[GUIDE] GridSeed GC3355 5 Chip Setup/power/windows/linux/rpi by UnicornHasher

[coinminer69er]

Prices have dropped fast on these...down to $100 a unit. Not nearly the $14.40 price they should be sold at to compete with the Titan but getting there.

Very true, which is why I'm not buying any more mining equipment. When the big script asics come online, even gridseed blades won't be doing you much good. With the difficulty increases you'll be lucky to make decent profit after ROI, if you even get there.

Yea, I kinda regret ordering when they were ~$260/each but all in all it's been fun and has kept me busy. ROI will be very tight if ever on them. I know I didn't make up the difference in the extra month or so I had them before they came down to the $95 range.

I wont be getting the G-Blade units....might get some more Infinity USB's (what gridseed calls their 5 chip miners now) if the price gets to about $60/each just to fill out my custom case    ....and maybe cost average down the ROI a bit....but I'm guessing that unless we get really lucky or do some creative altcoin mining it will be tough.

Same here, I paid $2200 for my 10 and then the price dropped $500 while they were on the way. Awesome. Nothing I can do about it now except try to make as much BTC in the meantime.

Since I don't have the money or skills to do the voltage mod, I wonder if running them in dual-mode might help get to ROI faster. I'm running the dbartle cgminer on a headless Pi(Raspbian), is that possible to do with the way I have everything set up now?

[favelle75]

Since I don't have the money or skills to do the voltage mod, I wonder if running them in dual-mode might help get to ROI faster.

No, it most certainly will not unless you get free electricity. Scrypt-only uses 1/10th the power.

[coinminer69er]

Since I don't have the money or skills to do the voltage mod, I wonder if running them in dual-mode might help get to ROI faster.

No, it most certainly will not unless you get free electricity. Scrypt-only uses 1/10th the power.

Good point, I forgot about that. Looks like I need to learn how to solder so I can do the volt mods...

[J4bberwock]

www.Hashra.com is having a sale now... the new Gridseed Blade Plus - 5000KHs miner, complete with psu, controller, cables, software etc. Only $1600 for the whole smash! What a deal!
GC3355 miners for only $105 each in lots of 10 or more! The price has come way down!
I'm gonna pick me up 10 or so right now and, maybe a blade or two, too!

I wonder if the blades will be able to be OC'd to 8Mh/s similarly to the 5 chip miners. That would be stupendous at this price point.

Is a Rpi required to run them though, I would hope not?

I do not think we need a Rpi to run them. And yes would be awesome if we can voltmod the blade, but who is going to buy one and has the knowledge to find out how to mod it?? that's the question.

it's not like a cheap 120$ gridseed that anyone can get their hands on

Blade will soon be at home for voltmod.
From what I can see, it should overclock between 8.0 and 8.5 quite easily but will draw around 600watt. not that bad compared to GPU rig
stay tuned for more on the overclock.

[jamieb81]

600 watt? aren't they like 100W or so stock?

[J4bberwock]

It depends on what resistor you use for voltmod.
400 watt is a safe bet, but could go higher, up to 600 watt with 56k or 60K resistor. I'll have to check the voltage regulator to be sure it'll handle the load before modding.
hopefully, the upi buck controllers seems to be overcurrent protected, but it'll be a step by step test.

[rob1313]

I hope someone can point me in the right direction here. i been looking for hours and cant get individual unit freq tuned. And i cant find a good post on it.

i running 31 units on a ubuntu box. i modded 5 units some with resistors and some with just the bridges. i ran each unit individual on my raspi and found the freq they will run at without Hw's. i was using scripta or the pi to do this with.

i did a git pull from "git://github.com/dtbartle/cgminer-gc3355.git"

when i enter
"
sudo ./cgminer --scrypt -o site -u username -p x --gridseed-options=baud=115200,freq=850,chips=5 --gridseed-freq 8D8B16785748=1150,8D9123A95748=950,8D6A187B5355=950,8D6A187B5355=900,8D70218C5355=950,6D95246D5650=950 --hotplug 0
"

it says "./cgminer: --gridseed-freq: unrecognized option"



i running 31 units on a ubuntu box. i modded 5 units some with resistors and some with just the bridges. i ran each unit individual on my raspi and found the freq they will run at with out Hw's. i was using scripta or the pi to do this with.

Does this version not support freq tuning? i believe i read else where it does per miner but im thinking that was a different version and not this one.

[edonkey]

I hope someone can point me in the right direction here. i been looking for hours and cant get individual unit freq tuned. And i cant find a good post on it.

i running 31 units on a ubuntu box. i modded 5 units some with resistors and some with just the bridges. i ran each unit individual on my raspi and found the freq they will run at without Hw's. i was using scripta or the pi to do this with.

i did a git pull from "git://github.com/dtbartle/cgminer-gc3355.git"

when i enter
"
sudo ./cgminer --scrypt -o site -u username -p x --gridseed-options=baud=115200,freq=850,chips=5 --gridseed-freq 8D8B16785748=1150,8D9123A95748=950,8D6A187B5355=950,8D6A187B5355=900,8D70218C5355=950,6D95246D5650=950 --hotplug 0
"

it says "./cgminer: --gridseed-freq: unrecognized option"



i running 31 units on a ubuntu box. i modded 5 units some with resistors and some with just the bridges. i ran each unit individual on my raspi and found the freq they will run at with out Hw's. i was using scripta or the pi to do this with.

Does this version not support freq tuning? i believe i read else where it does per miner but im thinking that was a different version and not this one.

This is the version that supports the per-unit frequency mods:

https://github.com/girnyau/cgminer-gc3355.git

Note that it also outputs different values for the API, so Scripta as-is cannot display the hash rate. I ended up moding Scripta to handle the girnyau output.

But now I'm using this version of cgminer that outputs the serial number and frequency for each unit (which is insanely useful):

https://github.com/mox235/cgminer-gc3355.git

The above mox235 version is based on the girnyau fork. I code reviewed the changes and it's identical except for the API JSON output changes.

Here's the matching mox235 version of Scripta to handle the display of the new API output (and fixes a bunch of Scripta bugs):

https://github.com/mox235/scripta

I additionally merged in my mods to the mox235 Scripta variant and can provide them if they're useful. I find it nicer to view the Gridseed unit output in KH/s and the total in MH/s.

[Axion_Zen]

I can't seem to get more than 7 units accepting shares with rasp pi +cgminer and a sabrent 13 port hub...always 7 units only anyone know solution

[milkman510]

I can't seem to get more than 7 units accepting shares with rasp pi +cgminer and a sabrent 13 port hub...always 7 units only anyone know solution

I hear people having success using a 10 port hub. But there are problems using over 10 ports. I'm using the cubieboard2 and two sabrent 13 port adapters with 25 gridseed. It can see all the devices. Try the below link for supported powered usb hubs. Good luck.

http://elinux.org/RPi_Powered_USB_Hubs

[rob1313]

I hope someone can point me in the right direction here. i been looking for hours and cant get individual unit freq tuned. And i cant find a good post on it.

i running 31 units on a ubuntu box. i modded 5 units some with resistors and some with just the bridges. i ran each unit individual on my raspi and found the freq they will run at without Hw's. i was using scripta or the pi to do this with.

i did a git pull from "git://github.com/dtbartle/cgminer-gc3355.git"

when i enter
"
sudo ./cgminer --scrypt -o site -u username -p x --gridseed-options=baud=115200,freq=850,chips=5 --gridseed-freq 8D8B16785748=1150,8D9123A95748=950,8D6A187B5355=950,8D6A187B5355=900,8D70218C5355=950,6D95246D5650=950 --hotplug 0
"

it says "./cgminer: --gridseed-freq: unrecognized option"



i running 31 units on a ubuntu box. i modded 5 units some with resistors and some with just the bridges. i ran each unit individual on my raspi and found the freq they will run at with out Hw's. i was using scripta or the pi to do this with.

Does this version not support freq tuning? i believe i read else where it does per miner but im thinking that was a different version and not this one.

This is the version that supports the per-unit frequency mods:

https://github.com/girnyau/cgminer-gc3355.git

Note that it also outputs different values for the API, so Scripta as-is cannot display the hash rate. I ended up moding Scripta to handle the girnyau output.

But now I'm using this version of cgminer that outputs the serial number and frequency for each unit (which is insanely useful):

https://github.com/mox235/cgminer-gc3355.git

The above mox235 version is based on the girnyau fork. I code reviewed the changes and it's identical except for the API JSON output changes.

Here's the matching mox235 version of Scripta to handle the display of the new API output (and fixes a bunch of Scripta bugs):

https://github.com/mox235/scripta

I additionally merged in my mods to the mox235 Scripta variant and can provide them if they're useful. I find it nicer to view the Gridseed unit output in KH/s and the total in MH/s.

thanks that help we out alot i go give it a try right now. 1 last question do you have to state every device speed?

[edonkey]

thanks that help we out alot i go give it a try right now. 1 last question do you have to state every device speed?

The way it works is you can specify a default frequency, plus any serial number/frequency combinations that override the default. That's what I did initially, but in the end I put all of my GS units serial numbers in the config because I found it was more convenient for tuning.

Here's an example of what you could put in your Scripta miner.options.json file, where 850 is the base frequency for any units for which you haven't specified an S/N specific frequency:

Code:

	{
		"key": "gridseed-options",
		"value": "baud=115200,freq=850,chips=5"
	},
	{
		"key": "gridseed-freq",
		"value": "8D6E50A55748=900,8D9136685748=875"
	},

[Dabs]

According to some people, they save power by cutting out the fans. Then according to other people, they save a little space by taking out the massive heat sink.

On scrypt only single mode of course.

[tommylo]

Not sure where to put this as I'm new to this forum.
Anyhow, I just disconnected the fans from my gridseeds and restarted cgminer.  After an hour I have zero rejects on most devices whereas before I had about 3% reject rate.  I don't know why disabling the fan would improve acceptance but it actually seems to be working better without the fans than with them, maybe the power is more stable or something?  Anyone else notice this?  Also, I'm running USB antminers U2 and cgminer keeps trying to use them (gridseed detect, failed to initialize)  I'm successfully using bitminter to run the antminers but i am wondering if there is a way to tell cgminer to ignore them.  I just opened a bitcoin wallet, is there anyway to test it buy getting some micro bitcoin deposited?

[gtraah]

Hi Guys,

I would like to use the latest Cgminer but I do not know how to compile it to windows? Also why doesnt this version have frequencys in small steps all the way to 1400 because I will soon be modding my miners for a stable 513kh AT 1200freq , I am very curiuos why this was not compiled using the lastest OC freq cgminer..

i want this version of cgminer that outputs the serial number and frequency for each unit - but tjis says itt only has max 1000freq

https://github.com/mox235/cgminer-gc3355.git

[gtraah]

www.Hashra.com is having a sale now... the new Gridseed Blade Plus - 5000KHs miner, complete with psu, controller, cables, software etc. Only $1600 for the whole smash! What a deal!
GC3355 miners for only $105 each in lots of 10 or more! The price has come way down!
I'm gonna pick me up 10 or so right now and, maybe a blade or two, too!

I wonder if the blades will be able to be OC'd to 8Mh/s similarly to the 5 chip miners. That would be stupendous at this price point.

Is a Rpi required to run them though, I would hope not?

You can get them OC to 3.6Mhs per 40 Chips X 2  So total it will be around 7mh-7.2mh per blade but This pumps the wattage to over 400watt, Its cheaper to get the Gridseeds and mod them yes same wattage range but you can get more for the price, and mod them all to a 510Kh stable

meaning for 20x gridseeds @ $2000 you will have just 10.2Mh once all modded. Only difference is more space and wires.

[Jaqen]

I've got my 10 units up and running but am having problems with them shutting off. I am using the dbartle version of cgminer on a raspberry pi. They'll work great for 4-6 hours, but then will turn off and is shown as "OFF" in cgminer. I haven't changed the wiring and it's always different units so I don't think it's the hub or cables. I've got hotplug set to 30, and restarting the hub gets them all back on for another few hours. Any suggestions?

[tonytre]

Hello all,

I have ordered my first gridseed from GAWminers, and have followed the guide to download cgminer for Ubuntu from this post. I believe I have succussfully downloaded it as I was able to get it to start up at the end, but obviously it says no USB device detected.

I have been mining with 3 r7 265's for the past month, but before that had no experiece in linux or computer building. I built my first computer and with some help was able to get my cards mining. I use sgminer and get it started by cd ~/ and then ./mine.sh.

I was wondering if there was a way to start cgminer like that, as I think the only way I was able to get it running was by calling cd ~/ then ./cgminer/cgminer -o xxxxx and all the information for gridseed after. I was wondering if there was a way to start the gridseed mining by calling on a .sh file like I do for my gpus. I am hoping someone doesn't mind answering my elementary question. I want to be prepared to have the gridseed up and running right when it gets here and not have any software issues. Will the gridseed work by running cd ~/ then ./cgminer/cgminer -o stratum+tcp://server:port -u username.worker -p password  --gridseed-options=baud=115200,freq=888,chips=5 --hotplug 30? It currently starts to look for a pool when I type that in now and feel like it should work once the gridseed is hooked up, and is there any easier way to get it running other than how I stated.

I also plan to just open cgminer in a second terminal, as my gpu's currently run on sgminer. Will this cause any problems?

Thanks!

[edonkey]

Hello all,

I have ordered my first gridseed from GAWminers, and have followed the guide to download cgminer for Ubuntu from this post. I believe I have succussfully downloaded it as I was able to get it to start up at the end, but obviously it says no USB device detected.

I have been mining with 3 r7 265's for the past month, but before that had no experiece in linux or computer building. I built my first computer and with some help was able to get my cards mining. I use sgminer and get it started by cd ~/ and then ./mine.sh.

I was wondering if there was a way to start cgminer like that, as I think the only way I was able to get it running was by calling cd ~/ then ./cgminer/cgminer -o xxxxx and all the information for gridseed after. I was wondering if there was a way to start the gridseed mining by calling on a .sh file like I do for my gpus. I am hoping someone doesn't mind answering my elementary question. I want to be prepared to have the gridseed up and running right when it gets here and not have any software issues. Will the gridseed work by running cd ~/ then ./cgminer/cgminer -o stratum+tcp://server:port -u username.worker -p password  --gridseed-options=baud=115200,freq=888,chips=5 --hotplug 30? It currently starts to look for a pool when I type that in now and feel like it should work once the gridseed is hooked up, and is there any easier way to get it running other than how I stated.

I also plan to just open cgminer in a second terminal, as my gpu's currently run on sgminer. Will this cause any problems?

Thanks!

Are you running cgminer as root? I think you have to do that or it won't be able to talk to the GSD's.

I have two rigs, one is Gridseed 5 chip based and the other uses DualMiners. In both cases I run cgminer as a service via Daemontools. I've posted a "how to" here in case you're interested:

https://bitcointalk.org/index.php?topic=577018.0

If you're on a real linux box and not a Raspbery Pi, then you can probably skip my instruction about installing ramlog because you probably don't need it.

If your cgminer still can't see the GDSs, then you can tell if they're visible on the USB bus via this command. This might help rule out a USB hub or connection problem:

lsusb -t

If you need an example config, here's the one that I'm using with the mox235 variant of cgminer (same as girnyau but with better JSON API output):

Code:

{
    "gridseed-options": "baud=115200,freq=850,chips=5",
    "gridseed-freq" : "8D6E50A55748=900,8D9136685748=875",
    "kernel-path": "/usr/local/bin",
    "failover-only": true,
    "verbose": true,
    "api-listen": true,
    "api-port": "4028",
    "expiry": "120",
    "hotplug": "5",
    "log": "5",
    "no-pool-disable": true,
    "queue": "1",
    "scan-time": "30",
    "scrypt": true,
    "shares": "0",
    "pools": [
		{
			"url" : "stratum+tcp://uswest.wafflepool.com:3333",
			"user" : "REPLACEME_workername",
			"pass" : "x"
		},
		{
			"url" : "stratum+tcp://sf.clevermining.com:3333",
			"user" : "REPLACEME",
			"pass" : "x"
		},
		{
			"url" : "stratum+tcp://us-west.coinshift.com:3333",
			"user" : "REPLACEME.workername",
			"pass" : "x"
		}
    ]
}

The above config defaults to a frequency of 850 unless overridden. You can see that the "gridseed-freq" option demonstrates overriding the frequency on a per serial number basis.

You have to replace "REPLACEME" in all cases above with your bit coin address. Do yourself a favor and copy and paste the address. These addresses are case sensitive, so one upper or lower case mistake and your earnings go into a hole. Change "workername" to the name you want for your rig, in case you have more than one and you want to be able to tell them apart.

I'm also using the mox235 version of Scripta as the web front end, but it's kind of involved getting it installed and working on an existing Linux system. Here's a link to the basic instructions I followed, if you're feeling up to it:

https://litecointalk.org/index.php?topic=9908.msg138403#msg138403

Remember to use the mox235 version of scripta with the mox235 version of cgminer. They've both been modified to provide improved information, including displaying the serial number and frequency of each GSD (which is insanely useful if you have more than one and want to tune them).

Note that if you use my mechanism of running cgminer under a service, you don't want to integrate the Scripta rc.local file. Also you should replace their start/stop scripts with your own that call daemontools to start and stop the miner. But frankly I just use Script for status, not control.

Also, when I leave the Scripta cron jobs on, they cause USB disconnects. I suspect this is a cgminer bug when multiple cron jobs hit the API simultaneously. Some people have successfully staggered their Script cron jobs to avoid the problem.

Probably too much information, but I hope some of it helps...

[sandor111]

https://github.com/siklon/usb-miner/tree/master/software/cpuminer

Short summary:
* Added hashrate statistics
* Added auto per-chip frequency tuning
* Added JSON API at port 4028 -> send {"get":"stats"} to get stats for each miner/chip
* Input any frequency you want

Code:

 -G, --gc3355=DEV0,DEV1,...,DEVn      enable GC3355 chip mining mode (default: no)
  -F, --freq=FREQUENCY  set GC3355 core frequency in NONE dual mode (default: 600)
  -f, --gc3355-freq=DEV0:F0,DEV1:F1,...,DEVn:Fn      individual frequency setting
  -A, --gc3355-autotune  auto overclocking each GC3355 chip (default: no)

It should work on Rpi, but I haven't tested it yet.