GridSeed 5-chip USB miner voltage mod

[wolfey2014]

will this mod work with hashra controla?

The mod will work for any mining software, you just need to change the chip frequency.

Nervous to attempt, but an extra 100 khsh across 20 miners translates to an extra 2Mhsh. Anyone want to share any best practices aside from OP?

I did the 49.9k mod on all 14 of my gridseeds and I'm glad I did. I'm running CPUminer and all of my chips are stable at 1200mhz and up. The pool and CPUminer and both reporting very close to each other so I'm happy!!

Thanks for the follow up; can you list the tools/hardware you used and your new hash rate? Also if possible, anyone know the page in thus thread where I find the 49.9k mod offhand?

Go back to page 1, search for - wolfey2014 - all my posts will come up, and all shall be revealed to you

Thanks Wolfey,

I'm still a bit confused though:

what's the better mod between these two below? The guy I have doing it is only familiar with 47k mod.

VMOD 3: (47k): Up to freq=1175 (500kH/s poolside average)  30 +/-4 watt
VMOD 3: (49.9k): Up to freq=1200 (510kH/s poolside average)   33 +/-4 watt

i have used 48k resistors (measured and selected from a pack of 5% 47k 1/8W resistors) to mod my pods and they are running at 1200MH/s with almost zero hardware errors with a power consumption of 25w~ per each measured with a kilowatt meter. power supply is a 850 silver.
i don't know who got this readings but its not consuming 30+ watts.

Right. 30+W sounds ridiculous if not suspicious....
Yah, 48k 5% tol is close enough I recon as long as that 5% drift doesn't go the wrong way i.e. down below 45.6k which is useless for overclocking above 950 or 50.4k which is a tad too high but not harmful to other than power consumption hence profit.
I might get lazy on this batch and do the same thing though. It's mine (punn) anyway

well you have to measure and get the value you want from a pack of low precision resistors.
what you mean 5% drift?
each 47k 5% resistors will range between 45.x and 51.x when producing them, but its value is not going to be a variable value after that. each resistor will have a fixed value between 45.x and 50.x
A 48kohms 5% resistor measured by a DVM will remain 48k ohms unless influenced by temperature or other reasons. It should not be mistaken that the value varies randomly from 45k to 51k (5% difference)

You answered your own question....

your reply didn't sound like you knew this before.

technoese

[wolfey2014]

will this mod work with hashra controla?

The mod will work for any mining software, you just need to change the chip frequency.

Nervous to attempt, but an extra 100 khsh across 20 miners translates to an extra 2Mhsh. Anyone want to share any best practices aside from OP?

I did the 49.9k mod on all 14 of my gridseeds and I'm glad I did. I'm running CPUminer and all of my chips are stable at 1200mhz and up. The pool and CPUminer and both reporting very close to each other so I'm happy!!

Thanks for the follow up; can you list the tools/hardware you used and your new hash rate? Also if possible, anyone know the page in thus thread where I find the 49.9k mod offhand?

Go back to page 1, search for - wolfey2014 - all my posts will come up, and all shall be revealed to you

Thanks Wolfey,

I'm still a bit confused though:

what's the better mod between these two below? The guy I have doing it is only familiar with 47k mod.

VMOD 3: (47k): Up to freq=1175 (500kH/s poolside average)  30 +/-4 watt
VMOD 3: (49.9k): Up to freq=1200 (510kH/s poolside average)   33 +/-4 watt

i have used 48k resistors (measured and selected from a pack of 5% 47k 1/8W resistors) to mod my pods and they are running at 1200MH/s with almost zero hardware errors with a power consumption of 25w~ per each measured with a kilowatt meter. power supply is a 850 silver.
i don't know who got this readings but its not consuming 30+ watts.

Right. 30+W sounds ridiculous if not suspicious....
Yah, 48k 5% tol is close enough I recon as long as that 5% drift doesn't go the wrong way i.e. down below 45.6k which is useless for overclocking above 950 or 50.4k which is a tad too high but not harmful to other than power consumption hence profit.
I might get lazy on this batch and do the same thing though. It's mine (punn) anyway

well you have to measure and get the value you want from a pack of low precision resistors.
what you mean 5% drift?
each 47k 5% resistors will range between 45.x and 51.x when producing them, but its value is not going to be a variable value after that. each resistor will have a fixed value between 45.x and 50.x
A 48kohms 5% resistor measured by a DVM will remain 48k ohms unless influenced by temperature or other reasons. It should not be mistaken that the value varies randomly from 45k to 51k (5% difference)

You answered your own question....

your reply didn't sound like you knew this before.


edit :

just noticed that you have bold influenced by temperature
so you think that the given tolerance value will save the resistor from heart drift ?
nope tolerance means precision of the resistor value in production process. Variation of resistance with temperature is independent from tolerance.

You're off....

[anarchyx914]

Does anyone know the Resistor value of the R43 resistor? Its two spots below R52...

I accidentally took it off of one of my gridseeds when removing R52. Its kind of burnt and probably not working so I will order another to replace it.

[J4bberwock]

Does anyone know the Resistor value of the R43 resistor? Its two spots below R52...

I accidentally took it off of one of my gridseeds when removing R52. Its kind of burnt and probably not working so I will order another to replace it.

if it's the one on the left of R52 (R139), you shouldn't need it, it's only used when switching the pod to different modes by software.
Just try the pod without it.
BTW, it should be R63, so 30k. you can replace it with your old R52(R139) that is 33k. The pod should work a little faster than 350Kh/s if you switch to this predefined mode.
the real R43 isn't connected anyway.

picture would have been better, but after checking the actual PCB, you are looking for R63, so 30K, or your old 33K or you can even leave it without the resistor, it should work

[gbyg]

Does anybody know what this two parts(yellow marked)? my 5volt mode with 49.9k resistor swapped pot is blown(13 out of 20 GS) after 3 days 24/7 run for unknown reason. windows still recognize the com port and 5 chip still visible in cpuminer. if anybody knows the value of this two i might try to change this to see if it works.

I think they are marked as F824 & F823

I am trying to identify the shorts in the pcb board , so far I found 3 capacitor might be short or faulty which is in yellow marked. i believe they are C9, C12 and C205. can somebody double check the value and the label for me please.

C9=10uf/16v
C12=220uf/25v
C205=22uF

3 of this capa looks same size, are they C1206 footprint?

[happydaze]

gbyg - When I check the .brd file in Allegro Viewer it looks like the two near E04M-330-16v are the same:

Reference Designator: C9
Package Symbol:       C1206
Component Class:      IC
Device Type:          C0805_C1206_10UF/16V
Value:              10uF/16v
Designator: F333

Reference Designator: C10
Package Symbol:       C1206
Component Class:      IC
Device Type:          C0805_C1206_10UF/16V
Value:              10uF/16v
Designator: F334

and the one over by K3-OCV-1500-2.5v is:

Reference Designator: C205
Package Symbol:       C1206
Component Class:      DISCRETE
Device Type:          CAP NP_C1206_DISCRETE_22UF
Value:              22uF
Designator: F206

C12 is that large capacitor labeled E04M-330-16v on the .brd file that you can download from Github.


If you haven't already, make sure to inspect around all the pins the Gridseed GC3355 chips.  The solder under the center one on mine oozed out when I messed up one pod testing it after a volt mod.
    

[tc61]

Hello,

Can someone tell me what the resistor value is of the resistor that the black fan wire crosses over in the picture above. Its between the usb plug and the gold post. I have one that is toast.

TC

[Bezinga]

will this mod work with hashra controla?

The mod will work for any mining software, you just need to change the chip frequency.

Nervous to attempt, but an extra 100 khsh across 20 miners translates to an extra 2Mhsh. Anyone want to share any best practices aside from OP?

I did the 49.9k mod on all 14 of my gridseeds and I'm glad I did. I'm running CPUminer and all of my chips are stable at 1200mhz and up. The pool and CPUminer and both reporting very close to each other so I'm happy!!

Thanks for the follow up; can you list the tools/hardware you used and your new hash rate? Also if possible, anyone know the page in thus thread where I find the 49.9k mod offhand?

There's a nice guide on how to do the 49.9k mod here.

[michelem]

Hello guys,
if you wanna give a try to my new project "Minera", feedbacks are very welcome!

Minera is the "scripta"-like web interface specific for cpuminer-gc3355.

Still lacks an img to put in your SD but I hope to create it in the next few days.

In the meantime if you have a web server installed (for example if you are running scripta), just follow the minera install skipping the web server part and you should be ready.

It could have a lot of bugs because this is the very first time I release it to the public.

Please le me know: https://github.com/michelem09/minera

[wolfey2014]

Hello guys,
if you wanna give a try to my new project "Minera", feedbacks are very welcome!

Minera is the "scripta"-like web interface specific for cpuminer-gc3355.

Still lacks an img to put in your SD but I hope to create it in the next few days.

In the meantime if you have a web server installed (for example if you are running scripta), just follow the minera install skipping the web server part and you should be ready.

It could have a lot of bugs because this is the very first time I release it to the public.

Please le me know: https://github.com/michelem09/minera

What's different or improved in your program vs Hashra Controlla? Your GUI looks pretty much the same as the original Controlla program.

[happydaze]

Hello,

Can someone tell me what the resistor value is of the resistor that the black fan wire crosses over in the picture above. Its between the usb plug and the gold post. I have one that is toast.

TC

This one?



It is a Ferrite Bead according to the downloadable docs.

Reference Designator: FB26
Package Symbol:       FB0805
Component Class:      IC
Device Type:          FERRITE BEAD_FB0805_300OHM@100M
Value:              300ohm@100MHz,1.5A
Designator: F174

Get the .brd file here: https://github.com/gridseed/usb-miner/tree/master/hardware
and a viewer here: http://www.parallel-systems.co.uk/support/free-viewers  (more features but large download)
another here: http://wr2440.googlecode.com/files/Allegro%20SIP%20MCM%20FREE%20Viewer16.5.EXE.7z (less features)
I use both.

[michelem]

Hello guys,
if you wanna give a try to my new project "Minera", feedbacks are very welcome!

Minera is the "scripta"-like web interface specific for cpuminer-gc3355.

Still lacks an img to put in your SD but I hope to create it in the next few days.

In the meantime if you have a web server installed (for example if you are running scripta), just follow the minera install skipping the web server part and you should be ready.

It could have a lot of bugs because this is the very first time I release it to the public.

Please le me know: https://github.com/michelem09/minera

What's different or improved in your program vs Hashra Controlla? Your GUI looks pretty much the same as the original Controlla program.

Hello,
well I think the main difference is that Hashra Controla doesn't support CPUMiner-gc3355 while it works over cgminer (if I'm not wrong, I didn't know pretty much about it).

So you cannot use amazing features such as autotune or per device freq, while with Minera and cpuminer by Sandor you can.

I also have done some system optimizations cause I found other minera-like app very complex and system "addictive", so I tried to use only the strictly necessary to have a web app more flexible.

Minera doesn't inherit nothing from other similar app, it was written totally from scratch, it only looks like them but it has a completely rewritten "engine".

Then, I have in mind a lot of new widgets to add to the dashboard (like CPU/Mem stats, Profit calculator based on current hashrate and much more) and a more comfortable settings page to take full advantage of cpuminer.

Finally, it is written over a MVC Framework like Codeigniter so it's easier to manage and code.

Hope you like it.

[tc61]

HappyDaze, would this be a good replacement?

http://www.digikey.com/product-detail/en/MI0805L301R-10/240-2391-1-ND/806751

thx

[happydaze]

I don't know enough about this stuff to answer.  The Gridseed docs show 1.5A and the one in the link is 2A I think. Someone else here with more knowledge will be able to answer your question.

This is what the Allegro software shows.  The part I clicked on is highlighted in yellow.

[ZiG]

I don't know enough about this stuff to answer.  The Gridseed docs show 1.5A and the one in the link is 2A I think. Someone else here with more knowledge will be able to answer your question.

This is what the Allegro software shows.  The part I clicked on is highlighted in yellow.

Hey Happydaze,

Which version of Allegro are you using...? ...and which Gridseed's file is the PCB board design...?

Thanks buddy,

ZiG

[happydaze]

I use two viewers:

http://www.parallel-systems.co.uk/support/free-viewers  (more features but large download)
http://wr2440.googlecode.com/files/Allegro%20SIP%20MCM%20FREE%20Viewer16.5.EXE.7z (less features)

The large download is the full suite 1.2gb or so and the small download is 17mb.

Get the GC3355 USB_pcb_V1.brd file here: https://github.com/gridseed/usb-miner/tree/master/hardware

The full suite allows you to click on a reference and it shows all linked components etc.

[dyland]

will this mod work with hashra controla?

The mod will work for any mining software, you just need to change the chip frequency.

Nervous to attempt, but an extra 100 khsh across 20 miners translates to an extra 2Mhsh. Anyone want to share any best practices aside from OP?

I did the 49.9k mod on all 14 of my gridseeds and I'm glad I did. I'm running CPUminer and all of my chips are stable at 1200mhz and up. The pool and CPUminer and both reporting very close to each other so I'm happy!!

Thanks for the follow up; can you list the tools/hardware you used and your new hash rate? Also if possible, anyone know the page in thus thread where I find the 49.9k mod offhand?

Go back to page 1, search for - wolfey2014 - all my posts will come up, and all shall be revealed to you

Thanks Wolfey,

I'm still a bit confused though:

what's the better mod between these two below? The guy I have doing it is only familiar with 47k mod.

VMOD 3: (47k): Up to freq=1175 (500kH/s poolside average)  30 +/-4 watt
VMOD 3: (49.9k): Up to freq=1200 (510kH/s poolside average)   33 +/-4 watt

i have used 48k resistors (measured and selected from a pack of 5% 47k 1/8W resistors) to mod my pods and they are running at 1200MH/s with almost zero hardware errors with a power consumption of 25w~ per each measured with a kilowatt meter. power supply is a 850 silver.
i don't know who got this readings but its not consuming 30+ watts.

What controller are you using? I'm on hashra controla.

[ZiG]

I use two viewers:

http://www.parallel-systems.co.uk/support/free-viewers  (more features but large download)
http://wr2440.googlecode.com/files/Allegro%20SIP%20MCM%20FREE%20Viewer16.5.EXE.7z (less features)

The large download is the full suite 1.2gb or so and the small download is 17mb.

Get the GC3355 USB_pcb_V1.brd file here: https://github.com/gridseed/usb-miner/tree/master/hardware

The full suite allows you to click on a reference and it shows all linked components etc.

Thanks buddy,

Are you on Mac...?

[happydaze]

No, I'm using windows.

If you or anyone here has or downloads the larger Allegro package and get a moment could you lift the center chip and tell me if you think all the DGND points under the chip need to be connected.  You can drag the chip to the side and see all the connections. That's my latest plan to try to bring two more chips back online.  I tried to build a solder pad there but it won't stick.  Next is to try a conductive paint or I'll use small wires to connect all the points.  

I'm looking for some opinions on whether all the DGND points under the chip (the center chip has been removed on this pod) need to be connected and if a conductive paint would be good enough.  The two chips that are working are very happy at 1200Mhz, steady 200 kh/s for days now.

[wolfey2014]

I use two viewers:

http://www.parallel-systems.co.uk/support/free-viewers  (more features but large download)
http://wr2440.googlecode.com/files/Allegro%20SIP%20MCM%20FREE%20Viewer16.5.EXE.7z (less features)

The large download is the full suite 1.2gb or so and the small download is 17mb.

Get the GC3355 USB_pcb_V1.brd file here: https://github.com/gridseed/usb-miner/tree/master/hardware

The full suite allows you to click on a reference and it shows all linked components etc.

Thanks buddy,

Are you on Mac...?

Thanks Buddy! This ought to come in handy!