BTW,
having some hardware way to isolate "broken" chips without having to cut traces on the board would be a good thing.
spiccioli
pretty sure it was demonstrated that shorting the jumpers by the faulty chip causes it to simply by skipped over the same was as cutting the traces would achieve *i think thats what i read* Also it might be needed to remove the defective chip. You can use an hot air gun for that. Be careful not to heat up the rest of the board to much though. intron |
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Some fun stats:
299,787 TH
11,858 H-cards
187,816 chips are mining
Averaging 1.5GH/s per chip
We're not done yet!
Nice!!1!! 11.000+ H-cards.... man. |
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How come nobody else has noticed that the code for the chip is pretty much copy -> paste from Avalons code?
I think the BM3080 is a tweaked Avalon design :/
When you put some scope probes to pins 17 and 18 of a hashing chip and you encounter something that resembles this you can be pretty sure it's an Avalon.  Thanks to BkkCoins for the scope traces. intron |
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Actually, I'd like some comments from you...
- Would you like a USB miner or are you happy with standalone RasPi controlled unit?
- Do you feel modular design is important, or would you prefer a nice tidy box?
- What about form factor: free or rack?
- What dB level are you comfortable with?
- Internal custom PSU or ATX?
- stand-alone with Ethernet - tidy box (foofighter) - free - less then BFL - external power supply And 200+ GH per board. intron |
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I'm not the one manufacturing and designing these boards. My personal boards are still in development.
Hi punin, Making your own board now? PM-ed you, we might have something very (very, very:) interesting for you. If you want to know more PM me or c-scape. Cheers, intron |
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When you touch it with a wet finger and you hear a
hissing sound, you know it's >= 100 oC:)
Or if you touch it with a dry finger and you hear a hissing sound....  But then you lack the protective water film between the hot surface and your finger. You most likely will do this only once:) intron |
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BXF 1: 52.2C | 5.333G/5.322Gh/s | A: 328162 R: 330 HW: 201 WU: 74.4/m
These have temperature sensors, and that's with an 80mm fan pointing at it. Without the fan it gets to over 90 degrees and then I pull it out with gloves on for fear of it melting. This engineering sample doesn't shut off even after I close cgminer so it just keeps getting hotter unless I pull it out. When you touch it with a wet finger and you hear a hissing sound, you know it's >= 100 oC:) intron |
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Just be wary, these things are thirsty for power. Mine stopped working when I moved it around to a different USB outlet on my pc till I realised it was because it was sharing the same power line as the bpmc redfury I had. Putting them on separate usb hubs even directly on the pc made a difference...
Original RedFury. BMPC = Dead or Non-existent. How is that RedFury in comparison to the BiFury? Guessing both pretty stable USB miners eh? They both just keep on hashing without any issues whatsoever. One is warm and 2.3GH, the other is 5.3GH, dangerously fucking hot and needs serious cooling. EDIT: But it was an engineering sample and I have absolutely no idea how representative it will be of the released hardware! Temperatures above 50 oC can feel painfull for humans, but are ok for electronics:) Did you take the actual temperature? And a little fan can do a lot as I found out with my Block Erupters:  [image reposted] intron |
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Well.. that's another thing... We detected some weird anomaly with the boards. Say you set the pot to something and power up and measure like say 0V8 VDD. Then after the chips get programmed and start hashing the voltage goes up to 1V0!!?!?! This seems to happen especially when clock is set at 52. There's clearly some resonance there, but we don't have the necessary skill and equipment to figure out what exactly is going on and with what settings it occurs. All this mixture of weirdness and black magic makes me hesitate sending them out just yet.. I want to achieve solid performance before I ship. And preferably have the heatsinks made also.
The pot is in the feedback path of the DC/DC converter's control loop. Any noise picked up there can wreak havoc on the output signal. Has this 1V0 voltage level been probed with a scope or only with a voltmeter? And what happens when this pot is replaced with a fixed resistor? intron |
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Question to PCB designers: I submitted a Bitfury h board for fab and got the following message 1. It appears that your design has 9-12 mil holes, we require a minimum of 15mil drill with drill+10 pads for vias and drill+15 pads for mounting holes.
2. We found over 5 thousand isntances of 5.8-5.9 mil spacing, we require a minimum of 6mil spacing and no less than 6. Can someone comment if these changes can be easily done in Eagle? What did you send them, Gerber files or the original Eagle files? intron Gerber files generated from Eagle default CAM workflow Should work ok... |
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Question to PCB designers: I submitted a Bitfury h board for fab and got the following message 1. It appears that your design has 9-12 mil holes, we require a minimum of 15mil drill with drill+10 pads for vias and drill+15 pads for mounting holes.
2. We found over 5 thousand isntances of 5.8-5.9 mil spacing, we require a minimum of 6mil spacing and no less than 6. Can someone comment if these changes can be easily done in Eagle? What did you send them, Gerber files or the original Eagle files? intron |
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The number of the beast:)  |
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Can confirm hashrate:  intron Is this the estimated hashrate of accepted shares or the raw hashrate of the chips? I know bfgminer and bfgminer is printing 3 hashrates for every mining device: - the first one (I don't know what it stands for, maybe it is an averaged hashrate) - the second is the "raw" hashrate of the miner - the third is the hashrate estimated by the number of accepted shares To which category belongs your posted hashrate? Thanks for clarifying that! This was the hashrate as reported by BTC Guild after hashing for some time with one of the first bi•furys. Hope this helps, intron |
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LOL:
"I think I will just try to make it back via the PrimeDice faucet..."
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Hoeveel had je in totaal in je wallet? Dat durf ik niet te zeggen:) intron |
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Tried to clear out my account:
"Sending has failed. The hot pocket may be empty. We have being notified of this."
intron
I sent a bit of my coins right now to btc-e./ No problem o.O Could you try sending again? Was able to move 10 btc, not the 22 btc I wanted. intron |
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