Looks like I have the same issue with my new Antminer S9-B2 on GHASH-IO. It shows Alive and will GetWork but all work is Rejected. The Accepted on the Miner Status Page stays at zero. The Miner works fine on Eligius and AntPool. If I put GHASH.IO as the primary pool the miner keeps trying to fall back to GHASH.IO and the hash rate is pretty bad on the other pool so it just eats electricity with low earnings.

I agree, it is a bit high. The S5's on eBay are running around $250-$350 without a PSU on average. This unit has been running about 3 months so it's barely broken in, it's got an additional cooling fan and it is very stable at a 368.75 freq hashing at ~1210 Gh/s. I've had the Ultra X4 1,000W PSU for years and it's solid. The price is now $300 for the Miner and the PSU is optional for $75. Thanks for the input.

1/24/16 - Price reduced: $300 for the S5; $75 for the 1,000W PSU (optional)

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This is a AntMiner was purchased new in September, 2015 (for $440) and it is in like new working condition. An additional cooling fan has been installed providing additional cooling for moderate, stable over clocking (368.75 Freq) for an increased hash rate at ~1210 GH/s. An Ultra X4 Gold Modular 1000W PSU and all required cabling are included. This miner has been run in a stable cooled environment since purchase. The AntMiner comes in the original shipping box from BitMAIN.

Included
BitMAIN AntMiner S5 Batch 3
Ultra X4 Gold Edition 1000W Modular PSU
AntMiner ATX Power Supply Jumper Switch
Power Cables
Ethernet Cable
Original BitMAIN AntMiner Packaging

Terms
$450.00 (firm)
Payment Method: Bitcoin (preferred) or Postal Money Order
This AntMiner and PSU are sold “AS-IS”
This equipment is in like new, used condition
All sales are final, no refunds or returns accepted
I'll split the shipping costs, insurance included and I will send a tracking number
If interested, PM me and I will send photos of the Miner and Usage Stats screen

Hey cryptoglance,

I am curious about how cryptoGlance can pull in the specs of the Miners, like how the pool addresses, userids and password are configured, hash rate, fan speeds, etc., without authenticating to the Miner. Are these API calls from cryptoGlance to the miner basically publicly accessible to any systems on the local subnet? I haven't tried it yet but I expect that the options to change the pool configuration or reboot will prompt for the Miner userid and password? I am just curious about the behaviour of the Miner that cryptoGlance is leveraging.

-Ondart

Here are a couple of observations to help with your ongoing development of cryptoGlance:

- When I setup my GHash.IO Pool and configured the API on the GHash site to get my Userid, Key and Secret, I selected check boxes: 'Account Balance'; 'GHash.IO Hash Rate'; 'GHash.IO Workers'. The account balance does not display on the Dashboard; the Hash Rate, Workers and URL are displayed but there is no field or data shown for the balance. Is this by design or something that may need a future change?

- I use an Armory Wallet and keep my wallet with my private key on an relatively inexpensive Mini PC off-line (never touched the Internet) device. My Ubuntu computer only has Armory running with my public key(s) as a Watching Only wallet. When I go to cryptoGlance and attempt to set up my mining Wallet it asks for my public key. It looks as if Armory doesn't have a single public key for security reasons. It creates a new address for each transfer to the Wallet and there are as many addresses listed as one has received funds to the Wallet.

Reference: https://bitcointalk.org/index.php?topic=1241860.0.

In this case it is not possible to use the cryptoGlance Wallet dashboard feature if one uses an Armory wallet. This doesn't sound like an easy resolution for that feature but I wanted to throw it out there for thought.

-Ondart

This is a pretty impressive tool. I've got it working on Ubuntu 15.10 (Wily) running lighttpd and php5. I've got v2.1.0.28 running and I successfully connected to the GHash.io Pool too. It took a minute or so for it to display the stats after initial pool configuration but its working nicely. The Android App is also impressive. I did notice on the Android App when you click the Navigation menu and select a menu item like Tools or Help the menu just goes away so those features don't seem to be working on Android.

I'm getting a low cost NUC soon to run as a full Bitcoin node and I intend to run ctyptoGlance on it with SSL and with my router configured with port forwarding for remote access. Thank you very much for such a useful tool. I am looking forward to future enhancements. And, I have sent a donation...  

-Ondart

I've changed my AntMiner SSH password after logging in via root@<IP address>, logging in with the default userid and password for SSH and then running passwd to set a new password. After booting the miner, the password reverts back to the default setting and my new password is not functional any longer. Has anyone else experienced this and is there any way to prevent the default password from being reset? It sure it strange and its a vulnerability if I were to allow port forwarding connectivity remotely through my router.

I couldn't let this go and I finally resolved the problem. I determined that the file corruption issue was resolved by formatting the dedicated SSD stick used to host the block chain (~/bitcoin) with the Flash Friendly File System (f2fs) instead of the Linux ext4 file system. Once that was done the Bitcoin Node running on Raspberry Pi 2 B was stable and has been running now for several days and averaging 32 connections with bitcoin-qt memory usage ranging between 30-50%. The Linux ext4 file system can't handle the load. I also switched to Ubuntu MATE v15.10 (Wily) and Bitcoin Core v0.11.2. I used a 1 MB swap file and its currently being used about 30% (I may bump that to 4 GB). I'm a happy camper with a ~$150 RPi stable functioning Bitcoin Full Node. Wohoo!  

-Ondart

Recent testing has shown that using the ext4 file system is not able to support the heavy load of Bitcoin Core (~/.bitcoin) causing file corruption after minutes or a few hours of use and resulting in requiring a re-download of the block chain again or re-side loading it from another system. Formatting the dedicated MicroSD or SSD External Storage supporting Bitcoin Core using the Flash Friendly File System (f2fs) has resolved this problem allowing for stable 24/7 operations. The procedure above has been updated to reflect this change.

I have also just completed implementing a Full Bitcoin Node on the Raspberry Pi using Ubuntu Mate v11.10 (Wily) and Bitcoin Core 0.11.2. The procedures were similar. The Make did not error with the leveldb library so this section can be skipped above if running these versions: 'Compile leveldb Library'. In my opinion, Ubuntu is so much smoother and refined and I prefer this over Raspbian.

-Ondart

I've got an S5 and an S7 running and I am making a profit after electricity costs but not yet on return on investment (ROI) until early nest year. I had to insulate my small basement storage room to reduce the very loud noise to make my wife happy. I also had to install a vent fan in the wall to expel the significant heat the miners produce into the garage, and I had to install two vents for air input. I also had to extend two electrical sockets from different circuits to the basement, one for each miner. The costs of the miners, power supplies and this additional hardware for electrical, cooling and noise will take me a while before I get my return on investment. If you are single, heck, you can run a miner in the kitchen and heat the house if you want to.

I sell some mining coin to pay for the electricity costs over and above my normal budget for electricity every month. I am mining to gather bitcoin over time and I don't worry about the price. If you want to get started on a small scale, purchase an AntMiner S3 or an S5 for a few hundred bucks and give it a go. Before I did all this I learned how to establish a cold wallet and a watching wallet to protect my proceeds. I also read up on the mining reward halving that happens every four years to determine if the profitability will continue with the miners I have when the halving occurs. I consider it a hobby and I enjoy it.

-Ondart

Thanks for the reply. I know I can use these settings with Bitcoin Core. Are you saying that these commands that typically are used with Bitcoin Core in bitcoin.conf will also work on a Miner in cgminer.conf? That is my question. Can I configure the miner to add my bitcoin full node as one of the full nodes it uses when mining?

-Ondart

Thanks for all the advice. I'm going for one controller for two S7's; a spare controller is a good incentive.

Doh! Thanks! 

I saw some images of the S5+ and the S7 where three units, side by side, are connected to a single controller on the middle miner. Is there any benefit to doing this vs just running each on its' own controller individually? I am curious, is anyone doing this?

-Ondart

I knew I had plenty of power, I had not thought through splitting the cables out and use the 2nd PS for my next S7 for some odd reason. I really appreciate the input Paulb787. I'm going to order them right now. 

Paulb787,

I currently have an S5 and an S7. My first was the S5 because the initial out of pocket expense was relatively low and I wanted to learn how it all worked without forking out a bundle until I got a good grasp on it. I've been trying different mining pools too. My current goal is eventually to run 3 S7 AntMiners at home. The S7 will still be profitable after the halving around mid-next year. The S5 is a close call and it will be profitable depending on the price of bitcoin or the difficulty. If the price drops and/or the difficulty increases and the profit is breaking even, you can under clock it a bit to lower the electricity costs to keep it going. I am saving for a 2nd S7 when batch 4 is released. I'll be saving for the 3rd S7 after that but I intend to sell the S5 somewhere around  a month away from the halving next year on ebay and I intend to use the proceeds toward that 3rd S7. I figure I can run on the S7 for quite a while after the halving, depending on the changing rate and difficulty level of course, and then look at this all again when the next ASIC chip and new miners are released.

Power, noise and heat are a real struggle. I am running an S7 with two EVGA SuperNOVA 1300 G2 80+ GOLD, 1300W (10 yr warranty!) on a single 15 AMP circuit without any issues. My basement allows for tapping off several power circuits from other parts of the house or it would be a problem. The heat in a little basement is a problem. I just ordered a wall vent fan with a thermostat so I can push the heat out of the room into the garage so I can close the basement door. The noise has been a problem for me and my wife so we have worked together and just put in insulation in the basement ceiling and walls to dampen noise and that seems to have done the trick once I can keep the door closed when I get the wall fan. I've got room to add a 2nd wall fan and will do it if the temp is not good enough. My ultimate goal is to run three AntMiners and keep them cool and if the wife is happy, it's a win win! It's a heck of a science project and a whole lot of fun.

-Ondart

I see the transaction is indeed unconfirmed but there is a warning notice on the page (http://blockchain.info):

Confirmation Warnings
This transaction has an output less than 0.01 BTC but doesn't include a fee. This transaction has a very small output and is non standard. The transaction fee is less than recommended.

It should go through eventually or be rejected. It may have gone through normally with an .0001 fee.

-Ondart

I have updated the procedures above with new sections as follows:

SSD Performance Tuning – TRIM the SSD
SSD Performance Tuning – Disable SSD 'noatime'

I have added a bash script to automate side loading the block chain to an SSD

Optional Automated Sideload Script

-Ondart

2112, I totally agree with you. It's a science experiment to attempt to build a stable full bitcoin node for about $150 with room to double the size of the block chain on disk and have it reliable and on 24/7. The allure of $20 a year in electricity costs is a factor. However if I can run these SSD read/write tests for days on end without error on the Pi, and with my observation that the CPU with bitcoind running was averaging 25-50% and memory stable and rarely using the page file, I would challenge that there is not a hardware problem, it may be something else, and this may work. I certainly could be wrong. I've got it running now with the looping md5 hash script and intend to run it for a few days.

If the SSD hardware proves to be failing then your suggestion using a disk with a power supply is a good one. On the flip side however, I think this System76 unit would be the way to go. I've been eye balling it for a while now. It might be a good candidate for a never touched Cold Storage Wallet or a Bitcoin Full Node.

https://system76.com/desktops/meerkat

-Ondart

Hey 2112, thanks for the idea of heavily exercising my SSD. I didn't get as sophisticated as your concept to use the output as input to generate a never ending process that would fill the disk. But, I did use your idea to take the existing blocks on the SSD and md5hash them to individual files containing that MD5 hash in a test folder on the same SSD. This is effectively reading, processing and writing out to the same SSD. This should run long and hopefully show me if there is a hardware problem I would think. I am not sure where I will go next if this produces no errors. I am tailing the syslog and the user.log. What other logs do you recommend I monitor for hardware errors?

Here is my script for reference:


One thing to note also is that I am using a 128 GB Corsair Voyager GTX flash drive. It has an embedded SSD controller, the reason I went with it. However, unlike normal SSDs there is no power  to apply. I am wondering if the Pi has enough current to handle it and if not maybe it is a potential root cause.
-Ondart