Search content
Sort by

Showing 20 of 534 results by kahc
Post
Topic
Board Services
Re: ➤ Top-notch Cryptowriting & Eng⬄Ru Translation Services
by
kahc
on 07/07/2020, 18:08:58 UTC
Translate to Russian, much appreciated!

Code:
Withdrawing ERC20 token issue.

I have tried to withdraw EVN several times now, it gets stuck in "In process" then cancelled after a while.
I have checked everything, right address, and the wallet is online and up to date.
Please advice.
Thanks!/code]
Post
Topic
Board Marketplace
Topic OP
[FREE] Scraping Telegram Group Members for you
by
kahc
on 15/03/2020, 21:24:37 UTC
No longer offering this.

I will scrape Telegram groups for you, free of charge.

So why scraping members from Telegram Groups?
It’s a nice opportunity to get attentions from related Telegram groups. You may want to scrape members from other related groups and add them to yours.

Requirements:
Telegram group must be public.
Telegram group not over 50000 members.
You promise not to engage in illegal activities.


Limits per user:
Jr. Member: 2 groups
Member: 3 groups
Full Member: 4 groups   
Sr. Member: 5 groups
Hero Member/Legendary: 10 groups



PM format:
Code:
Subject: Telegram group members #your bitcointalk username
List of telegram groups.
Last seen: HOUR/DAY/WEEK/MONTH
Members with avatar: YES/NO
Post
Topic
Board Marketplace (Altcoins)
Re: [WTB] - EVN tokens (Envion AG)
by
kahc
on 17/02/2020, 11:53:00 UTC
I don't think anyone will want to sell to you at the price you quoted. 0.000005 is just $0.049 while EVN is listed on Yobit(https://yobit.net/en/) at $0.12 and token.store (https://token.store) at 0.108322. I bet no one sells below the real market price once an exchange has it.


Yes, in correlation to low volume, that price is true.
However, look at the order books, the ratio between buy and sell orders.
The EVN price will more than likely plunge to hell, if the volume goes up.

Also, EVN holds no value now, since the company is in the process of getting liquidated.
Only use for the token right now is for original ICO holders to recuperate some loss when the liquidation process finalize.
Post
Topic
Board Marketplace (Altcoins)
Topic OP
[WTB] - EVN tokens (Envion AG)
by
kahc
on 15/02/2020, 07:51:26 UTC
Hey,

Looking to buy 10000+ EVN tokens.
Pay in BTC or ETH.

My offer is up to 0.000005 BTC per EVN.


Post
Topic
Board Mining (Altcoins)
Re: Z9 list of working pools/Fork updates
by
kahc
on 02/12/2018, 12:22:55 UTC
Is there an updated list on what we can .one with z9 mini please? I hate the fact that zec has owners fee. Also which pools I could look at?


https://miningpoolstats.stream/bitcoinprivate
This is the best list I have found so far, look to the left for available Equihash coins and pools.
Post
Topic
Board Mining (Altcoins)
Re: Antminer Z9 mini overclocked
by
kahc
on 08/09/2018, 23:48:46 UTC
My Batch 1 mini came with a 3000rpm fan. I replaced it with a 5400rpm fan. set it to 100% and the clock at 750. In this config I have 1 board reaching 70deg C and the other 2 are below that. The boards are in the 55deg C range. I have a second batch 1 mini coming in a few days and I have a 6000rpm fan i will use with that one. The seller states it runs at 16kh/s as is but I feel better with the high speed fans.

Here is more data
When I am hashing at 16.9 kh/s the share rate on ZEN, @ suprnova, my share rate for the 16.9 kh/s, with 1 controler (original) configuration, is 913. In the 2 controller configuration it's 1010.
My Efficiency dropped from 99.9 to 98.8 respectively.
Round earnings went from .0367 to .0404 respectively.

Bitmain must have messed it up to equip your Z9 mini with a 3000 RPM fan.
All mine Z9 minis from batch 1 came with 6000 RPM fans (Delta Electronics QFR1212GHE).
Post
Topic
Board Mining (Altcoins)
Re: ALLMINE INC - FPGA Cryptominer
by
kahc
on 07/09/2018, 22:28:35 UTC
I'm interested in buying 1 unit of this FPGA Cryptominer card and found all buying options ran dry now, seeing  https://fpga.land/.

How can I buy it from you? (This is from South Korea.)  Is it still valid unit now or better, newer unit on the way soon?
(I have no cryptocurrencies yet.)


Thanks in advance.



There are two different FPGAs available for mining purpose:
BCU-1525 and CVP-13

https://store.mineority.io/
Post
Topic
Board Mining (Altcoins)
Re: Z9 Mini Dual Fan
by
kahc
on 06/09/2018, 21:24:03 UTC
Thank you very much, but one question. Why do you not use screws to connect the plate with the miner?

Actually my initial plan were to make a cowl that could be attached to the back of Z9 mini with screws.
The design I'm using now is more like a prototype to check if things fit. Surprisingly the prototype fitted perfectly with duct-tape, so I just went with it and dropped the screws part.
Post
Topic
Board Mining (Altcoins)
Re: Z9 Mini Dual Fan
by
kahc
on 06/09/2018, 10:23:52 UTC
@kahc
Can you please upload the plans. I was already thinking about buying a old miner and use the plates, but did not found one cheap enough.


Here is the STL file of the 3D model

The Z9 mini cowl looks like this:



The cowl(barely visible) duct-taped to Z9 mini:
Post
Topic
Board Mining (Altcoins)
Re: Antminer Z9 mini overclocked
by
kahc
on 04/09/2018, 13:46:51 UTC
Can anyone advise please? or comment?

I have a batch 2 Z9 Mini overclocked to 650, so not pushing to much, getting all three cards hashing and an average 14.5. No HW Errors....

However, i get approx 30 rejected shares in say, a 24 hour period?

Is this good/bad? Is this to be expected if overclocking? Should i reduce overclock?

Thanks Guys

Whats your ratio of accepted/rejected?
I consider anything below 5% as good.
Rejected shares can be caused by internet latency or pool side issue, not solely because of OC.

One of my Z9 mini OC to 700 has been running for 4 days.
Accepted/Rejected are 56564/55 which translates to less than 0.1%.
   
Post
Topic
Board Mining (Altcoins)
Re: Z9 Mini Dual Fan
by
kahc
on 03/09/2018, 21:59:23 UTC
Watching this with interest, the z9 mini is one loud machine so anything to make it quieter is a god send.

Try the S9... Z9 is a dream by comparison. ;-)

-j

Saw your neat setup with the tent in another thread.
Wondering what noise level you get.
Post
Topic
Board Mining (Altcoins)
Re: Z9 Mini Dual Fan
by
kahc
on 01/09/2018, 01:26:59 UTC
Depends on your setup and where you keep the Antminer(s).
The main reasons for me are heat extraction and noise reduction because I live in a one-room apartment running several Antminers in soundproof boxes.

If you attach a hose to Z9 mini without an extra exhaust fan, the intake fan would have to run at max fan speed most of the time to be able to keep the Temp(Chip) under 85.


Ahh, I always forget people try and run industrial mining equipment in places where they really shouldnt lol

Hehehe just a man on the street trying to make a living.
The upside is that they run no more noisier than GPUs now, I can actually sleep without earplugs.
Post
Topic
Board Mining (Altcoins)
Re: Z9 Mini Dual Fan
by
kahc
on 31/08/2018, 11:50:27 UTC
What exactly is the purpose of adding a second fan other than wasting electricity? Even overclocked these things pull a hair over 400 watts and dont put much heat out at all.

I dont get it?


Depends on your setup and where you keep the Antminer(s).
The main reasons for me are heat extraction and noise reduction because I live in a one-room apartment running several Antminers in soundproof boxes.

If you attach a hose to Z9 mini without an extra exhaust fan, the intake fan would have to run at max fan speed most of the time to be able to keep the Temp(Chip) under 85.
Post
Topic
Board Mining (Altcoins)
Re: Z9 Mini Dual Fan
by
kahc
on 30/08/2018, 23:38:11 UTC
I changed for testing  one of my Z9 mini to dual fan.
https://image.ibb.co/gQhXXp/mini_edit.jpg

Maybe later I will cut a big whole in the backplate.
https://preview.ibb.co/my7hXp/IMG_20180828_190527_HHT.jpg

Stats of the dualfan Z9 mini
https://image.ibb.co/cF1ZCp/mini1.jpg

Stats of the normal Z9 mini
https://image.ibb.co/jEPXyU/mini_2.jpg

EDIT
Some thoughts, the big advantage is that the miner have now enough power to push the Air out. My problem is that there is no good way to install the hose. Does anybody know where to get a backplate with screws for the other side.

The hose (I'm not sure about the right word in english)
https://preview.ibb.co/kNWFk9/IMG_20180828_200519_HHT.jpg


I couldn't get a hold of the backplate either, I asked around local mechanical workshops, all quoted me $200++ for making such plate in aluminium.
If you know someone with access to a CNC then maybe you can get it done for a reasonable price.


In my case, I 3D modelled a fan mounting bracket( aka cowl) and got it printed locally ( 3dhubs.com), it costed about $15.
The cowl is attached to the backside of the antminer with duct-tape.
The hose you are referring to is called a duct, sonodec on the other hand is a hose.
The duct is attached to the fan, and the fan to the cowl. M4 screws, nuts and washers can be obtained locally.

So my setup goes like this:
flexible hose -> duct -> exhaust fan -> cowl -> Z9 mini -> intake fan


I can upload some pictures later once I get home.
Post
Topic
Board Mining (Altcoins)
Re: Z9 list of working pools/Fork updates
by
kahc
on 04/08/2018, 12:37:52 UTC
Guys it's pretty fast to just test it. If you won't, I will when I get home.
Some fan designs work better this way.

It works, i am seeing about 5 degree drop in temperature.

Those readings are working against physics and definitely not accurate.


Not necessarily. The difference between the efficacy of push or pull would be determined by the design and layout of chips/hot spots as well, not simply direction.

I have a Z9 mini myself and seen the inside, there is no way for an exhaust fan to be more efficient than an intake fan, placed either side of the Z9 mini.
Pulling air out of Z9 mini is like placing a dense fabric air filter in front of the intake, restricting the airflow and reducing the efficiency.

Whats the difference between pushing and pulling air through the same space?

The fan on Z9 mini is both High static pressure and High CFM.

In push configuration the fan pulls in air from the open with nothing resisting and allows more air to push the heat away from the heatsinks.
When you set the fan to pull air out of the Z9 mini, the components inside cause blockage which slows the fan down.

Pull or Push configuration on High static pressure and high CFM fans should produce similar results.

Post
Topic
Board Mining (Altcoins)
Re: Z9 list of working pools/Fork updates
by
kahc
on 04/08/2018, 09:07:10 UTC
Guys it's pretty fast to just test it. If you won't, I will when I get home.
Some fan designs work better this way.

It works, i am seeing about 5 degree drop in temperature.

Those readings are working against physics and definitely not accurate.


Not necessarily. The difference between the efficacy of push or pull would be determined by the design and layout of chips/hot spots as well, not simply direction.

I have a Z9 mini myself and seen the inside, there is no way for an exhaust fan to be more efficient than an intake fan, placed either side of the Z9 mini.
Pulling air out of Z9 mini is like placing a dense fabric air filter in front of the intake, restricting the airflow and reducing the efficiency.
Post
Topic
Board Mining (Altcoins)
Re: Z9 list of working pools/Fork updates
by
kahc
on 04/08/2018, 08:28:52 UTC
Guys it's pretty fast to just test it. If you won't, I will when I get home.
Some fan designs work better this way.

It works, i am seeing about 5 degree drop in temperature.

Those readings are working against physics and definitely not accurate.
Post
Topic
Board Mining (Altcoins)
Re: Z9 list of working pools/Fork updates
by
kahc
on 03/08/2018, 15:08:27 UTC
I only reversed the airflow
My temps at 750mhz:
Before: 67-71° at 80%
Now: 54-59 at 70%


Lol, what a troll.
There is no fucking way to decrease the temp as you claimed just by reverting the intake fan.
The air flow will be so restricted, I wouldn't be surprise if the Z9 mini reaches the cut off temp.
Post
Topic
Board Digital goods
[WTS] $100 Bitmain coupons.
by
kahc
on 22/07/2018, 08:24:43 UTC
Hey,

Have 100 x Bitmain $100 coupons for sale, expiration date 31 July 2018.

Price:
Depending on quantity, 4 - 10 USD per coupon,

Payment:
BTC or ETH .

Coupon works on every Antminers.
Only one coupon can be applied per Antminer.

You have to register your email with Bitmain before coupon transfer can be taken place.
Coupon will be transferred to you once payment is confirmed.
Post
Topic
Board Mining (Altcoins)
Re: any good ZCL pool for Z9? beside suprnova
by
kahc
on 01/07/2018, 09:10:37 UTC
any good ZCL pool for Z9?
suprnova is ok, payout not too good 2.6 ZCL with OC to 14k sol

anyone try this pool https://pool.miningspeed.com/

I am getting about 3.3 ZCL / day , 15k sol on miningpoolhub.com