Needing help with Antminer U3 /Raspberry Pi

[Starssadar]

Hi

I'm an absolute beginner with mining and Bitcoins.
I had a Raspberry Pi lying around and thought I could use it to mine, so I bought an Antminer U3, and now I'm clueless on how to use the damn thing. 

I made all updates on my RaspPi but I dont know which version of cgminer to use, how to install it or how to configure my Antminer.

Anyone know a good tutorial? Anyone can help me? I feel quite lost. 

[Starssadar]

I already tried to follow this tutorial but it doesn't work

https://forums.butterflylabs.com/bitcoin-discussion/3238-super-tutorial-raspberry-pi-raspbian-cgminer-tightvnc-wifi-boot.html

I get the following:


http://i61.tinypic.com/b8klc.png

What should I do?

[Muhammed Zakir]

Use Minera. It is easy to setup and good for Raspberry Pi.

Thread: https://bitcointalk.org/index.php?topic=596620.0

[Starssadar]

Thanks for the quick answer.

I'll look into it. Is it comptaible with the Antminer U3?

[Muhammed Zakir]

AFAIK yes.

[Starssadar]

Ok I installed the latest Minera version, accessed it from my computer. It's very nice btw.


How do I make my U3 to start mining? Just plugging it ? No need to configure it, no need for drivers?

I'm very new new to all this and I must admit I'm a bit confused.

[Muhammed Zakir]

Use CGMiner in Minera. If it isn't there by default, download it and also download Zadig^[1] and install both. After installing, you only have to choose pool, username and password. You will ne able to run it.

[1] http://ck.kolivas.org/apps/cgminer/zadig/

P.S. Read README^[2] and use default url to access settings. It is good to change default password.

[2] https://github.com/michelem09/minera/wiki/Getting-started

[Starssadar]

Isn't Zadig a windows software?


I chose a pool, username and password, but it's like my U3 won't start. It is listed, but it won't work.

What can I do?

[Muhammed Zakir]

Sorry. My mistake. I messed up my mind.

Which miner did you choose? CGMiner or BFGMiner?

[Starssadar]

I chose cgminer.

I'm a bit confused with the settings... 

What is Append JSON conf (-c /var/www/minera/conf/miner_conf.json)?
How should I set the other on/off buttons? (Script, auto login, auto-debug...)

My miner seems to be recognized, but I can't get a hash rate


And what exactly are error/rejected rates? 


Thanks a lot for your answers! 

[Muhammed Zakir]

I chose cgminer.

I'm a bit confused with the settings... 

What is Append JSON conf (-c /var/www/minera/conf/miner_conf.json)?
How should I set the other on/off buttons? (Script, auto login, auto-debug...)

My miner seems to be recognized, but I can't get a hash rate

Have you read README?

The installer will configure the system requirements and will tell you the URL to connect to.

Default URL: http://[your-minera-ip]/minera/ Default password: minera

Important: minera system user has password "minera", you should change it if your system is a public host with SSH access.

sudo passwd minera

This isn't the web password, to change the web password, login into the web interface and go to Miner -> Settings

And what exactly are error/rejected rates? 

They are either invalid (bad hash of good data) or stale (good hash of bad data)

When a block is found any share you are working on or submitting is no longer worth anything.  They are stale.   If you push GPU too hard it will make mathematical errors producing invalid hashes.

Thanks a lot for your answers! 

Anytime.

[Starssadar]

I read the Readme and can't find the answers I'm looking for...

Can anyone help me figuring out what's wrong?

 [2015-04-19 15:47:17] AU30: GetResults (amt=0 err=-7 ern=25)
[2015-04-19 15:47:17] Icarus Read: No data for 61 ms
[2015-04-19 15:47:17] [thread 0: 21474836475 hashes, 89527.4 mhash/sec]
[2015-04-19 15:47:17] Popping work from get queue to get work
[2015-04-19 15:47:17] Selecting pool 0 for work


I also have 100% error, and I don't know what to do  

http://i62.tinypic.com/309hnck.png

It gets so frustrating... I should have studied the topic better before buying this stuff

[jfoo1984]

If you're still looking, I followed the guide here, in the 2nd or 3rd response, to get my U3/RPi setup working:

https://www.raspberrypi.org/forums/viewtopic.php?t=103046&p=727350

maybe that will work for you?  I set up an account with slush's pool, and use the info provided on the site to configure the pool and such.

[michelem]

I read the Readme and can't find the answers I'm looking for...

Can anyone help me figuring out what's wrong?

 [2015-04-19 15:47:17] AU30: GetResults (amt=0 err=-7 ern=25)
[2015-04-19 15:47:17] Icarus Read: No data for 61 ms
[2015-04-19 15:47:17] [thread 0: 21474836475 hashes, 89527.4 mhash/sec]
[2015-04-19 15:47:17] Popping work from get queue to get work
[2015-04-19 15:47:17] Selecting pool 0 for work


I also have 100% error, and I don't know what to do  

It gets so frustrating... I should have studied the topic better before buying this stuff

Hey man, you are trying to hash in a pool with Scrypt algo (Altcoins) while your hardware is able to hash only in SHA-256 algo! Change your pool to hash in SHA-256 (Bitcoin)