[ANN] US/North American Bitfury sales NEW STOCK ***NOW SHIPPING*** - page 92.

goxed

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Quote from: BenTuras on October 24, 2013, 08:21:38 AM

Quote from: goxed on October 24, 2013, 07:06:31 AM

Exactly same thing happened. I desoldered the diode, but GPIO functionality is gone. The rPI cannot detect any h-Card. Did your GPIO functionality return? I guess I will order a new PI.

Before you do, measure the 12V at the end of the M-board.
I was measuring 4V and the pi also didn't see any H-card.
I replaced the psu and all was ok again.
(I didn't have a blown diode on the rpi)

Which points on the M-board exactly? Thanks
My 12V rails measure 11.98V and the PSU power usage is 550W at the wall on a rPI that works.
With the rPI with broken GPIO, the 12V rails measure 12.2V, power usage is 70W, and rPI does not detect a single chip / h-board. The rPI boots up and networking works.

BenTuras

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Quote from: goxed on October 24, 2013, 07:06:31 AM

Exactly same thing happened. I desoldered the diode, but GPIO functionality is gone. The rPI cannot detect any h-Card. Did your GPIO functionality return? I guess I will order a new PI.

Before you do, measure the 12V at the end of the M-board.
I was measuring 4V and the pi also didn't see any H-card.
I replaced the psu and all was ok again.
(I didn't have a blown diode on the rpi)

goxed

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Quote from: -Redacted- on October 24, 2013, 07:51:54 AM

Quote from: Soros Shorts on October 24, 2013, 06:53:08 AM

Quote from: goxed on October 24, 2013, 05:26:51 AM

My Raspberry PI got shorted out, a diode on the backside burnt out. I had upgraded from v1 Mboard over to v2.3 Mboard. It lasted just 5 minutes or so before burning out. Now back to v1 Mboard. I think the PI does not like being fed power through the pins, and rather expects a micro-usb plug.

I am not sure if the version of the M-board matters. A month ago my RPi lost its GPIO functionality when I powered down a v1 M-board. I wonder if putting a decoupling capacitor between the GPIO power pin and ground would help?

Part of the problem with powering the Pi from the GPIO pins is that there is no over-voltage protection there - a spike on the m-board's 5V line will destroy the Pi. Ask me - I've got an m-board sitting here that smoked two of them in a matter of days.

Powering the Pi from the GPIO pins is, by the way, NOT recommended....

Ha!

Part of the problem looks like the spike protection circuit (the TVS diode). Apparently it smokes up when it senses transient power from the 5V out lines on the GPIO headers.

To be on the safe side, I recommend de-soldering D17, the black TVS diode on the back of PI, near the micro-USB plug and green fuse. I have removed it from my other working rPI, and it seems to be pretty happy since last one day.

-Redacted-

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Quote from: Soros Shorts on October 24, 2013, 06:53:08 AM

Quote from: goxed on October 24, 2013, 05:26:51 AM

My Raspberry PI got shorted out, a diode on the backside burnt out. I had upgraded from v1 Mboard over to v2.3 Mboard. It lasted just 5 minutes or so before burning out. Now back to v1 Mboard. I think the PI does not like being fed power through the pins, and rather expects a micro-usb plug.

I am not sure if the version of the M-board matters. A month ago my RPi lost its GPIO functionality when I powered down a v1 M-board. I wonder if putting a decoupling capacitor between the GPIO power pin and ground would help?

Part of the problem with powering the Pi from the GPIO pins is that there is no over-voltage protection there - a spike on the m-board's 5V line will destroy the Pi. Ask me - I've got an m-board sitting here that smoked two of them in a matter of days.

Powering the Pi from the GPIO pins is, by the way, NOT recommended....

goxed

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Bitcoin / Crypto mining Hardware.

Basically the component that blew out is this (D17). It makes sense, I had just powered cycled the M-board, when this guy probably sensed transient voltage, and started destroying itself. After a few minutes magic white smoke.

http://www.littelfuse.com/products/tvs-diodes/surface-mount/smbj.aspx
Surface Mount TVS Diode
tvs diode
Web definitions

A transient-voltage-suppression diode is an electronic component used to protect sensitive electronics from voltage spikes induced on connected wires. The device operates by shunting excess current when the induced voltage exceeds the avalanche breakdown potential.

goxed

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Bitcoin / Crypto mining Hardware.

Quote from: Soros Shorts on October 24, 2013, 06:53:08 AM

Quote from: goxed on October 24, 2013, 05:26:51 AM

My Raspberry PI got shorted out, a diode on the backside burnt out. I had upgraded from v1 Mboard over to v2.3 Mboard. It lasted just 5 minutes or so before burning out. Now back to v1 Mboard. I think the PI does not like being fed power through the pins, and rather expects a micro-usb plug.

I am not sure if the version of the M-board matters. A month ago my RPi lost its GPIO functionality when I powered down a v1 M-board. I wonder if putting a decoupling capacitor between the GPIO power pin and ground would help?

Exactly same thing happened. I desoldered the diode, but GPIO functionality is gone. The rPI cannot detect any h-Card. Did your GPIO functionality return? I guess I will order a new PI.

Soros Shorts

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Quote from: goxed on October 24, 2013, 05:26:51 AM

My Raspberry PI got shorted out, a diode on the backside burnt out. I had upgraded from v1 Mboard over to v2.3 Mboard. It lasted just 5 minutes or so before burning out. Now back to v1 Mboard. I think the PI does not like being fed power through the pins, and rather expects a micro-usb plug.

I am not sure if the version of the M-board matters. A month ago my RPi lost its GPIO functionality when I powered down a v1 M-board. I wonder if putting a decoupling capacitor between the GPIO power pin and ground would help?

goxed

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Quote from: dacman61 on October 23, 2013, 08:04:14 AM

Quote from: tom99 on October 22, 2013, 11:23:38 PM

Quote from: jimrome on October 22, 2013, 11:15:51 PM

Quote from: -Redacted- on October 22, 2013, 07:27:36 PM

But notice my observation about cards with and without caps here: https://bitcointalksearch.org/topic/m.3390730

I haven't noticed that problem myself, running 7 original boards with 8 "new" boards in one rig right now.. Very stable.

You got lucky and I did not get lucky ordered 5 Hboards. I got one dead and 4 other shut off about 10 minutes and get very hot.

I am having trouble with one of my new v1 H-boards as well shorting out my whole rig. I don't notice anything damaged or anything smelling funny either. I've tried many ways to troubleshoot the problem.

My Raspberry PI got shorted out, a diode on the backside burnt out. I had upgraded from v1 Mboard over to v2.3 Mboard. It lasted just 5 minutes or so before burning out. Now back to v1 Mboard. I think the PI does not like being fed power through the pins, and rather expects a micro-usb plug.

frankenmint

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Quote from: pacojones on October 23, 2013, 12:39:10 PM

Quote from: pacojones on October 23, 2013, 03:45:33 AM

I've asked via the megabigpower power site as well - any ideas on when the October hardware should be delivered?? I was originally told last week and that's not right, so... Huh

Please point me in the right direction, maybe I missed a post on another thread??..??

I ordered just over three months ago - #33x

I received a very kind reply from customer service - should have information later (today?) on availability - I'll post an update if I hear anything and would appreciate it if others did the same!

so did this happen paco...we're all eagerly (well, some are begrudgingly) awaiting any news of delivery of v3 hardware for assembly and shipment!

Syke

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Quote from: greaterninja on October 23, 2013, 09:49:01 PM

I bought 5 starter kits and I obviously only need 1-2.

I'll sell a 32-37GH/s starter kit for $1200 OBO, includes 1 h-board, raspberry pi and 1 sd card with each kit. you will have to reimage the sd card.

3 starter kits for sale and they will probably get to you before this week is over.

I'd love to pickup another starter kit, but with h-boards already over priced at $500, your asking price is not interesting.

greaterninja

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I bought 5 starter kits and I obviously only need 1-2.

I'll sell a 32-37GH/s starter kit for $1200 OBO, includes 1 h-board, raspberry pi and 1 sd card with each kit. you will have to reimage the sd card.

3 starter kits for sale and they will probably get to you before this week is over.

mb300sd

legendary

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Drunk Posts

Are we going to be compensated if units are not received before the end October like the Sept orders were? I'm considering canceling at this point, don't see ROI coming any time soon...

klondike_bar

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ASIC Wannabe

Quote from: goxed on October 21, 2013, 03:36:13 AM

Quote from: arorts on October 21, 2013, 03:12:55 AM

Quote from: goxed on October 21, 2013, 01:40:44 AM

Try changing the following lines in miner.h and assuming you are using Auto-tuning. These work best for me

Code:

#define MAXSPEED 55
#define DEFSPEED 54
#define MINSPEED 53

Thanks. Does this require running 'make' after editing that file?

Yes, you need to make it. you can make it inside /opt/bitfury/chainminer directory

how would i do this on a running unit

edit: think i got it.

Code:

 cd /opt/bitfury/chainminer
pico miner.h
*make edits to file, then exit with saving*
make
sudo reboot

tom99

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I am still waiting for RMA and no email yet for today?

tom99

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Quote from: Yogafan00000 on October 23, 2013, 03:53:22 PM

Quote from: Kaega on October 23, 2013, 03:51:12 PM

Quote from: Yogafan00000 on October 23, 2013, 02:43:57 PM

Has anyone had their October starter kits ship yet?

They still have a few days right? September went out completely before October ... right? Wait till Nov 15, then wonder why you haven't received it.

Oh, for sure. I'm not complaining... (yet Wink

)

I haven't paying close attention to each and every post of all 165 pages. I did notice that some people have claimed shipping of order numbers higher than mine.

That's why I was asking, I wanted to make sure I didn't get missed somehow...

Starter kits for 25Gh/s and 400Gh/s are waiting for newer V3 h/w. Most orders shipped out newer V1 Hboard for older Mboards.

Yogafan00000

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Activity: 314

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Quote from: Kaega on October 23, 2013, 03:51:12 PM

Quote from: Yogafan00000 on October 23, 2013, 02:43:57 PM

Has anyone had their October starter kits ship yet?

They still have a few days right? September went out completely before October ... right? Wait till Nov 15, then wonder why you haven't received it.

Oh, for sure. I'm not complaining... (yet Wink

)

I haven't paying close attention to each and every post of all 165 pages. I did notice that some people have claimed shipping of order numbers higher than mine.

That's why I was asking, I wanted to make sure I didn't get missed somehow...

Kaega

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Quote from: Yogafan00000 on October 23, 2013, 02:43:57 PM

Has anyone had their October starter kits ship yet?

They still have a few days right? September went out completely before October ... right? Wait till Nov 15, then wonder why you haven't received it.

xstr8guy

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Glow Stick Dance!

Quote from: Yogafan00000 on October 23, 2013, 02:43:57 PM

Has anyone had their October starter kits ship yet?

No

Yogafan00000

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Has anyone had their October starter kits ship yet?

-Redacted-

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Quote from: buzzdave on October 18, 2013, 03:49:52 PM

We'll mine our own equipment before we fire sale hardware.

And therein lies the heart of a number of problems, two of which are:

No price adjustment of retail prices to match the difficulty.
No adding hardware to the ~~200TH~~ ~~100TH~~ 83TH mine until the hardware is so obsolete that no one will purchase it retail.

Topic: [ANN] US/North American Bitfury sales NEW STOCK ***NOW SHIPPING*** - page 92. (Read 576772 times)

Topic: [ANN] US/North American Bitfury sales NEW STOCK NOW SHIPPING - page 92. (Read 576772 times)