I got things figured out and now have 4 PIs running a totall of 10 U1/U2s and 1 U3 and still have one pi idling as a standby. THe U1/U2s are running under BFGMiner and the U3 is running under cCGMiner.  I working out a stability issue with the U3 where it will run for several hours and then the process will stop with no apparent error. Not sure if it's the PI, CGMiner, or comms...

Actually I think I solved my problem though not in the manner I expected. I bought a U3 and in the process of getting it to run under CGMiner, things started working like their supposed to. It could have been a problem with the BFGMiner build code I used or it may just be the difference between the two pieses of mining software. I never could get CGMiner to run under Windows 7...

Just took a look at it but it doesn't address my questions since it is

a) a different miner
b) using different software

(unless I'm missing something on both accounts)

I have the BFGMiner software running and can get one miner to recognized and working it's the multiple issue I really want to address.

Thanks!

Ken

Some questions about running U1/U2s on a Raspberry Pi B+ using BFGMiner (Debian Wheazy):

1) I can get the Pi to recognize one miner consistently and occasionally two when plugged directly into the Pi. The Pi won't recognize any miners plugged into a powered hub (the setup works well in a Win 7 environment). Any ideas?

2) Given #1, how many miners can I run using powered hubs on the Pi?

3) When using BFGMiner I can seem to get it to recognize the configuration file. I suspect I can force it with a particular command line but don't know the syntax. Any ideas? (I recognize this one might need to go to another forum)

Any help appreciated.

Ken

I'm looking for a probability calculation that would let me calculate the odds for finding a block at a given hash rate and a given difficulty (or current difficulty) . Does such a thing exist?

I'm considering purchasing a mining contract for a solo pool (been running one here for the last month and doing OK) so I want to know what level of mining capability will bring me (statistically) a btc block.

Thanks for any info!

I need a little assistance. I'm running a machine under Slax Linux and want to run BFGMiner on the machine. Can someone here give me some simplified instructions on what I need to do to get it up and running under Slax.

Thanks!

What exchanges do folks use and/or recommend? I have a little bit of coin that I'm considering changing to $$ when BTC hits $510 (LOL). just wondering what exchange seems the safest and the least expensive.

Thanks

Here's an explanation for the price dip we just went thru...

http://techcrunch.com/2014/10/06/watch-what-happens-when-someone-dumps-tens-of-thousands-of-bitcoin-at-below-market-rates/?ncid=rss&utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Techcrunch+%28TechCrunch%29

SEVEN blocks already today with nearly half the day left!!! 

Anybody who may want to contract for GH/s, let me know. I've found a good source and can probably work a deal for you. Just PM me if interested.

About 0.011 a month given 100% uptime. I got them all very cheap from eBay.

Thanks, I'll give it a look..

I'm running Antminer U1/U2s for a total of 20 GH/s. Been running them since February and have paid for them already since I don't pay for power in my apartment.

This is off-topic but if someone can point me to the right spot, I would appreciate it.

I need to move my miners from a Windows 7 Machine to a Linux (SLAX) machine for at least a short term basis or maybe permanently. Is there an easy implementation of ANY miner software that anyone can recommend?

Thanks!

A slight bit off topic but an interesting article:

http://techcrunch.com/2014/08/25/gold-dealer-drops-credit-card-payments-for-bitcoin/

I'm lucky. I'm in an apartment with a fixed rate for utilities so my 17GH don't cost me a thing..! 

+1 to RogMiner!

Are you looking to sell any of them? Electricity doesn't cost me a thing so I might be interested.

I'm relatively lucky. I've been mining since February using 10 Antminer U1/U2s. Since I pay nothing for my electricity (it's included in the rent), I've already broken even between the mining and using the various faucets. My total investment is the miners and three powered USB hubs.

Interesting reading.....

http://www.foxnews.com/tech/2014/06/10/nsf-suspends-researcher-who-misused-supercomputers-to-mine-bitcoins/?intcmp=latestnews