Topic: GridSeed 5-chip USB miner voltage mod - page 45. (Read 157001 times)
Good news, but i think it isn't worthy to buy, one can buy even more ltc than buy this little thing
I posted an idea here:https://bitcointalksearch.org/topic/m.6222366 to resolve the shoddy work on the heatsink/pcb design in regard to it not making contact with all 5 GC3355 chips due to two components that are taller.
It's easy (if you have a steady hand) and takes about 5 minutes...afterwards you have perfect contact to all 5 GC3355 chips.
It's easy (if you have a steady hand) and takes about 5 minutes...afterwards you have perfect contact to all 5 GC3355 chips.
... and for your reference ...:
My post just above nst6563 post...explaining the reason for a bad contact between the chips and heatsink...
https://bitcointalksearch.org/topic/m.6208700
Good job, nst6563...
What are your results after the mod...any improvements...?
ZiG
more reason to buy that dremel i have been wanting 
I posted an idea here:https://bitcointalksearch.org/topic/m.6222366 to resolve the shoddy work on the heatsink/pcb design in regard to it not making contact with all 5 GC3355 chips due to two components that are taller.
It's easy (if you have a steady hand) and takes about 5 minutes...afterwards you have perfect contact to all 5 GC3355 chips.
It's easy (if you have a steady hand) and takes about 5 minutes...afterwards you have perfect contact to all 5 GC3355 chips.
I have now done 4 units, here is some of my handy work
two units have thermal compound on the chips while the other two i have reused the existing thermal pads. I will post a comparison in 24hrs.
two units have thermal compound on the chips while the other two i have reused the existing thermal pads. I will post a comparison in 24hrs.
Don't know where you are running bfg on but I had trouble with it on windows, not sending shares.
Never had any trouble since on CPUminer
Never had any trouble since on CPUminer
Is anyone having issues with bfgminer where if the internet connection goes down (Like an IP change) bfgminer will not send/accept shares. I had this issue happen twice last week. bfgminer was only able to send/accept share after 3 hours (to my luck, I was sleeping :/ Lucky me 
)
Also, anyone knows of a good place to buy these TP-LINK WR703? All I can find is china but I do need these next week.
Thanks!
)Also, anyone knows of a good place to buy these TP-LINK WR703? All I can find is china but I do need these next week.
Thanks!
Hi Guys,
Modded my first unit using 47K axial resistor. Running for 24hrs now @1150 with solid 500KH and no HW errors
A quick question - I have a heap of 47K resistors with the a sixth band, which is red. are these ok to use for the mod?
Modded my first unit using 47K axial resistor. Running for 24hrs now @1150 with solid 500KH and no HW errors
A quick question - I have a heap of 47K resistors with the a sixth band, which is red. are these ok to use for the mod?
Yes, red 6th band is temp coefficient of 50ppm
it will be fine to use for the mod...
Go for it..
Hi Guys,
Modded my first unit using 47K axial resistor. Running for 24hrs now @1150 with solid 500KH and no HW errors
A quick question - I have a heap of 47K resistors with the a sixth band, which is red. are these ok to use for the mod?
Modded my first unit using 47K axial resistor. Running for 24hrs now @1150 with solid 500KH and no HW errors
A quick question - I have a heap of 47K resistors with the a sixth band, which is red. are these ok to use for the mod?
I'm going to give this a try tomorrow evening, but it sure looks like delicate work. I really appreciate Wolfey's contributions to this thread and the pictures. Looked completely doable given those great pictures until I saw how incredibly small the areas we are working with are IRL!
Wish me luck. You know *for sure* I'm going to practice ALOT on an old motherboard before taking my iron to one of my 'seeds.
Wish me luck. You know *for sure* I'm going to practice ALOT on an old motherboard before taking my iron to one of my 'seeds.
I was really afraid too when I saw IRL how small it was. but I tool my courage and did it just with a regular solder iron.
I reckon it was not easy for me and took me some time but it worked out great
I'm going to give this a try tomorrow evening, but it sure looks like delicate work. I really appreciate Wolfey's contributions to this thread and the pictures. Looked completely doable given those great pictures until I saw how incredibly small the areas we are working with are IRL!
Wish me luck. You know *for sure* I'm going to practice ALOT on an old motherboard before taking my iron to one of my 'seeds.
Wish me luck. You know *for sure* I'm going to practice ALOT on an old motherboard before taking my iron to one of my 'seeds.
OK, I didn't search for them. I'm not sure if going that high is a good idea, though.. (in terms of Watt per KHs,
I even see myself reversing the 47k mod in a couple of weeks, when efficiency will be more important.
At german energy rates, at least :/)
I even see myself reversing the 47k mod in a couple of weeks, when efficiency will be more important.
At german energy rates, at least :/)
we should start a GB for 47k and 49,9k 0402 resistors
can get them here in 10.000 piece reels only
Really? can get them here in 10.000 piece reels only
I bought 50 on ebay germany for 1 Euro..but still can't find 49,9 or 50k except on reel (24 + 6€ shipping)
Same I bought them on ebay, was real quick to get them
http://cgi.ebay.fr/ws/eBayISAPI.dll?ViewItem&item=190574128289&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_1195wt_900
but these are pin-thru, not SMDhttp://cgi.ebay.fr/ws/eBayISAPI.dll?ViewItem&item=190574128289&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_1195wt_900
True not SMD but most of us do not use SMD's
we should start a GB for 47k and 49,9k 0402 resistors
can get them here in 10.000 piece reels only
Really? can get them here in 10.000 piece reels only
I bought 50 on ebay germany for 1 Euro..but still can't find 49,9 or 50k except on reel (24 + 6€ shipping)
Same I bought them on ebay, was real quick to get them
http://cgi.ebay.fr/ws/eBayISAPI.dll?ViewItem&item=190574128289&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_1195wt_900
but these are pin-thru, not SMD http://cgi.ebay.fr/ws/eBayISAPI.dll?ViewItem&item=190574128289&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_1195wt_900
I bought 500 pieces 47.5K resistors on Amazon for $6 US.
we should start a GB for 47k and 49,9k 0402 resistors
can get them here in 10.000 piece reels only
try ebay, might take a while delivery, but im sure there was one from uk that had them 1% too. think it was 100 per strip couple of quid bout 10p each or somethign like that. can get them here in 10.000 piece reels only
Yeah, 1.3.3., and sure in principle it works with higher frequencies, but poolside numbers were very low. Just put Hashra in idle mode
and compile the girnyau github (I'm sure there must be a how-to somewhere if you search). The Hashra GUI is nice, but in the end it's
the hashrate that matters, right..?
and compile the girnyau github (I'm sure there must be a how-to somewhere if you search). The Hashra GUI is nice, but in the end it's
the hashrate that matters, right..?
try CPUminer, BFGminer did not submit shares correctly for me.
Thanks I will try this tonight. Any reason why all the sudden BFGminer would not work? Or does it not just work with the higher modded units? I am currently using the hashra image on my Raspberry pi to run the bulk of the miners, so hoping to stay with BFG.
What version were you running? 1.3.3 (Current as far as I know) has support for the higher clocks. I had some units that didnt accept shares when running higher, but at 850mhz all my units checked in and got shares. I really like the Hashra image gui, thinking of just reverting to stock for now and running it. How hard was it to put in the CGminer fork?
You can also get them at digi-key (Well at least in Canada)
we should start a GB for 47k and 49,9k 0402 resistors
can get them here in 10.000 piece reels only
Really? can get them here in 10.000 piece reels only
I bought 50 on ebay germany for 1 Euro..Same I bought them on ebay, was real quick to get them
http://cgi.ebay.fr/ws/eBayISAPI.dll?ViewItem&item=190574128289&ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649#ht_1195wt_900
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