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pepto
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November 16, 2015, 06:52:09 AM
Last edit: November 16, 2015, 07:12:58 AM by pepto |
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Re: GekkoScience Compac BM1384 Stickminer Official Support Thread
October 25, 2015, 06:34:57 PM
Reply with quote #560
By reducing the resistance of the little unmarked resistor above left of the pot, you can increase the adjustable voltage range. Our hacked-up test stick "Max" has been altered to run between about 615 and 900 millivolts (and ran stable at 488MHz before my hub wasn't good enough to keep up). In order to keep power stable at higher draws, you'll want to make sure your USB hub has very low impedance on the power rails and make sure the voltage at the Compac always stays above 4V even during brief high-current surges. The input capacitors buffer out some of that but at very high current draw (400MHz/800mV is about 12.5A but the buck circuit is good for about 17A before any parts are out of spec) the input voltage may sag and cause havoc to the power controller. Beefy input lines, preferably with a big capacitor near the socket, will help quite a bit in pushing these things farther.
That's a big friggin' heatsink. Awesome.
Report to moderator
Is this legit for the OC club, cause I can get one made that is twice as big?
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zOU
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November 16, 2015, 07:45:59 AM |
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Is this legit for the OC club, cause I can get one made that is twice as big?
as long as it's air cooled I believe it is  |
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Landy1264
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Tip: 1JBSwRgm7iMzc7uyhnJdxH7hSECdJkdMoj
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November 16, 2015, 08:53:51 AM
Last edit: November 16, 2015, 10:10:16 AM by Landy1264 |
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Is this legit for the OC club, cause I can get one made that is twice as big?
as long as it's air cooled I believe it is I would prefer everything unmodded. Stock heatsink, stock voltage ( up to .8V) and power only over the usb-plug ... Maybe we wait until more members got their Y-cable ready.. We should name the contest somehow like "burnin' down the house", "eternal flame", "the roof is on fire"!  |
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pepto
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November 16, 2015, 12:12:52 PM |
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Is this legit for the OC club, cause I can get one made that is twice as big?
as long as it's air cooled I believe it is I would prefer everything unmodded. Stock heatsink, stock voltage ( up to .8V) and power only over the usb-plug ... Maybe we wait until more members got their Y-cable ready.. We should name the contest somehow like "burnin' down the house", "eternal flame", "the roof is on fire"! Yes, I have to agree. Let's keep it clean for a while. There's plenty of time to burn things down later. |
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Jake36
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November 16, 2015, 02:21:00 PM |
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Is this legit for the OC club, cause I can get one made that is twice as big?
as long as it's air cooled I believe it is I would prefer everything unmodded. Stock heatsink, stock voltage ( up to .8V) and power only over the usb-plug ... Maybe we wait until more members got their Y-cable ready.. We should name the contest somehow like "burnin' down the house", "eternal flame", "the roof is on fire"! Yes, I have to agree. Let's keep it clean for a while. There's plenty of time to burn things down later. I think the first 24hr over-clock run was/is only stock heat sink and air cooled. Unless I missed a post or 2. Then sometime later, a second over-clock 24hr run, that is/was "any thing goes". |
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philipma1957 (OP)
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'The right to privacy matters'
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November 16, 2015, 03:35:43 PM |
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Is this legit for the OC club, cause I can get one made that is twice as big?
as long as it's air cooled I believe it is I would prefer everything unmodded. Stock heatsink, stock voltage ( up to .8V) and power only over the usb-plug ... Maybe we wait until more members got their Y-cable ready.. We should name the contest somehow like "burnin' down the house", "eternal flame", "the roof is on fire"! Yes, I have to agree. Let's keep it clean for a while. There's plenty of time to burn things down later. I think the first 24hr over-clock run was/is only stock heat sink and air cooled. Unless I missed a post or 2. Then sometime later, a second over-clock 24hr run, that is/was "any thing goes". the first one would be unmodded air cooled. then in dec anything goes. then added a second prize high share---- for those that want in but may not have the means to really go high . Asking about y-cables how are we doing? who needs a y-cable? usa based. |
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hedgy73
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November 16, 2015, 05:35:02 PM |
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Does the unmodded mean stock 150MHz frequency or can that be whatever? Its the voltage you mean unmodded?
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Landy1264
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November 16, 2015, 05:49:27 PM |
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Does the unmodded mean stock 150MHz frequency or can that be whatever? Its the voltage you mean unmodded?
I think we can go up to .8Vs and as much MHz you can get without changing heat sink or so. More tuning than modding ... |
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hedgy73
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November 16, 2015, 06:30:12 PM |
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Does the unmodded mean stock 150MHz frequency or can that be whatever? Its the voltage you mean unmodded?
I think we can go up to .8Vs and as much MHz you can get without changing heat sink or so. More tuning than modding ... Ok great thanks that's what I thought . Think I'll just be going for the best share contest, I dont know anything about volt modding to attempt the most shares. Wouldn't want to damage my sticks...  |
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Jake36
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November 16, 2015, 06:36:59 PM |
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Does the unmodded mean stock 150MHz frequency or can that be whatever? Its the voltage you mean unmodded?
I think we can go up to .8Vs and as much MHz you can get without changing heat sink or so. More tuning than modding ... Yes, what ever MHz you can get. I would have to read back through the build and review threads, but I think .8V, if I remember right, is about it for the stick's without changing (modifying) a resistor. |
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Mikestang
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November 16, 2015, 10:24:58 PM |
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Does the unmodded mean stock 150MHz frequency or can that be whatever? Its the voltage you mean unmodded?
Well it wouldn't be much of an overclock contest if you couldn't overclock the stick, now would it?  |
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pepto
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November 16, 2015, 10:47:56 PM |
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Just an observation for anyone tweaking their frequency. I went from xxx to xxx+5 and my hash rate dropped dramatically. Then upped it to +10 and everything came back. I will no longer assume that linear necessarily means linear.
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notlist3d
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November 17, 2015, 12:51:15 AM |
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Just got home from some family business I saw my PI is down. I will get it back up in a few hours or less.
Thanks phil for running it.
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philipma1957 (OP)
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November 17, 2015, 01:38:38 AM |
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I think we will do it on Sat the 21st. anymore then the 7 guys below? Please post a name.
1 hedgy73
2 vapourminer
3 Landy1264
4 Jake36
5 pepto
6 HerbPean <--
7 Guruclef <--
8
9
join and not run your stick hard enough to win the oc contest (unless everyone crashes) but still win with a high share.
I want to give it a shot. Also I added HerbPean to the list since he just posted he wanted in. |
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aarons6
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November 17, 2015, 01:56:48 AM |
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I think we will do it on Sat the 21st. anymore then the 7 guys below? Please post a name.
1 hedgy73
2 vapourminer
3 Landy1264
4 Jake36
5 pepto
6 HerbPean <--
7 Guruclef <--
8 aarons6
9
join and not run your stick hard enough to win the oc contest (unless everyone crashes) but still win with a high share.
I want to give it a shot. Also I added HerbPean to the list since he just posted he wanted in. i got my sticks in the mail today.. i set them up on 1JiWuyX94wrCr7JhkAn7x5qNMCEef1KhqX.aarons6stick ill play around with th em and prob join in on this OC club too.. |
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philipma1957 (OP)
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Activity: 4116
Merit: 7854
'The right to privacy matters'
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November 17, 2015, 02:31:10 AM
Last edit: November 17, 2015, 05:20:19 PM by philipma1957 |
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I think we will do it on Sat the 21st. anymore then the 7 guys below? Please post a name.
1 hedgy73
2 vapourminer
3 Landy1264
4 Jake36
5 pepto
6 HerbPean <--
7 Guruclef <--
8 aarons6
9
join and not run your stick hard enough to win the oc contest (unless everyone crashes) but still win with a high share.
I want to give it a shot. Also I added HerbPean to the list since he just posted he wanted in. i got my sticks in the mail today.. i set them up on 1JiWuyX94wrCr7JhkAn7x5qNMCEef1KhqX.aarons6stick ill play around with th em and prob join in on this OC club too.. i will take yours offline meaning the hosted ones. and yours in your setup are running nicely http://solo.ckpool.org/workers/1JiWuyX94wrCr7JhkAn7x5qNMCEef1KhqX.aarons6stick |
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Mikestang
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November 17, 2015, 11:12:21 PM |
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I think we will do it on Sat the 21st.
anymore then the 7 guys below?
I will try my hand at the contest. Does it matter what time we start on Saturday? I sleep late on the weekends, so my 24h would be dependent on that. Is there a buy in or anything? 0.01 btc or something would be fun, split it between the two winners. |
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aarons6
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November 17, 2015, 11:26:51 PM |
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not sure i can make the deadline for the OC contest..
i am going to have to setup a linux box and compile cgminer-gekko
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philipma1957 (OP)
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Activity: 4116
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'The right to privacy matters'
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November 17, 2015, 11:34:45 PM |
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I think we will do it on Sat the 21st.
anymore then the 7 guys below?
I will try my hand at the contest. Does it matter what time we start on Saturday? I sleep late on the weekends, so my 24h would be dependent on that. Is there a buy in or anything? 0.01 btc or something would be fun, split it between the two winners. I have been thinking about start times. they can be staggered. lets say you post a 11 am sat morning screen shot. showing the cgminer start or the bfg miner start. for you to win the 24 hour over clock contest you post back 24 hours later and show the same cgminer we figure you total shares and thats is you over clock number. at the same time we list your high share that is you number for the second contest. high share. because we have the 24 hour clock it can be staggered time. |
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vapourminer
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what is this "brake pedal" you speak of?
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November 18, 2015, 02:39:50 AM
Last edit: November 18, 2015, 03:12:47 AM by vapourminer |
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the staggered time sounds good to me. i was dreading getting up at midnight or something to do screenshots. and if not me then someone else getting up at some weird hour considering how spread out geographically we are.
only issue might be the later starters would know what hash rate to beat.. someone early on fires up at 350 mhz others who start later know thats the speed to beat.
of course anyone truly competitive will run at speeds just this side of flames no matter what anyone elses speed is heh
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