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Showing 20 of 29 results by jakaba
Re: Air Quality: What limits are acceptable? - Particulate Matter Monitoring
⭐ Merited by NotATether (2)
Yes of course is air quality inside is strongly related to outside air quality. Installing a filter system is definitely something we are planing for the future (when more high end miners are deployed). As for the moment we have to make it work without one. But even when we have a filter system I would like to be able to evaluate how good or bad it is working. Thats why I am monitoring air quality.
From my research data centers typically aim for particulate matter concentrations of less than 1µg/m³. I suppose similar thresholds should be applied for mining farms as well.
This information can be found at section 3.1 in Table 2 in the following document: https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.362.2554&rep=rep1&type=pdf
Contradicting to this Oliver from the WhatsMiner Support on Telegram (https://t.me/whatsminercommunity) has told me that WhatsMiner devices should be deployed in environments with particulate matter concentrations of < 0.5mg/m³, which would mean < 5000µg/m³. Oliver may have mixed up the units here (meaning he wanted to say < 0.5µg/m³) but nonetheless I feel as if it should be easier to find accurate and valid information on this.
From my research data centers typically aim for particulate matter concentrations of less than 1µg/m³. I suppose similar thresholds should be applied for mining farms as well.
This information can be found at section 3.1 in Table 2 in the following document: https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.362.2554&rep=rep1&type=pdf
Contradicting to this Oliver from the WhatsMiner Support on Telegram (https://t.me/whatsminercommunity) has told me that WhatsMiner devices should be deployed in environments with particulate matter concentrations of < 0.5mg/m³, which would mean < 5000µg/m³. Oliver may have mixed up the units here (meaning he wanted to say < 0.5µg/m³) but nonetheless I feel as if it should be easier to find accurate and valid information on this.
Air Quality: What limits are acceptable? - Particulate Matter Monitoring
⭐ Merited by NotATether (3)
I have been monitoring the air quality inside one of our mining locations for the past 6 weeks with a rather simple setup using a Nova Fitness SDS 011 Sensor.
Little did I know when I started this experiment that I would have such trouble finding information about acceptable limits for crypto mining hardware.
We have Antminer S9 and Whatsminer M20S devices deployed there. I have not been able to find any information about safe values regarding particulate matter concentration. The specific miners are just examples. I am more interested which particulate matter limits would generally be considered excellent, good, or critical for computing devices such as miners.
Thus far I have only been able to find information regarding human health, but I am unsure how this would translate to mining-hardware longevity.
Monitoring results
The sensor is able to detect particulate matter concentration PM2.5 and PM10.
In the past 6 weeks PM2.5 was at an average at 2.60µg/m³ while PM10 was at an average of 4.24µg/m³.
A graph and a table showing the full monitoring data can be viewed here:
https://ibb.co/FJTyrR5
Any expert insights or links to useful resources would be greatly appreciated!
Little did I know when I started this experiment that I would have such trouble finding information about acceptable limits for crypto mining hardware.
We have Antminer S9 and Whatsminer M20S devices deployed there. I have not been able to find any information about safe values regarding particulate matter concentration. The specific miners are just examples. I am more interested which particulate matter limits would generally be considered excellent, good, or critical for computing devices such as miners.
Thus far I have only been able to find information regarding human health, but I am unsure how this would translate to mining-hardware longevity.
Monitoring results
The sensor is able to detect particulate matter concentration PM2.5 and PM10.
In the past 6 weeks PM2.5 was at an average at 2.60µg/m³ while PM10 was at an average of 4.24µg/m³.
A graph and a table showing the full monitoring data can be viewed here:
https://ibb.co/FJTyrR5
Any expert insights or links to useful resources would be greatly appreciated!
Re: Whatsminer firmware: cron for programmatically starting stopping mining process
⭐ Merited by mikeywith (2)
I am unsure whether or not this would result in the same level of wearout. I could imagine it depends on the specific implementation of the mining software/firmware and how it handles stopping the mining process. One thing that's different for sure is that fans can keep running a bit longer for cool down and that the control board will not suddenly turn on and off all the time. Given that hash boars are obviously the most important part of the miner this question is something I would really like to get to the bottom of. I'd probably have to ask a hardware engineer or developers of the firmware.
Re: Whatsminer firmware: cron for programmatically starting stopping mining process
Whatsminer tool has remote control functions, one of them is (Suspend/Resume) mining, so that is somewhere to start from, also, if you don't use the latest firmware for the M20s you can still access the miner via SSH, so you can run a script to suspend and resume.
https://i.ibb.co/5YB5wPH/Whatsm.png
If that doesn't work out, you can always use something like "Sonoff Basic Smart Remote Control Wifi Switch" that controls a contactor that controls the miner power input, these smart plugs come with their own applications which you can shutdown/turnon from anywhere or set a timer for them, they switch costs about 3-5$ and the contactor is probably in the $15 range, not a very expensive project if the software road turns out to be a little bumpy.
https://i.ibb.co/5YB5wPH/Whatsm.png
If that doesn't work out, you can always use something like "Sonoff Basic Smart Remote Control Wifi Switch" that controls a contactor that controls the miner power input, these smart plugs come with their own applications which you can shutdown/turnon from anywhere or set a timer for them, they switch costs about 3-5$ and the contactor is probably in the $15 range, not a very expensive project if the software road turns out to be a little bumpy.
Whatsminer Tool could have been a solution. Unfortunately they only support a 64Bit Windows application, but my existing miners are getting their "should I mine or should I not mine" information from a 32Bit raspberry pi. If nothing else works I could consider setting up an additional computer for managing Whatsminer devices (hopefully not).
Using an outdated firmware may be another option. I am unsure how well this scales and if there are any security concerns running outdated firmware on a large number of devices. I may be getting some newer Whatsminers (like M30s) down the line as well and they might not be able to run outdated firmware. If the manufactures only stopped closing ssh ports all the time
. As I have already stated, controlling the power input could harm the hardware in the long run. So I am hesitant to try this. Or am I wrong in this regard?
Re: Whatsminer firmware: cron for programmatically starting stopping mining process
It seems there is no cron on Whatsminer I tried to search here even on Google I can't seem to find cron for Whatsminer except for Antminer.
So I guess your only option is to use a device that can automatically shut down and reboot the miner it might be a "programmable outlet timer" that looks like this below
https://i.ibb.co/3F6Hxj4/image.png
But you will need an outlet timer that can support a high amp. Since Whatsminer m20s consumption is around 3360W you will need a 4100w outlet timer or around 20 amp.
So I guess your only option is to use a device that can automatically shut down and reboot the miner it might be a "programmable outlet timer" that looks like this below
https://i.ibb.co/3F6Hxj4/image.png
But you will need an outlet timer that can support a high amp. Since Whatsminer m20s consumption is around 3360W you will need a 4100w outlet timer or around 20 amp.
I tried googling the same thing, that's why I asking here. Appreciated your effort!
Unfortunately this solution will not fit to my requirements, as exchange electricity prices (and thus profitability) are not predictable.
I could pay 3 cents / kWh today at 10am and 12 cents tomorrow at 10am.
I need something that will allow me to run actually code to calculate profitability every time electricity prices change.
Whatsminer firmware cron for programmatically starting stopping mining process
Hey guys,
I am running a bunch of Antminers on BraiinsOS, which has an implementation of cron that allows me to periodically execute custom scripts that will start or stop the mining process depending on the current profitability (I have changing electricity prices with high volatility).
So my question is: Is there a way to reproduce this behaviour using something like cron on a Whatsminer M20s?
Does the Whatsminer firmware even support cron (or some other job scheduler)?
Unfortunately I don't have any device to try this out myself.
Any hints are appreciated!
I am running a bunch of Antminers on BraiinsOS, which has an implementation of cron that allows me to periodically execute custom scripts that will start or stop the mining process depending on the current profitability (I have changing electricity prices with high volatility).
So my question is: Is there a way to reproduce this behaviour using something like cron on a Whatsminer M20s?
Does the Whatsminer firmware even support cron (or some other job scheduler)?
Unfortunately I don't have any device to try this out myself.
Any hints are appreciated!
I've been mining with 9x Antminer S9 inside a Windmill for about a year now using 4G.
Its working pretty good. Haven't really had any problems with shares being transmitted too late or anything.
I can't tell you though how good this scales as I haven't tried with more than 9 devices simultaneously.
I will expand this operation later this year though and if I encounter any problems I will let you know!
Its working pretty good. Haven't really had any problems with shares being transmitted too late or anything.
I can't tell you though how good this scales as I haven't tried with more than 9 devices simultaneously.
I will expand this operation later this year though and if I encounter any problems I will let you know!
UPDATE:
A few weeks ago the retailer send back my defective hashboard.
They put my hashboard into a different S17+. This caused the miner to not even start hashing on any of the boards.
From what I understand this means that my hashboard cannot work together with hashboards from a different S17+.
Therefore I am left with 2 options:
Option 1 will leave me with 2/3 of a new S17+
Option 2 will leave me with 3/3 of a used S17+
I am not really sure whats better, given that 3/3 of a used S17+ may have a shorter lifetime compared to 2/3 of a new S17+.
Any thoughts or recommendations? I am eligible for a used replacement miner until December 2020.
A few weeks ago the retailer send back my defective hashboard.
They put my hashboard into a different S17+. This caused the miner to not even start hashing on any of the boards.
From what I understand this means that my hashboard cannot work together with hashboards from a different S17+.
Therefore I am left with 2 options:
- 1. Do nothing and have my miner run with 2 "new" hashboards
- 2. Send my miner in, and receive a used S17+ as replacement
Option 1 will leave me with 2/3 of a new S17+
Option 2 will leave me with 3/3 of a used S17+
I am not really sure whats better, given that 3/3 of a used S17+ may have a shorter lifetime compared to 2/3 of a new S17+.
Any thoughts or recommendations? I am eligible for a used replacement miner until December 2020.
Thank you for recommendations.
Before I run out of my 180 Day warranty I will send in the faulty hashboard.
I read that a different board my not work with my S17+ as it has a different "board-code"
But sometimes it will work. I will give it a try and report back when I receive the "new" board.
Before I run out of my 180 Day warranty I will send in the faulty hashboard.
I read that a different board my not work with my S17+ as it has a different "board-code"
But sometimes it will work. I will give it a try and report back when I receive the "new" board.
The retailer that sold me the S17+ offered me to send in the defective Hashboard and get a (used but working) Hashboard as replacement.
I think I will try this. Even though I am unsure about potential issues when replacing a Hashboard with another one.
I think I will try this. Even though I am unsure about potential issues when replacing a Hashboard with another one.
⭐ Merited by frodocooper (2)
So if your diagnosis is right, it seems there is a serious hardware error.
I was hoping there wasn't (like some loose cable on the PSU or something).
In that case I suppose sending it in for repair and hoping for the best is the smartest move.
Putting it on the side actually did work for me before. I read about this somewhere in this forum. Tried it again today, this time without success.
The nature of my project does not allow for constant electricity supply. I do have free electricity from time to time, but at other times its rather expensive. The miner is supposed to be installed inside the tower of a windmill.
Thats why I am coding a control software that will tell my miner what to do, based on the current price of electricity (if selling the energy is more profitable I won't mine). By my calculations it will be able to run profitable about 70% of the time though, which should result in profit long term.
Regarding your tips:
1. time saving is not important right now. This is a research project and I need a functioning S17+ to do proper research. Profitability is not relevant (yet).
2. I am running BraiinsOS on all our S9s (12 in total). It has not released yet for S17+ (but will be this year). I am planning to use it for this S17+
I have also tried Awesome Miner Firmware. It has the same issues (missing hashchain).
Setting a low power profile did not resolve this.
I was hoping there wasn't (like some loose cable on the PSU or something).
In that case I suppose sending it in for repair and hoping for the best is the smartest move.
Putting it on the side actually did work for me before. I read about this somewhere in this forum. Tried it again today, this time without success.
The nature of my project does not allow for constant electricity supply. I do have free electricity from time to time, but at other times its rather expensive. The miner is supposed to be installed inside the tower of a windmill.
Thats why I am coding a control software that will tell my miner what to do, based on the current price of electricity (if selling the energy is more profitable I won't mine). By my calculations it will be able to run profitable about 70% of the time though, which should result in profit long term.
Regarding your tips:
1. time saving is not important right now. This is a research project and I need a functioning S17+ to do proper research. Profitability is not relevant (yet).
2. I am running BraiinsOS on all our S9s (12 in total). It has not released yet for S17+ (but will be this year). I am planning to use it for this S17+
I have also tried Awesome Miner Firmware. It has the same issues (missing hashchain).
Setting a low power profile did not resolve this.
I have a brand new S17+ (70TH). From time to time Hashchain 0 is missing.
I found the following entry within my logs:
I have heard that this may be a common problem on the S17 series.
What I don't understand though, is that this problem seems to come and go randomly.
When I turn off the miner and turn it on the next day it can occur.
It can remain like this for a couple of days.
Then without any clear indication why, all three Hashchains are found and working again. (Without any problems).
The problem either appears or disappears only when I turn off the miner and turn it on the next day.
Once it's running (with 2 or 3 boards), it stays like that.
I turn the miner off every night (going to sleep mode first, too cool down).
The past 6 days the miner was started every morning without any problems.
Today the problem occured again. A number of reboots, power disconnects did not solve the problem (like the last times).
All temperatures are within a normal operating range.
Things I have tried:
The thing is I don't really want to send it in for repair, as it seems all parts of the hardware (can) function properly. (and it will take forever).
What may be the cause of this, and is there a potential fix?
I found the following entry within my logs:
Code:
2020-09-10 11:15:27 driver-btm-api.c:1155:check_asic_number: Chain 0 only find 0 asic, will power off hash board 0
I have heard that this may be a common problem on the S17 series.
What I don't understand though, is that this problem seems to come and go randomly.
When I turn off the miner and turn it on the next day it can occur.
It can remain like this for a couple of days.
Then without any clear indication why, all three Hashchains are found and working again. (Without any problems).
The problem either appears or disappears only when I turn off the miner and turn it on the next day.
Once it's running (with 2 or 3 boards), it stays like that.
I turn the miner off every night (going to sleep mode first, too cool down).
The past 6 days the miner was started every morning without any problems.
Today the problem occured again. A number of reboots, power disconnects did not solve the problem (like the last times).
All temperatures are within a normal operating range.
Things I have tried:
- different power cables & outlets
- switching data cables (results in other hashboard number not being found, depending on how i switch them)
- Install Control Board Recovery Image: https://support.bitmain.com/hc/en-us/articles/360033757513-S17-S17Pro-S9-SE-S9k-Z11-control-board-program-recovery-SD-card-flashing-with-customized-PW-
- Reset Miner using web-intercace & hardware reset button
The thing is I don't really want to send it in for repair, as it seems all parts of the hardware (can) function properly. (and it will take forever).
What may be the cause of this, and is there a potential fix?
I have been trying to use my formula to calculate earnings for Bitcoin Cash in the same way.
While my calculations for bitcoin are fairly accurate, my calculations for bitcoin cash seem to be too low.
Is there any difference for calculating earnings in bitcoin cash?
I thought it must be the same formula.
While my calculations for bitcoin are fairly accurate, my calculations for bitcoin cash seem to be too low.
Is there any difference for calculating earnings in bitcoin cash?
I thought it must be the same formula.
Thank you for your replies guys, you have been very helpful.
In case someone else may be interested you can see my updated formula below:
bitcoinPerDay = ((minerHashrate * (blockReward + avgRewardFee) * numberOfSecondsPerDay) / (estimatedNextDifficulty * 2^32)) * poolFeeMultiplier;
For reference:
I have used the API from BTC.com to calculate the average block fee reward of the last 8 mined blocks.
The results of my FPPS calculation are now also pretty close to the results of the mining calculator at https://btc.com/tools/mini-mining-calculator.
The accuracy may be improved by including more than 8 blocks into the average block reward fee calculation. I will be testing this, but for now I am quite happy with the performance.
In case someone else may be interested you can see my updated formula below:
bitcoinPerDay = ((minerHashrate * (blockReward + avgRewardFee) * numberOfSecondsPerDay) / (estimatedNextDifficulty * 2^32)) * poolFeeMultiplier;
For reference:
I have used the API from BTC.com to calculate the average block fee reward of the last 8 mined blocks.
- Documentation: https://btc.com/api-doc#Block
- Endpoint that I have used to get all blocks of a given date: https://chain.api.btc.com/v3/block/date/20200730
The results of my FPPS calculation are now also pretty close to the results of the mining calculator at https://btc.com/tools/mini-mining-calculator.
The accuracy may be improved by including more than 8 blocks into the average block reward fee calculation. I will be testing this, but for now I am quite happy with the performance.
How to calculate bitcoin earnings in FPPS. (Improve my formula)
I am currently working on a formula to calculate my bitcoin earnings for a 24h timeframe on BTC.com pool
The formula I have come up with so far is the following:
bitcoinPerDay = ((minerHashrate * blockReward * numberOfSecondsPerDay) / (difficulty * 2^32)) * poolFeeMultiplier
The results I am getting are pretty good.
They are very close to the results that the mining profit calculator at https://btc.com/tools/mini-mining-calculator is giving me.
At the moment my formula only works for PPS payout. Using the calculator I can see that in FPPS earnings are about 10-15% higher.
I would like to know how I can include the FPPS-Reward/Transaction-Fee into this calculation.
Any hints are appreciated!
The formula I have come up with so far is the following:
bitcoinPerDay = ((minerHashrate * blockReward * numberOfSecondsPerDay) / (difficulty * 2^32)) * poolFeeMultiplier
The results I am getting are pretty good.
They are very close to the results that the mining profit calculator at https://btc.com/tools/mini-mining-calculator is giving me.
At the moment my formula only works for PPS payout. Using the calculator I can see that in FPPS earnings are about 10-15% higher.
I would like to know how I can include the FPPS-Reward/Transaction-Fee into this calculation.
Any hints are appreciated!
Re: FPPS or PPS Pool with instant same day payout (Recommendation)
I can't really seem to find any information about viabtc offering FPPS, only PPS and PPLNS.
Viabtc offers PPS+ which is the exact same as FPPS, ignoring which order of letters makes the most sense, they both mean you get paid per share and miners (you) keep the fees, keep in mind that most pools if I am not mistaken (including Viabtc) pay the fees in PPLNS and not PPS, but the block reward itself is paid in PPS structure if anything remains unclear google or ask.
With about 6 Exa hashes per second, Slush finds +10 blocks a day, so they do more than daily payments.
Some people like myself look for PPS pools, not for the daily payouts alone, internet, and power stability are huge factors in determining what payment method one should use, I have used Slushpools with a few gears I had in a place with stable internet and electricity and I can safely assume it's one of the best if not the best PPLNS pool out there.
Edit: Slush pool uses a modified version of PPLNS, it's not like most other pools, but it's more PPLNS than PPS.
As I will be mining using 4G and varying electricity I cannot go for anything else than pay per share reward systems.
Thank you for your input!
Re: FPPS or PPS Pool with instant same day payout (Recommendation)
This might help: https://miningpoolstats.stream/bitcoin
This reference is very helpful, thank you!
Re: FPPS or PPS Pool with instant same day payout (Recommendation)
I can't really seem to find any information about viabtc offering FPPS, only PPS and PPLNS.
F2pool on the other hand seems like a good alternative. 315TH or more should be doable for me looking forward.
I will take a loot at novablock after the weekend, though I currently would prefer joining a rather large pool.
Furthermore I think I may have misunderstood the 48 hour warning from BTC.com
Their support told me that this only applies when a payout wallet is changed. If this is true I will gladly stay with them (unless anybody can give me good arguments why I shouldn't?)
Thanks to all of you for your further suggestions!
F2pool on the other hand seems like a good alternative. 315TH or more should be doable for me looking forward.
I will take a loot at novablock after the weekend, though I currently would prefer joining a rather large pool.
Furthermore I think I may have misunderstood the 48 hour warning from BTC.com
Their support told me that this only applies when a payout wallet is changed. If this is true I will gladly stay with them (unless anybody can give me good arguments why I shouldn't?)
Thanks to all of you for your further suggestions!
Re: FPPS or PPS Pool with instant same day payout (Recommendation)
Slushpool is no option for me as they do not offer FPPS or PPS.
viabtc may be an option, but the high pool fee of 4% seem a little too high for me. Also online reviews are not too positive.
Anyway thank you for your suggestions!
Anybody else know any alternative that matches my criteria?
viabtc may be an option, but the high pool fee of 4% seem a little too high for me. Also online reviews are not too positive.
Anyway thank you for your suggestions!
Anybody else know any alternative that matches my criteria?
FPPS or PPS Pool with instant same day payout (Recommendation)
I am looking a bitcoin pool with FPPS or PPS reward system that will allow me to receive mined Bitcoins as soon as the minimum payout amount is reached. I want to exchange my mined coins to FIAT as quickly as possible. Low pool fees are obviously very a big plus as well.
I have been mining on BTC.com for a while, but there I need to wait 48hours to receive my mined coins for "security reasons".
Any suggestions are appreciated
I have been mining on BTC.com for a while, but there I need to wait 48hours to receive my mined coins for "security reasons".
Any suggestions are appreciated