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[JBT]

Got my two new 16boards connected power, link down to up and plugged in usb at the down board, windoze now can see one extra 8boards aka 16. the special cgminer can see the extra boards but it's not hashing? i obviously missing something, clock init settings?


ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together

ok it shows 5 8boards and two 16boards but --drillbit-options Eight:int:52:2:950,Av16:int:750:1:950 does not seem to work it blinks then quits

ed. the only i can get these boards to work is by splitting them up into two batch files like this:cgminer --drillbit-options int:750:1:950 --usb drb:6 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:7 -o http://stratum.bitcoin.cz:3333 -u user0 -p password  and the other batch using --usb drb:1 to drb:5   

[kabopar]

Got my two new 16boards connected power, link down to up and plugged in usb at the down board, windoze now can see one extra 8boards aka 16. the special cgminer can see the extra boards but it's not hashing? i obviously missing something, clock init settings?


ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together

ok it shows 5 8boards and two 16boards but --drillbit-options Eight:int:52:2:950,Av16:int:750:1:950 does not seem to work it blinks then quits

ed. the only i can get these boards to work is by splitting them up into two batch files like this:cgminer --drillbit-options int:750:1:950 --usb drb:6 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:7 -o http://stratum.bitcoin.cz:3333 -u user0 -p password  and the other batch using --usb drb:1 to drb:5   

These boards are not fully 'hot plug'.  Unless you can bring power to all of your Av16 boards at once, checkout the suggestion at http://drillbitsystem.com/forum/index.php?topic=309.15 about a power-up sequence to get all Av16 boards running.  I have now 4 Av16 boards and a single drillbit8 board.  I run the drillbit8 board on a separate instance of cgminer 4.0.1 and the Av16 boards on an instance of cgminer 4.2.1.  The Av16 boards are detected as a single entity with a "DRB 0: A 4..." designation meaning that it is a group of 4 boards. The Av16 are now running with a setting of "Av16:int:750:1:1000" (in cgminer.conf), getting about 87.5 GH/s, with a temp of 51-52 deg C.

Cheers

[JBT]

Got my two new 16boards connected power, link down to up and plugged in usb at the down board, windoze now can see one extra 8boards aka 16. the special cgminer can see the extra boards but it's not hashing? i obviously missing something, clock init settings?


ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together

ok it shows 5 8boards and two 16boards but --drillbit-options Eight:int:52:2:950,Av16:int:750:1:950 does not seem to work it blinks then quits

ed. the only i can get these boards to work is by splitting them up into two batch files like this:cgminer --drillbit-options int:750:1:950 --usb drb:6 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:7 -o http://stratum.bitcoin.cz:3333 -u user0 -p password  and the other batch using --usb drb:1 to drb:5   

These boards are not fully 'hot plug'.  Unless you can bring power to all of your Av16 boards at once, checkout the suggestion at http://drillbitsystem.com/forum/index.php?topic=309.15 about a power-up sequence to get all Av16 boards running.  I have now 4 Av16 boards and a single drillbit8 board.  I run the drillbit8 board on a separate instance of cgminer 4.0.1 and the Av16 boards on an instance of cgminer 4.2.1.  The Av16 boards are detected as a single entity with a "DRB 0: A 4..." designation meaning that it is a group of 4 boards. The Av16 are now running with a setting of "Av16:int:750:1:1000" (in cgminer.conf), getting about 87.5 GH/s, with a temp of 51-52 deg C.

Cheers

doing the same , how would i specify to only use drb 1 to 5 for the one and 6 and 7 (the 16boards) the other
the 8boards
--drillbit-options int:52:2:950 -o http://stratum.bitcoin.cz:3333 -u user3 -p password --usb drb:1 --usb drb:2 --usb drb:3 --usb drb:4
--usb drb:5

the two av16
cgminer --drillbit-options int:750:1:1000 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:6 --usb drb:7
funny thing is if the 8boards stops the other wants to take over and pics up the 8baords even when i only specified drb:6 and 7

[hephaist0s]

Got my two boards, they look great, but both heatsinks immediately fell off. I thought that maybe they just shook loose during shipping, so I pressed them back on as firmly as I could -- but one of them fell off with a clunk just as I got hashing a few minutes later. Now I'm debating whether to drill some holes or just run them heatsink-side-up.

It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?

[kabopar]

Got my two new 16boards connected power, link down to up and plugged in usb at the down board, windoze now can see one extra 8boards aka 16. the special cgminer can see the extra boards but it's not hashing? i obviously missing something, clock init settings?


ed. drivers drivers drivers and int:500:1:900 with --drillbit-options int:52:2:950. ok the 8 and 16 dont want work together

ok it shows 5 8boards and two 16boards but --drillbit-options Eight:int:52:2:950,Av16:int:750:1:950 does not seem to work it blinks then quits

ed. the only i can get these boards to work is by splitting them up into two batch files like this:cgminer --drillbit-options int:750:1:950 --usb drb:6 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:7 -o http://stratum.bitcoin.cz:3333 -u user0 -p password  and the other batch using --usb drb:1 to drb:5   

These boards are not fully 'hot plug'.  Unless you can bring power to all of your Av16 boards at once, checkout the suggestion at http://drillbitsystem.com/forum/index.php?topic=309.15 about a power-up sequence to get all Av16 boards running.  I have now 4 Av16 boards and a single drillbit8 board.  I run the drillbit8 board on a separate instance of cgminer 4.0.1 and the Av16 boards on an instance of cgminer 4.2.1.  The Av16 boards are detected as a single entity with a "DRB 0: A 4..." designation meaning that it is a group of 4 boards. The Av16 are now running with a setting of "Av16:int:750:1:1000" (in cgminer.conf), getting about 87.5 GH/s, with a temp of 51-52 deg C.

Cheers

doing the same , how would i specify to only use drb 1 to 5 for the one and 6 and 7 (the 16boards) the other
the 8boards
--drillbit-options int:52:2:950 -o http://stratum.bitcoin.cz:3333 -u user3 -p password --usb drb:1 --usb drb:2 --usb drb:3 --usb drb:4
--usb drb:5

the two av16
cgminer --drillbit-options int:750:1:1000 -o http://stratum.bitcoin.cz:3333 -u user -p password --usb drb:6 --usb drb:7
funny thing is if the 8boards stops the other wants to take over and pics up the 8baords even when i only specified drb:6 and 7

For the Eight board, my cgminer.conf file uses
"drillbit-options" : "Eight:int:53:2:950",
"usb" : ":1"

(the "usb": part tells it to look just for 1 device)

For the Av16 boards the conf file has
"drillbit-options" : "Av16:int:750:1:1000",
"usb" : ":1"

(again, cgminer sees this 'bunch' as a single USB device).
The 'Eight' or 'Av16' tells this instance which device type to apply this for.  I just happen to use different versions of cgminer for these 2 (currently running 4 instances of cgminer and 2 of bfgminer on the same pc to control a garden variety of miners including Drillbit Thumbs (bf), Drillbit AvThumbs, Drillbit Eight, Drillbit Av16's, Blue/Red Fury, Antminer U1/2's...

Cheers

[kabopar]

Got my two boards, they look great, but both heatsinks immediately fell off. I thought that maybe they just shook loose during shipping, so I pressed them back on as firmly as I could -- but one of them fell off with a clunk just as I got hashing a few minutes later. Now I'm debating whether to drill some holes or just run them heatsink-side-up.

It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?

Despite earlier photos showing the heatsink below, Barntech later suggested to position the board with the heatsink on top, to avoid the 'separation' that you described.  I started with the heatsink below, later turned the boards so it is on top on my 4 Av16 boards.  No separation so far on mine.  Drilling holes might be risky, as you could bridge internal ground and power layers.  The first and easy step is to turn the boards so the heatsinks face up.  You may want to consult Barntech (check out the drillbit forum at http://drillbitsystem.com/forum/, you may want to register there so that you may post your issue) about any adhesive or way of re-attaching the heatsinks to ensure good thermal transfer and avoid pre-mature thermal death of your ASICS.

Cheers

[hephaist0s]

Got my two boards, they look great, but both heatsinks immediately fell off. I thought that maybe they just shook loose during shipping, so I pressed them back on as firmly as I could -- but one of them fell off with a clunk just as I got hashing a few minutes later. Now I'm debating whether to drill some holes or just run them heatsink-side-up.

It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?

Despite earlier photos showing the heatsink below, Barntech later suggested to position the board with the heatsink on top, to avoid the 'separation' that you described.  I started with the heatsink below, later turned the boards so it is on top on my 4 Av16 boards.  No separation so far on mine.  Drilling holes might be risky, as you could bridge internal ground and power layers.  The first and easy step is to turn the boards so the heatsinks face up.  You may want to consult Barntech (check out the drillbit forum at http://drillbitsystem.com/forum/, you may want to register there so that you may post your issue) about any adhesive or way of re-attaching the heatsinks to ensure good thermal transfer and avoid pre-mature thermal death of your ASICS.

Cheers

Thank you. I missed that info before. The boards are running great, I'm happy to say.

[JBT]

For the Eight board, my cgminer.conf file uses
"drillbit-options" : "Eight:int:53:2:950",
"usb" : ":1"

(the "usb": part tells it to look just for 1 device)

For the Av16 boards the conf file has
"drillbit-options" : "Av16:int:750:1:1000",
"usb" : ":1"

(again, cgminer sees this 'bunch' as a single USB device).
The 'Eight' or 'Av16' tells this instance which device type to apply this for.  I just happen to use different versions of cgminer for these 2 (currently running 4 instances of cgminer and 2 of bfgminer on the same pc to control a garden variety of miners including Drillbit Thumbs (bf), Drillbit AvThumbs, Drillbit Eight, Drillbit Av16's, Blue/Red Fury, Antminer U1/2's...

Cheers

running something close to that, what setting would i need to ignore any and all other devices?

ed. --drillbit-options Eight:int:52:2:950,Av16:int:725:1:100 seems to work for the 5 8baords and the two av16 :-)

[JBT]

Got my two boards, they look great, but both heatsinks immediately fell off. I thought that maybe they just shook loose during shipping, so I pressed them back on as firmly as I could -- but one of them fell off with a clunk just as I got hashing a few minutes later. Now I'm debating whether to drill some holes or just run them heatsink-side-up.

It's not a huge problem, but was there a reason you didn't screw the heatsinks in place?

Despite earlier photos showing the heatsink below, Barntech later suggested to position the board with the heatsink on top, to avoid the 'separation' that you described.  I started with the heatsink below, later turned the boards so it is on top on my 4 Av16 boards.  No separation so far on mine.  Drilling holes might be risky, as you could bridge internal ground and power layers.  The first and easy step is to turn the boards so the heatsinks face up.  You may want to consult Barntech (check out the drillbit forum at http://drillbitsystem.com/forum/, you may want to register there so that you may post your issue) about any adhesive or way of re-attaching the heatsinks to ensure good thermal transfer and avoid pre-mature thermal death of your ASICS.

Cheers

which would better then heatsink down or up? two av16 running at 42C and 48C with heatsink down and two 120mm fans on either side

ed. both heatsink fell off just now
edd. now heatsinks up running 750:1:1000  43 45C each and hw like 0.9% so heatsinks up they all go

[JBT]

one thing i did notice when the heatsinks fell off is that there are holes in the board, this would fit nicely for heatsinks if someone would make a water based heatsink.......

[JBT]

one thing i did notice when the heatsinks fell off is that there are holes in the board, this would fit nicely for heatsinks if someone would make a water based heatsink.......

i'll just build the whole thing into a mini fridge

[JBT]

demmit one 8board not coming on anymore, look like that power thing came off the board. soldered back on no life...... is this right forum for repairs and info?

ed. nevermind chip just fried itself. 

[timegrinder]

Drilling holes might be risky, as you could bridge internal ground and power layers.

There's no drilling to be done in the PCB, there's holes pre-drilled and pre-finished in the PCB itself, so you'd only need to align some markings on the heat sink and drill through the heat sink itself.

Then we could add some pressure to the connection with some bolts etc. (making sure of course that the thread on the bolt has a diameter smaller than the hole in the board)

I've actually found the top of the chips get very hot as well so have been considering fashioning some kind of double sided heat sink either with an external clamp around the sides (so the sinks sandwich the board) or a second sink with another drilled set of holes in it.

There is however a transistor that sits in the 4*4 chip grid that sits higher than the other chips, so some consideration for that would need to be taken into account before a secondary heat sink was applied.

As a side note - regarding the separation issues I've noticed that the issue is likely from a lack of cleaning of the PCB from the factory before the heat sink was applied (I'm assuming the manufacturers did the heat sinking too) there was a fine black dust between the heat transfer pad and the PCB which was found after a heat sink came off and I cleaned the board with some alcohol.

[kabopar]

Drilling holes might be risky, as you could bridge internal ground and power layers.

There's no drilling to be done in the PCB, there's holes pre-drilled and pre-finished in the PCB itself, so you'd only need to align some markings on the heat sink and drill through the heat sink itself.

Then we could add some pressure to the connection with some bolts etc. (making sure of course that the thread on the bolt has a diameter smaller than the hole in the board)

I've actually found the top of the chips get very hot as well so have been considering fashioning some kind of double sided heat sink either with an external clamp around the sides (so the sinks sandwich the board) or a second sink with another drilled set of holes in it.

There is however a transistor that sits in the 4*4 chip grid that sits higher than the other chips, so some consideration for that would need to be taken into account before a secondary heat sink was applied.

As a side note - regarding the separation issues I've noticed that the issue is likely from a lack of cleaning of the PCB from the factory before the heat sink was applied (I'm assuming the manufacturers did the heat sinking too) there was a fine black dust between the heat transfer pad and the PCB which was found after a heat sink came off and I cleaned the board with some alcohol.

If you are using existing holes, then the risk is minimal.  I have 4 of these Av16 Drillbit boards, which are stacked with the heatsink on top.  So far I did not have any separation issues and they are working quite reliably.  These are significantly less efficient than the older bitfury based boards and require plenty of cooling.  I'm using 12 cm fans in push-pull from the sides, blowing air through the fins and also some old HDD cooler dual fans on top of each heatsink.  This keeps it at a reasonable temp of about 47 deg C.  Overcloocked to Av16:int:750:1:1000 they produce about 88 GH/s altogether.

Cheers

[JBT]

If you are using existing holes, then the risk is minimal.  I have 4 of these Av16 Drillbit boards, which are stacked with the heatsink on top.  So far I did not have any separation issues and they are working quite reliably.  These are significantly less efficient than the older bitfury based boards and require plenty of cooling.  I'm using 12 cm fans in push-pull from the sides, blowing air through the fins and also some old HDD cooler dual fans on top of each heatsink.  This keeps it at a reasonable temp of about 47 deg C.  Overcloocked to Av16:int:750:1:1000 they produce about 88 GH/s altogether.

Cheers

yeah these new av16 work very well.

[JBT]

have draw up rough plans for water based heatsinks for both side of the av16 board, sourcing a aluminum maker cnc, in talks with manufacturer

[kabopar]

have draw up rough plans for water based heatsinks for both side of the av16 board, sourcing a aluminum maker cnc, in talks with manufacturer

Unless you want to solve your particular cooling situation, you'd probably be better rewarded if you target something like the Antminer S1 or S2 with water cooling.  As I see it, the main bottleneck in the near future will be efficiency in GH/Watt, as with rise of difficulty mining might stop being profitable if the electricity cost becomes greater than BTC reward. Unfortunately the Av16 boards are far from being efficiency champions (unlike the earlier Bitfury based Drillbit devices.  I'll keep running mine while they can, but sadly just like BE's, they are approaching the 'departure lounge'....

Cheers

[JBT]

have draw up rough plans for water based heatsinks for both side of the av16 board, sourcing a aluminum maker cnc, in talks with manufacturer

Unless you want to solve your particular cooling situation, you'd probably be better rewarded if you target something like the Antminer S1 or S2 with water cooling.  As I see it, the main bottleneck in the near future will be efficiency in GH/Watt, as with rise of difficulty mining might stop being profitable if the electricity cost becomes greater than BTC reward. Unfortunately the Av16 boards are far from being efficiency champions (unlike the earlier Bitfury based Drillbit devices.  I'll keep running mine while they can, but sadly just like BE's, they are approaching the 'departure lounge'....

Cheers

you have a valid point, the av16 vs the 8boards usage power?

[JBT]

anyone have specs antminer vs av16?

[kabopar]

anyone have specs antminer vs av16?

av16 is supposed to draw 4A at conservative settings and upto 6.5A at maximum safe settings per http://drillbitsystem.com/forum/index.php?topic=309.0.
I estimate that a single board takes about 5-6A when doing 22 GH/sec.  At 5A it will be 5*12=60W, so 22/60=0.367 GH/W. (probably need to add a few Watts for the essential fans).
The Antminer S1 at default settings does 180 GH and takes 360W at the wall, which makes 0.5 GH/W.  This suggests that the S1 is slightly more efficient, however both are significantly less efficient than the S2 or Spondoolies SP10.

Cheers