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But will we actually be able to *buy* any? Is there a "don't hold your breath" emoji? |
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@sidehack... I get the impression that your new boards are using a chip other than Bitfury. Can you share what chip you are using?
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We should definitely have a conversation. I'd like to know what I can do to help.
Exactly! jstefanop: if the problem with the "deal" is a too-large-a-minimum-buy, then perhaps several of us can get together... thoughts? -a[g |
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Nice! I'm interested too. How hard was it to get samples?
Thanks for giving us hope that there are *some* chips available for the small guys ;-p
-a[g
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About the best thing I can think of is it's a layout issue.
Sidehack: Did you get this figured out? I had a similar problem on one of those TI TPS chips and I never really figured it out. I had to rev the board to fix another problem and on the new rev I did a better job of making the layout match the "suggested layout" in the datasheet. Worked just fine on the new layout... so take that as a my BTC0.02 Good luck! -a[g |
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Independent from what PlanetCrypto is working on, we've been thinking about building a 4U machine made for swappable boards and such. With BM1384 it'd put up 5TH, so next-gen chips would be even better. The plan was to make the layout fairly flexible, internal connections a generic USB bus, and publish the specs in case anyone else wanted to build boards for the same form-factor. Basically, an intention to define an open standard. Once I get back to hardware dev we'll see what happens.
I've looked into this as well. Any thoughts on using something based on/derived from Eurocard (aka the IEEE 1101) family of standards? -a[g |
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We have other concepts/projects we're working on that are not in the BTC realm but will ultimately be chip based. Consequently, we're slowly gearing up to design our own propriety chips.
What package types do you prefer to work with (i.e. are easiest to work with)?
QFN, even with crazy custom pads (a-la the A1) is just fine! -a[g |
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PC, if you do something like that I'll build boards for you. The BE300 was what got us started on this project in the first place.
Same here! The BE200 was a breeze to work with, it just used too much power. -a[g |
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Snazzy board. What regulator controller are you using? I haven't really found one with the features I want but I can work around what I got.
TI TPS51363. |
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Also, looks like I might be done with the BM1384 two-chip breakout board. I'll hopefully have time to verify it tomorrow and we can send off for some prototype PCBs.
Very nice! I decided to spend the afternoon modifying my BE200 USB design and got the following ready for fab:  The design even features adjustable VCORE. Now I just needs some samples ;-) -a[g |
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We ended up buying some sample BM1384 from Bitmain and the chips arrived on Monday, so now we can start playing with them.
Sidehack: How did you go about buying the samples? Did you contact Bitmain directly? They don't seem to sell samples online. How many did you buy? I'd buy a few off you if you don't need all of them. -a[g |
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@goodney
Do you have new Stickminers in planning?
None of the current chips seem to be worth producing a StickMiner. They all use too much power for a useful hash rate. The closest I got was this BE200 based prototype @8GH/s. But it got way too hot, even with a huge heat sink. If anyone knows of a chip coming soon that might be good for a stick miner, let me know! -a[g A new generation of chips where released  https://bitcointalk.org/index.php?topic=888260.0Get me samples and I'll knock out a StickMiner. Assuming the protocol is similar to the BE200 it wouldn't even take that long ;-) -a[g |
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These are interesting...
Anyone want to go in together on a batch of the samples?
-a[g
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OK THX for your answer BITMAIN doesn't sell your chips BM1382 only? greets As far as I know the BM1382 isn't available to 3rd party developers. It would also have to be underclocked/undervoltage to work on a stick. Probably 12 GH/s. If BM1382's are available for 3rd party development, I'd be interested to know that. Even if they are, the real problem is the rest of the BOM cost... -a[g |
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@goodney
Do you have new Stickminers in planning?
None of the current chips seem to be worth producing a StickMiner. They all use too much power for a useful hash rate. The closest I got was this BE200 based prototype @8GH/s. But it got way too hot, even with a huge heat sink. If anyone knows of a chip coming soon that might be good for a stick miner, let me know! -a[g  |
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Will BITMAIN be selling bare chips to other manufactures?
-a[g
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What's your expected price point?
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I think I have found. I have compiled bfgminer 4.0.0 (a little long on raspberry  ). I have launch it with /usr/local/bin/bfgminer -S all -S bfx:all -c /opt/minepeon/etc/miner.conf bfgminer version 4.0.0 - Started: [2014-06-02 19:25:50] - [ 0 days 00:03:20]
[M]anage devices [P]ool management [S]ettings [D]isplay options [H]elp [Q]uit
Pool 0: 192.168.1.12 Diff:16 +Strtm LU:[19:29:07] User:ouafnico.nemesis
Block: ...9e415a12505516ef Diff:51.9k (371.7G) Started: [19:29:07]
ST:6 F:0 NB:6 AS:0 BW:[ 30/ 16 B/s] E:24.62 I: 974mBTC/hr BS:102
3/4 | 7.23/ 1.79/ 1.85Gh/s | A:13 R:0+0(none) HW:9/1.1%
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
AMU 0: | 2.12/ 0.58/ 0.60Gh/s | A: 3 R:0+0(none) HW:1/3.4%
AMU 1: | 2.11/ 0.57/ 0.60Gh/s | A: 8 R:0+0(none) HW:0/none
BFX 0: | 3.21/ 0.70/ 0.71Gh/s | A: 2 R:0+0(none) HW:8/none
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
[2014-06-02 19:25:48] Loaded configuration file /opt/minepeon/etc/miner.conf
The bfgminer use CPU about 2 minutes, before start to mining and show something. I will see if it hold all the day... Once you are satisfied it is working you should add "--set bfx:osc6_bits=54" to your configuration to improve the hashrate for the BFX devices. |
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Hello,
I'm using two antminer U2 (working well), and I have just added a bitfury twin.
Bfgminer 3.99 or 3.10 doesn't work if both models are connected (I'm compiling 4.00 version). Alone, bitfury works.
With cgminer 3.4.3, all worked, U2 at normal speed, but the bitfury is under 100MH/s.... alone, she is 4GH/s easily.
Is someone have ideas to try ?
The usb hub is powered enought (3A, for just the U2 and bitfury connected).
Can you copy-paste your bfgminer command line arguments? |
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$1/GH/2W
or
$2/GH/1W (personally i think $1.50/GH/W would be fair for products like the SP10 and S2)
Also, it's hard to even make hardware at that cost, let alone sell it with a profit. |
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