New to Mining - Setting up Mining Rig

[HistoryBloke]

Hi folks!

So I'm a history teacher here in Texas and I've been discussing the evolution of money/currency with my students.  I really threw them for a loop when I introduced them to Bitcoin.  We discussed the ideas of mining versus simply buying/investing in BTC, and I told them I would build a mining rig over the holiday to keep in my classroom (free electricity!!).  As a class, we will keep an eye on the value of BTC as well as the hash rate and rewards earned.  I understand this is *not* going to make money, so no flames please.  This miner is purely for fun and educational purposes - like pan sifting in rivers at touristy historical sites.

So I have a Raspberry Pi 2 running Raspbian with CGMiner 4.9.2, three Avalon Nano USB Asics, and it's all powered by a Manhattan Mondohub.  My scoring hash rate is currently averaging about 11 Gh/s.  

So my Question:  Could I, theoretically, simply plug in an Antminer U3 directly to the Raspberry Pi and have CGMiner auto detect it in addition to my current Avalon Nano's?  Or can CGMiner only run 1 type of miner at a time?  





-HistoryBloke

[Hannu]

Hey,

One miner not means mining rig... Are you planning rig or example Antminer S7? (Buy 5 - 10 Antminer S7) + power supplys all?
What you do with Raspberry2  Its better bitcoin node/full node... - It has not enough power to mining, maybe a small scale...

http://raspnode.com/diy.html

[HistoryBloke]

Hey,

One miner not means mining rig... Are you planning rig or example Antminer S7? (Buy 5 - 10 Antminer S7) + power supplys all?
What you do with Raspberry2  Its better bitcoin node/full node... - It has not enough power to mining, maybe a small scale...

http://raspnode.com/diy.html

Okay, fair enough.  So it's not a mining "rig", it just has 3 USB ASIC miners.  Yes, instead of plugging them into my PC with Windows, it's plugged in to a Linux computer (Raspberry Pi).  I know this is small scale, however, I'm just curious as to whether or not I can plug a different miner (The Antminer U3) into the USB Hub and have CGMiner auto-detect it?

[notlist3d]

Hey,

One miner not means mining rig... Are you planning rig or example Antminer S7? (Buy 5 - 10 Antminer S7) + power supplys all?
What you do with Raspberry2  Its better bitcoin node/full node... - It has not enough power to mining, maybe a small scale...

http://raspnode.com/diy.html

Okay, fair enough.  So it's not a mining "rig", it just has 3 USB ASIC miners.  Yes, instead of plugging them into my PC with Windows, it's plugged in to a Linux computer (Raspberry Pi).  I know this is small scale, however, I'm just curious as to whether or not I can plug a different miner (The Antminer U3) into the USB Hub and have CGMiner auto-detect it?

Well you might be able to auto detect, but what I do when using different types is specify usb's in command line.  If you plug in all the asic miners then do "sudo ./cgminer --ndevs" I think it is shows the location to point --usb at.  Get one instance running and use that.

Then plug in different usb and do same thing and specify it on another build of cgminer.  So you will have 2 instances of cgminer running.   (Also means you install it twice in different folders is easiest) 

[HistoryBloke]

Hey,

One miner not means mining rig... Are you planning rig or example Antminer S7? (Buy 5 - 10 Antminer S7) + power supplys all?
What you do with Raspberry2  Its better bitcoin node/full node... - It has not enough power to mining, maybe a small scale...

http://raspnode.com/diy.html

Okay, fair enough.  So it's not a mining "rig", it just has 3 USB ASIC miners.  Yes, instead of plugging them into my PC with Windows, it's plugged in to a Linux computer (Raspberry Pi).  I know this is small scale, however, I'm just curious as to whether or not I can plug a different miner (The Antminer U3) into the USB Hub and have CGMiner auto-detect it?

Well you might be able to auto detect, but what I do when using different types is specify usb's in command line.  If you plug in all the asic miners then do "sudo ./cgminer --ndevs" I think it is shows the location to point --usb at.  Get one instance running and use that.

Then plug in different usb and do same thing and specify it on another build of cgminer.  So you will have 2 instances of cgminer running.   (Also means you install it twice in different folders is easiest) 

Ah, I see.  My linux is limited and I'm not sure how to specify USBs in command line.  I feel like I have a high HW rate and a low WU.  I wonder if it has anything to do with the fact that when I start CGMiner, I get:

Started cgminer 4.9.2
ICA 0 usb transfer err: (-9) LIBUSB_ERROR_PIPE
FAIL: USB get_lock not found (1:11)
ICA 0 usb transfer err: (-9) LIBUSB_ERROR_PIPE
FAIL: USB get_lock not found (1:9)
ICA 0 usb transfer err: (-9) LIBUSB_ERROR_PIPE
FAIL: USB get_lock not found (1:7)
Probing for an alive pool
Pool 0 difficulty changed to 256
Network diff set to 93.4G
Accepted blah blah blah
Accepted blah blah blah

Well... here's a screenshot:

[HistoryBloke]

Hey,

One miner not means mining rig... Are you planning rig or example Antminer S7? (Buy 5 - 10 Antminer S7) + power supplys all?
What you do with Raspberry2  Its better bitcoin node/full node... - It has not enough power to mining, maybe a small scale...

http://raspnode.com/diy.html

Okay, fair enough.  So it's not a mining "rig", it just has 3 USB ASIC miners.  Yes, instead of plugging them into my PC with Windows, it's plugged in to a Linux computer (Raspberry Pi).  I know this is small scale, however, I'm just curious as to whether or not I can plug a different miner (The Antminer U3) into the USB Hub and have CGMiner auto-detect it?

Well you might be able to auto detect, but what I do when using different types is specify usb's in command line.  If you plug in all the asic miners then do "sudo ./cgminer --ndevs" I think it is shows the location to point --usb at.  Get one instance running and use that.

Then plug in different usb and do same thing and specify it on another build of cgminer.  So you will have 2 instances of cgminer running.   (Also means you install it twice in different folders is easiest) 

So checking out what CGMiner can see... here it is:

pi@raspberrypi:~/cgminer-4.9.2 $ sudo ./cgminer --ndevs
 [2015-12-24 23:31:11] USB all: found 12 devices - listing known devices
.USB dev 0: Bus 1 Device 11 ID: 1fc9:0083
  Manufacturer: 'NXP'
  Product: 'VCOM Port'
.USB dev 1: Bus 1 Device 9 ID: 1fc9:0083
  Manufacturer: 'NXP'
  Product: 'VCOM Port'
.USB dev 2: Bus 1 Device 7 ID: 1fc9:0083
  Manufacturer: 'NXP'
  Product: 'VCOM Port'
 [2015-12-24 23:31:11] 3 known USB devices

It appears to see the three Avalon Nano 3 USB miners.

[Hannu]

If Texas university pays you projects. I recommend Antminer s7 (5-10 pieces + powers) Then make Antminer rig? Easy to config!

[notlist3d]

If Texas university pays you projects. I recommend Antminer s7 (5-10 pieces + powers) Then make Antminer rig? Easy to config!

He say's Texas teacher I don't see anywhere pointing to university.  And even if they did I don't think most history departments will be allowed to run miners, let alone 5-10 S7's.

If you do have support be aware S7's are not quiet.  If you go that route you will need a place not in your class room or office.

[HistoryBloke]

If Texas university pays you projects. I recommend Antminer s7 (5-10 pieces + powers) Then make Antminer rig? Easy to config!

He say's Texas teacher I don't see anywhere pointing to university.  And even if they did I don't think most history departments will be allowed to run miners, let alone 5-10 S7's.

If you do have support be aware S7's are not quiet.  If you go that route you will need a place not in your class room or office.

While I am adjunct for a junior college, I teach AP classes at a High School.  I was thinking of buying two Antminer S3s and running them both from a 1,000 watt power supply.  I could put them on the floor next to my mini-fridge, microwave, and desk.  The noise for the S3, I'm sure, would be negligible in an already loud classroom.  If anyone is willing to sell two S3s, I'm your buyer!  I'll look here on the forums and see if there's a place to buy/sell. 

[notlist3d]

If Texas university pays you projects. I recommend Antminer s7 (5-10 pieces + powers) Then make Antminer rig? Easy to config!

He say's Texas teacher I don't see anywhere pointing to university.  And even if they did I don't think most history departments will be allowed to run miners, let alone 5-10 S7's.

If you do have support be aware S7's are not quiet.  If you go that route you will need a place not in your class room or office.

While I am adjunct for a junior college, I teach AP classes at a High School.  I was thinking of buying two Antminer S3s and running them both from a 1,000 watt power supply.  I could put them on the floor next to my mini-fridge, microwave, and desk.  The noise for the S3, I'm sure, would be negligible in an already loud classroom.  If anyone is willing to sell two S3s, I'm your buyer!  I'll look here on the forums and see if there's a place to buy/sell. 

You won't find many in this thread hit up the hardware sales thread.  Also be careful when you list that you will buy 2 there are sadly a decent amount of scammers.  Use escrow if it's needed it can save you from being scammed.

Or ebay has a pretty constant supply of miners on it.  Just tend to be higher on there then forums.

[Hannu]

Hey,

Thats is my point, if somebody else (School) pays your project i recommend build Mining Rig on AntMiners (version S5--->)

Or MINING RIG (Made by powerful graphics cards) http://www.cryptobadger.com/wp-content/uploads/2013/04/step04.jpg

[notlist3d]

Hey,

Thats is my point, if somebody else (School) pays your project i recommend build Mining Rig on AntMiners (version S5--->)

Or MINING RIG (Made by powerful graphics cards) http://www.cryptobadger.com/wp-content/uploads/2013/04/step04.jpg

S5 runs hot and loud... I would not use it in a class room, that is not very good advice.  And on GPU you will not make a ton chances are you don't even make enough to pay off cards.

I would look at S3 and make it where it run's pretty quiet in your case OP.

[philipma1957]

Hey,

Thats is my point, if somebody else (School) pays your project i recommend build Mining Rig on AntMiners (version S5--->)

Or MINING RIG (Made by powerful graphics cards) http://www.cryptobadger.com/wp-content/uploads/2013/04/step04.jpg

S5 runs hot and loud... I would not use it in a class room, that is not very good advice.  And on GPU you will not make a ton chances are you don't even make enough to pay off cards.

I would look at S3 and make it where it run's pretty quiet in your case OP.

S-3 is prefect for the history teacher

Easy to down  clock to keep it quiet .

Easy to add the silverstone 141 fan  on the pull end to,lower noise.