Author

Topic: Bitmain's Released Antminer S9, World's First 16nm Miner Ready to Order - page 205. (Read 531173 times)

legendary
Activity: 1050
Merit: 1000
Okay I'll google for the Nov 19th firmware, unless someone has a link? Smiley

It balances the noise out a bit? that's great.

It amazes me how I have to look at it to see if it's even running one minute, and the next minute yell to hear myself lol
hero member
Activity: 770
Merit: 523
Looks like it is the hashboard that is the autotune piece. I received a replacement board and installed it on an older s9 12.93 that had the autotune software
already installed and the new board autotuned but the others did not. Thought I was losing it.
Nov 19 firmware looks good.
E
full member
Activity: 234
Merit: 100
for those of you wandering if this is the auto tune version.  This pic seems to be a stock 14TH model.  so it will be set to hash at 650M frequency by the firmware.


Has anyone tried the firmware from 11-19? I'm giving it a shot on one machine right now. Curious how it is working for others?

Fan speed is much better handled for me - slight variations in speed, gently ramped, instead of the bang-bang controller in the previous autotune FWs.

Seeing much lower reported temps (~10C lower) but I haven't dug into whether that is just a cosmetic change or a change in setpoint for target temp.

Hashrate is good - 13.904avg over 3025 hours on a batch 1 set to 650MHz (theoretical speed 14.004):


Nice of you to jump in, and still be following the thread.
but please, can we discuss the elephant in the room? wtf is with these fans
They idle so low one minute, and the next minute my neighbors can hear them.
I have no issue with noisy miners, but this seems like it's just unrequired noise.
One minute they blast at 110% the next they are cruising at 25%. than boom back up again.
If they idled Higher, at 60% maybe? they would need to spike as often, and this would help with the noise greatly.

takagari - This is what I posted about re: the 19 Nov firmware. For me, this firmware stops the fan cycling and replaces it with much subtler changes in speed. Higher average speed over all, but barely perceptable speed changes.

It's a big improvement on my S9, which is a Batch 1 / 14TH/s as BitmainWarranty suggested.
legendary
Activity: 1050
Merit: 1000

ya no one seems to read my posts very much lol. i agree the auto tune feature isnt much of a feature. it runs boards too hard and i personally would want to control the speed. idc so much about raising it but i would at least like the aility to lower the speed but with the new firmware your unable to. my post was just to give some sort of solution to those that wanted to solve 1 of the 2 issues which is fan speed control. if it helps folks great if it doesnt great lol. at least this way they can try to get a handle on the high temps when running these auto tune miners.

I read your post, just didn't fully understand what you were getting at, It also seems like it may not be the best option, If we set them at one point and it at some point needs more, no way to get that.
A software solution that won't let them go lower then a certain speed, but still ramp up if needed would be ideal.
But I will look into those controllers.
Did they do a fine job of tricking the s9 into thinking it still had control?
As I understand it, the thing shuts down if it thinks the fans stopped running.
sr. member
Activity: 308
Merit: 250
don't piss me off or else you will see the tigress
Solar panel can be used as long as it can supply you steady 1600W range to be plenty for 1 S9.
but steady power feed is needed to keep the miner up and running.


Can anybody tell me if the Antminer S9 can run on solar power .Huh Smiley .

http://www.tatapowersolar.com/#

i can install and let my miner run on it.

i can ask the company to let me know how many hours of power supply it will provide.

That way i can get free electricity and don't have to worry about the power costs.

Ok i will enquire it with the company , to ask if i can get steady power supply in here , but it seems the best option since i cannot get free electricity.

Here is the calculator result for 2000 sq feet area.

Result - save upto 1,800* units per month.

I can make it directly connect to the miner so that power is supplied only to the miner.


Not directly if you want 24 hour power

1)Panels to inverter to psu to miner.  needs a grid tie in to skip batteries

2) Panels to charger to battery to inverter to psu to miner.

3) Panels to  dc voltage regulator to  miner is most direct but a bad idea as you could get dc flux up and down with clouds or rain.

this is a link to the setup I am a partner in.

https://bitcointalksearch.org/topic/solar-array-starting-to-look-good-1369207

we use method 1.


Method one is ok thanks i will research and see and after buying post here for setup help.

Needed
-------------------------------------------------------------------------------------------------------------------------------
1 Grid tie-in Inverter.

1 Psu.

1 Antminer S9 .

I think this is the correct one.  

http://www.tatapowersolar.com/Solution-For-Consumers/rooftop/tata_solar_rooftop_3000

I can link in extra power to my other Equipments as well.

Thanks.
-------------------------------------------------------------------------------------------------------------------------------
The solar panel company itself supplies grid-tie in inverter.

Can connect upto one Antminer S9.

http://www.tatapowersolar.com/Solution-For-Consumers/rooftop/tata_solar_rooftop_3000

- Solar Module: 3000 Wp
- Grid-tie Inverter: 3 KVA (Single phase)
- AC Distribution box
- Cable and other accessories

------------------------------------------------------------------------------------------------------------------------------------------

Components
Solar Module: 3000 Wp
Grid-tie Inverter: 3 KVA (Single phase)
AC Distribution box
Cable and other accessories


-------------------------------------------------------------------------------------------------------------------------------
- Solar Module: 3000 Wp
- Grid-tie Inverter: 3 KVA (Single phase)
- AC Distribution box
- Cable and other accessories
Features
Solar Modules

IEC certified modules with 25 years warranty
Reliability under extreme weather conditions, certified to withstand snow loads of up to 5400 Pa
Greater energy generated due to positive tolerance  
Inverter

IP-65, environmental protection rating, can withstand extreme weather conditions
High yield output with maximum efficiency of over 97%
Wide input voltage range
Compact Design with easy installation
In-built anti-islanding feature
Module Mounting Structure

GI coated corrosion free structures designed to withstand 150kmph wind speed  
Benefits
Hedge against increasing grid prices which have increased by 40% in past 5 years
Savings in electricity bill for 25 long years
Expandable – Multiple grid tie inverters may be networked together for increased net metering capacity or future system growth
Maintenance free system
Accelerated depreciation benefit - Your rooftop investment is eligible for accelerated depreciation of 80% in first year of commissioning i.e. 30% times 80% of project cost is tax-savings in first year
25 years warranty for the modules and 5 years on inverter and balance of system.

Manual

Rooftop area required - Dynamo - G3000.

Grid-tie solar - Inverter - 300 - 500 sq-ft

Solar modules - 12 nos * 250wp

Units generated annually - 4500.

Tata Solar Dynamo™ G 5000- Solar Module: 5000 Wp
- Grid-tie Inverter: 5 KVA (single phase)
- AC Distribution box
- Cable and other accessories

-------------------------------------------------------------------------------------------------------------------------------
This one is good too if you want to connect 3 units.

http://www.tatapowersolar.com/Solution-For-Consumers/rooftop/tata_solar_rooftop_5000

- Solar Module: 5000 Wp
- Grid-tie Inverter: 5 KVA (single phase)
- AC Distribution box
- Cable and other accessories
Features
Solar Modules

IEC certified modules with 25 years warranty
Reliability under extreme weather conditions, certified to withstand snow loads of up to 5400 Pa
Greater energy generated due to positive tolerance 
Inverter

IP-65, environmental protection rating, can withstand extreme weather conditions
High yield output with maximum efficiency of over 97%
Wide input voltage range
Compact Design with easy installation
In-built anti-islanding feature

Module Mounting Structure

GI coated corrosion free structures designed to withstand 150kmph wind speed 
Benefits
Hedge against increasing grid prices which have increased by 40% in past 5 years
Savings in electricity bill for 25 long years
Expandable – Multiple grid tie inverters may be networked together for increased net metering capacity or future system growth
Maintenance free system
Accelerated depreciation benefit - Your rooftop investment is eligible for accelerated depreciation of 80% in first year of commissioning i.e. 30% times 80% of project cost is tax-savings in first year
25 years warranty for the modules and 5 years on inverter and balance of system.

-------------------------------------------------------------------------------------------------------------------------------









sr. member
Activity: 387
Merit: 254
the "elephant" for home-miners is the noise, and especially the strong modulation of the fans yes, and yes it is annoying. Before setting the miners in the actual racks where the noise is no problem, we always test them in the office for a while to make sure they run fine. Right now my ears would be ringing if I wouldnt be using earplugs. and they are still annoying.

Nice of you to jump in, and still be following the thread.
but please, can we discuss the elephant in the room? wtf is with these fans
They idle so low one minute, and the next minute my neighbors can hear them.
I have no issue with noisy miners, but this seems like it's just unrequired noise.
One minute they blast at 110% the next they are cruising at 25%. than boom back up again.
If they idled Higher, at 60% maybe? they would need to spike as often, and this would help with the noise greatly.
If you read the thread, people even gave a solution to have them running more constantly. I.e. the followoing
there is a way to controll the fan speed. im sure the firmware can too they just dont want to allow that but the way im talking about requires an external device that connects to the pwm wire that sends the signal needed to spin the fan up and or down. i got a bunch of them a while ago to control the fan speed on delta fans that have 4 wires (12v, gnd, tac, pwm) and they work great. since pwm fans need the 12v power to be steady all that is needed is to hook the pwn wire from the fan connector and connect it to the little module. the module isnt made to handle tons of power through it that delta type fans use but since the 12v and gnd are still on the main controller that wont be an issue. i tested it with the pre autotune s9's and was hoping to use it with s7's when it got colder but it turns out it wasnt that loud so it wasnt needed. i can test it with the auto tune firmware s9's too but im pretty sure it will work just the same. you turn the pot on the device to raise and lower the fan speed. one would be needed for each fan and maybe 1 can run both fans im not sure. i tested it on 1 fan at a time though.


http://www.ebay.com/itm/Mini-Fan-Controller-Use-on-4pin-PWM-Fans-Only-/251310564631?hash=item3a8346e517%3Ag%3AD8QAAOxyPc5R8pd&nma=true&si=xc7ix74cLY6XzIvXO35N657fd3U%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

that link is super old but thats the speed controller i used with delta server fans. it only shows a pic of the top side with the pot but the underside has the components that control the fan speed. they have other versions similar with a plastic shroud over it and should work the same way. i went with these because it was a simple design that attached to the fan itself instead of having a box hanging there. im not responsible for any wrong hookups though and even though its pretty simple to do make sure your removing and hooking up the right pin....


But the cause for the so-called "elephant" is a much bigger problem with the auto-tune S9s. And that is the extremely high range of frequency distribution over the 3 cards/boards/blades in a single S9, at least for the B22-11TH/s models we have. This in turn leads to miners breaking down rather soon (in my case one miner was bye bye after less than 24h), leading to repair/delivery costs (even in this case) and downtime of the miner. So, honestly, what is worse, a strong modulation of the fan speed ==> noise levels, or that Bitmain is selling faulty products to the its customers, which break down sooner than later.

There many possible causes for the bad frequency distribution, be it the faulty automatic-tuning firmware of Bitmain of the cards which leads to this distribution, or be it the greediness to use underperforming chips on the boards. Nonetheless, it is a problem introduced by Bitmain by selling faulty machines (be it firmware or hardware) to the customers (be it on purpose or by accident).

ya no one seems to read my posts very much lol. i agree the auto tune feature isnt much of a feature. it runs boards too hard and i personally would want to control the speed. idc so much about raising it but i would at least like the aility to lower the speed but with the new firmware your unable to. my post was just to give some sort of solution to those that wanted to solve 1 of the 2 issues which is fan speed control. if it helps folks great if it doesnt great lol. at least this way they can try to get a handle on the high temps when running these auto tune miners.
member
Activity: 167
Merit: 15
the "elephant" for home-miners is the noise, and especially the strong modulation of the fans yes, and yes it is annoying. Before setting the miners in the actual racks where the noise is no problem, we always test them in the office for a while to make sure they run fine. Right now my ears would be ringing if I wouldnt be using earplugs. and they are still annoying.

Nice of you to jump in, and still be following the thread.
but please, can we discuss the elephant in the room? wtf is with these fans
They idle so low one minute, and the next minute my neighbors can hear them.
I have no issue with noisy miners, but this seems like it's just unrequired noise.
One minute they blast at 110% the next they are cruising at 25%. than boom back up again.
If they idled Higher, at 60% maybe? they would need to spike as often, and this would help with the noise greatly.
If you read the thread, people even gave a solution to have them running more constantly. I.e. the followoing
there is a way to controll the fan speed. im sure the firmware can too they just dont want to allow that but the way im talking about requires an external device that connects to the pwm wire that sends the signal needed to spin the fan up and or down. i got a bunch of them a while ago to control the fan speed on delta fans that have 4 wires (12v, gnd, tac, pwm) and they work great. since pwm fans need the 12v power to be steady all that is needed is to hook the pwn wire from the fan connector and connect it to the little module. the module isnt made to handle tons of power through it that delta type fans use but since the 12v and gnd are still on the main controller that wont be an issue. i tested it with the pre autotune s9's and was hoping to use it with s7's when it got colder but it turns out it wasnt that loud so it wasnt needed. i can test it with the auto tune firmware s9's too but im pretty sure it will work just the same. you turn the pot on the device to raise and lower the fan speed. one would be needed for each fan and maybe 1 can run both fans im not sure. i tested it on 1 fan at a time though.

http://www.ebay.com/itm/Mini-Fan-Controller-Use-on-4pin-PWM-Fans-Only-/251310564631?hash=item3a8346e517%3Ag%3AD8QAAOxyPc5R8pd&nma=true&si=xc7ix74cLY6XzIvXO35N657fd3U%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

that link is super old but thats the speed controller i used with delta server fans. it only shows a pic of the top side with the pot but the underside has the components that control the fan speed. they have other versions similar with a plastic shroud over it and should work the same way. i went with these because it was a simple design that attached to the fan itself instead of having a box hanging there. im not responsible for any wrong hookups though and even though its pretty simple to do make sure your removing and hooking up the right pin....


But the cause for the so-called "elephant" is a much bigger problem with the auto-tune S9s. And that is the extremely high range of frequency distribution over the 3 cards/boards/blades in a single S9, at least for the B22-11TH/s models we have. This in turn leads to miners breaking down rather soon (in my case one miner was bye bye after less than 24h), leading to repair/delivery costs (even in this case) and downtime of the miner. So, honestly, what is worse, a strong modulation of the fan speed ==> noise levels, or that Bitmain is selling faulty products to the its customers, which break down sooner than later.

There many possible causes for the bad frequency distribution, be it the faulty automatic-tuning firmware of Bitmain of the cards which leads to this distribution, or be it the greediness to use underperforming chips on the boards. Nonetheless, it is a problem introduced by Bitmain by selling faulty machines (be it firmware or hardware) to the customers (be it on purpose or by accident).
sr. member
Activity: 308
Merit: 250
don't piss me off or else you will see the tigress
Solar panel can be used as long as it can supply you steady 1600W range to be plenty for 1 S9.
but steady power feed is needed to keep the miner up and running.


Can anybody tell me if the Antminer S9 can run on solar power .Huh Smiley .

http://www.tatapowersolar.com/#

i can install and let my miner run on it.

i can ask the company to let me know how many hours of power supply it will provide.

That way i can get free electricity and don't have to worry about the power costs.

Ok i will enquire it with the company , to ask if i can get steady power supply in here , but it seems the best option since i cannot get free electricity.

Here is the calculator result for 2000 sq feet area.

Result - save upto 1,800* units per month.

I can make it directly connect to the miner so that power is supplied only to the miner.


Not directly.

Panels to inverter to psu to miner.  needs a grid tie in to skip batteries

or panels to charger to battery to inverter to psu to miner.

ok then thanks i will research a bit more and also ask the company then.

can look up a manual or you people can help me set it up will take a few months.

Antminer S9 mines on DC right , ongrid solar power supply units supply power in AC so i will need an inverter.

Here's a link for ongrid system's.

http://www.tatapowersolar.com/Solution-For-Consumers/Solar_Rooftop_System.

Offgrid max is 1200 w What is the difference between ongrid and offgrid btw.??

Thanks a lot then.


The ROI on these with cheap power is sometimes mind boggeling.
You will never ROI with solar, so only do this for your home, NOT for mining.

I am not looking for roi if i take up form filling  for now i am gonna take data entry first and then practice and take up form filling in a few months, i can buy the Antminer S9 in 2-3 months after i take up form filling job.

It pays around 730 dollars a month.

Can check it's ok even it if mines 0.01 btc a day.

Can somebody say the exact value it will mine per day,  if ran for 12 hours and 24 hours respectively.

Should let it take a rest inbetween 12 - 24 hours continous mining will get repair it off soon.

Next difficulty retarget occurs at block 441503.0 (eta 8.7 days): 2.63908638996e+11 / +2.1% [est.]

Difficulty Factor   
2.58522748405e+11
Hash Rate   
14.0

Exchange Rate   
746.86
($/BTC) [user]
BTC / Block   12.50000000   
Calculate

This Difficulty
Coins   Dollars
per Day   0.01361716 BTC   $10.17
per Week   0.09532012 BTC   $71.19
per Month   0.41447231 BTC   $309.55
this diff (est)   0.11810802 BTC   $88.21

Next Difficulty [estimated]
Coins   Dollars
per Day   0.01333926 BTC   $9.96
per Week   0.09337481 BTC   $69.74
per Month   0.40601369 BTC   $303.24

difficulty may change in a future time.
legendary
Activity: 1050
Merit: 1000
Solar panel can be used as long as it can supply you steady 1600W range to be plenty for 1 S9.
but steady power feed is needed to keep the miner up and running.


Can anybody tell me if the Antminer S9 can run on solar power .Huh Smiley .

http://www.tatapowersolar.com/#

i can install and let my miner run on it.

i can ask the company to let me know how many hours of power supply it will provide.

That way i can get free electricity and don't have to worry about the power costs.

Ok i will enquire it with the company , to ask if i can get steady power supply in here , but it seems the best option since i cannot get free electricity.

Here is the calculator result for 2000 sq feet area.

Result - save upto 1,800* units per month.

I can make it directly connect to the miner so that power is supplied only to the miner.


Not directly.

Panels to inverter to psu to miner.  needs a grid tie in to skip batteries

or panels to charger to battery to inverter to psu to miner.

ok then thanks i will research a bit more and also ask the company then.

can look up a manual or you people can help me set it up will take a few months.

Antminer S9 mines on DC right , ongrid solar power supply units supply power in AC so i will need an inverter.

Here's a link for ongrid system's.

http://www.tatapowersolar.com/Solution-For-Consumers/Solar_Rooftop_System.

Offgrid max is 1200 w What is the difference between ongrid and offgrid btw.??

Thanks a lot then.


The ROI on these with cheap power is sometimes mind boggeling.
You will never ROI with solar, so only do this for your home, NOT for mining.
legendary
Activity: 1050
Merit: 1000
for those of you wandering if this is the auto tune version.  This pic seems to be a stock 14TH model.  so it will be set to hash at 650M frequency by the firmware.


Has anyone tried the firmware from 11-19? I'm giving it a shot on one machine right now. Curious how it is working for others?

Fan speed is much better handled for me - slight variations in speed, gently ramped, instead of the bang-bang controller in the previous autotune FWs.

Seeing much lower reported temps (~10C lower) but I haven't dug into whether that is just a cosmetic change or a change in setpoint for target temp.

Hashrate is good - 13.904avg over 3025 hours on a batch 1 set to 650MHz (theoretical speed 14.004):


Nice of you to jump in, and still be following the thread.
but please, can we discuss the elephant in the room? wtf is with these fans
They idle so low one minute, and the next minute my neighbors can hear them.
I have no issue with noisy miners, but this seems like it's just unrequired noise.
One minute they blast at 110% the next they are cruising at 25%. than boom back up again.
If they idled Higher, at 60% maybe? they would need to spike as often, and this would help with the noise greatly.
sr. member
Activity: 308
Merit: 250
don't piss me off or else you will see the tigress
Solar panel can be used as long as it can supply you steady 1600W range to be plenty for 1 S9.
but steady power feed is needed to keep the miner up and running.


Can anybody tell me if the Antminer S9 can run on solar power .Huh Smiley .

http://www.tatapowersolar.com/#

i can install and let my miner run on it.

i can ask the company to let me know how many hours of power supply it will provide.

That way i can get free electricity and don't have to worry about the power costs.

Ok i will enquire it with the company , to ask if i can get steady power supply in here , but it seems the best option since i cannot get free electricity.

Here is the calculator result for 2000 sq feet area.

Result - save upto 1,800* units per month.

I can make it directly connect to the miner so that power is supplied only to the miner.


Not directly.

Panels to inverter to psu to miner.  needs a grid tie in to skip batteries

or panels to charger to battery to inverter to psu to miner.

ok then thanks i will research a bit more and also ask the company then.

can look up a manual or you people can help me set it up will take a few months.

Antminer S9 mines on DC right , ongrid solar power supply units supply power in AC so i will need an inverter.

Here's a link for ongrid system's.

http://www.tatapowersolar.com/Solution-For-Consumers/Solar_Rooftop_System.

Offgrid max is 1200 w What is the difference between ongrid and offgrid btw.??

Thanks a lot then.
legendary
Activity: 4256
Merit: 8551
'The right to privacy matters'
Solar panel can be used as long as it can supply you steady 1600W range to be plenty for 1 S9.
but steady power feed is needed to keep the miner up and running.


Can anybody tell me if the Antminer S9 can run on solar power .Huh Smiley .

http://www.tatapowersolar.com/#

i can install and let my miner run on it.

i can ask the company to let me know how many hours of power supply it will provide.

That way i can get free electricity and don't have to worry about the power costs.

Ok i will enquire it with the company , to ask if i can get steady power supply in here , but it seems the best option since i cannot get free electricity.

Here is the calculator result for 2000 sq feet area.

Result - save upto 1,800* units per month.

I can make it directly connect to the miner so that power is supplied only to the miner.


Not directly if you want 24 hour power

1)Panels to inverter to psu to miner.  needs a grid tie in to skip batteries

2) Panels to charger to battery to inverter to psu to miner.

3) Panels to  dc voltage regulator to  miner is most direct but a bad idea as you could get dc flux up and down with clouds or rain.

this is a link to the setup I am a partner in.

https://bitcointalksearch.org/topic/solar-array-starting-to-look-good-1369207

we use method 1.

sr. member
Activity: 308
Merit: 250
don't piss me off or else you will see the tigress
Solar panel can be used as long as it can supply you steady 1600W range to be plenty for 1 S9.
but steady power feed is needed to keep the miner up and running.


Can anybody tell me if the Antminer S9 can run on solar power .Huh Smiley .

http://www.tatapowersolar.com/#

i can install and let my miner run on it.

i can ask the company to let me know how many hours of power supply it will provide.

That way i can get free electricity and don't have to worry about the power costs.

Ok i will enquire it with the company , to ask if i can get steady power supply in here , but it seems the best option since i cannot get free electricity.

Here is the calculator result for 2000 sq feet area.

Result - save upto 1,800* units per month.

I can make it directly connect to the miner so that power is supplied only to the miner.
newbie
Activity: 5
Merit: 0
the support told me to raise my ambiance temps. i will report back once they hit around 95-100 degrees.

donator
Activity: 792
Merit: 510
for those of you wandering if this is the auto tune version.  This pic seems to be a stock 14TH model.  so it will be set to hash at 650M frequency by the firmware.


Has anyone tried the firmware from 11-19? I'm giving it a shot on one machine right now. Curious how it is working for others?

Fan speed is much better handled for me - slight variations in speed, gently ramped, instead of the bang-bang controller in the previous autotune FWs.

Seeing much lower reported temps (~10C lower) but I haven't dug into whether that is just a cosmetic change or a change in setpoint for target temp.

Hashrate is good - 13.904avg over 3025 hours on a batch 1 set to 650MHz (theoretical speed 14.004):



donator
Activity: 792
Merit: 510
Solar panel can be used as long as it can supply you steady 1600W range to be plenty for 1 S9.
but steady power feed is needed to keep the miner up and running.


Can anybody tell me if the Antminer S9 can run on solar power .Huh Smiley .

http://www.tatapowersolar.com/#

i can install and let my miner run on it.

i can ask the company to let me know how many hours of power supply it will provide.

That way i can get free electricity and don't have to worry about the power costs.
sr. member
Activity: 308
Merit: 250
don't piss me off or else you will see the tigress
Can anybody tell me if the Antminer S9 can run on solar power .Huh Smiley .

http://www.tatapowersolar.com/#

i can install and let my miner run on it.

i can ask the company to let me know how many hours of power supply it will provide.

That way i can get free electricity and don't have to worry about the power costs.
sr. member
Activity: 387
Merit: 254
there is a way to controll the fan speed. im sure the firmware can too they just dont want to allow that but the way im talking about requires an external device that connects to the pwm wire that sends the signal needed to spin the fan up and or down. i got a bunch of them a while ago to control the fan speed on delta fans that have 4 wires (12v, gnd, tac, pwm) and they work great. since pwm fans need the 12v power to be steady all that is needed is to hook the pwn wire from the fan connector and connect it to the little module. the module isnt made to handle tons of power through it that delta type fans use but since the 12v and gnd are still on the main controller that wont be an issue. i tested it with the pre autotune s9's and was hoping to use it with s7's when it got colder but it turns out it wasnt that loud so it wasnt needed. i can test it with the auto tune firmware s9's too but im pretty sure it will work just the same. you turn the pot on the device to raise and lower the fan speed. one would be needed for each fan and maybe 1 can run both fans im not sure. i tested it on 1 fan at a time though.

http://www.ebay.com/itm/Mini-Fan-Controller-Use-on-4pin-PWM-Fans-Only-/251310564631?hash=item3a8346e517%3Ag%3AD8QAAOxyPc5R8pd&nma=true&si=xc7ix74cLY6XzIvXO35N657fd3U%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

that link is super old but thats the speed controller i used with delta server fans. it only shows a pic of the top side with the pot but the underside has the components that control the fan speed. they have other versions similar with a plastic shroud over it and should work the same way. i went with these because it was a simple design that attached to the fan itself instead of having a box hanging there. im not responsible for any wrong hookups though and even though its pretty simple to do make sure your removing and hooking up the right pin....
legendary
Activity: 1736
Merit: 1006
I have 7x s9, they were working perfectly, avg temps are 80-87, about a week ago one of them just stopped hashing and after unplugging from power and plugging in again it started mining again with no issues, today three of them did the same.
Is there any chance to see the logs why they turned off ?
anyone ?

if the s9 is like the s7 and s5 there are no logs saved.. once its powered down they are cleared..


So I suppose there is no other way to know why they keep shutting down. I'm sure that it isn't temp issue. What if internet drops and comes back after one hour ? Is there a chance that some miners can reconnect and others not ? I'm getting internet from quite far distance via 5GHz and there is a chance of network drop downs, is it possible ?

Yes absolutely the internet dropping could cause that.  Sometimes when the internet drops for me I lose a couple of boards but not all from a miner so it runs at 1/3 speed.  Very slight power fluctuations (brown outs) cause a similar thing.  Sometimes a miner might go through fine and keep hashing while the one right next to it goes to all X's or -'s on the chips in the GUI.  Sometimes one miner will lose a board or two and another will be fine.  Usually a soft reset will bring them back when these things happen.

you could make a script to run that would reboot cgminer if the hash rate drops down.


edit, here wrote this real quick.. save it in a text called hashcheck.sh in the /config folder and make it 0744 permission.

it makes a hashcheck.txt file that will give statistics..

to run ssh and type, /config/hashcheck.sh &

if you power off the miner you will have to run it again.. to stop it run, killall -9 hashcheck.sh

this will reboot cgminer every 6 hours or if your miner drops below 10th

nothing in this script should be harmful, but keep an eye on it when you first run it.. i dont have a s9 to check.. so use at your own risk.



Code:
#!/bin/sh
minhash=1000000 # 10000.00 ghs without the decimal
restart=21600 # 6 hours
echo $(date) "| hashcheck monitor started. reboot every $restart seconds or if lower than $minhash "  > /config/hashcheck.txt
restartcount=0


while true
do
T=$(bmminer-api devs | grep 'ture] =>' | cut -c 21-)
E=$(bmminer-api summary | grep "^ *\[Elapsed\]" | cut -d'>' -f2 | tr -d ' ')
S=$(bmminer-api | grep 'GHS 5s] => ' | cut -c 16- | tr -d '.')


if [ $E -gt $restart ]; then
restartcount=$((restartcount+1))
restarthash=$(bmminer-api | grep 'GHS 5s] => ' | cut -c 16-)
restarttime=$(date)
elapsedtime=$E
echo $(date) "| miner scheduled restart " $restartcount " times: " $restarthash " GH/s $T DEG , at " $restarttime for $elapsedtime seconds >> /config/hashcheck.txt
   killall -s 9 bmminer
  sleep 5
  /etc/init.d/bmminer.sh
sleep 300
fi

T=$(bmminer-api devs | grep 'ture] =>' | cut -c 21-)
E=$(bmminer-api summary | grep "^ *\[Elapsed\]" | cut -d'>' -f2 | tr -d ' ')
S=$(bmminer-api | grep 'GHS 5s] => ' | cut -c 16- | tr -d '.')
HASH=$(bmminer-api | grep 'GHS 5s] => ' | cut -c 16-)

if [ $E -gt "600" ] || [ $E == "" ]; then
if [ $S -lt $minhash ] || [ $S == "" ]; then
echo $(date) "| rechecking in 120s" low hash : $HASH GH/s $T DEG >> /config/hashcheck.txt
sleep 120
S=$(bmminer-api | grep 'GHS 5s] => ' | cut -c 16- | tr -d '.')
E=$(bmminer-api summary | grep "^ *\[Elapsed\]" | cut -d'>' -f2 | tr -d ' ')
T=$(bmminer-api devs | grep 'ture] =>' | cut -c 21-)
HASH=$(bmminer-api | grep 'GHS 5s] => ' | cut -c 16-)
     if [ $S -lt $minhash ] || [$S == "" ]; then
restartcount=$((restartcount+1))
restarthash=$(bmminer-api | grep 'GHS 5s] => ' | cut -c 16-)
restarttime=$(date)
elapsedtime=$E
echo $(date) "| failed low hash: " $restarthash GH/s $T DEG >> /config/hashcheck.txt
killall -9 bmminer
sleep 5
/etc/init.d/bmminer.sh
echo $(date) "| miner restarted " $restartcount " times: " $restarthash "GH/s $T DEG , at " $restarttime for $elapsedtime seconds  >> /config/hashcheck.txt
else
echo $(date) "| recovered: " $HASH GH/s $E seconds $T DEG >> /config/hashcheck.txt
fi
else
echo $(date) "| normal operation: " $HASH GH/s $E seconds $T DEG >> /config/hashcheck.txt
fi
fi

sleep 300
done



legendary
Activity: 1726
Merit: 1018
I have 7x s9, they were working perfectly, avg temps are 80-87, about a week ago one of them just stopped hashing and after unplugging from power and plugging in again it started mining again with no issues, today three of them did the same.
Is there any chance to see the logs why they turned off ?
anyone ?

if the s9 is like the s7 and s5 there are no logs saved.. once its powered down they are cleared..


So I suppose there is no other way to know why they keep shutting down. I'm sure that it isn't temp issue. What if internet drops and comes back after one hour ? Is there a chance that some miners can reconnect and others not ? I'm getting internet from quite far distance via 5GHz and there is a chance of network drop downs, is it possible ?

Yes absolutely the internet dropping could cause that.  Sometimes when the internet drops for me I lose a couple of boards but not all from a miner so it runs at 1/3 speed.  Very slight power fluctuations (brown outs) cause a similar thing.  Sometimes a miner might go through fine and keep hashing while the one right next to it goes to all X's or -'s on the chips in the GUI.  Sometimes one miner will lose a board or two and another will be fine.  Usually a soft reset will bring them back when these things happen.
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