:58 UTC
If this is their attack vector it could be automatically filtered via the log files if needed and blocked via the firewall. A normal node should not request the same block more than once.

Shorena,

You're correct.  The attack vector is not a direct interaction with the bitcoind node.  The attacker is only using that interaction to determine wether the node is running Bitcoin Classic.

If the attacker determines the node is Bitcoin Classic, they are adding the IP address a list of all Classic Node IP addresses.  The attacker then cycles through all the IP addresses in the list and points a DDoS at each IP for about 15 or 20 minutes.  The DDoS is a DNS amplification attack.  The throughput of the attack is approximately 500Mbps.  If the targets' internet downlink is equal to or less than 500Mbps they are effectively blocked from accessing the internet in any way.

Also, if there is more than one Bitcoin Classic node running on the same network there's a good chance you will get two or more attacks at once, increasing the attack throughput to 1Gbps, or more.

https://www.us-cert.gov/ncas/alerts/TA13-088A

Post
Topic
Board Computer hardware
Re: [WTS] KNC Titan 325 MH/s
by
jdape
on 05/01/2016, 01:06:05 UTC
They haven't worked in 15 months (since arrival from Sweden).  Runs best with them turned off.


2 dies off on ASIC 3 - any reason why?
Post
Topic
Board Computer hardware
Re: [WTS] KNC Titan 325 MH/s
by
jdape
on 05/01/2016, 01:04:23 UTC
I have never heard of anyone blowing a VRM by running at 325.  Gentarkin runs his like that and so do many others.  If he's not THE Titan veteran, I dont know who would be Smiley


Plus if you notice the current on the dies > 40A - the VRMs are only rated for 40A - meaning he's killing the VRMs to boost up the hashrate. I'd pass and I think other Titan veterans would as well.
Post
Topic
Board Computer hardware
Re: [WTS] KNC Titan 325 MH/s
by
jdape
on 03/01/2016, 17:56:02 UTC
Post
Topic
Board Computer hardware
Re: [WTS] KNC Titan 325 MH/s
by
jdape
on 02/01/2016, 17:30:45 UTC
Already have offer of $2750.  Market price is what the market will pay.


So since this only makes $300 a month and not $600 you should sell for $1500 and not $3000
Post
Topic
Board Computer hardware
Re: [WTS] KNC Titan 325 MH/s
by
jdape
on 01/01/2016, 19:36:14 UTC
oooh crizap.  bitcoinwisdom still has '50' listed in their litecoin profitability calculator.   Second time that's happened to me.  Guess it's only 340/month! Smiley

Post
Topic
Board Computer hardware
Topic OP
[WTS] KNC Titan 325 MH/s
by
jdape
on 01/01/2016, 02:53:31 UTC
KNCMiner Titan with 4 cubes.  Average hashrate: 300Mh/s - 325MH/s.  Completely Stable.  Runs for weeks and weeks with no intervention required.  Currently making $600/mo (20% return per month).  Why am I selling?Huh  I am just tired of having it in my workshop.

GenTarkin's Titan upgrade is installed.

Included:
Four (4) Titan Mining Cubes.
Controller Board with four (4x) xables.
SD Card.
Four (4x) power supplies (all 80 PLUS 'Gold') and all required cabling.

$3000 via Bitcoin or Litecoin.  Escrow okay.  Sorry, I'm not considering any offers.  I dont even know if I want to part with my baby...

Will package it well and ship it insured via Fedex.



Pics on my ebay auction:

http://www.ebay.com/itm/141865837537?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
Post
Topic
Board Computer hardware
Re: [WTS] KNC Titan 300MH/s Scrypt ASIC miner.
by
jdape
on 08/09/2015, 17:12:58 UTC
Still for sale.  Had a bunch of offers around $3000 but that's not gonna cut it for me.   Mining at 363Mh/s via ghash.io right now!
Post
Topic
Board Computer hardware
Re: [WTS] KNC Titan 300MH/s Scrypt ASIC miner.
by
jdape
on 05/09/2015, 16:24:06 UTC
Ah.  I was using the calculator at bitcoinwisdom and it still had 50 LTC listed as the block reward.

Using 25 LTC reward, ROI is in 420 days. 

As always, do your own math! Smiley
Post
Topic
Board Computer hardware
Topic OP
[WTS] KNC Titan 300MH/s Scrypt ASIC miner.
by
jdape
on 04/09/2015, 23:29:16 UTC
Hi,

I am selling my batch 1 KNC Titan.  I've had it since new.  It's never run more stable than now.  300Mh/s.

Full details can be seen on my eBay auction:
http://www.ebay.com/itm/-/141765826272?

$3500 $3700 Shipped & insured via Fedex 2 day in the continental US.
Bitcoin or Litecoin payment only.
Escrow okay.

Cheers!
Post
Topic
Board Mining (Altcoins)
Re: Swedish ASIC miner company kncminer.com
by
jdape
on 09/10/2014, 02:50:42 UTC
so those titans are totally fucked up ?

Com-fucking-pletely.   

In 6 days my best stretch of stable mining was the first 3 hours.  Now anything over 10 minutes is a miracle.  The hardware issues seem to get worse over time.
Post
Topic
Board Mining (Altcoins)
Re: Swedish ASIC miner company kncminer.com
by
jdape
on 09/10/2014, 02:48:47 UTC
The one I was overclocking was soldered directly to the Titan cube using TWO high quality 6x PCI-E connections (NOT the cheap square pins with the split down the middle).


2 PCI-E 6 pin connections for 1 cube?


Yep.  My first try ended with melting connectors.   Luckily I was home and smelled it burning before who knows what...
Post
Topic
Board Mining (Altcoins)
Re: Swedish ASIC miner company kncminer.com
by
jdape
on 09/10/2014, 02:46:52 UTC

Note if you are overlocking you had better have damn good connections at the PSU and the Titan.  The one I was overclocking was soldered directly to the Titan cube using TWO high quality 6x PCI-E connections (NOT the cheap square pins with the split down the middle).


Which pins are those?  The split is the as that is how the pin is folded when made.

The good pins have a dome shape on one side of the pin and only one split.  The crappy ones are square with two splits.  My PSU's over 1200 watts seem to have the good ones, the other 8 PSU's I have, don't.

Post
Topic
Board Mining (Altcoins)
Re: Swedish ASIC miner company kncminer.com
by
jdape
on 08/10/2014, 19:39:48 UTC
Try changing the voltage/speed of the others? I have some KNC gear that would act like that and required I actually raise the speed of the bum ones above stock, and in some cases lowering voltage. I've also noticed sometimes neighboring DC's if running too high, would shut down the bum ones. Almost seemed as if they were pulling current away from them.



Thanks for the tips, I'll try that. Can't raise clocks above stock, though. 300MHz is the highest selectable speed.

I found a config file in the Titan SD image that had a preconfigured max speed of 475Mhz for the Titan.  To overclock the Titan edit waas.c, recompile and install.

Edit: /home/pi/knc-asic/waas/waas.c

Change this line from 300 to 475:

Code:
#define MAX_DIE_FREQ_TITAN              475

Then:

Code:
cd /home/pi/knc-asic/
make raspberry
cp waas/waas /usr/bin/

Next time you restart bfgminer the advanced page will have selectable speeds up to 475 mhz.

FYI: I had a titan cube overclocked to 400Mhz and was getting about 100Mh/s but the hashrate slipped down quickly over time (even though dcdc's were fine). Not sure why, temps were decentsand everything was working fine.

Might try again at some point.

Note if you are overlocking you had better have damn good connections at the PSU and the Titan.  The one I was overclocking was soldered directly to the Titan cube using TWO high quality 6x PCI-E connections (NOT the cheap square pins with the split down the middle).
Post
Topic
Board Mining (Altcoins)
Re: Swedish ASIC miner company kncminer.com
by
jdape
on 05/10/2014, 21:49:59 UTC
I'm canceling my purchase and shipping my Titan back within the 14 day window.  It's defective dangerous rubbish.
Is that possible? What if they try to feed their B2B crap to you?

The Swedish government agency says it's possible.  KNC is gonna have to suck it up.
Post
Topic
Board Mining (Altcoins)
Re: Swedish ASIC miner company kncminer.com
by
jdape
on 05/10/2014, 17:52:15 UTC
I'm canceling my purchase and shipping my Titan back within the 14 day window.  It's defective dangerous rubbish.
Post
Topic
Board Mining (Altcoins)
filed complaint with swedish consumer protection agency
by
jdape
on 05/10/2014, 17:49:59 UTC
Filed a complaint with the Swedish consumer protection agency.  Feel free to use and modify this to file your own complaint.  Email it to konsumentverket@konsumentverket.se

How to file a Consumer complaint in Sweden:
http://www.konsumentverket.se/otherlanguages/English/This-is-how-you-file-a-complaint/

Right to Cancel a purchase within 14 days of receiving it:
http://www.konsumentverket.se/otherlanguages/English/Consumer-rights/Right-to-cancel-a-purchase-Right-of-withdrawal/

Defective Goods:
http://www.konsumentverket.se/otherlanguages/English/Consumer-rights/Defective-goodsComplaint-/

Code:
To Whom it May Concern,

I purchased a computer product named "Titan" from Kennemar & Cole AB (https://www.kncminer.com) aka KnCMiner. 

KnC 20nm Sweden AB
Birger Jarlsgatan 33, 5tr
111 45 Stockholm, Sweden
Org number: 556949-2928

The "Titan" product they have shipped to consumers is not functional and poses an extreme fire hazard.

I will now explain why the product is a fire hazard and that the company knows it is a fire hazard and has sold and shipped it to consumers anyhow.

The product is called a "Titan" and it's a specialized computing device.  It receives power from a standard ATX computer power supply such as those sold at any computer store around the world.  The Titan has uses a single "PCI-e" type power connector.  The industry rating of these types of connectors is for a maximum of 75 watts.  The problem occurs when the Titan is turned on and begins working.  Each unit of the Titan uses 245 watts of electricity.  This causes the connector (where it is attached to the Titan unit) to melt and when completely melted, the power supply pins touch each other and a short circuit is created with the potential to cause a fire.

245 watts is way more power than can be safely used with a 75 watt connector.

These devices are not certified by any authority nor do they comply to any standards.  They do not have any UL certifications of any kind.

I purchased this product expecting it to be safe to use and to conform to the national electrical standards and rules of Sweden.  It does not do so whatsoever and is a danger to all consumers.

The company 'KnC' aka "KnCMiner", "Kennemar & Cole AB", has produced similar products in the past that have also caused fires and melted due to their high power consumption, lack of safety features, and non UL listed specifications, parts, and build quality.  They could have revised the product to use two or three connectors and it would have worked safely.

Aside from the safety issues, the product is also defective and does not perform the functions it was advertised to perform.


I can supply more information about the product. 

I'm attaching a picture of the melted power connector cause by this device.  Luckily I smelled burning plastic and was able to turn off the device before and more damage was caused.

I have been in contact with dozens of other consumers who also purchased this product 'Titan' and have also experienced melting connectors, burning wires, non-functioning devices.  KnC is refusing to honor any refunds.


I would like to return the product for a refund.

Below you will find my original sales receipt.  The product was in production for many months and was finally delivered to me three days ago, on 10/02/2014.

Regards,




Post
Topic
Board Mining (Altcoins)
Re: KnCMiner Titan hardware issues
by
jdape
on 04/10/2014, 05:13:00 UTC
Same problem.  Spent two days staring at terminals and probably a dozen different errors. 

failed to set work state!

KNC totally forked us where the sun dont shine..

Post
Topic
Board Mining (Altcoins)
Re: Swedish ASIC miner company kncminer.com
by
jdape
on 30/09/2014, 13:32:19 UTC
What is the latest sent Titan order?

Interested in that one too - can we get some numbers?

My Titan (March 19th - 7:40AM - Order #1976x) shipped yesterday and is scheduled to arrive tomorrow. 

Side note -- I was just woken up by a phone call from UPS.  They needed a tax id for the shipment because the declared value was over $2500.

Proof: http://imgur.com/qcEqKTZ
Post
Topic
Board Mining software (miners)
Re: cgmon - mining monitor for Linux - auto restart, reboot, sick gpu, ASIC, &more
by
jdape
on 19/06/2014, 17:56:18 UTC
Hi,
Does anyone have noob instructions for installing cgmon?
Im pretty new to linux commands and need a step-by-step to get things running.
I would appreciate any help!
Thanks!
-Mike

The first post in this thread and also the top of cgmon.tcl has step-by-step instructions.

Cheers,
Jon