J4bberwock (OP)
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May 04, 2014, 07:18:45 AM |
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here is the bridge voltmod for the blade. still untested, I'll have to physically check on the board for voltage =1 to be sure ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi61.tinypic.com%2F15hhklj.jpg&t=665&c=JrECBXfUFH4wlA)
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greatway
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May 04, 2014, 07:19:28 AM |
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is it better to buy gridseed or buy btc?
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darkfriend77
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May 04, 2014, 07:26:13 AM |
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is it better to buy gridseed or buy btc?
probably it's better to read up some days about cryptocurreny & mining for you.
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GridseedForever
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May 04, 2014, 08:55:58 AM |
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I just bought a blade and found some dodgy chinese software that can get an extra 100k/s out of a normal gridseed but it works, not sure about the blades though. I would like to try it one one just worried about breaking ir. Looks like the software "undervolts" the gridseed in someway (thats what the terminal says anyway) and then bam I got 100kh/s extra. You have to do some hardware messing around with also though,
I dont think Im allowed to post public links on this forum so pm me if you want the link.
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nemercry
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Vice versa is not a meal.
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May 04, 2014, 10:06:47 AM |
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here is the bridge voltmod for the blade. still untested, I'll have to physically check on the board for voltage =1 to be sure ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi61.tinypic.com%2F15hhklj.jpg&t=665&c=JrECBXfUFH4wlA) Which resistor value will then be enabled ? 36k resistor ? Also, where is it located ? Regards
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Xer0
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
May 04, 2014, 10:44:09 AM |
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here is the bridge voltmod for the blade. still untested, I'll have to physically check on the board for voltage =1 to be sure ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi61.tinypic.com%2F15hhklj.jpg&t=665&c=JrECBXfUFH4wlA) thanks! great work
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Blisk
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May 04, 2014, 11:14:05 AM Last edit: May 04, 2014, 11:29:36 AM by Blisk |
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So this one is withouth changing resistor. I am more interested to adding mosfets to Q6 to Q8 what is exact mark of Q6 to Q8, here on pic is unreadable?
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J4bberwock (OP)
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May 04, 2014, 11:56:03 AM Last edit: May 04, 2014, 04:05:07 PM by J4bberwock |
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Which resistor value will then be enabled ? 36k resistor ? Also, where is it located ?
Regards
resistors are as follow from left to right on my picture 33k (the one I replaced for the first mod) 27k 33k 36k <- should use this one when bridging So this one is withouth changing resistor. I am more interested to adding mosfets to Q6 to Q8 what is exact mark of Q6 to Q8, here on pic is unreadable?
it's been discussed on this thread. they are 2x IRF5300 and one IRFH5302 I ordered IRFH7004 to try as a direct replacement and IRFB7437PBF for an homemade powerboard
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Blisk
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May 04, 2014, 01:35:03 PM |
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I see that replacament should work 7004 have much more ampers. But didn't find 5002
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Xer0
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May 04, 2014, 02:16:14 PM |
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5002? on the Pic from Cryptomining-Blog its 5301
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wolfey2014
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May 04, 2014, 02:32:25 PM |
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has already someone found the "vMod 1" aka bridge-two-jumpers?
I checked on the schematics of the pod, so, basically, you are bridging R333, and then you enable voltage=1 all the time by bridging R337. They are connected to pin 13 and 12 of the up1509, so quite easy to find. I'll have a look after breakfast. I'll check on the PCB, but not sure I'll mod this one. I managed to get 2 hw errors on 8 hours @ 7.2MH/s with my custom cooling. I'll buy a second one to try. [2014-05-04 08:14:07] Runtime: 8 hrs : 48 mins : 59 secs [2014-05-04 08:14:07] Average hashrate: 7.2 Megahash/s [2014-05-04 08:14:07] Solved blocks: 0 [2014-05-04 08:14:07] Best share difficulty: 1.5M [2014-05-04 08:14:07] Share submissions: 2352 [2014-05-04 08:14:07] Accepted shares: 2337 [2014-05-04 08:14:07] Rejected shares: 15 [2014-05-04 08:14:07] Accepted difficulty shares: 3346304 [2014-05-04 08:14:07] Rejected difficulty shares: 20864 [2014-05-04 08:14:07] Reject ratio: 0.6% [2014-05-04 08:14:07] Hardware errors: 2 [2014-05-04 08:14:07] Utility (accepted shares / min): 4.42/min Hey J4, can you post some pics of your modded cards with heat sinks etc? Sounds like you're getting close to the final design stage. Good work! I just hope there's not too much to mod in order to achieve stable overclocks. Wolfey2014
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I Modify Miners Professionally! PM me for details!
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J4bberwock (OP)
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
May 04, 2014, 04:04:45 PM |
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I see that replacament should work 7004 have much more ampers. But didn't find 5002
sorry, IRFH5302 on my board
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Blisk
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
May 04, 2014, 04:21:37 PM |
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I see that replacament should work 7004 have much more ampers. But didn't find 5002
sorry, IRFH5302 on my board Thanks I already check it, I don't have board at home ![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
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xcooling
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May 04, 2014, 04:38:47 PM |
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looking for good replacements of FB29 and FB30 , any suggestions ?
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Blisk
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![](https://bitcointalk.org/Themes/custom1/images/post/xx.gif) |
May 04, 2014, 05:19:37 PM |
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looking for good replacements of FB29 and FB30 , any suggestions ?
use regular one
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J4bberwock (OP)
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May 04, 2014, 09:06:24 PM |
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as promised, some more pics The blade in action with the prototype cover ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi61.tinypic.com%2Fdetvnq.jpg&t=665&c=ZMEdNuyK_7A4dw) cover removed ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi57.tinypic.com%2F264rj1c.jpg&t=665&c=1ek0RbihSVPP_A) the cooling of the chips. ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi59.tinypic.com%2Fjsbqzp.jpg&t=665&c=85vtp2OVwt5MrQ) closer view of both pcb modded I used the secondary location on one of the boards because my 0805 resistor was keeping shorting with the nearest empty pad. still needs some cleaning of the pads on this one ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi59.tinypic.com%2F28a0qz5.jpg&t=665&c=e4ATBUMXi3rjPw) on the second board, the resistor is just where the 0603 33K was ![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi62.tinypic.com%2F1593f6.jpg&t=665&c=Vn8F7BGYeQ37BQ) and in case you want to try the bridge voltmod, here are the places to connect for pin 12 and pin 13 of up1509. As usual, you do it at your own expense. Beware you can fry your blade.![](https://ip.bitcointalk.org/?u=http%3A%2F%2Fi58.tinypic.com%2Fxnrg29.jpg&t=665&c=ZSLHh96tAMkk-Q)
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Blisk
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May 04, 2014, 09:20:59 PM |
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Ok for now you have just replaced resistor 33k for which one? Let us know when you changed mosfets. you didn't put coolers on Q6 to Q8?
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J4bberwock (OP)
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May 04, 2014, 09:28:10 PM |
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Ok for now you have just replaced resistor 33k for which one? Let us know when you changed mosfets. you didn't put coolers on Q6 to Q8?
33k replaced with 43k you can see small dissipators on top of Q6 Q7 Q8 on the upper right corner of the third picture. plus larger ones on the back side of the pcb under the mosfets and choke
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Blisk
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May 04, 2014, 09:34:29 PM |
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ok thank you, are they enough for cooling or they are really hot, like on the edge? You get now from one blade like 7,2 Mhash?
I will try this as soon as I get thermal glue
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