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I'm chillin and seeing what others do in the long run with these volt mods. The only thing I'm doing is disconnecting the fans but I'm running in scrypt only so they are running just fine.
I'm with ya Wolfey.
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Haha, they lost 3/4 of their miners almost instantly after the promotion ended.
If they weren't so deceitful with the promotion to begin with I think a lot of people would have stayed, I know I would have. They had to know that doubling payouts was going to attract a lot of attention so they should have planned better. |
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I left the second day in. Pretty lame bait and switch move they pulled.  |
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I am so happy to get rid of the controllers. I had digital timers turning the power off every 2 hours for 1 minute to reset all the miners. CGminer has been flawless so far. Time to start soldering.
Yeah, the two controllers I have suck. Like I said, I dont even know what they are.... They are bare boards and use some mini SD card or something. All I know is I hate them.  |
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How ever, you may want to try this first as there may end up being no need for any hardware mods.
*****************************
HASHRA TO THE RESCUE!
I have been authorized by HASHRA to announce....
New firmware for our controllers.
Firmware for some "controller" is not going to negate raising the core voltage with a hardware mod to obtain faster stable clock speeds. Nor will it help those of us that dont use controllers. I dont even know what the hell the two controllers I have are supposed to be. Web interface is full of chinese and they make zero sense to me. |
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Listen, you guys are playing with fire.
Stop before you fugg something up!
If you are only running Scrypt, just disconnect the fan! No need for it in Scrypt only mode.
If you are running sha/scrypt or just sha, leave the fan the way it is.
If the noise bothers you that much, either replace it with a quieter fan or put the miners in another room
away from you so you don't hear them!
Geesh!
W2014
LOL! I'm running in scrypt only. I didnt much care for the loss of scrypt hashing power when running in dual mode. I'm far from setting anything ablaze but thanks for looking out for me. |
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Was wondering if anyone had this idea.
I've got some gridseeds that have disconnected fans (I disconnected them). They are running cool enough but figured that running the fans at maybe half voltage would be better then no voltage. Anyone try using a 5-6VDC Zener diode on the fans?
Nope, ZD's are not voltage regulators! Don't try it. It will fry and go POOF and so might your fan. If you want to try to drive your fan at 5V, use a standard 5V regulator chip. They are as common as flies and cost next to nothing. 1 5V regulator, a couple of .01uf caps -1 on each input and output to gnd - a bit of a heat sink - if any - and you have your 5V drive. 1N7805 I believe is the pn in a TO-220 case. I don't think the T0-92 can carry enough current to last long if at all. Needs to handle at least .25A. If it does, good and you won't need a heat sink. Use the TO-220 and it may not need a heat sink either. It should only run warm at the most. If it gets hot, use a small clip on type single chip heat sink. Cheap as chips, as they say in the UK. Good luck, mate! Wolfey2014 I suppose your right. I thought of using a TO-220 7805 but I dont really want to add more crap to the thing. I figured a 5 VDC zener would cut that passing voltage enough to slow the fan down but, who knows.... The diode would have been nice and clean being inline with the wires too. What about the 5V from the USB? Edit: I wonder if 5V would be enough though... I've used a series resister on fans before. You just need to use one that will handle the current. On the first two Grids that I unboxed I made a 4 pin hard drive molex to 2.1mm barrel plug adapter to provide +12 to the miners. I also ran the ground and +5 wires from that molex to the fans and they ran great. Perfectly quiet but enough air to keep the grids cool (which were running in dual mode at the time). I didn't think of using a resistor or the USB voltage. Both are good ideas as it keeps the miners appearance nice and clean with no extra wires or parts floating about. |
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Was wondering if anyone had this idea.
I've got some gridseeds that have disconnected fans (I disconnected them). They are running cool enough but figured that running the fans at maybe half voltage would be better then no voltage. Anyone try using a 5-6VDC Zener diode on the fans?
Nope, ZD's are not voltage regulators! Don't try it. It will fry and go POOF and so might your fan. If you want to try to drive your fan at 5V, use a standard 5V regulator chip. They are as common as flies and cost next to nothing. 1 5V regulator, a couple of .01uf caps -1 on each input and output to gnd - a bit of a heat sink - if any - and you have your 5V drive. 1N7805 I believe is the pn in a TO-220 case. I don't think the T0-92 can carry enough current to last long if at all. Needs to handle at least .25A. If it does, good and you won't need a heat sink. Use the TO-220 and it may not need a heat sink either. It should only run warm at the most. If it gets hot, use a small clip on type single chip heat sink. Cheap as chips, as they say in the UK. Good luck, mate! Wolfey2014 I suppose your right. I thought of using a TO-220 7805 but I dont really want to add more crap to the thing. I figured a 5 VDC zener would cut that passing voltage enough to slow the fan down but, who knows.... The diode would have been nice and clean being inline with the wires too. |
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Was wondering if anyone had this idea.
I've got some gridseeds that have disconnected fans (I disconnected them). They are running cool enough but figured that running the fans at maybe half voltage would be better then no voltage. Anyone try using a 5-6VDC Zener diode on the fans?
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I'm suddenly seeing myself working on grids tomorrow.  And it wont be this one!  |
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for those of you that are using bfg... does your hashing speed roughly equal what your pool says?
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so has anyone gotten past the glitchy cgminer issue where you have to unplug the miners, start cgminer, plug the miners back in and hope it finds them?
I also noticed that when I had my 20 miners controlled by cgminer my pools hash rate was in the 4800khs area while cgminer reported over 7000khs. Now that they are all running in their own instance of cpuminer I average well over 6500khs and sometimes close to 7500khs at my pool.
Does bfgminer work with these things yet?
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Anyone near Dallas that wants to try this out but not sure about your soldering skills PM me. I've been in the electronics industries for over 30 years so this is a piece of cake....
I'll do it for nothing.
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Is there any chance he can part with the "when it wants to" board? I'm interested from a dev standpoint, as most of the proto boards available are under powered.
You can check with him. I already shipped the boards. Cray, the one thats iffy is #5 from the bottom (or two from the top) on the stack of 6. |
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Cray-1 and I have entered into an agreement to have him purchase these FPGA boards. Thanks to all others that inquired about them.
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Anyone want one or more of these things? 8 of them work perfectly (has at around 800mghs) but one works when it wants too.
If you want one shoot me an offer. I'll ship anywhere but buyer will have to cover shipping. payment in BTC and escrow if needed is fine. I dont have an escrow agent in mind but I'm sure I can find one if need be. I'll be keeping the large fans and power cables. The boards will ship with one USB cable per board.
I added 4" fans to these because the little ones make too much noise for me. The other 6 are on another bench.
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Why would someone buy a gridseed miner right now at these prices? I'm not understanding how it would ever be profitable.
For me it was about reducing my power footprint, time spent baby sitting GPU's and heat. I've not got 20 grids on a single computer drawing around 180 watts fully operational. Heat isnt an issue at all (I've even disconnected the fans on the grids) and I have not had to baby sit them at all other than changing the version of cpuminer when it was patched for single mode only. I managed to sell the GPU's I had (which amounted to a bit less hashing power I might add) for more than enough to buy those 20 grids. |
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Now they deleted my message and i cant post there anymore. Dont like the truth : (
Message:
At first you lower reward from 40-60 ghx - x1.25, now its 25-60ghx - 1.25x.
What next, 10-60ghx - x1.25 ?
Yeah, thats pretty shitty. I'm thinking about jumping ship and going back to the pool I came from. |
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So, dumb question. Whats a 51% attack and why would it kill a coin? I've heard about such things a few times but I really dont get it.
Thanks!
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