[ANN] US/North American Bitfury sales NEW STOCK ***NOW SHIPPING***

[dracore]

Can someone touch the external power port (it's mini-USB connector) on the RPi?  Is it burning hot?

I'm having issues with my RPi no longer turning on.  I don't know but I suspect that maybe the M-board is feeding too much power into the RPi.  I measured 5.40V across 5V and ground of the GPIO connector on the RPi (I guess this is the same as measuring at testpoint 1 and 2?) which is beyond its operating spec range.

 

[-Redacted-]

I've had an MB burn up two RasPi's.  Same symptoms - way too hot with way too much voltage into the Pi.  I'm betting it's the square chip slightly above the mini-USB connector - RG2 - that's doing the heating up.  That's the chip that got very hot on mine - so hot it heats up everything around it.  Two fried PIs...

[dracore]

I've had an MB burn up two RasPi's.  Same symptoms - way too hot with way too much voltage into the Pi.  I'm betting it's the square chip slightly above the mini-USB connector - RG2 - that's doing the heating up.  That's the chip that got so hot on mine - so hot it heats up everything around it.  Two fried PIs...

Ah yes I remember you mentioned something about this in the past.  What did you end up doing?  I emailed Dave to see what he can do about the board and RPi

[-Redacted-]

I switched to a backup m-board and switched a RasPi that I had running just a few Block Erupters over to the BF.  Bought another off Amazon to have as a spare.  I also emailed Dave and made a return entry on the website, but haven't heard anything...

I've had no troubles with my second m-board and third RasPi (so far)... 

[Beastlymac]

Hi Dave,

Would it be possible to get a data sheet with the thermal specs for the bitfury chip? Thanks

[goxed]

Anyone else hoping they come out with a new PCB colour for each batch/month? I would be at least 20% more willing to invest in equipment if it meant my rig became a massive rainbow 

you shrooming bro?

+1 lolzz

[Ridicuss]

I've had an MB burn up two RasPi's.  Same symptoms - way too hot with way too much voltage into the Pi.  I'm betting it's the square chip slightly above the mini-USB connector - RG2 - that's doing the heating up.  That's the chip that got so hot on mine - so hot it heats up everything around it.  Two fried PIs...

Ah yes I remember you mentioned something about this in the past.  What did you end up doing?  I emailed Dave to see what he can do about the board and RPi

I also lost an rpi, it was cooked dead, wont power up by any means.  I had a spare pi but no spare M-board. running almost 2 days now on backup. I have reached out to MBP about this and am still waiting for response. I also have more rpi on the way, just in case.

[dracore]

I've had an MB burn up two RasPi's.  Same symptoms - way too hot with way too much voltage into the Pi.  I'm betting it's the square chip slightly above the mini-USB connector - RG2 - that's doing the heating up.  That's the chip that got so hot on mine - so hot it heats up everything around it.  Two fried PIs...

Ah yes I remember you mentioned something about this in the past.  What did you end up doing?  I emailed Dave to see what he can do about the board and RPi

I also lost an rpi, it was cooked dead, wont power up by any means.  I had a spare pi but no spare M-board. running almost 2 days now on backup. I have reached out to MBP about this and am still waiting for response. I also have more rpi on the way, just in case.

Ah geez I'm doing some research on this... interesting that on the raspberry pi forums, feeding power into the GPIO pins (like how our mboards are doing) is not recommended because it doesn't have any power protection. 

[Ridicuss]

I've had an MB burn up two RasPi's.  Same symptoms - way too hot with way too much voltage into the Pi.  I'm betting it's the square chip slightly above the mini-USB connector - RG2 - that's doing the heating up.  That's the chip that got so hot on mine - so hot it heats up everything around it.  Two fried PIs...

Ah yes I remember you mentioned something about this in the past.  What did you end up doing?  I emailed Dave to see what he can do about the board and RPi

I also lost an rpi, it was cooked dead, wont power up by any means.  I had a spare pi but no spare M-board. running almost 2 days now on backup. I have reached out to MBP about this and am still waiting for response. I also have more rpi on the way, just in case.

Ah geez I'm doing some research on this... interesting that on the raspberry pi forums, feeding power into the GPIO pins (like how our mboards are doing) is not recommended because it doesn't have any power protection.  

Not suggesting this but, If the pins that power the pi were dissabled (snipped, bent, whatever), And we then power the pi via wall-wart, would it work? Or are those pins serving another purpose. I fully realize a modification to the M-board will void the warranty, Just an out loud thought turned into a post.

Also I dont like this Idea just from the point of having another plug.

[dracore]

I've had an MB burn up two RasPi's.  Same symptoms - way too hot with way too much voltage into the Pi.  I'm betting it's the square chip slightly above the mini-USB connector - RG2 - that's doing the heating up.  That's the chip that got so hot on mine - so hot it heats up everything around it.  Two fried PIs...

Ah yes I remember you mentioned something about this in the past.  What did you end up doing?  I emailed Dave to see what he can do about the board and RPi

I also lost an rpi, it was cooked dead, wont power up by any means.  I had a spare pi but no spare M-board. running almost 2 days now on backup. I have reached out to MBP about this and am still waiting for response. I also have more rpi on the way, just in case.

Ah geez I'm doing some research on this... interesting that on the raspberry pi forums, feeding power into the GPIO pins (like how our mboards are doing) is not recommended because it doesn't have any power protection. 

Not suggesting this but, If the pins that power the pi were dissabled (snipped, bent, whatever), And we then power the pi via wall-wart, would it work? Or are those pins serving another purpose. I fully realize a modification to the M-board will void the warranty, Just an out loud thought turned into a post.

That's exactly what I'm thinking but on a simpler side of things...

Instead of snipping the pins, get a ribbon cable and connect between mboard and rpi.  Then snip the 5v lines of the ribbon.  The only question is... what about the 3v line?  I am guessing snip that too?

[cet]

Ah geez I'm doing some research on this... interesting that on the raspberry pi forums, feeding power into the GPIO pins (like how our mboards are doing) is not recommended because it doesn't have any power protection. 

This is true, sort of.  But if your m-board has power issues then your likley to fry you h-boards.  Right now your worried about the $40 component when the smoke is coiming out of the $500 component.

/cet.

[xstr8guy]

I'm curious to hear more details from people who have fried pi's.  Are you using older or inexpensive PSUs that are plugged directly into the wall or a high quality PSU plugged into an UPS?

[dracore]

I'm curious to hear more details from people who have fried pi's.  Are you using older or inexpensive PSUs that are plugged directly into the wall or a high quality PSU plugged into an UPS?

Brand new (relatively) high quality 80%-efficiency with UPS.  I'm confident that my PSU is generating stable 12V for the mboard.  I measured the 5v power coming out of the m-board pins and going into the RPi.  It's weird... first it's at 5.39V but it keeps increasing every couple seconds.  In any case, 5.39V is beyond the maximum (5.25V)

What I'm finding is that the polyfuse F3 (near the micro-usb connector) gets really really hot - finger burning.  Is yours like that? 

[Ridicuss]

I'm curious to hear more details from people who have fried pi's.  Are you using older or inexpensive PSUs that are plugged directly into the wall or a high quality PSU plugged into an UPS?

Brand new (relatively) high quality 80%-efficiency with UPS.  I'm confident that my PSU is generating stable 12V for the mboard.  I measured the 5v power coming out of the m-board pins and going into the RPi.  It's weird... first it's at 5.39V but it keeps increasing every couple seconds.  In any case, 5.39V is beyond the maximum (5.25V)

http://www.amazon.com/OCZ-Fully-Modular-Performance-compatible-Phenom-OCZ-ZX1000W/dp/B004P1IWZU

Mine is OCZ ZX 1000, No ups.

[Littleshop]

I'm curious to hear more details from people who have fried pi's.  Are you using older or inexpensive PSUs that are plugged directly into the wall or a high quality PSU plugged into an UPS?

Brand new (relatively) high quality 80%-efficiency with UPS.  I'm confident that my PSU is generating stable 12V for the mboard.  I measured the 5v power coming out of the m-board pins and going into the RPi.  It's weird... first it's at 5.39V but it keeps increasing every couple seconds.  In any case, 5.39V is beyond the maximum (5.25V)

What I'm finding is that the polyfuse F3 (near the micro-usb connector) gets really really hot - finger burning.  Is yours like that? 

What brand of PS and what brand of UPS?

[dracore]

I'm curious to hear more details from people who have fried pi's.  Are you using older or inexpensive PSUs that are plugged directly into the wall or a high quality PSU plugged into an UPS?

Brand new (relatively) high quality 80%-efficiency with UPS.  I'm confident that my PSU is generating stable 12V for the mboard.  I measured the 5v power coming out of the m-board pins and going into the RPi.  It's weird... first it's at 5.39V but it keeps increasing every couple seconds.  In any case, 5.39V is beyond the maximum (5.25V)

What I'm finding is that the polyfuse F3 (near the micro-usb connector) gets really really hot - finger burning.  Is yours like that? 

What brand of PS and what brand of UPS?

rosewill rg-530, cyberpower ups

[xstr8guy]

I'm curious to hear more details from people who have fried pi's.  Are you using older or inexpensive PSUs that are plugged directly into the wall or a high quality PSU plugged into an UPS?

Brand new (relatively) high quality 80%-efficiency with UPS.  I'm confident that my PSU is generating stable 12V for the mboard.  I measured the 5v power coming out of the m-board pins and going into the RPi.  It's weird... first it's at 5.39V but it keeps increasing every couple seconds.  In any case, 5.39V is beyond the maximum (5.25V)

What I'm finding is that the polyfuse F3 (near the micro-usb connector) gets really really hot - finger burning.  Is yours like that? 

Nothing on my pi is remotely warm to the touch.  It is getting some cooling from the fans directed at my H boards.  I'm using a Corsair AX 860 PSU and APS XS1500 UPS.

[-Redacted-]

I'm curious to hear more details from people who have fried pi's.  Are you using older or inexpensive PSUs that are plugged directly into the wall or a high quality PSU plugged into an UPS?

Brand new (relatively) high quality 80%-efficiency with UPS.  I'm confident that my PSU is generating stable 12V for the mboard.  I measured the 5v power coming out of the m-board pins and going into the RPi.  It's weird... first it's at 5.39V but it keeps increasing every couple seconds.  In any case, 5.39V is beyond the maximum (5.25V)

What I'm finding is that the polyfuse F3 (near the micro-usb connector) gets really really hot - finger burning.  Is yours like that? 

What brand of PS and what brand of UPS?

Coarsair HX1050 80 Plus Gold.  No UPS - no outages here in the last 2 years.

[E]

Just a quick note that the SD card (Kingston SD4) that shipped w/ my starter kit kicked the bucket yesterday after about 22 days of operation. I reflashed onto another card rather than trying to debug a 4GB sd card; I guess I'll be looking into the NFS root image approach shortly.

[Biomech]

Just a quick note that the SD card (Kingston SD4) that shipped w/ my starter kit kicked the bucket yesterday after about 22 days of operation. I reflashed onto another card rather than trying to debug a 4GB sd card; I guess I'll be looking into the NFS root image approach shortly.

I really doubt that had anything to do with your mining machine. It has been my experience that Kingston's stuff is about 80/20 on reliability. 8 out of ten are bulletproof, and two fail withing a week or two. Never tried to warranty them, as they are cheap, but I've had far better luck with Sandisk and PNY.

The downside of that is that Kingston is usualy first to market with bigger cards