[GUIDE] GridSeed 5-Chip USB, Blade & Black Miner Support/Tuning

[suchmoon]

I'm selling 4 pin molex power connectors for gridseeds.  Multiple types available, see here:

https://bitcointalk.org/index.php?topic=511770.msg5650838#msg5650838

What's the wire gauge in the 10-connector? You are dangerously close to 6A on the standard molex connector with 10 units as it is, and that splitter cable looks awfully thin. I wouldn't connect more than 3-4 miners via molex, and I wouldn't use this kind of splitter unless it is rated for 10+ amps. Is that black electric tape on the joints? Can't see well, the pictures are too blurry.

[DPoS]

not sure but doubt someone pays that much for a spliced and taped up solution   

[usao]

I'm selling 4 pin molex power connectors for gridseeds.  Multiple types available, see here:

https://bitcointalk.org/index.php?topic=511770.msg5650838#msg5650838

What's the wire gauge in the 10-connector? You are dangerously close to 6A on the standard molex connector with 10 units as it is, and that splitter cable looks awfully thin. I wouldn't connect more than 3-4 miners via molex, and I wouldn't use this kind of splitter unless it is rated for 10+ amps. Is that black electric tape on the joints? Can't see well, the pictures are too blurry.

From what I understand, each GS node runs about 20W which is about 1.7A at 12V. Trying to hook-up 10 of them will draw about 17A.
Probably best to use an ATX supply, take the PCIe connectors and wire those up to the power plugs such that you won't draw more than the rated amps for each 12V rail in the PSU.
I even think someone makes a PCIe female to the 2.5mm (or 2.1mm) barrel plugs. Haven't found the vendor yet though I would be interested in that if anyone has a reference...

[volder]

If you want to run CGminer on Windows, this is your "Rasperry Pi" like Windows solution. These work great. I have 5 of them throughout my house for one reason or another. Not as cheap as RasPi, but not terrible either and very low power.

http://www.amazon.com/gp/product/B00B7I8HZ4?&linkCode=wsw&tag=dv07-20

[suchmoon]

I'm selling 4 pin molex power connectors for gridseeds.  Multiple types available, see here:

https://bitcointalk.org/index.php?topic=511770.msg5650838#msg5650838

What's the wire gauge in the 10-connector? You are dangerously close to 6A on the standard molex connector with 10 units as it is, and that splitter cable looks awfully thin. I wouldn't connect more than 3-4 miners via molex, and I wouldn't use this kind of splitter unless it is rated for 10+ amps. Is that black electric tape on the joints? Can't see well, the pictures are too blurry.

From what I understand, each GS node runs about 20W which is about 1.7A at 12V. Trying to hook-up 10 of them will draw about 17A.
Probably best to use an ATX supply, take the PCIe connectors and wire those up to the power plugs such that you won't draw more than the rated amps for each 12V rail in the PSU.
I even think someone makes a PCIe female to the 2.5mm (or 2.1mm) barrel plugs. Haven't found the vendor yet though I would be interested in that if anyone has a reference...

In scrypt-only mode it is 7W, so about 0.6A. There is a user "cablez" on these forums, who used to make custom PCIe-to-barrel wiring, but he seems to be overwhelmed with orders and is looking for more manufacturing capacity. I'm planning to make some myself, but I'm terrible at soldering, so will be using something with screws, like these: http://www.amazon.com/dp/B0060L5NM8

[joeventura]

Sorry for cross posting but....


Somethings not right,
First I'm trying to use Scrypt guild.

without the --scrypt in the command line it does not recognize the shares

Then when I have 30 Gridseeds going it never sees more than 5Mh when I think I am sending 10Mh

Using this command line:
Bfgminer -S gridseed:all --set-device gridseed:clock=850 --scrypt -o stratum+tcp://stratum.scryptguild.com:3333 -u joeventura123 -p anything

again note without the --scrypt  it does not see a single share.

Ideas?





Anyone now where I can find cgminer windows binary that works with gridseeds? (5 chip)

[wolfey2014]

Sorry for cross posting but....


Somethings not right,
First I'm trying to use Scrypt guild.

without the --scrypt in the command line it does not recognize the shares

Then when I have 30 Gridseeds going it never sees more than 5Mh when I think I am sending 10Mh

Using this command line:
Bfgminer -S gridseed:all --set-device gridseed:clock=850 --scrypt -o stratum+tcp://stratum.scryptguild.com:3333 -u joeventura123 -p anything

again note without the --scrypt  it does not see a single share.

Ideas?





Anyone now where I can find cgminer windows binary that works with gridseeds? (5 chip)

scrypt guild requires the --scrypt command for cgminer and bfdminer
cpuminer does not require it...
w

[joeventura]

Sorry for cross posting but....


Somethings not right,
First I'm trying to use Scrypt guild.

without the --scrypt in the command line it does not recognize the shares

Then when I have 30 Gridseeds going it never sees more than 5Mh when I think I am sending 10Mh

Using this command line:
Bfgminer -S gridseed:all --set-device gridseed:clock=850 --scrypt -o stratum+tcp://stratum.scryptguild.com:3333 -u joeventura123 -p anything

again note without the --scrypt  it does not see a single share.

Ideas?




Anyone know where I can find cgminer windows binary that works with gridseeds? (5 chip)

scrypt guild requires the --scrypt command for cgminer and bfdminer
cpuminer does not require it...
w

Yeah thanks, sort of figured that out.

know where I can find cgminer windows binary that works with gridseeds?

Any idea why scryptguild does not see full shares?

I am sending 10Mh right?

[vabchgent]

Sorry for cross posting but....


Somethings not right,
First I'm trying to use Scrypt guild.

without the --scrypt in the command line it does not recognize the shares

Then when I have 30 Gridseeds going it never sees more than 5Mh when I think I am sending 10Mh

Using this command line:
Bfgminer -S gridseed:all --set-device gridseed:clock=850 --scrypt -o stratum+tcp://stratum.scryptguild.com:3333 -u joeventura123 -p anything

again note without the --scrypt  it does not see a single share.

Ideas?




Anyone know where I can find cgminer windows binary that works with gridseeds? (5 chip)

scrypt guild requires the --scrypt command for cgminer and bfdminer
cpuminer does not require it...
w

Yeah thanks, sort of figured that out.

know where I can find cgminer windows binary that works with gridseeds?

Any idea why scryptguild does not see full shares?

I am sending 10Mh right?

Joe you can start here
http://cryptomining-blog.com/1254-how-to-mine-both-btc-and-ltc-on-gridseed-5-chip-gc3355-asic/

[wolfey2014]

Sorry for cross posting but....


Somethings not right,
First I'm trying to use Scrypt guild.

without the --scrypt in the command line it does not recognize the shares

Then when I have 30 Gridseeds going it never sees more than 5Mh when I think I am sending 10Mh

Using this command line:
Bfgminer -S gridseed:all --set-device gridseed:clock=850 --scrypt -o stratum+tcp://stratum.scryptguild.com:3333 -u joeventura123 -p anything

again note without the --scrypt  it does not see a single share.

Ideas?




Anyone know where I can find cgminer windows binary that works with gridseeds? (5 chip)

scrypt guild requires the --scrypt command for cgminer and bfdminer
cpuminer does not require it...
w

Yeah thanks, sort of figured that out.

know where I can find cgminer windows binary that works with gridseeds?

Any idea why scryptguild does not see full shares?

I am sending 10Mh right?

cpuminer

[suchmoon]

Do you know of any hubs that keep all the ports on a single level?  I already purchased and installed a 2nd RaspPi and have 20 miners on each, but in the future it might be helpful for others that want to control more from a single unit (which I bet it can since 20 miners only results in around 10% utilization).

-Eric

Probably too expensive but here is a 49 port designed for continuous enterprise use:

How about 2 of these?:  http://www.monoprice.com/Product?c_id=103&cp_id=10307&cs_id=1030702&p_id=6436&seq=1&format=2

One for each of the Raspberry Pi's 2 ports?  We should be able to conceivably connect up to 48 miners per RPi...  Anyone had any experience with these or know its internal topology?

-Eric

Monoprice 24-port hub has 7 ports at the first level, 3 of those connect to 3 internal 7-port hubs. The total comes to 25 ports (4 remaining at the first level, + 3*7 at the second level), not sure where the 25th port is though. Anyway, good news is that Raspberry Pi can access all 24 ports. I have not connected miners to it yet, but tested with a USB flash drive. Will follow up once I do a real mining test.

http://www.monoprice.com/Product?c_id=103&cp_id=10307&cs_id=1030702&p_id=6436&seq=1&format=2
http://www.amazon.com/dp/B008F28V7E

[joeventura]

Sorry for cross posting but....


Somethings not right,
First I'm trying to use Scrypt guild.

without the --scrypt in the command line it does not recognize the shares

Then when I have 30 Gridseeds going it never sees more than 5Mh when I think I am sending 10Mh

Using this command line:
Bfgminer -S gridseed:all --set-device gridseed:clock=850 --scrypt -o stratum+tcp://stratum.scryptguild.com:3333 -u joeventura123 -p anything

again note without the --scrypt  it does not see a single share.

Ideas?




Anyone know where I can find cgminer windows binary that works with gridseeds? (5 chip)

scrypt guild requires the --scrypt command for cgminer and bfdminer
cpuminer does not require it...
w

Yeah thanks, sort of figured that out.

know where I can find cgminer windows binary that works with gridseeds?

Any idea why scryptguild does not see full shares?

I am sending 10Mh right?

Joe you can start here
http://cryptomining-blog.com/1254-how-to-mine-both-btc-and-ltc-on-gridseed-5-chip-gc3355-asic/

Why would I start in that thread? I don't want to mine both, just LTC

[vabchgent]

Sorry for cross posting but....


Somethings not right,
First I'm trying to use Scrypt guild.

without the --scrypt in the command line it does not recognize the shares

Then when I have 30 Gridseeds going it never sees more than 5Mh when I think I am sending 10Mh

Using this command line:
Bfgminer -S gridseed:all --set-device gridseed:clock=850 --scrypt -o stratum+tcp://stratum.scryptguild.com:3333 -u joeventura123 -p anything

again note without the --scrypt  it does not see a single share.

Ideas?




Anyone know where I can find cgminer windows binary that works with gridseeds? (5 chip)

scrypt guild requires the --scrypt command for cgminer and bfdminer
cpuminer does not require it...
w

Yeah thanks, sort of figured that out.

know where I can find cgminer windows binary that works with gridseeds?

Any idea why scryptguild does not see full shares?

I am sending 10Mh right?

Joe you can start here
http://cryptomining-blog.com/1254-how-to-mine-both-btc-and-ltc-on-gridseed-5-chip-gc3355-asic/

Why would I start in that thread? I don't want to mine both, just LTC
[/quote

Wrong one try this one for scrypt (LTC) only Cguminer 3.7.2

http://cryptomining-blog.com/1262-download-cgminer-3-7-2-for-windows-scrypt-mining-on-gridseed-5-chip-gc3355-asics/

[Andareed]

Has anyone figured out how to overvolt yet?  I see this in the gridseed driver...

typedef struct s_gridseed_info {
   enum sub_ident   ident;
   uint32_t   fw_version;
   struct timeval   scanhash_time;
   int      nonce_count[8];  // per chip
   int      error_count[8];  // per chip
   // options
   int      baud;
   int      freq;
   unsigned char   freq_cmd[8];
   int      chips; //chips per module
   int      voltage;
   int      per_chip_stats;
}
Aand later on this method:

static void gc3355_increase_voltage(struct cgpu_info *gridseed) {
   uint32_t reg_value;

   // Put GPIOA pin 5 into general function, 50 MHz output.
   if (!gc3355_read_register(gridseed, GRIDSEED_GPIOA_BASE + GRIDSEED_CRL_OFFSET, &reg_value)) {
      applog(LOG_DEBUG, "Failed to read GPIOA CRL register from %i", gridseed->device_id);
      return;
   }
   reg_value = (reg_value & 0xff0fffff) | 0x00300000;
   if (!gc3355_write_register(gridseed, GRIDSEED_GPIOA_BASE + GRIDSEED_CRL_OFFSET, reg_value)) {
      applog(LOG_DEBUG, "Failed to write GPIOA CRL register from %i", gridseed->device_id);
      return;
   }

   // Set GPIOA pin 5 high.
   if (!gc3355_read_register(gridseed, GRIDSEED_GPIOA_BASE + GRIDSEED_ODR_OFFSET, &reg_value)) {
      applog(LOG_DEBUG, "Failed to read GPIOA ODR register from %i", gridseed->device_id);
      return;
   }
   reg_value |= 0x00000020;
   //reg_value &= 0xFFFFFFDF;
   if (!gc3355_write_register(gridseed, GRIDSEED_GPIOA_BASE + GRIDSEED_ODR_OFFSET, reg_value)) {
      applog(LOG_DEBUG, "Failed to write GPIOA ODR register from %i", gridseed->device_id);
      return;
   }
}

Looks to me like we pass an int as the argument voltage and it will add it to the base voltage value(which i think is set to 0, if I'm reading the header right), maybe?  But then it also says gpio(general purpose input output?), which is usually a general purpose pin header on the pcb itself, right?  I'm no developer/hardware engineer, anyone want to comment?

You can set voltage=1 in your config, but it turns out that will actually lower the core voltage.

Did someone find a measurement point on the board to check?  What happens if we pass -1?  I'm surprised more people aren't asking about this, surely with as much cooling as these chips have on them we can get away with a bit more voltage in scrypt only mode, and hence, higher stable clocks!  I don't want to sacrifice a miner if I can avoid it by researching instead...

Yes, it should be possible to replace a resistor to increase the voltage. I haven't had a chance to try this yet.

Why replacing a resistor, do you remember the pencil mod on those bitfury miners ??   

OK, that's pretty clever.

[everest556]

What screen / external monitor would you guys recommend to use with a Raspberry Pi?

[quakefiend420]

I just made an image, gridseed supported.
Just write image it to 4gb sdcard, stick it into your pi, fire up. Miners should start automatically after you've entered mining pool.
Hope this helps.

I am sorry, first upload was bad.....
https://mega.co.nz/#!uZAGFI6S!xVhHZdNvGij2L6gJk_VXnaTewgr7gFjOjnOCTtO_HHU


Thanks to all from litecointalk, who made this possible.

Let me know if that works for you.

What's the root PW?  It's refusing SSH connections too...

[quakefiend420]

I just made an image, gridseed supported.
Just write image it to 4gb sdcard, stick it into your pi, fire up. Miners should start automatically after you've entered mining pool.
Hope this helps.

I am sorry, first upload was bad.....
https://mega.co.nz/#!uZAGFI6S!xVhHZdNvGij2L6gJk_VXnaTewgr7gFjOjnOCTtO_HHU


Thanks to all from litecointalk, who made this possible.

Let me know if that works for you.

What's the root PW?  It's refusing SSH connections too...

got in on the web interface with default pw scripta, forgot about NoScript stopping me...lol

Still refusing SSH, however...

[suchmoon]

I just made an image, gridseed supported.
Just write image it to 4gb sdcard, stick it into your pi, fire up. Miners should start automatically after you've entered mining pool.
Hope this helps.

I am sorry, first upload was bad.....
https://mega.co.nz/#!uZAGFI6S!xVhHZdNvGij2L6gJk_VXnaTewgr7gFjOjnOCTtO_HHU


Thanks to all from litecointalk, who made this possible.

Let me know if that works for you.

What's the root PW?  It's refusing SSH connections too...

got in on the web interface with default pw scripta, forgot about NoScript stopping me...lol

Still refusing SSH, however...

SSH is on port 7722. Root password "scripta".

[quakefiend420]

I just made an image, gridseed supported.
Just write image it to 4gb sdcard, stick it into your pi, fire up. Miners should start automatically after you've entered mining pool.
Hope this helps.

I am sorry, first upload was bad.....
https://mega.co.nz/#!uZAGFI6S!xVhHZdNvGij2L6gJk_VXnaTewgr7gFjOjnOCTtO_HHU


Thanks to all from litecointalk, who made this possible.

Let me know if that works for you.

What's the root PW?  It's refusing SSH connections too...

got in on the web interface with default pw scripta, forgot about NoScript stopping me...lol

Still refusing SSH, however...

SSH is on port 7722. Root password "scripta".

Ah, perfect.  Thanks!

[surgexvb]

Has anyone tried a large amount of gridseeds on cgminer?  I am trying 28 of them on a rasberry pi and it stops accepting shares and eventually crashes after about 2 minutes.  Running 28 instances of cpuminer works great, stable, and multipool reports right about where the hash rate should be.