What to do with BFL FPGA singles now?

[high110]

I kept my brick =)

I don't think anyone will buy it at this point.

[lightfoot]

I kept my brick =)

I don't think anyone will buy it at this point.

I'd buy it for $25 as a curiosity and maybe to run it on a solar panel.

C

[frankenmint]

I kept my brick =)

I don't think anyone will buy it at this point.

I'd buy it for $25 as a curiosity and maybe to run it on a solar panel.

C

I'll buy it for 50 each for the same points mentioned above.

[high110]

Lol - I'm honestly too lazy to send it.  You guys can always try ebay =)

[lightfoot]

Lol - I'm honestly too lazy to send it.  You guys can always try ebay =)

Naah. Just lost a $400 bid on a beautiful 8k watch on Ebay, it's the place of sad dreams.

[DobZombie]

I could use one of these for these for the museum

[mogrith]

You can try mining blakecoin. it's not scrypt or sha-256 there is FPGA miner for it.
https://bitcointalk.org/index.php?topic=306894.msg3290239#msg3290239

Block reward is 25 coin + inflation (square root of (difficulty + block height))
No halfing of reward after x blocks
Cap in place to reduce the difficulty jumps upwards
Block target time is 3 minutes and retargets every hour
7 Billion coins
Block maturity 120

Thanks to the efforts of kramble, Blakecoin has been successfully ported to the FPGA (early development)

FPGA-Blakecoin-Miner by kramble
https://github.com/kramble/FPGA-Blakecoin-Miner

[kramble]

You can try mining blakecoin. it's not scrypt or sha-256 there is FPGA miner for it.
https://bitcointalk.org/index.php?topic=306894.msg3290239#msg3290239
github.com/kramble/FPGA-Blakecoin-Miner

Sorry to disappoint, but even if the devices can be unlocked (which I doubt), there is no current port for the EP3SL150F780, and there is also the problem of the onboard MCU and a software driver.

You'll be better (if you have the kit) trying the Lancelot port (which does work, though with a quirky python mining driver), or maybe a Ztex which should be a fairly trivial hack, though as I don't have a board to test on somebody else will have to trailblaze this.

[high110]

I don't know the technical details - but I'm guessing that's a no? It can't be used to mine alt coins?

[atavacron]

You can try mining blakecoin. it's not scrypt or sha-256 there is FPGA miner for it.
https://bitcointalk.org/index.php?topic=306894.msg3290239#msg3290239
github.com/kramble/FPGA-Blakecoin-Miner

Sorry to disappoint, but even if the devices can be unlocked (which I doubt), there is no current port for the EP3SL150F780, and there is also the problem of the onboard MCU and a software driver.

You'll be better (if you have the kit) trying the Lancelot port (which does work, though with a quirky python mining driver), or maybe a Ztex which should be a fairly trivial hack, though as I don't have a board to test on somebody else will have to trailblaze this.

Kramble,

I've got two Ztex x6500s.  I'm an FPGA newb but learn quickly.  Could you give me a starting point or direction on how to get Blakecoin ported?

I downloaded one of your bitstreams and modified the User ID in a hex editor so that BFGMiner would load it onto the FPGA.  Then I tried to use Reaper-Blakecoin to detect the FPGAs and mine but no joy.  Am I close?

Thanks in advance,

atavacron

[kramble]

Kramble,

I've got two Ztex x6500s.  I'm an FPGA newb but learn quickly.  Could you give me a starting point or direction on how to get Blakecoin ported?

I downloaded one of your bitstreams and modified the User ID in a hex editor so that BFGMiner would load it onto the FPGA.  Then I tried to use Reaper-Blakecoin to detect the FPGAs and mine but no joy.  Am I close?

Nice thinking, but the I/O for the Ztex boards is different from the Lancelot so the bitstream won't work as-is. I'll do a quick port for you to try out (I'll base it on the published code in http://www.ztex.de/btcminer/ZtexBTCMiner-121126.tar.bz2). I did something similar for Litecoin (see https://github.com/kramble/FPGA-Litecoin-Miner/tree/master/experimental/ZTEX) which Vpereira was going to test, though I've not had much feedback recently. Blake should be simpler though as it uses the same midstream/data interface as bitcoin (unlike litecoin which required the full block header).

There may be an issue with the midstate as blake uses a different algorithm, so unless reaper sends the modified midstate it won't work. Perhaps modifying the Ztex Java miner would work, or a cgminer port?

Could you let me know the User ID that I need to embed in the bitstream?

I'll get onto this tomorrow. Probably best to follow-up on the Blakecoin thread as its a bit OT here.

Regards
Mark

[atavacron]

Kramble,

I've got two Ztex x6500s.  I'm an FPGA newb but learn quickly.  Could you give me a starting point or direction on how to get Blakecoin ported?

I downloaded one of your bitstreams and modified the User ID in a hex editor so that BFGMiner would load it onto the FPGA.  Then I tried to use Reaper-Blakecoin to detect the FPGAs and mine but no joy.  Am I close?

Nice thinking, but the I/O for the Ztex boards is different from the Lancelot so the bitstream won't work as-is. I'll do a quick port for you to try out (I'll base it on the published code in http://www.ztex.de/btcminer/ZtexBTCMiner-121126.tar.bz2). I did something similar for Litecoin (see https://github.com/kramble/FPGA-Litecoin-Miner/tree/master/experimental/ZTEX) which Vpereira was going to test, though I've not had much feedback recently. Blake should be simpler though as it uses the same midstream/data interface as bitcoin (unlike litecoin which required the full block header).

There may be an issue with the midstate as blake uses a different algorithm, so unless reaper sends the modified midstate it won't work. Perhaps modifying the Ztex Java miner would work, or a cgminer port?

Could you let me know the User ID that I need to embed in the bitstream?

I'll get onto this tomorrow. Probably best to follow-up on the Blakecoin thread as its a bit OT here.

Regards
Mark

I notice that the BFGMiner was looking for "UserID=0x42240402" for the Ztex x6500 so I used the Bless Hex Editor in Ubuntu and modified yours to that.  BFGMiner loaded the entire bitstream without a problem.

[atavacron]

Kramble,

I've got two Ztex x6500s.  I'm an FPGA newb but learn quickly.  Could you give me a starting point or direction on how to get Blakecoin ported?

I downloaded one of your bitstreams and modified the User ID in a hex editor so that BFGMiner would load it onto the FPGA.  Then I tried to use Reaper-Blakecoin to detect the FPGAs and mine but no joy.  Am I close?

Nice thinking, but the I/O for the Ztex boards is different from the Lancelot so the bitstream won't work as-is. I'll do a quick port for you to try out (I'll base it on the published code in http://www.ztex.de/btcminer/ZtexBTCMiner-121126.tar.bz2). I did something similar for Litecoin (see https://github.com/kramble/FPGA-Litecoin-Miner/tree/master/experimental/ZTEX) which Vpereira was going to test, though I've not had much feedback recently. Blake should be simpler though as it uses the same midstream/data interface as bitcoin (unlike litecoin which required the full block header).

There may be an issue with the midstate as blake uses a different algorithm, so unless reaper sends the modified midstate it won't work. Perhaps modifying the Ztex Java miner would work, or a cgminer port?

Could you let me know the User ID that I need to embed in the bitstream?

I'll get onto this tomorrow. Probably best to follow-up on the Blakecoin thread as its a bit OT here.

Regards
Mark

I notice that the BFGMiner was looking for "UserID=0x42240402" for the Ztex x6500 so I used the Bless Hex Editor in Ubuntu and modified yours to that.  BFGMiner loaded the entire bitstream without a problem.

I'll resume this topic on the Blakecoin thread.

[ekiro]

Title says it all.

Now that a BFL FPGA single only breaks even with electiricty costs (depending on your rate, in CA it's negative now), what are people doing with their old BFL singles?

Each single generates roughly 0.002 BTC today, hardly worth it to keep the things on.

It's amazing how obsolete this stuff becomes. So fast!

I had 3 of these a month ago. Now they are pretty useless. But I managed to make a descent ROI on it. L

[lightfoot]

Cloud mining is the latest scam. From a math point there is no other way; it's like promising 120% return on PPS or something.

I just took a look at one of these "cloud miners". Ah look, they have "referral bonuses". I wonder if it's another multi-level-marketing scheme/scam....

Good luck :-)

C

[waltermot321]

Title says it all.

Now that a BFL FPGA single only breaks even with electiricty costs (depending on your rate, in CA it's negative now), what are people doing with their old BFL singles?

Each single generates roughly 0.002 BTC today, hardly worth it to keep the things on.

It's amazing how obsolete this stuff becomes. So fast!

I had 3 of these a month ago. Now they are pretty useless. But I managed to make a descent ROI on it. L

Lucky for you, at least you ROI ....

[cxboyminer]

How many Gigs can the FPGA produce today?

[zerocode20]

How many Gigs can the FPGA produce today?

A gigawatt