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Author Topic: GekkoScience 2Pac BM1384 Stickminer Official Support Thread  (Read 143653 times)
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cableiso
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December 17, 2017, 08:04:54 PM
 #1221

Yep, that's the via - thanks!

I did need to island the copper between USB and the top FET since I think the controller's PGOOD pullup goes to this copper area.  But it worked just as you said - jumping USB 5V over to the top of the 2.2 Ohm allows me to feed a (slightly) higher voltage to the input FET and it doesn't touch the controller, CP2102, LED or LDO.  Many thanks, I like having a split supply so I can monitor the 1384 current directly.



You mentioned breakout boards...  Got any spares lying around, or would you consider sharing the 1384 footprint?  I'd like to make up a couple single chip breakout boards to try to hack out some auto-tune code.  It would be open source, of course.
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sidehack
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December 17, 2017, 08:17:21 PM
 #1222

The PGOOD is NC. Like I said, nothing on the buck ties to any 5V line that doesn't come through the 2R2.

BM1384 datasheet is, as far as I know, still accessible on Bitmain's website.

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December 17, 2017, 08:28:04 PM
 #1223

Hmm, isn't there a trace sneaking under the 1k from the USB 5v copper island?  That's what I was trying to keep connected to USB 5v.

And yes, I have the datasheet - I just hate drawing footprints! Smiley
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December 17, 2017, 09:20:30 PM
 #1224

I have no idea what you're looking at. On older prototypes of the 2Pac and the original Compac the EN line was snaked between 1K and 0.1uF to the 5V island, but on all the 2Pac production versions it's internally routed to below the 2R2. Again, nothing buck-side interacts with 5V directly. PGood is not connected to anything, never has been on any version of any stick I've yet made, production or prototype. I'm at the shop now and just verified that against the layout files.

If you drill out that via under the 5V pin, the only things left touching 5V are the high-side FET and input caps, through the visible surface trace and an identical inner-layer trace interconnected with nine vias.

I generate footprints manually in a text editor; it's not too bad.

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December 18, 2017, 01:27:56 AM
 #1225

How many bitcoins can I roughly mine per month if I get 5 of these?
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December 18, 2017, 04:17:10 AM
 #1226

How many bitcoins can I roughly mine per month if I get 5 of these?
How fast can a car go? How much is enough? What is the airspeed velocity of an unladen swallow?
It all depends on your system resources, your internet service, your geographical location to the node, or pool you are using, Your voltage and clock settings, How often, and for how long you are planning on running your mining devices, and the difficulty level of bitcoin. A lot of factors to consider. Stock hashrate is what 15gh/h per device I think so around 75gh? you can google bitcoin mining calculator and enter in 75gh to get a rough idea I guess. Hope that helps!
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December 18, 2017, 04:56:49 PM
 #1227

How many bitcoins can I roughly mine per month if I get 5 of these?
How fast can a car go? How much is enough? What is the airspeed velocity of an unladen swallow?
It all depends on your system resources, your internet service, your geographical location to the node, or pool you are using, Your voltage and clock settings, How often, and for how long you are planning on running your mining devices, and the difficulty level of bitcoin. A lot of factors to consider. Stock hashrate is what 15gh/h per device I think so around 75gh? you can google bitcoin mining calculator and enter in 75gh to get a rough idea I guess. Hope that helps!

You forgot to specify whether the swallow was African or European...

I love lamp
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December 18, 2017, 05:18:43 PM
 #1228

Aye, but African swallows are non-migratory.

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December 19, 2017, 07:35:46 PM
 #1229

Has anybody had any experience with their raspberry pi crashing/freezing after a few hours of mining? I have tried everything that comes to mind and nothing seems to work.  Here is what I have tried thus far.

- added the slug debug line to the boot command.
- tried ethernet connection and not wifi.
- tried using 3 different power plugs for hubs+pi simultaneously. Power isnt the issue.
- re-installed cgminer and the drivers.


No matter what I do, the pi seems to just crash after a few hours. The screen will freeze in place and be unresponsive until I power it off and back on.I am even running the 2pacs on stock freq. Does my LCD touchscreen have something to do with it? any help would be greatly appreciated.
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December 19, 2017, 08:02:24 PM
 #1230

Has anybody had any experience with their raspberry pi crashing/freezing after a few hours of mining? I have tried everything that comes to mind and nothing seems to work.  Here is what I have tried thus far.

- added the slug debug line to the boot command.
- tried ethernet connection and not wifi.
- tried using 3 different power plugs for hubs+pi simultaneously. Power isnt the issue.
- re-installed cgminer and the drivers.


No matter what I do, the pi seems to just crash after a few hours. The screen will freeze in place and be unresponsive until I power it off and back on.I am even running the 2pacs on stock freq. Does my LCD touchscreen have something to do with it? any help would be greatly appreciated.

Have you tried running it under windows?
What are you running on the raspi? (Software) I am planning on doing Minera on the raspi here is a video I found on setting it up: https://www.youtube.com/watch?v=UQndxAfk-hM
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December 19, 2017, 08:51:19 PM
 #1231

I have raspian as my OS and CGMiner.  I haven't tried running them under windows. I have seen the minera video, but I don't think that will stop my pi from freezing/crashing.
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December 19, 2017, 09:20:57 PM
 #1232

I have raspian as my OS and CGMiner.  I haven't tried running them under windows. I have seen the minera video, but I don't think that will stop my pi from freezing/crashing.

I could be many things causing the freeze/crash, have you tried a different SD card?
zachj00
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December 19, 2017, 09:55:32 PM
 #1233

So I went back and discovered I never actually saved the slub debug line in the cmd.txt file.  Hopefully, this will fix all the errors ive been having.
zachj00
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December 20, 2017, 12:39:06 AM
 #1234

And.... It didnt work. anybody have any suggestions?
sidehack
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December 20, 2017, 01:42:41 AM
 #1235

Did you look into any of the things people were talking about three pages or so ago?

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December 20, 2017, 02:19:03 AM
 #1236

Yes, and no luck.  Before my last crash, the CPU usage percentage at the top right of the pi had spiked way up and remained in the high 20s while running cgminer. I'm pretty sure that has something to do with it.
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December 20, 2017, 02:30:35 AM
 #1237

Could it be the way I launch cgminer?

usually, I just type this into terminal   sudo cgminer

instead, should I type   sudo /home/pi/cgminer/cgminer?
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December 20, 2017, 05:05:04 PM
 #1238

Thad shouldn´t be the cause of this issue.
I have/had the same issue. I´m just testing the cmd.txt line myself and no freezes so far.
But my freezes where after hours either when I started. But after running and restarting a few days, the issue occured always a little bit later. Last time before I added the line to the cmd.txt it ran about a week without freezes.
I read something about RAM usage regarding to this issue. Maybe that´s a thing you can monitor.

gartor
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December 20, 2017, 06:25:33 PM
 #1239

I'm running a GS2 and a NF2 on the same powered usb 2 hub with peripherals and memory. Followed advise printed by sidehack and -cv for cgminer. Raspi B kept halting, but I put the temp widget on the screen and added fans. A Vornado clip on, and a 2nd clip on, above, pushing, and a desk fan pulling, and now the temp doesn't go up to the 58 plus range anymore, stays in the low 40s( F ).  Has not locked up for several days.  Note: not USB fans.  I was ready to buy a Vornado desk fan to push, but things seem real stable.
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December 20, 2017, 11:05:34 PM
 #1240

are you doing this to keep your pi cool, or is it for your 2pacs? My artic breeze USB fan is doing a wonderful job keeping my miners cool, but I have no fan on my pi.  Could it be that my pi is overheating?
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