Quote from: mr_john on June 05, 2013, 07:01:25 AM

Just for the record:

Raspberry working fine with 3 eruptors using cgminer 3.1.1 and this hub:
http://www.digitus.info/en/products/accessories/usb-hubs/usb-20-7-port-hub-da-70222/

This hub is a 7-port hub, but only 5 eruptors will fit in (I actually tested the hub on my laptop with 5 eruptors for about 2 hours). Now it's running stable with 3 Eruptors on my raspberry (as only 3 of the 5 eruptors were my own).

To compile cgminer 3.1.1 on a current raspbian system I just did the following:

Code:

sudo apt-get update
sudo apt-get install libusb-1.0-0-dev libusb-1.0-0 libcurl4-openssl-dev libncurses5-dev libudev-dev
wget http://ck.kolivas.org/apps/cgminer/3.1/cgminer-3.1.1.tar.bz2
tar xvf cgminer-3.1.1.tar.bz2
cd cgminer-3.1.1
./configure --enable-icarus
make
# and do a short check if the binary is running:
./cgminer --verbose --text-only

Check that user pi is part of the group "dialout" so it can access the device files /dev/ttyUSBx:

Code:

pi@raspi1 ~ $ groups
pi adm dialout cdrom sudo audio www-data video plugdev games users netdev input

For starting cgminer 3.1.1 with 3 eruptors I use this commandline on the raspberry:

Code:

./cgminer --icarus-options 115200:1:1 --icarus-timing 3.0=100 -S /dev/ttyUSB0 -S /dev/ttyUSB1 -S /dev/ttyUSB2 --config /home/pi/cgminer.conf

And the config file cgminer.conf looks like this:

Code:

{
"pools" :
   [
   {
   "url" : "http://stratum.bitcoin.cz:3333",
   "user" : "",
   "pass" : ""
   }
   ],
   "expiry" : "120",
   "failover-only" : true,
   "hotplug" : "5",
   "log" : "5",
   "no-pool-disable" : true,
   "queue" : "2",
   "scan-time" : "60",
   "temp-hysteresis" : "3",
   "worktime" : true,
   "shares" : "0",
   "kernel-path" : "/usr/local/bin"
}

hashing away just fine now!

[edit]
corrected wget command to correct link for cgminer 3.1.1
[/edit]

Thanks for the step-by-step! Just got my Erupter mining away on my Pi. Only tweak I had to make was eliminating the "http://" from the "url" string in cgminer.conf