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Bump! Lowered gridseed prices. I have 20 to move this week.
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The mod units cannot be used in sha256 mode.
I'm more then happy to ship multiple units to you guys. Just let me know!
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How much is shipping to the Netherlands for the gridseeds?
Depends on quantity. Usually between $30-60. |
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Where are you located?
Nevada, USA |
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Lots of updates.
Gridseeds on sale.
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Any significant chance of bricking devices with this mod? I sent 30 units to be moded and 6 of them came back "dead"  That is 20%! Basically they appear to be hashing in cgminer but no shares are submitted at all. All 6 units were working fine at 850 Mhz before the mod. If anybody experienced something like this before, please let me know what you did to solve it. Yes, I had the same problem. Turns out i didn't have enough power to the units. When modded they suck more juice! Take 10 of them and move them to another power supply, I bet they start working then. It is not a power issue. I am using an ATX PSU with 4 units per PCI-e line. Also tried them individually with a dedicated 6A 12V power supply. I am also thinking it must be either the soldering or maybe bad SMDs or something. One unit is showing short-circuit signs with "spark" noise and the ref light flashing really fast. My question is, even if it is bad soldering, are there any changes of getting them to work by redoing the mod? Or are they completely dead now? One thing I did notice, the damaged units only eat about half watts as the good ones (8-9 watts at the wall while the moded ones are a bit over 15 watts) Try running the "damaged" units at a much lower freq, like 600. Most likely either the solder joints are crap and can't carry the current or the person really messed up and just flat out made it a bridge by using too much solder. In each of the few cases I have fixed a botched solder job (either by myself or someone else) on a gridseed, the unit was back to operating as expected after the fix. Really depends on the degree of failure but if the person just messed up soldering only that SMD then chances are the gridseed is just fine. |
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Any significant chance of bricking devices with this mod? I sent 30 units to be moded and 6 of them came back "dead" That is 20%! Basically they appear to be hashing in cgminer but no shares are submitted at all. All 6 units were working fine at 850 Mhz before the mod. If anybody experienced something like this before, please let me know what you did to solve it. Either power issue or someone sucked at soldering and borked the connections. |
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Can someone post details/pictures of the 5v fan mod? Is there another point to solder the fan leads to? Is it dangerous in any way (dangerous in terms of load to the newly utilized power circuit)?
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BTC shalt not Satoshi be discovered.
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Super cheap prices now...
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Thanks for that. I'll stick to my Computer PSU's then since these will be in a room with me. |
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How loud are these PSU's? Can someone give me a comparison?
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Can you take an extremely close picture of that area so I can try to identify the parts needed and see if I can source them?
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Do you still have the original SMD pieces that came off? Will you sell it with the original heatsink?
I'm interested if you have the parts.
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Want to offer this if anyone is interested.
I have moded 8 units so far and they have been flawless. Running between 404 to 420khash depending on chip quality.
If anyone is looking for someone to mod their gridseeds for them, I could do it. PM me with how many units you need done and I'll send an estimate back. Not looking to make much - just to cover my time and risk. Also please make sure you have the gold unit with an ST32 USB controller. If I make a horrible mistake and brick your Gridseed, I will replace with one from my own farm.
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Some preliminary info on my 8 moded miners:
888mhz (377khash) seems to be the magic number for non-moded units.
950mhz (404khash) is stable for all my volt moded units.
963mhz (410khash) is stable all but two.
975mhz (414khash) is stable for 2.
988mhz (420khash) is stable for one.
(Stable meaning very few HW errors)
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what was the command again for freq-per-device? sry... don't find it .. anymore...
Check readme.txt. Per device freq can be set as follows: --gridseed-freq 6D9426984857=988,6D9656774857=975,6D8956965251=975,6D8F50774857=950 |
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