Topic: GridSeed 5-chip USB miner voltage mod - page 44. (Read 157001 times)

I'm not getting 0.1ltc per pod no. if someone does please give me the recipy 

It would be interesting to find out if our Gridseed 5 chip ASICs can be pushed to a higher level of performance in dual mode.

My take on things so far:

Dual mode does better than un-modded single mode.
1st volt mod basically equaled things out depending on your power costs.
2nd volt mod (single resistor) beats dual mode. Almost 25% better by my observations / calculations factoring in power costs.  I don't have any modded Gridseeds so I'm basing this on reported KH/s.

Is there a mod that could push dual mode in front or at least equal the income from the single resistor / single mode volt mod?

Unmodded Gridseeds can do 8.5 GH/s SHA-256 & 300 KH/s Scrypt in dual mode at 750 MHz which equates to .078 LTC per day per pod right now. You'd have to push it to something like 10 GH/s SHA-256 & 375 KH/s Scrypt or 9.5 GH/s SHA-256 & 400 KH/s Scrypt to equal the the single resistor / single mode volt mod mining income.

Are you guys with volt modded pods getting close to 0.1 LTC per pod per day right now?

IMO just go for scrypt, to much watt for Dual and returns too low. better run scrypt with latest 47k mod on high frequency

Right now I only have the one running at 1225Mhz.  I have another one coming in a few days which I haven't fully decided if I want to just do the bridge and dual mine, or do the resistor swap and only scrypt mine.  I'll definitely mill out that part of the heatsink so it makes full contact with all 5 of the gc3355 chips though.

Super nst6563,...Do you have just 1 ...@1225MHz... or more...?

BTC mining with this...I am not sure that it will pay for electric to run it...

Actually, with bfgminer_gridseed_pr3 and  bfgminer-3-99-0-windows-clean You can. 
Syntax is either using serial number:
or path:

Well...with the bridge you can probably still dual mine sha256 and scrypt if that matters to you.  I know with the resistor mod, you can't (specifically...the 3022m mosfet HIGHLY disagrees with it). 

Personally, I did the resistor mod, milled out part of the heatsink so it makes full contact with all 5 gc3355 chips, and ditched the crappy thermal pad for some decent thermal paste.  I'm running at 1225Mhz (521Kh/s) with 0 hardware errors now.  Scrypt only - I don't dual mine with this one.  I might dual mine with another just so I can get the fraction of a btc out of a pool.

what is better in long term in gredseed??
only bridge (1.25v) +2w 1000mhz
or replace the resistor 33kohm->47kohm approx +10w 1150mhz

I have noticed a few people use girnyau's cgminer which I'm using on a pi and so far no problems.  Its easy enough to find with google. use --gridseed-freq *GRIDSEEDSERIAL*=*freqvalue*

I also had problems with bfgminer submitting shares.  It would show hashrate, just would never see any shares accepted.  Right now I'm using cgminer and it runs pretty solid.  I've been kicking around trying cpuminer, but cgminer is working so well right now I'd hate to do something and screw it all up.

I am using Cgminer on W7/64 since day 1...Rock solid with me...I CAN set not only individual miners, but even individual chips speed within the particular Gridseed...

Zadig driver is absolute MUST...have to change STMicroelecrtonics driver to => Win USB driver v.xx.xx.xx...

I am un-plugging the USB cable first...power Off-On on the miners...wait like 30-60sec...plug the usb cable back to the computers USB...start Cgminer...bat file works for me...immediately recognizes them... and is hashing right away...no problems for days...

Hope will help...

ZiG

Edit :

Make sure that you are using USB 2.0 port...NOT USB 3.0...on the back of your PC...

Well, I am used to cgminer, and I see that you can adjust each one individually with that. But I can't seem to get it to see my miners.
It seems pretty buggy.
Is there some trick or step I am missing to get CGminer to work with windows?
I use it for my GPUs and it has always been rock solid. Just no luck with these gridseeds.

You can actually. I haven't found how to set only 1 with many units connected to the same instace but you can run this command here:


@\\.\COM3 is the COM port for your device.

Kinda running late, I'll expand more when I get back from work.

I tried cpminer. I think it was working, but since I am not familiar with it, I couldn't tell for sure.
Also, since I can't see the speed, how do you know if the mod is working?
Seems like bfgminer only works on unmodded gridseeds.

Hi,

you cannot set individual speed on BFg only CGminer and Cpuminer

All I can tell you is that I also had problems with BFG had several plugged in and only some of them submitting shares while hashrate was displayed in bfg corectly. So I went CPUminer, it's a pity we cant see the speed in CPUminer and do not understand someone has yet fixed this but it works great.

Hi All.  Thanks for all the information! Lots to go through but I managed to Mod my first gridseed today.
I have 10, so I just did one to start with. I am having some trouble though...

Any help would be greatly appreciated.
So I have 10, and with BGFminer I can see all 10, but can't figure out how to raise the clock rate on just the one I modded.
So I tried just plugging in the 1 I modded, and raise the clock to 1150. It goes up to just around 500kh/s, as I expected, but never seems to accept any hashes. I can't figure out why.

Also, I saw some pages back, someone who has around 80 of these running and is able to adjust the clock rate on any individual gridseed.
That is what I need to do, as I plan to mod each one at a time when I can find the time to do it.
His screen looks like he is using cgminer, but I can't seem to get that working for me, even with the zadig drivers, it never finds the asic.
Plus I have heard that most folks are having trouble with cgminer as well.

Any idea why the modded asic won't accept any shares? Also, is there a better mining software that I could use to have better control over individual devices? Or maybe a config I could use in BFGminer to do the same?

I am very confused at this point, as this looked like an easy Mod, but I can't seem to get it working.
I kniw I did the Mod correctly, as I am an electronics engineer and have been soldering all my life, and have a professional rework station with hot air and fine soldering iron, we use 0402 components all the time where I work. So I don't think there is a problem with the mod, it must be software based.
Please let me know what I am doing wrong, or what I should be doing to get this to work.

Thanks!

For me, if you have only a few miners CPUminer.

It works great for me

what is the better miner (more share) cpuminer or girnyau cgminer??

Yeah really who gives a shit what it looks like? If it works that's what matters and wolfey is trying to charge $40 to mod one unit.... I think this guy is crazy. I did all 14 of mine and they weren't pretty but they work and that's honestly all I cared about

I've been able to run 1200Mhz stable (around 510Kh/s-515kh/s with 0 hw errors).  I ran it last night at 1250, but it has more than 20 hw errors at 531Kh/s.  Before doing this I was only able to run at 1125Mhz, I could hit 1150 but accumulate hw errors.