ANTMINER S7 is available at bitmaintech.com with 4.86TH/s, 0.25J/GH

[RichBC]

ok, so R15 = Rc1 in the datasheet, and C73, C75 would be Cc1,Cc2.


U2 should be a digital pot made by onsemi, then. In the cat51xx family

And that means that we could have some software control over it.

I spotted the 6k8 as being tied to ground.
I'll do a quick test on one board replacing the 6k8.

I noticed that without the controller plugged, the voltage output at the coil was closer to 8v, can't remember exact value.
And, it went higher to 10.2 with the control board plugged

8V would make sense for the sort of voltage you would expect without the shunting effect of the Digital Pot. So this implies that the PIC is being controlled or at least reset by the controller as opposed to it being completely stand alone as I had assumed?

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[J4bberwock]

ok, so R15 = Rc1 in the datasheet, and C73, C75 would be Cc1,Cc2.


U2 should be a digital pot made by onsemi, then. In the cat51xx family

And that means that we could have some software control over it.

I spotted the 6k8 as being tied to ground.
I'll do a quick test on one board replacing the 6k8.

I noticed that without the controller plugged, the voltage output at the coil was closer to 8v, can't remember exact value.
And, it went higher to 10.2 with the control board plugged

8V would make sense for the sort of voltage you would expect without the shunting effect of the Digital Pot. So this implies that the PIC is being controlled or at least reset by the controller as opposed to it being completely stand alone as I had assumed?

A trick to feed the chips with a voltage so low they won't start (burn the entire board) if the controller doesn't send  a signal to tell he is ready with ethernet connected?

[RichBC]

ok, so R15 = Rc1 in the datasheet, and C73, C75 would be Cc1,Cc2.


U2 should be a digital pot made by onsemi, then. In the cat51xx family

And that means that we could have some software control over it.

I spotted the 6k8 as being tied to ground.
I'll do a quick test on one board replacing the 6k8.

I noticed that without the controller plugged, the voltage output at the coil was closer to 8v, can't remember exact value.
And, it went higher to 10.2 with the control board plugged

8V would make sense for the sort of voltage you would expect without the shunting effect of the Digital Pot. So this implies that the PIC is being controlled or at least reset by the controller as opposed to it being completely stand alone as I had assumed?

A trick to feed the chips with a voltage so low they won't start (burn the entire board) if the controller doesn't send  a signal to tell he is ready with ethernet connected?

Yes I guess it makes it safe. CAT51xx looks spot on against the pinout, not sure how that ties to AG30/ AG6K but guessing it's a 10K pot?

I do not have sufficient info with just the pictures to suss out all the connections to the PIC, in particular any interface to the control board? However several of the connections come to the pads on the board edge probably including programming the PIC. If I had a board I would have a go at reading it in case they have not Read Protected :-)

[klondike_bar]

ok, so R15 = Rc1 in the datasheet, and C73, C75 would be Cc1,Cc2.
U2 should be a digital pot made by onsemi, then. In the cat51xx family
And that means that we could have some software control over it.
I spotted the 6k8 as being tied to ground.
I'll do a quick test on one board replacing the 6k8.
I noticed that without the controller plugged, the voltage output at the coil was closer to 8v, can't remember exact value.
And, it went higher to 10.2 with the control board plugged

8V would make sense for the sort of voltage you would expect without the shunting effect of the Digital Pot. So this implies that the PIC is being controlled or at least reset by the controller as opposed to it being completely stand alone as I had assumed?

A trick to feed the chips with a voltage so low they won't start (burn the entire board) if the controller doesn't send  a signal to tell he is ready with ethernet connected?

Yes I guess it makes it safe. CAT51xx looks spot on against the pinout, not sure how that ties to AG30/ AG6K but guessing it's a 10K pot?
I do not have sufficient info with just the pictures to suss out all the connections to the PIC, in particular any interface to the control board?

Any chance the Batch8 is software controllable? digging around vi SSH (root/admin), found these references:
etc/config/cgminer.conf:    "bitmain-voltage" : "0706"
etc/cgminer.conf.factory:   "bitmain-voltage" : "0725"

seems strange that they are different, yet still necessary to reference. Anyone know what voltage the B8 actually runs at?

[RichBC]

ok, so R15 = Rc1 in the datasheet, and C73, C75 would be Cc1,Cc2.


U2 should be a digital pot made by onsemi, then. In the cat51xx family

And that means that we could have some software control over it.

I spotted the 6k8 as being tied to ground.
I'll do a quick test on one board replacing the 6k8.

I noticed that without the controller plugged, the voltage output at the coil was closer to 8v, can't remember exact value.
And, it went higher to 10.2 with the control board plugged

8V would make sense for the sort of voltage you would expect without the shunting effect of the Digital Pot. So this implies that the PIC is being controlled or at least reset by the controller as opposed to it being completely stand alone as I had assumed?

A trick to feed the chips with a voltage so low they won't start (burn the entire board) if the controller doesn't send  a signal to tell he is ready with ethernet connected?

Yes I guess it makes it safe. CAT51xx looks spot on against the pinout, not sure how that ties to AG30/ AG6K but guessing it's a 10K pot?

I do not have sufficient info with just the pictures to suss out all the connections to the PIC, in particular any interface to the control board? However several of the connections come to the pads on the board edge probably including programming the PIC. If I had a board I would have a go at reading it in case they have not Read Protected :-)

I have done some maths on the Digital Pot, which has 32 positions, in combination with the 6K8 to ground & series 12K. So assuming it is a 50K Pot we get.

        Supply V   Core V
Min       8.63        0.58
Mid       9.17        0.61
Max     11.87        0.79


Which would be a very sensible range of core voltages, so may be correct?

Rich

[J4bberwock]

ok, so R15 = Rc1 in the datasheet, and C73, C75 would be Cc1,Cc2.


U2 should be a digital pot made by onsemi, then. In the cat51xx family

And that means that we could have some software control over it.

I spotted the 6k8 as being tied to ground.
I'll do a quick test on one board replacing the 6k8.

I noticed that without the controller plugged, the voltage output at the coil was closer to 8v, can't remember exact value.
And, it went higher to 10.2 with the control board plugged

8V would make sense for the sort of voltage you would expect without the shunting effect of the Digital Pot. So this implies that the PIC is being controlled or at least reset by the controller as opposed to it being completely stand alone as I had assumed?

A trick to feed the chips with a voltage so low they won't start (burn the entire board) if the controller doesn't send  a signal to tell he is ready with ethernet connected?

Yes I guess it makes it safe. CAT51xx looks spot on against the pinout, not sure how that ties to AG30/ AG6K but guessing it's a 10K pot?

I do not have sufficient info with just the pictures to suss out all the connections to the PIC, in particular any interface to the control board? However several of the connections come to the pads on the board edge probably including programming the PIC. If I had a board I would have a go at reading it in case they have not Read Protected :-)

I have done some maths on the Digital Pot, which has 32 positions, in combination with the 6K8 to ground & series 12K. So assuming it is a 50K Pot we get.

        Supply V   Core V
Min       8.63        0.58
Mid       9.17        0.61
Max     11.87        0.79


Which would be a very sensible range of core voltages, so may be correct?

Rich

Found it:

MCP4017T-503E/L

http://ww1.microchip.com/downloads/en/DeviceDoc/22147a.pdf

[RichBC]

Found it:

MCP4017T-503E/L

http://ww1.microchip.com/downloads/en/DeviceDoc/22147a.pdf

Yes perfect, pinout still matches, except this time we have I2C. 127 Positions, Ram Memory. AGNN Code with NN being only the traceability code so explaining why we have 30 & 6K on the 2 boards. Plus it confirms my 50K. 

[J4bberwock]

ok, so R15 = Rc1 in the datasheet, and C73, C75 would be Cc1,Cc2.
U2 should be a digital pot made by onsemi, then. In the cat51xx family
And that means that we could have some software control over it.
I spotted the 6k8 as being tied to ground.
I'll do a quick test on one board replacing the 6k8.
I noticed that without the controller plugged, the voltage output at the coil was closer to 8v, can't remember exact value.
And, it went higher to 10.2 with the control board plugged

8V would make sense for the sort of voltage you would expect without the shunting effect of the Digital Pot. So this implies that the PIC is being controlled or at least reset by the controller as opposed to it being completely stand alone as I had assumed?

A trick to feed the chips with a voltage so low they won't start (burn the entire board) if the controller doesn't send  a signal to tell he is ready with ethernet connected?

Yes I guess it makes it safe. CAT51xx looks spot on against the pinout, not sure how that ties to AG30/ AG6K but guessing it's a 10K pot?
I do not have sufficient info with just the pictures to suss out all the connections to the PIC, in particular any interface to the control board?

Any chance the Batch8 is software controllable? digging around vi SSH (root/admin), found these references:
etc/config/cgminer.conf:    "bitmain-voltage" : "0706"
etc/cgminer.conf.factory:   "bitmain-voltage" : "0725"

seems strange that they are different, yet still necessary to reference. Anyone know what voltage the B8 actually runs at?

currenty playing with the values to see if they do something

[RichBC]

Any chance the Batch8 is software controllable? digging around vi SSH (root/admin), found these references:
etc/config/cgminer.conf:    "bitmain-voltage" : "0706"
etc/cgminer.conf.factory:   "bitmain-voltage" : "0725"

seems strange that they are different, yet still necessary to reference. Anyone know what voltage the B8 actually runs at?

currenty playing with the values to see if they do something

It would be great if they do something.... but my gut feeling is that those numbers look very familiar from all sorts of conf files in other miners that do nothing?

That said with the microcontroller & the Digital pot all the hardware we need is there and someone told be that the S4 used a PIC to control the VRM in that, so fingers crossed...

[J4bberwock]

Any chance the Batch8 is software controllable? digging around vi SSH (root/admin), found these references:
etc/config/cgminer.conf:    "bitmain-voltage" : "0706"
etc/cgminer.conf.factory:   "bitmain-voltage" : "0725"

seems strange that they are different, yet still necessary to reference. Anyone know what voltage the B8 actually runs at?

currenty playing with the values to see if they do something

It would be great if they do something.... but my gut feeling is that those numbers look very familiar from all sorts of conf files in other miners that do nothing?

They don't seem to do anything, but why put a digital pot adjustable over I2C with a PIC just to control it if you just set a fixed value?
Some people with better Antminer firmware knowledge may be able to unlock it if it's locked somehow.

[RichBC]

They don't seem to do anything, but why put a digital pot adjustable over I2C with a PIC just to control it if you just set a fixed value?
Some people with better Antminer firmware knowledge may be able to unlock it if it's locked somehow.

It will depend on there being a connection from the PIC to the Controller as well as the code. Could just be that each board has an individual value set as part of the final testing, but you are right if that was the case they could just have used an EE based Pot and no PIC  

[klondike_bar]

Any chance the Batch8 is software controllable? digging around vi SSH (root/admin), found these references:
etc/config/cgminer.conf:    "bitmain-voltage" : "0706"
etc/cgminer.conf.factory:   "bitmain-voltage" : "0725"

seems strange that they are different, yet still necessary to reference. Anyone know what voltage the B8 actually runs at?

currenty playing with the values to see if they do something

It would be great if they do something.... but my gut feeling is that those numbers look very familiar from all sorts of conf files in other miners that do nothing?

They don't seem to do anything, but why put a digital pot adjustable over I2C with a PIC just to control it if you just set a fixed value?
Some people with better Antminer firmware knowledge may be able to unlock it if it's locked somehow.

I considered this method:
change the cgminer.conf.factory to 0706 and then do a factory reset - perhaps it will force the voltage change?

[opentoe]

Does S7 have a voltage setting in the ui?

[dmwardjr]

Does S7 have a voltage setting in the ui?

No, I haven't seen one.  Hence, the J4bberwock IBM 2000 BB x 2 with B/O Board and voltage regulator setup was engineered and designed to assist with that issue.

[Rabinovitch]

Does S7 have a voltage setting in the ui?

I guess I saw it before upgrade to December's FW...

[bittalc1]

Guys how long does it take Bitmain to answer ticket? My s7 arrive tommorow and i still dont have new invoice that i asked and also no CE Certificate document. Anyone has this CE certificate fot S7? I was searching google but i only found for s5.

[Cyper_BLC]

Any chance the Batch8 is software controllable? digging around vi SSH (root/admin), found these references:
etc/config/cgminer.conf:    "bitmain-voltage" : "0706"
etc/cgminer.conf.factory:   "bitmain-voltage" : "0725"

seems strange that they are different, yet still necessary to reference. Anyone know what voltage the B8 actually runs at?

currenty playing with the values to see if they do something

It would be great if they do something.... but my gut feeling is that those numbers look very familiar from all sorts of conf files in other miners that do nothing?

They don't seem to do anything, but why put a digital pot adjustable over I2C with a PIC just to control it if you just set a fixed value?
Some people with better Antminer firmware knowledge may be able to unlock it if it's locked somehow.

First of all congratulations J4bberwock for the found that messy MCP4017T-503E and 12F1572.
i can explain that setup with simple way :
this specific pic has 10bit ADC and 5bit DAC. so, it reads a voltage and calculate a proper value of resistor then compare a setted one then send a Power good signal to Controller and also communicate with Digital pot for adjusting. if setted value can be handle with Dpot sobiet, if not pic immidiately handle the control for voltage raise/fall safety. Finally this is closed loop voltage controller circuit for safety not for adjusting.

Now, you will ask that to me or yourself, why they make another closed loop cycle like that (1.lm27402 has that). i think when some bm1385 chips fall(O to X) then inner voltage will raise, also think opposite, if some chips are greedy they decrease a inner voltage. This point is says to us, bm1385 is not working stable with alone.

[VirosaGITS]

Does S7 have a voltage setting in the ui?

I guess I saw it before upgrade to December's FW...

It can have it, but it does not do anything. A design that allow software control of volt would be great, but this is just like the S3. Unlike the S4 which the software disabled the software control for unknown reason, which you were able to re enable with custom firmware.

That UI setting just set the value in the config file, you can instead simply write the value directly in the config file, but its not going to do anything either.

[elokk]

Does anyone have a S7 coupon for sale??

[edonkey]

Where are you pointing all that hash?

Usually between westhash and f2pool - whichever one is higher payout at the moment.
I've written scripts to manage the miners and change pools according to highest payout.
Sometimes I'll swing them at a PPLNS pool if I think it's due to have a good day, but mostly leave it auto to PPS pools.

How often does westhash win?  It seems like nice/westhash have been below bitcoin payments most of time unless I have missed something.

There are some times that westhash has significant spikes.  The spikes are not overly frequent.  They seem to occur when new SHA coins are being mined.
Also during difficulty adjustments - like today/yesterday - Westhash seems to hold on to the older rate for several hours as it adjusts down.  My connection to Westhash is better than f2pool as well.
My overall hashrate is generally 2-3% higher on Westhash,  so I factor in these connectivity variants into the script calculations.  Probably mining westhash 30-40%.

I agree that the most recent Nicehash spike was due to the insane difficulty increase. It probably takes a few hours for the outstanding orders to catch up with an 18% blow (like the last one).

I still have nicehash set as my first mining pool, but with a very large profitability setting as the password option. This way if there's ever a high value alt coin again that's worth taking advantage of (can you say "paycoin") my miners will switch. Otherwise I don't want them to switch for a short term artificial gap created by a large difficulty increase.

Otherwise my main pool is Kano. I'm done with high latency pools, incompetent pool managers, and pools that frequently mine worthless zero transaction blocks.