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sang
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March 20, 2014, 08:32:38 AM |
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I have a treat for all of you. I compiled for Windows girnyau's gridseed fork of cgminer that includes the fine-grain freq settings and freq-per-device settings. Find it here: http://1drv.ms/1kKPsP2Please excuse the hasty readme file, I wanted to share ASAP. (Typical "be careful, unverified binary here" warning. Virus scan it if you want, I know it's clean.) Feel free to donate to: 1AvazUbrKwY8wuxNMGFtt5KqGW8WXdx4JB Cheers and enjoy. |
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darkfriend77
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March 20, 2014, 08:47:31 AM |
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what was the command again for freq-per-device? sry... don't find it .. anymore...
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sang
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March 20, 2014, 08:51:33 AM |
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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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sang
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March 20, 2014, 09:24:38 AM |
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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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gamefixer
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March 20, 2014, 10:49:26 AM |
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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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wolfey2014
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March 20, 2014, 12:36:15 PM |
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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 Modify Miners Professionally! PM me for details!
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sandor111
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March 20, 2014, 01:53:52 PM
Last edit: March 20, 2014, 02:12:17 PM by sandor111 |
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I am giving out 0.6BTC to the first to get his Gridseed miner stable at 1100 MHz (<10 HW error in 24h) and post the steps to mod the miner. So far I have managed to get it stable at 1013 MHz, but I feel we can push it further. I have found the only way to push these further is by replacing the 36k resistor with a higher one and playing with PLL voltage, you need to lower the resistance of R211 or R212 by tracing it with a pencil. Measure the voltage across both resistors and it should be around 1.1v total. If you want to increase PLL voltage, trace R212, to decrease it, trace R211 (go back and forth atleast 10-20 times or you will not notice a change). Simply use an eraser to revert the mod. Personally 1.05v seems sweet spot.  Disclaimer: as always, I am not responsible for damage to your miner, do this at your own risk! |
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gamefixer
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March 20, 2014, 03:25:03 PM |
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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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coinGeek
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March 20, 2014, 03:49:52 PM |
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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. |
Software Developer and Coin Geek
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gamefixer
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March 20, 2014, 04:12:44 PM |
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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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wolfey2014
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March 20, 2014, 04:41:37 PM |
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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. Listen, you guys are playing with fire. Stop before you fugg something up! Adding .25A (250mA) to the 5V USB rail is suicide if you are running more than 2 GS units off of the same USB port power/hub. Actually, if you drop a 12V fan to 5V, the current draw will increase accordingly and without calculating the load change I'd guess an increase to 500mA or as high as 750mA. Death for the fan motor and USB bridge/hub and possibly your comm port power source not to mention totally messed up data throughput! 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 |
I Modify Miners Professionally! PM me for details!
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gamefixer
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March 20, 2014, 04:44:18 PM |
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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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smracer
Donator
Legendary
 Offline
Activity: 1057
Merit: 1021
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March 20, 2014, 04:54:49 PM |
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Dammit. This is going to take me forever to solder.  |
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wolfey2014
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March 20, 2014, 05:09:14 PM |
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Dammit. This is going to take me forever to solder. Hahahahahahahahhaahahahahah! Frikkin hilarious!   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. Could these be the ultimate cure for our hash configuration woes? No more pissin around with tweak this, config that, change this, debug that....ahhhhhhhhhhhhhhh! Ladies and Gentlemen! I present 'our saviors'! Get your FREE firmware upgrades here! http://hashra.com/support/A little background via direct quote: "Our firmware "HASHRA CONTROLA" can be found here… hashra.com/support. It is based on CGMiner and we have also made all the source code public on our GitHub page, please feel free to spread the word about it. We were really aiming to create something that was stable, not just blast a whole load of hashing power if it keeps restarting etc. We are happy with what we have so far though it is still in continuous development. We plan to use this as the basis for our future products coming up and is designed for the Raspberry Pi. At present you can use it to mine SHA or SCRYPT though we are still working on the dual aspect… it is proving tricky but we are getting close to having it now stable… to get it you will just need to hit update firmware and it will update straight away. Using our firmware we recommend core speed at 850… should sit at just over 3.6MH for 10 units with no issues." Let me/us all know how it works out. I don't own a controller yet but,,,soon! I want to let all the bugs get worked out, then decide on which is the least hackable, least attackable and most stable controller out there. Peace on Earth folks! Wolfey2014 Wolfey2014 |
I Modify Miners Professionally! PM me for details!
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Xer0
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March 20, 2014, 05:23:20 PM |
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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? you can solder the fan + to VCC of the micro USB port but assure to have a external powered hub if you use more than one |
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gsupp
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March 20, 2014, 05:31:16 PM |
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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. |
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gamefixer
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March 20, 2014, 05:34:34 PM |
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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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jamieb81
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March 20, 2014, 06:02:44 PM |
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Hey just a little question, how much watt solder iron is ok to use to make the bridge, I have a very thin iron but it's 40w ?
I want to put a little on the tip of the iron and just gently put some lead between points to make the bridge
thanks
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smracer
Donator
Legendary
Offline
Activity: 1057
Merit: 1021
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March 20, 2014, 06:04:18 PM |
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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.
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gamefixer
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March 20, 2014, 06:18:34 PM |
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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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