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Economy / Digital goods / Free Bitmain coupons available
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on: November 28, 2018, 06:36:00 PM
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I have 10 $55 Bitmain coupons which are expiring in 2 days (Nov 30th 2018). Don't need them so I'll send them to the first person who contacts me (privately).
Cheers!
EDIT: Coupons now expired. No takers - even for free. Lol.
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Bitcoin / Mining software (miners) / Re: Antminer S9/S9i firmware - Full voltage/frequency control - HAS HIDDEN DEV FEE
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on: November 06, 2018, 08:47:03 AM
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I downloaded and installed the firmware from the first link in the first post. I wanted to test and try it out so I didn't care about the dev fee. I didn't plan to run it long term. I tried to reinstall the firmware backup I had and although it said "successed" it would not revert back to the original firmware. This is something a virus would do and I now consider it to be a virus because of that. Something else people should be aware of when using this firmware.
If anyone can help me wipe this stubborn firmware off it would be greatly appreciated. The way I see it is I have 3 choices, either live with it, or swap out the control board with a known good one from ebay, or send this one back to bitmain and hope they will flash it back.
Are you sure? I installed it on 5 S9's and reverted back with no problem whatsoever. Maybe try installing the official firmware from the bitmain website instead of using the firmware backup you have? That's what I did and I faced no issues. The one thing I did do before reinstalling the firmware from bitmain was to reset frequency and voltage to defaults. Maybe that has something to do with it? Also you can't directly install the Asicboost Bitmain firmware over this firmware. You have to first install the autofrequency or the 650m firmware and then update it to the Asicboost one. Hope that helps. |
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Alternate cryptocurrencies / Mining (Altcoins) / Re: Bitmain launches the Z9 Equihash miner
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on: October 04, 2018, 05:26:23 PM
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This thread started when Z9 mini was the only Equihash-miner from Bitmain. the unlocked firmware you are refering to is NOT for z9 mini but for the bigger and faster Z9, correct ? ? ? Just asking so everyone reading your tips don't fuck up their z9 mini's !!! Check the link. The second line says: Hi all
Z9 (not Z9 mini) FW with unlocked frequencies is available for community for free
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Bitcoin / Mining software (miners) / Re: Braiins OS: open-source mining firmware [S9, T1]
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on: September 27, 2018, 08:11:07 AM
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It is developed by us - Braiins, the company responsible for Slush Pool since 2013.
Um... a bit confused here. The link from slushpool.com (see bottom of page) to it's maintainer Braiinz is to http://www.braiins.cz/. You're providing an entirely new domain - braiins-os.org - and that too from a newbie account. How do users trust that you're actually THE Braiinz that's maintaining SlushPool? Maybe a linkback from http://www.braiins.cz/ would help? Frankly, with the number of scams going around, I would seriously think twice about installing non verified firmware, from a new source, on my antminers. Been bitten once already. EDIT: The site is genuine. There's a press release on SlushPool as mentioned by @sarcheer a few posts down. |
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Alternate cryptocurrencies / Mining (Altcoins) / Re: Antminer Z9 mini overclocked
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on: September 13, 2018, 05:55:52 PM
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I don't think so. I currently have 5 z9 minis connected to 2 apw3++ psus on 110v without issue. However the above poster must be using a splitter to connect all 3 to 1 PSU which from what I understand is something you are NOT supposed to do.
Don't think it matters as long as the splitters are good quality and total draw is well within the rated limit. Time will tell though. Will report back if there are any issues. |
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Alternate cryptocurrencies / Mining (Altcoins) / Re: Antminer Z9 mini overclocked
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on: September 13, 2018, 09:25:48 AM
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Looks like you won the silicon lottery, good for you  . Whats funny is my batch 2 came with the may firmware but wont overclock past 662 stable, I can go for 668 but sometimes after 24-48 hours one of the boards drops off. I tried the fans at 100% and 750mhz but it crashes after a few min. Mine is stable at 662 55% fan setting. What I did was reverse the fan so that it pulls instead of blows and it dropped the temp by 10c and it runs at 50c. Damn. I was hoping to identify some pattern. Never won a single lottery in my life... my luck sucks that way. Maybe this is a good omen |
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Alternate cryptocurrencies / Mining (Altcoins) / Re: Antminer Z9 mini overclocked
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on: September 13, 2018, 06:34:23 AM
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To the best of my knowledge - No. One S9 consumes about 1400w using the same PSU. Don't think there's any problem connecting three of the Z9 mini's (which consume 1150w total) to a single power supply. Been working fine for me so far. Will update if there are any problems. TBH I don't see why there should be. |
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Alternate cryptocurrencies / Mining (Altcoins) / Re: Antminer Z9 mini overclocked
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on: September 13, 2018, 06:27:12 AM
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I have a question regarding the Z9 Mini - not sure if this is the right thread but it's the closest I could find. I'm planning on running 3 Z9 mini's off of a standard 1600w bitmain apw++ power supply running off of a 240v circuit. I plan to overclock all 3 to 750m (consumes about 400-450w each so well within the apw++ limits). My question is this: The apw++ has 10 pcie connectors. I need 12 to run 3 z9 mini's. I'm planning on connecting 9 of them directly to the hashing boards of the 3 units and using 2 splitters to split the power of the last pcie connector into 3 - for the 3 control boards. Splitter I'm planning to use (for reference): https://www.amazon.ca/StarTech-com-PCIEXSPLIT6-6-Inch-Express-Splitter/dp/B004NNTVT6/ref=sr_1_14?ie=UTF8&qid=1535493571&sr=8-14&keywords=pcie+splitterThis is assuming that the control boards dont take up much power compared to the actual hash boards. Given that, I'm thinking it would be OK to run three control boards off the same pcie connector. Am I correct in this assumption? Is it safe to do what I am planning to? Any input much appreciated. Thanks. I donnt think you will power 3 clocked z9's.. i have 2 z9's clocked on one PSW3++ Firstly i am getting 750 mhz 16.5/17 sols out of one z9 and i can only get 681mhz out of the other 14.7/15.2 sols if i push the second z9 higher i begins high and drops off to zero hash rate.. i am guessing power failure.. but 2 do run nicely off one Bitmain PSU Pics on my twitter https://twitter.com/mrtradermanIncluding the entire quote above so people know the context. Three Z9 Mini's work perfectly well off of a single Bitmain APW++ power supply running at 240v. May be a bit of a stretch on a 120v circuit since the APW++ only produces 1200w at 120v. It produces 1600W at 240v as per Bitmain's specs. Tested how much the control boards consume. Each control board consumes between 35-40w on its own. Three of them are well under 120w total so it's safe to link 3 to a single PCIE connector (rated at 150w) using the splitters mentioned above. Total power draw from the wall overclocked to 750M and running stable at ~16.5 KSol/s for the last 24 hours is about 1140w Pic of the setup:  Cheers! |
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Alternate cryptocurrencies / Mining (Altcoins) / Re: Antminer Z9 mini overclocked
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on: September 13, 2018, 06:09:07 AM
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Now I'm really confused. I've been following this thread for a while and was completely expecting my batch two z9 mini's to underperform compared to batch one. I received two of them on the 10th of September. But they're not underperforming. They're as good as batch one. Both of them. Both easily clock to 750 and have been averaging 16.5 KSols/s for the last 24+ hours. In case it benefits anyone in the community, these are the exact steps I took and the results: - Changed pool configuration. Set fan speed to 100% fixed.
- Initially tried the F12 trick to overclock the first one. Tried 750 off the bat. Didn't work. As in, the firmware still showed the machine running at 500M.
- Tried editing cgminer.conf directly (after granting it write permissions). Didn't work. The firmware still showed the machine running at 500M.
- Tried 600, 625, 650 with both methods above. Still didn't work. At this point I figured the firmware was locked to 500M. Didn't try 550M. Double checked cgminer.conf. It was correctly saving whatever frequency I put in it but the machine just wouldn't accept it. New firmware? Probably.
- Flashed firmware to one dated may 26th 2018. I had downloaded this from Bitmain way back just as a backup. Filename: Antminer-Z9-Mini-201805262047-500M.tar.gz
- Overclocked to 750M. Works perfectly as mentioned above.
I'm wondering if I was just lucky and got two good units but it doesn't seem probable considering the fact that the firmware I received was the one with the "Balanced" option on it. It had no option to overclock. The only thing I seem to have done (maybe differently) is set fan speed to 100% fixed. Maybe that has something to do with it? Worth a shot I guess. EDIT: Forgot to mention - temperatures on all boards are between 65-70 degs with the fans at 100%. |
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Bitcoin / Pools / Re: [∞ YH] solo.ckpool.org 1% fee solo mining USA/DE 251 blocks solved!
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on: September 10, 2018, 06:59:46 AM
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I believe there may be online tools to do so, but you can do it yourself with the latest version of cgminer and your own bitcoin daemon, using cgminer's --decode option. The instructions are with cgminer and in one of the last posts on the cgminer thread as well, but you'll need a linux box and a bit of know how to get it going.
Thanks @ck. I was thinking it would be far less involved than that. I'll give it a shot sometime. |
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