To OP: Have you taken any resistance measurements of R10 before and after pencil tweak along with resulting output voltage to give us target values for the R10 mod? edit: nvm... just looked back at OP and saw measure resistor R10 resistance (mark C). Mine shows 4.86kOhm. Lowering this resistance increases voltage of whole chain, if you use pencil mod and draw on the top of R10, you will decrease its resistance. Be careful, small adjust will change voltage relatively high. Resistance of 4.5KOhm rise voltage to about 9.6V across chain.
If you want to use soldering tools, you can unsolder R10 and solder here serially connected 3.7kOhm resistor with 2.2kOhm multiturn potentiometer. This will allow you both over/underclock. |
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As a Blast form the Past, here is the link to the original How to undervolt an s1 https://bitcointalk.org/index.php?topic=526060.msg5838713#msg5838713 Dropped them from 1.19w/GHs to an amazing 0.89w/GHs Compare that to today's >7-8x lower efficiency. Woof! Thought about doing it to the dozen s1's I had back then but -- each board had 4 regulators to tweak by hand and x2 per miner x12 miners.... just not worth my time to bother with. Now with the s9 and 1 tweak per board and then only as-needed -- thass a while 'nother story. Thx for the info. |
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Wozers!  1st I gotta say that I would think that a large bulk buyer like you *should* have a direct sales rep at Bitmain and through them better contact with support... Ya know, like most large direct sales companies would do for commercial buying customers. I'd certainly get in writing/email from Bitmain specifics on how many boards or other defective parts can be put on 1-ticket and sent in 1 package under that ticket#. Given Bitmain's Service history best to keep their tracking work load to a minimum. Wanna bet that they have folks manually entering info into their systems that communicate between Customs/shippers/and of course the repair company?  |
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As I see all miners are sold out at bitmaintech? https://shop.bitmain.com/main.htm?lang=enAlso I see the increasing price of the Bitcoin that's why I want to buy this miner and have found it on Aliexpress here http://ali.pub/a7b40It costs $2,150.00/piece with Free Shipping to United States via DHL. Estimated Delivery Time:6-13days Only three pieces available. Another seller's Total Price: US $1,748.27 - http://ali.pub/lti1nWith Estimated Delivery Time:8-16days Also five orders and only two pieces available. Why these prices are so different? Maybe I don't understand something? It is called charging whatever price the market will bear. I would also check to see what batch the miners are and if they are 'new' or have been used. |
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3-cents eh? Hmm. I have 7 semi-retired s7's using Sidehack under-volt/clock mod that pull 930w each and I'm Detroit area. Care to host them? Calc says @ 3 cents they would be good for $1.65 each after deduct for power cost. For that matter, if they can go to a good home...
are these miners not being utilized? Correct. They've been replaced with s9's and another should join them tomorrow if the latest s9 I ordered comes today. Still have 11 more of them (s7's) online. I've limited myself to ~22kw of free power at work so have been slowly replacing the s7's with 9's but am starting to get unsightly retired miner buildup... Well, the miners aren't so much the problem, it's their damn burros... |
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Got my stick in the mail today. Cute lil' thing.
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Hi all,
Call me crazy but I want a KNOB, is that too much to ask?
Control buck converter, core clock, and fan speeds on 6+ miners with a thermal override so as to avaoid hard shutdowns like the s7
Rackmountable, I want to start colocating these things so a clean rack apearance is a must (6U or W.E. works)
- string of miners off a PI would be a must
- wifi is cool
- 5 or 10 pcie sockets, 1200 watts maximum so we can use the little HP guys you sell, maybe 750 so that 2 could hook up to an ant miner psu.
My machines live in liscence grow ops in Detroit and The Bay
Detroit is 3 cents For primary hook ups and we have TONS of space
Trueco2oil.com that's me and we don't steal anything
3-cents eh? Hmm. I have 7 semi-retired s7's using Sidehack under-volt/clock mod that pull 930w each and I'm Detroit area. Care to host them? Calc says @ 3 cents they would be good for $1.65 per-day each after deduct for power cost. For that matter, if they can go to a good home... Trueco2.com - Wonder if Chronic Releaf here carries you? Last few oils I got are from Illuminati Extracts (also CO2 process). |
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once bitten twice shy, i will never trust you again.
I'm in this camp. asiabtc talked me into paying a ridiculous price to purchase their soon to be released blade miner, and after many weeks of waiting a bunch of gridseed miners eventually showed up. This was after he began selling the blades for nearly half what I was charged. Never got any sort of compensation or even an apology. I assumed it was communication issues involving a language barrier and eventually gave up. I wonder how many other people have been similarly screwed by this company with no recourse... Anyway, the writing is here on the wall for you. Trust them if you want to be parted with your coins. yeah if I recall 3000 usd to start and drop drop drop drop drop to about 350 usd in under six months. I would also say they killed ltc and it never really recovered. but that could be quite an argument as other factors stand in for that. To op I am still willing to test and review a model plus pay a fair price for it. But Most people here would say I am trustworthy and you are not trustworthy. I am like I will give a guy a second chance. So when you are ready to send me a demo I will run it test it do a long thread on it. And then pay you for it. or ship it back on my dime. your risk is I run away with one unit which since it is shipping to my home in NJ, USA means I would be running away from my home. Which I am not looking to do at the age of 59. Gotta say, ditto to what Phil says. I jumped into the hardware end of BTC because of an A1 miner I ordered from AMT/Josh Zipkin (@ notlisted - same miner for you?) back in Feb 2014. A whole saga in itself there... Point is, I did forensics on the A1 boards as-designed by the Swiss company Bitmine.ch and replicated by IMET for AMT. I said it before in the A1 and Innosilicon threads: Bitmine.ch/AMT were clueless as to even the most basic power network and thermal design rules. As for IMET's role - as a PCB assembly house they should have known better and after a proper design review given a polite"ahem" followed by their concerns about what should have been very obvious design flaws - not just taken the no-review approach of 'here is BOM, replicate the board'. Anywho, if you want a technical write up of it -- possibly with warts and weak points and all -- from an Industrial electronics designers viewpoint <raises hand>. Bear in mind that systems I've designed have proven lifetimes of decades... *if* anything stands out, of course remedies to weak points will be supplied as well |
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Has anyone figured out the HEX files for the Antminer S9? I wonder if this same procedure could be done to the S9.  I'd assume it can/could be done with pre-batch-16 miners that are using the old firmware. Batch-16 and higher with the auto-tune pretty sure this will not work. |
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UMC 14nm FinFET ready for production in 2Q17 October 27, 2016 http://digitimes.com/news/a20161027PD200.htmlUMC will ship 14nm chips to BitFury in small volume in the second quarter of 2017, said the sources, adding that shipments will expand in the following quarter. BitFury going for a 14nm FinFET chip next year, wow! Hmm. Wonder *who* UMC will use for the fab? Per-their website, they do not have either a 16 much less 14nm fab. http://www.umc.com/English/class_300/c.asp They only list in-house @ 28nm and (much) bigger nodes. I highly doubt that Samsung would be interested and that leaves Global Foundries with their fab in upstate NY. More specifically, what was the old IBM fab in Fishkill. GloFo licensed parts of Samsung's process so now offer 14nm to all comers. |
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Is another production run of these Gekko Compacs planned?
using the chips from s5's: no. AFAIK, no more chips available to harvest for them. Sidehack used all of the last s5's I sent him and I believe 2 from someone else to finish the last batch he made. I should have bought a couple when I had the chance. Hope to see a Gen 2 version now Gen-2 using a 14 or 16nm chip would be nice but not holding my breath there. Per Sidehack in a different thread, a full-up miner is on the plate for now. That said, it's up to him to say ASCI-10 LF (Line Feed or in this case, end of line). I mean if someone donates a sizeable stash of s5' to him, what the heck. Got everything for making them and if folks will pay enough for them to make it worth the effort, who knows? edit: Hmm. Plus as a bonus, if the plans for a 16nm miner pan out, could use the donated s5 hulks for them. Make a deal with the donator for part of the sales, win-win. There has GOT to be a pile of them out there somewhere from commercial mines upgrading and all... |
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Well, BW.com has at least four 14nm miners that I know: BW B11, BW B11-PLUS, BW B12 and BW B16.
No public release for sales though.
If that's true then I stand corrected. I knew they had some currently competitive chips but I thought they were 16 and not 14. BW has always used Samsung for their Foundry and Samsung only does the 14nm tech. (and 22, 28 and higher as well but different plants) Primarily for their own usage (phones/tablets, etc) but somehow the BW group struck a deal with them for boutique ASIC mining chips. The only other Foundry (aside from Intel/IBM) doing 14nm is GloFo who tried to develop their own process for it but eventually ended up licensing parts of the 14nm process tech from Samsung. The 16nm FinFET process was TSMC's answer to reaching the 14nm node. Not quite there but pretty close and more importantly, substantially better process yield for chips delivered to equipment makers. (In our case, miners) Of course as the end users are finding out... to me at least, long term chip stability/performance is -- still not there yet vs the now mature 22nm and higher nodes. |
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Is another production run of these Gekko Compacs planned?
using the chips from s5's: no. AFAIK, no more chips available to harvest for them. Sidehack used all of the last s5's I sent him and I believe 2 from someone else to finish the last batch he made. |
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Thanks so much for the recommendation. I am extremely scared to update Firmware. I have tried this on the other S7 that had this same issue and it turned into a brick. I am still crying over it  . Anyway tho, at this point, I will try anything. I have an open chat with Bitmain's support and waiting to see what they say about it. I noticed if it's not mining, it will show x.x.x.x where the Hardware Version is. It will only report this when it mines, which is when I turn it on. It tries to mine for a minute or two and then gives up. I also notice when it's trying to mine after power up, the load average on some hash boards goes up to 3.12 or even higher. My working miner's load average hovers at about the 1.0 mark. Do you think my hash board(s) are toast ? Thanks again for all your help !! First: Give these some time to do their thing. It takes about 2-3 min for the miners to go through all of its warmup cycles. Fans will start/stop and power used will go up/down. I usually don't start checking on a miner until about 5min from power-on to give them time to settle down. The Hardware Version x.x.x is from the boards not being ready yet or are otherwise unable to talk to the OS or CGminer. To hopefully un-brick ref https://bitcointalk.org/index.php?topic=1658996.msg16661364#msg16661364Ya is for the s9 but pretty much the same applies for the s7. Just be sure to give the process several minutes |
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As you can see, it will not mine. It tries to but everything gets discarded. Strange. LOL, How do I add a pic here ? You can't and have it directly displayed. Not enough time here and not enough posts. I *think* you can add just a link to one. Has to be from Imugr and must be the direct web link -- not one formatted for forums, bbs, etc. No matter what, no s7 from batches after about 5 or 6 are faster than 4.7 or 4.8 THs at stock speeds. So, what speed is reported? (if any) If you can get the Status page of the GUI to display something, what MHz is the speed reported? |
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Nah there is still Batch 18 left... for now.
I seriously thought (for about 1 min) about ordering 2 of the b18's. But -- I've really been waiting for another release of the R4's so I can get one or 2 for room heaters. Ya know, cool weather here and cold arriving... Wisely chose to Just Say No and stuck with just the one. Since again it will be replacing a power slot in my main farm at work that is currently used by a s7... starting to really get an unsightly buildup of off-line s7's growing at work  Then also in Pasture there is the uber-rare fully functional retired A1 rig from AMT, 2x s2's, 2x C1's, and 2x s4's... Quite the collection. Glad I was at least able to offload literal pile of my old s1's 3's, 5's, and another s4 to Sidehack  |
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All "Sold Out"!
Well damn that was fast! Glad I um, ordered #9 for me just after lunch. Is a batch-18. Just couldn't see spending ~$400 USD more for the not-enough-faster batch-19. In the past the price diff was more like ~$200 or a tad more so I had always gone for the faster ones released. This is 1st time I didn't. |
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good morning ,
is it possible to control antminer s9 remotely ? without being on the same network ?
Go to https://bitcointalk.org/index.php?board=42.0 for mining software topics before -ck moves this there.... I highly recommend using Awesome miner. |
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What kind of S7 did you scrounge up that it "only" gets up to 5.22GH? The best stock model I know of defaults to I think 4.86TH
I wonder if it was running hot, or if it was a 600MHz model that got cranked to 700MHz and might have damaged the string regulator.
missed that part entirely <doh!> Ja. My s7 batch 1 (700mHz) and batch 5 (650mHz) routinely exceed that but all other batches hit closer to the 4.7 to 4.8 mark at stock speeds. God I love those 2. Very hungry but the b1 is normally over 5.6THs and the b5 close behind around 5.4. Amazing and with zero trouble to-date <knock wood> |
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ack'd payment and pm sent.  |
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