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Author Topic: Gridseed GC3355 -Hybrid Scrypt/SHA256 ASIC  (Read 106860 times)
romang
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April 02, 2014, 05:08:43 PM
 #381

Anyone have any place to get the usb2 gridseed miners for cheap? ebay has then for 59.99 free shipping.

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Richard Branson
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April 03, 2014, 10:18:23 AM
 #382

That's just your opinion, not everyone mines to sell for BTC. Maybe some people like to mine different Scrypt coins.
But yes for some people it's better to buy low and sell high.

But I rather buy a miner that I know will have some resell value left when I'm done mining, than try to out smart the market.
Remember that the ASICMiner USB miners still sell on eBay.


Because you can allways find some idiot...
With 10% Difficulty increase, you get approx 20$ worth of coins with 1 gridseed miner @ 350KH/s.

After that 120 days, mining won't be profitable.
Paying 200$ for such a miner is just a waste of money.
You could buy 10x the amount of any Scrypt Coin NOW.

If the price goes up -> you gain 10x more than with a miner. Selling ASICs is most profitable for the sellers.

Byteball address: CYV4YITSUKGIYCA5GUPIUPP377OF4NWQ
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April 04, 2014, 02:23:25 PM
 #383

I just ran across the last paragraph at Crypto Mining Blog on the new 3.99 bfgminer.  http://cryptomining-blog.com/1883-download-the-latest-bfgminer-3-99-0-for-windows-with-gridseed-asic-support/  It reads:

You should be careful with the new release if you are using earlier Gridseed 5-chip ASIC devices that use the CP2102 USB to UART Bridge Controller as these apparently do not work properly with the latest bfgminer 3.99.0. The older miners are beign detected and local hashrate is getting reported, however it seems nothing gets sent to the pool, so for these you should stick to the previous binary that works just fine. For the newer Gridseed ASIC revisions that use the STMicroelectronics Virtual COM Port (STM32 Virtual COM Port) there are no problems with the new release.

I am at work right now, but nearly sure that I have ten of the older Gridsees with the CP2101 bridge controller.  When I get a chance, I am going to uninstall STMicroelectronics virtual com port drivers and install http://www.silabs.com/products/mcu/pages/usbtouartbridgevcpdrivers.aspx.  I will then re-initiate the Gridseeds with bfgminer.  If no shares are reported to the pool, I will move to the older cpuminer binary with the CP2102 drivers and update you guys as to the results.
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April 04, 2014, 05:05:36 PM
 #384

Bfgminer with gridseed only works on Windows right? I haven't found a guide on how to get it working on Linux yet.

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April 04, 2014, 05:15:47 PM
 #385

Bfgminer with gridseed only works on Windows right? I haven't found a guide on how to get it working on Linux yet.

Works under Linux too.

This is a good guide on how to install BFGminer: https://bitcointalk.org/index.php?topic=517451.0

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April 04, 2014, 08:16:19 PM
 #386

Bfgminer with gridseed only works on Windows right? I haven't found a guide on how to get it working on Linux yet.

Works under Linux too.

This is a good guide on how to install BFGminer: https://bitcointalk.org/index.php?topic=517451.0

Thanks a bunch been looking for a alternative for Cgminer for ages since it's not stable at all.

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April 05, 2014, 05:26:42 PM
 #387

That's just your opinion, not everyone mines to sell for BTC. Maybe some people like to mine different Scrypt coins.
But yes for some people it's better to buy low and sell high.

But I rather buy a miner that I know will have some resell value left when I'm done mining, than try to out smart the market.
Remember that the ASICMiner USB miners still sell on eBay.


Because you can allways find some idiot...
With 10% Difficulty increase, you get approx 20$ worth of coins with 1 gridseed miner @ 350KH/s.

After that 120 days, mining won't be profitable.
Paying 200$ for such a miner is just a waste of money.
You could buy 10x the amount of any Scrypt Coin NOW.

If the price goes up -> you gain 10x more than with a miner. Selling ASICs is most profitable for the sellers.

That's why you just point your gridseed miner at a multipool, which is always switching between the most profitable coins . . . .

Also, the keyword you used is if. If the price doesn't go up, you're out your money. With a gridseed miner, using only 7kw/h is more cost effective than mining with a gpu. Many people have bought coins from exchanges only to see the coin die or drop 50% in value. At least with owning a gridseed miner, you still have the hardware to continually mine other coins at low cost so long as scrypt coins are still out there.

Also, as long as you mine the right coins at the right time and sell at the right time, you'll make you for the cost of the miner plus some.

And again, Im sure a lot of people using asic miners are joining multipools to recoup their costs quickly. IPOminer has brought in good profits just by mining, holding, and automatically switching coins to hold and sell later.
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April 05, 2014, 06:26:36 PM
 #388

You guys should really try the new LightningAsic V3c miner software if you haven't already, it's designed to do one thing and one thing only, to get the most out of your Gridseed miners. If you don't have a Tp-link 703N, they are really cheap to get on eBay @ ~$20. Definitely worth the investment.

https://bitcointalk.org/index.php?topic=554542.0

forevernoob
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April 05, 2014, 09:27:52 PM
 #389

You guys should really try the new LightningAsic V3c miner software if you haven't already, it's designed to do one thing and one thing only, to get the most out of your Gridseed miners. If you don't have a Tp-link 703N, they are really cheap to get on eBay @ ~$20. Definitely worth the investment.

https://bitcointalk.org/index.php?topic=554542.0

How much extra performance will I get from using the controller instead of my PC?
And how come they can't make a firmware forr the miner?

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April 08, 2014, 02:00:05 PM
 #390

I have had ten gridseeds for about a week now and have a unique problem that I think will only be solved by the smart people in this forum.  The gridseeds look like they are hashing according to bfgminer, but the devices are not going “online”.  Of course there is no issue with my system being on the internet itself as other devices are hashing fine and no issues surfing the web. I have also attempted to use different pools to ensure it is not a pool specific or stratum issue. 

Version of bfgminer: http://cryptomining-blog.com/tag/gridseed-bfgminer

Screenshot of related system and setup info: http://s24.postimg.org/5b7dovy2d/photo_1.jpg

Connections and hardware:
USB Cables: http://www.ebay.com/itm/190691293084
Cable to Gridseeds: http://www.ebay.com/itm/111306458237
Gridseeds: http://www.ebay.com/itm/201057196108
PSU: http://www.amazon.com/gp/product/B00CGYCNG2
10 Port 3.0 USB Hub: http://www.amazon.com/gp/product/B00DCO9YVM

The ten gridseeds you see in the picture are on virtual COM ports 1-10.  The USB hub is 3.0 but connected to 2.0 port on the Z87 motherboard.  I do not believe there are any power issues or driver issues because the units are connected and hashing locally.  They are just not going "online" to connect to the pools.  I am going bonkers on this issue and would be more than happy to send a Doge or BTC tip to whomever can solve this issue!
I wanted to update the thread with my solution.  As I mentioned in the original thread, I bought this PSU: PSU: http://www.amazon.com/gp/product/B00CGYCNG2

This was my second PSU of the same model.  What I did not realize was the PSU must be connected to a motherboard in order to turn it on.  My assumption was that the unit was powered up when the switch on the back was flipped on.  I was mislead by the green flashing lights and local hashing results on the miner screen.  Clearly the USB cables were powering the LED displays.

Once I moved the four pci-e power connections to the primary PSU connected to the motherboard the fans started spinning on the gridseeds.  I upgraded to bfgminer 3.99 and the units started hashing at the pool.  I am a nOOb rig builder and just wanted to share my solution so that others can double check the power supply!
jamieb81
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April 10, 2014, 05:06:48 PM
 #391

Hey, just put a paperclip between the green wire and the black wire and your PSU will fire up.

also for those running just a few gridseeds, first price cheapo PSU works just fine, I also run them on a 10$ PSU works great
ChefBorjan
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April 14, 2014, 09:01:06 AM
 #392

I'm finally tempted to pull the trigger and purchase my first miner. I wanted to start small, but I realised buying a pure SHA2 hasher means I am going to get left behind pretty quickly. For that reason, something that can do scrypt makes more sense. Does that thinking make sense, and if so, do grid seeds still make sense? Some people above say yes, some people say no. I think thats the same for all mining equipment though no?

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forevernoob
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April 14, 2014, 03:07:47 PM
 #393

I'm finally tempted to pull the trigger and purchase my first miner. I wanted to start small, but I realised buying a pure SHA2 hasher means I am going to get left behind pretty quickly. For that reason, something that can do scrypt makes more sense. Does that thinking make sense, and if so, do grid seeds still make sense? Some people above say yes, some people say no. I think thats the same for all mining equipment though no?

Hard to answer really. It's all just based on speculations. You can just guess what the BTC/alt coin value is going to be in the next few months. The same with the resell value.
And who knows when KNC titan will be released?
But I'm pretty confident these miners will have a good resell value since Gridseed is a known brand.

Another approach you could take is to mine specifc scrypt coins that you believe in and hold them for awhile.
But like someone said before, why not just buy the coins then?

The reason I brought 3 gridseeds are mainly because I'm interested in the technology and from every purchase you learn something. You learn from mistakes too you know.


amdfxman1701
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May 10, 2014, 07:42:55 PM
 #394

I'm thinking about buying a gridseed miner since prices have basically halved since april, but my question is this: Do you believe purchasing a gridseed miner is worth it at this point? Scrypt coins are on the way out since most new coins are adopting different algorithms to combat the miners. If this is the case, if there a good ROI or will only those with the super miners (just as with the sha-256 super rigs) get all the coins?
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