Never mined before. I'm assuming I'll need to install Bitcoin-QT & store the block chain on an SD card or USB flash drive (via symlink). Not sure if I can run Bitcoind and bfgminer simultaneously (or even individually!) with only 256 MB of RAM. Since the Jalapeno will be doing most of the work, I was hoping that this low-power XO laptop (especially if folks are able to mine using a Raspberry Pi!) would work. So, please tell me why I'd be foolish to try this setup. Looks like I have a little time to play with configuring this little guy while I wait for my Jalapeno to get here... UPDATE: since I don't need Bitcoin-QT when using a mining pool (see below), I'll first just try installing bfgminer or cgminer using the default OS. If that doesn't work, I'll give Lubuntu a try...
Dr Jally or: How I learned to stop worrying and love the ASIC.
I was a late comer to the bitcoin love, I started mining last summer, nothing major, have never had more than 600Mh/s to my name really... but on a whim I ordered a Jalapeno in late august, and then I tried to put it out of my mind as everyone else fought over if BFL would ever ship or not, etc.... I just figured that worst case, the money was gone really... lo and behold, it arrived about 3 weeks ago, let me briefly share a few things, as some of my tinkering and experiments may benefit others:
I got the non-heatpipe heatsink version, standard edition (5gh I think is the marketed speed?)... did not pay for the upgrade to 7...
Unboxed and plugged in, I averaged out around 5.4gh and temps in the low 40s (41-43).. the thing sounded like a jet engine. No, seriously, I would have 3 systems going, and that little box was the loudest thing in the room.
At those rates, I ran the numbers, and determined my ROI period was 18 days. (My total out of pocket was $163, pre price hike). My plan was to mine back what I needed in BTC to pay for the device, plus a little extra (1.8 BTC was my total target).. then I started hearing about things one could do to push it a little further (remove from case, better fan, firmware upgrade to push faster, etc)... so I spent about $100 in parts (jtag programer, cable, torx bit, etc) and decided once my 1.8BTC was mined, it was open season on the hardware, warranty be damned... purely for science you understand.
Meanwhile I started accumulating orders for a couple Block Erupter USBs for ~1BTC each, because hashrate is a dangerous drug. I also tossed in a Raspberry Pi, case, some other odds and ends (powered usb hub, etc), with the intent to power down my watt guzzling GPU rig entirely, instead of it sitting there running just to feed the ASICs..
This past weekend I opened the little black box of mystery and had some fun:
Tore down, removed the heatsink. They used thermal pads that are not adhesive on the heatsink side, so I was able to remove HS without tearing the pads any. That said, repeated removal and putting it back, I think you run the risk of them tearing over time (I have a couple small tears in mine when I took it off the first time)..
I added some copper heatsinks (think Raspberry Pi heatsinks...) to the mosfest and a few other areas of the board that (to me) seemed to run hot.
Replaced the stock fan (I'd heard the horror stories of fans breaking) with a low profile Noctua (92mm fan for anyone who is pondering), and flipped the fan over to blow down into the heatsink.
I flashed the firmware to the stock 1.25 firmware that's floating around.. They say you need to watch that the chips don't overheat while you have it powered up to flash as you can't put the heatsink and the flash cable on at the same time.. I'll admit, I constructed a leaning tower of cooling (remember those little bronze heatsinks I mentioned? two of them right on top of the ASICS, OEM heatsink propped on top to hold them down) while I jtagg'd the microcontroller, and I was still very worried about heat (cable up everything except power, mouse over the "Erase!" button in jtag software, power up BFL, smash Erase... chips go idle... load the firmware image, push "Load", as soon as the LED started showing activity (chips powered!) I ripped the power back out.
I did all this in one sitting... maybe an hour total, most of that checking it out the inside and pondering what I was about to do.
I plugged everything back in, powered up my host... and noticed my jally was just flashing like crazy and my host couldn't see it. uh-oh. I powered it off, back on, and it was fine. Since then I've powered it off about 10-20 times, and twice it would go into "super fast flash like crazy but not work" mode. Simply unplugging and replugging would solve it. I have not dug into this at all, but I think it's failing to init or pass the boot up tests. There's word around town that you can tweak the firmware to push speed further or reduce the strictness of the tests it does, but I'm happy with what I've got, so I'm leaving it: Right now Other than to change coins or work on my host system (now that it's a raspberry pi I don't think I'll be changing it much more), it's been running non-stop at around that rate/temp since the weekend. Right now my little rPi host is bashing away, with the jally and three block erupters (I know they'll most likely never reach ROI for themselves by themselves, I just wanted to tinker, but still may add a couple more to break 10Gh total just for bonus points), the jally firmware "upgrade" everyone talks about is really designed for one of the other models (the bigger ones), and that's why I think it reports as "BFL 0h" or "BFL 0d" I assume "d" and "h" are the two ASIC spots on the jally board that actually have chips on them in the jally... I figure all in I'm looking at around... lets say $650 and 90 watts (max) total for ~8.29Gh/s... The erupters really distort my numbers right now, (without them it'd be more like $350 and 80 watts (max) for ~7.3Gh/s)... but again, hashrate is addictive. The jally power supply has always seemed to run hot to me, even before I pushed the update firmware, so I may try and find a biggebetter quality PS for it, and more erupters will sadly mean I need a new usb hub, as my current one is only rated for 5v 2A, and it has to be close to that with 3 erupters, the pi, and the usb fan. :/ So I guess I've still got more investment to go, but it's just a hobby, I can quit anytime, right? right? tl;dr edition (or what I learned, without the story):
Yes, the jally is loud, remove the case, flip the fan. Your temp will drop and (with a new quiet fan atleast, I can't vouch for the oem fan), it's much quieter. Use the "top" of the case as the new "bottom", and leave the sides and top off.
Yes, ASICs can mine alt-coins provided they are sha256 and don't change too much. I've done TRC, PPC, and FRC with the BFL/Erupter setup... I found one SHA256 recently that choked with rejects, I can't remember the name, but it was one of the recent new SHA256 based coins.
Yes, there's a firmware out there you can flash the Jally with to open it up from 5gh to the 7gh -> 8gh range. The 7gh model has (I believe), just a version of this newer firmware, no better chips necessarily , so if you buy the 7gh upgrade, you are probably not going to push it to 10g or something crazy with the firmware.. note that doing this does void your warranty as far as BFL is concerned.
Hashrate is addictive, no matter how much you have, you'll still want more.
Raspberry Pi y Bitcoin Mining viernes, 5 de abril de 2013. Cambio de precios y especificaciones en Butterfly Labs. Ayer hubo una actualización de precios y especificaciones de todos los productos de Butterfly Labs, que recordemos, sigue sin envíar... Los nuevos precios quedan así: 1.- Jalapeño. 5GH/S ; 274$ 2.- Little Single. 25GH/S; 1249$ 3.- Single. 50GH/S; 2499$ También han quitado el ... Bitcoin mining with Raspberry Pi, cgminer, and BFL Jalapeno. Matsufuru Dec 18th, 2013 729 Never Not a member of Pastebin yet? Sign Up, it unlocks many cool features! raw download clone embed report print text 7.85 KB Installing cgminer on Raspberry Pi (Raspbian) for use with a Butterfly Lab's Jalapeno . These are my simple notes from installing cgminer on a Raspberry Pi for use with my late-to ... Einmal investieren, fortan Geld im Schlaf verdienen: Das Bitcoin-Prinzip klingt zu schön, um wahr zu sein. Wir haben einige der Goldgräber-Maschinen im c’t-Labor schürfen lassen und gezählt ... im a big fan of the series as well. im personally torn between nocturne and p4. So far, the Raspberry Pi has been operational for a continuous 72 days, in which I have had it attempting to CPU mine for bitcoin. This is a pretty useless activity, even on a high end modern CPU, let alone the ARM CPU on the Raspberry Pi, however it has allowed me to test for any heat related issues, and so far so good. The Pi hasn’t run much hotter than 30-40 degrees C, even during the ...
Raspberry Pi 4 Bitcoin Mining For 24 Hours! - YouTube
Learn how to make a Raspberry Pi Bitcoin Mining Rig. Hardware: 330Mh/z GPU - http://goo.gl/QlGVM7 Powered USB Hub - http://goo.gl/nvPzEy Raspberry Pi - http:... Buy Raspberry Pi 4 Model B 4GB: https://amzn.to/2tlBfGW How to Setup a Raspberry Pi 4 Bitcoin Mining Rig w/ Bitmain AntMiner U3: https://youtu.be/dPWTSytzN7g... Here are the links for the programs- Zipeg- http://www.zipeg.com/ Win32 Disk Imager- https://sourceforge.net/projects/win32diskimager/ Advanced IP Scanner- h... Link to this course(special discount) https://www.udemy.com/course/bitcoin-mining-using-raspberry-pi/?ranMID=39197&ranEAID=Gw%2FETjJoU9M&ranSiteID=Gw_ETjJoU9... ===== For More Information Click The Link To My Website http://www.fuzzthepiguy.tech/ =====...