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Topic: ¤¤¤¤ gekkorun.de - Gekkoscience Fun-Run - compare your share ¤¤¤¤ - page 18. (Read 63655 times)

zOU
hero member
Activity: 728
Merit: 500
★ these are stars ★
The sustained higher Frequency makes it to Number One.  Grin

Rich

Nice !

I'm already maxing my superbpag hub with 6 aticks at 300Mhs Smiley
hero member
Activity: 588
Merit: 500
The sustained higher Frequency makes it to Number One.  Grin

Rich
sr. member
Activity: 432
Merit: 250
Save the past & use the future ©
My modified USB extension lead that I had patched 5V into burnt up Yesterday, so ran overnight on the 2nd Compac at 200MHz. Have just done a better job of connecting the 5V directly to the contacts on the USB socket so should be ok this time.  Smiley

Good news is that the improved 5V supply seems to be allowing operation at 400MHz without HW errors with a Core Voltage of 0.78V which is the max I can get to without changing a resistor. So will run at that for 24Hrs and see how we go?


Rich

Well things seem quite stable after a few Hours at 400MHz so I have pushed on to 425MHz, still at 0.77V core voltage and no HW errors. I briefly tried 450MHz but the Core Voltage died completely so that needs to be investigated.


Rich


Great news, Rich Smiley!!!
Thx for sharing!

andY
hero member
Activity: 588
Merit: 500
Well things seem quite stable after a few Hours at 400MHz so I have pushed on to 425MHz, still at 0.77V core voltage and no HW errors. I briefly tried 450MHz but the Core Voltage died completely so that needs to be investigated.


Rich

hero member
Activity: 588
Merit: 500
My modified USB extension lead that I had patched 5V into burnt up Yesterday, so ran overnight on the 2nd Compac at 200MHz. Have just done a better job of connecting the 5V directly to the contacts on the USB socket so should be ok this time.  Smiley

Good news is that the improved 5V supply seems to be allowing operation at 400MHz without HW errors with a Core Voltage of 0.78V which is the max I can get to without changing a resistor. So will run at that for 24Hrs and see how we go?


Rich
zOU
hero member
Activity: 728
Merit: 500
★ these are stars ★
For that you should search the support thread Smiley
sr. member
Activity: 432
Merit: 250
Save the past & use the future ©
No heatsink at the back (although I have some).

I've never tried over 310Mhs.

I've not tried more since I got the new heatsinks.

I'll probably give it a try at some point, but so far i'm quite happy Smiley
Ahh okay Smiley
But I´m very curious, to know, where is the max possible limit Smiley

andY
zOU
hero member
Activity: 728
Merit: 500
★ these are stars ★
No heatsink at the back (although I have some).

I've never tried over 310Mhs.

I've not tried more since I got the new heatsinks.

I'll probably give it a try at some point, but so far i'm quite happy Smiley
sr. member
Activity: 432
Merit: 250
Save the past & use the future ©
here's my setup:

6 compac sticks in a BFL 30Ghs enclosure
3 sticks per heatsink
1 superbpag switch
1 fan controller + 2 temp sensors

I will probably remove the right hand side cover so I can slide the right fan further away, I'll add a wire grill Smiley


Hey zOU,
nice, looks really, really great Cool!

Two questions about Smiley:
Did you also use heatsinks on every backside?
And what was your maximum (stable) Freq / Hashrate you ever reached with this setup?

Thx,
andY
zOU
hero member
Activity: 728
Merit: 500
★ these are stars ★
Thx, but I'm far from Jeff's record Smiley
sr. member
Activity: 280
Merit: 250


I like your custom heatsinks very much!

Oh man, you have a superbpag hub! I'm looking for such a hub for weeks now, but no shop will ship them to my country!  Huh

Superbpag:
https://bitcointalksearch.org/topic/m.14304103

heatsinks:
http://fr.aliexpress.com/item/100-40-20MM-2-pieces-High-quality-pure-aluminum-heat-sink-aluminum-radiator-fins-heatsink-Fin/32260966997.html

Perfect, thanks for the links, zOU!
Nice bestshare  Wink
zOU
hero member
Activity: 728
Merit: 500
★ these are stars ★


I like your custom heatsinks very much!

Oh man, you have a superbpag hub! I'm looking for such a hub for weeks now, but no shop will ship them to my country!  Huh

Superbpag:
https://bitcointalksearch.org/topic/m.14304103

heatsinks:
http://fr.aliexpress.com/item/100-40-20MM-2-pieces-High-quality-pure-aluminum-heat-sink-aluminum-radiator-fins-heatsink-Fin/32260966997.html
sr. member
Activity: 280
Merit: 250
here's my setup:

6 compac sticks in a BFL 30Ghs enclosure
3 sticks per heatsink
1 superbpag switch
1 fan controller + 2 temp sensors

I will probably remove the right hand side cover so I can slide the right fan further away, I'll add a wire grill Smiley


I like your custom heatsinks very much!

Oh man, you have a superbpag hub! I'm looking for such a hub for weeks now, but no shop will ship them to my country!  Huh
zOU
hero member
Activity: 728
Merit: 500
★ these are stars ★
here's my setup:

6 compac sticks in a BFL 30Ghs enclosure
3 sticks per heatsink
1 superbpag switch
1 fan controller + 2 temp sensors

I will probably remove the right hand side cover so I can slide the right fan further away, I'll add a wire grill Smiley

sr. member
Activity: 432
Merit: 250
Save the past & use the future ©

Cool  Smiley
Yeah they look really expensive. Conrad has some, but maybe they are cheap quality?
So the cooling capacity of a peltier element is the difference between the hot and cool sites? Say, if my Peltier has a temperature diffeence of 60° C, that's the cooling capacity?
I'm new to peltier  Wink

I like the idea of a mini solar array. For a single Gekko or R1 it's not that expensive. But the learning potential is huge.

@Cooling-Temp: Yes you´re right Smiley.
In a easy way you can say, it´s the max possible Temp difference between both module sides...

@Solar: ohh, thats not a big thing Wink.
Not too much to learn for Wink.
I´ll post asap the solution, pictures and HowTo´s...
If you´re interested in DIY, i´ll help you of course  Wink.

andY


sr. member
Activity: 280
Merit: 250
I really like your mods  Smiley
Hey andy, can you say how much energy do you have to put into the peltier element? Is this power efficient?
Do you have to put more energy into the peltier than into the gekko?   Cheesy
Hi minibit, thanks  Grin!

@Peltier:
yes, thats really an issue ... Undecided
The power consumption is depend on which kind of Peltier-Modul you use..
There are a couple of different sizes, Cooling/Heating power and prices Wink on the market.

I´ve used the most available and inexpensive 40x40 Peltier with 12V and 6A max
It´s hard, ´cause  it´s finally a max. Powerconsumption of ~72 Watts, but as used in my setup and regulated via controller
my Powermeter shows me max ~ 50W for Peltier & Fan together.

But it was only a first try, there are smaller Peltier-Modules with lower consumption (and higher prices Wink) on the market.
Next step will be to try it with a more efficient Module...  Wink

On the other side I have digged up an older project of me, where a miner could be completely supplied via a selfmade solarpower solution Wink
So I´ll take an other R1 of me soon to upgrade this and give it a try for a "Green-IT nature-friendly mining solution"  Grin

andY


Cool  Smiley
Yeah they look really expensive. Conrad has some, but maybe they are cheap quality?
So the cooling capacity of a peltier element is the difference between the hot and cool sites? Say, if my Peltier has a temperature diffeence of 60° C, that's the cooling capacity?
I'm new to peltier  Wink

I like the idea of a mini solar array. For a single Gekko or R1 it's not that expensive. But the learning potential is huge.
sr. member
Activity: 432
Merit: 250
Save the past & use the future ©
I really like your mods  Smiley
Hey andy, can you say how much energy do you have to put into the peltier element? Is this power efficient?
Do you have to put more energy into the peltier than into the gekko?   Cheesy
Hi minibit, thanks  Grin!

@Peltier:
yes, thats really an issue ... Undecided
The power consumption is depend on which kind of Peltier-Modul you use..
There are a couple of different sizes, Cooling/Heating power and prices Wink on the market.

I´ve used the most available and inexpensive 40x40 Peltier with 12V and 6A max
It´s hard, ´cause  it´s finally a max. Powerconsumption of ~72 Watts, but as used in my setup and regulated via controller
my Powermeter shows me max ~ 50W for Peltier & Fan together.

But it was only a first try, there are smaller Peltier-Modules with lower consumption (and higher prices Wink) on the market.
Next step will be to try it with a more efficient Module...  Wink

On the other side I have digged up an older project of me, where a miner could be completely supplied via a selfmade solarpower solution Wink
So I´ll take an other R1 of me soon to upgrade this and give it a try for a "Green-IT nature-friendly mining solution"  Grin

andY
sr. member
Activity: 280
Merit: 250
I really like your mods  Smiley
Hey andy, can you say how much energy do you have to put into the peltier element? Is this power efficient?
Do you have to put more energy into the peltier than into the gekko?   Cheesy
sr. member
Activity: 432
Merit: 250
Save the past & use the future ©

Yes the USB meter may be a problem, it's at 2.1A at the moment, however it's a nice to have item rather than essential, so can easily be taken out of circuit.

Rich

Hi Rich,
yes I agree , it´s a great little but useful tool Smiley!
I´ve used it for a "solar powered only" project for a Z3735F based Windows-PC last year Smiley
(...and it works great Smiley. )

But back to ther topic:
My R1 runs @475MHz stable with no (or very rare) HW errors @0.935V, but takes avg 34,45 Watts from the wall (excluding fans and peltier power).
That means, it takes nearly ~ 6,886A.
So I think maybe it could be a reason for your prob, if you got at last only 2.1A...

andY


andY

We may be at crossed purposes here? By problem I meant that I might get to the limit of the USB meter? It's fine at the 2.1A being taken at 375MHz but may not at higher voltages / Frequencies?

However I have not tried above 400MHz yet as I began to see HW errors, so until I change the series resistor on the Voltage pot I cannot try any higher. I had planned on removing the USB meter anyway as I was worried about voltage drops in it's sense circuit & tracks etc.

Will probably give it a go Tomorrow, but have got to remind myself which resistor to change & what to?

Rich



Ahh, note sure maybe there is a misunderstanding Smiley
What I wanna say was, that the USB-Meter could be a limiter if you try to screw up the Vcore and the freq....

@Resistor/Pot: not sure, I have not checked it so far...
I guess it works in the same way like our Antrouter TPS53355 Mod?
So I think, you have only to put a extra 10k pulldown resistor from the pod to ground to increase the Vcore limit...
I´ll take a close look to it tomorrow...

andY
hero member
Activity: 588
Merit: 500

Yes the USB meter may be a problem, it's at 2.1A at the moment, however it's a nice to have item rather than essential, so can easily be taken out of circuit.

Rich

Hi Rich,
yes I agree , it´s a great little but useful tool Smiley!
I´ve used it for a "solar powered only" project for a Z3735F based Windows-PC last year Smiley
(...and it works great Smiley. )

But back to ther topic:
My R1 runs @475MHz stable with no (or very rare) HW errors @0.935V, but takes avg 34,45 Watts from the wall (excluding fans and peltier power).
That means, it takes nearly ~ 6,886A.
So I think maybe it could be a reason for your prob, if you got at last only 2.1A...

andY


andY

We may be at crossed purposes here? By problem I meant that I might get to the limit of the USB meter? It's fine at the 2.1A being taken at 375MHz but may not at higher voltages / Frequencies?

However I have not tried above 400MHz yet as I began to see HW errors, so until I change the series resistor on the Voltage pot I cannot try any higher. I had planned on removing the USB meter anyway as I was worried about voltage drops in it's sense circuit & tracks etc.

Will probably give it a go Tomorrow, but have got to remind myself which resistor to change & what to?

Rich

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