You can disregard the output warnings, as they are only warnings, not errors. PowerMate.rb:109: warning: Object#type is deprecated use Object#class PowerMate.rb:356: warning: don't put space before argument parentheses I downloaded the programs to my $HOME directory and tested the driver program, ~]# ruby xmmsmate.rb Usbcore: registered new interface driver powermate Input: Griffin PowerMate as /class/input/input4 Usb 5-1.4: configuration #1 chosen from 1 choice

Usb 5-1.4: new low speed USB device using ehci_hcd and address 6 Plugging the device in to my Dell monitors' USB port, I saw that my Fedora Core 6 system recognized it: Now to download the three programs responsible for controlling Ruby: Installing for dependencies: ruby-libs i386 1.8.5.52-1.fc6 updates 1.6 M

Package Arch Version Repository Size = Installing: ruby i386 1.8.5.52-1.fc6 updates 282 k This was a quick, 1.9MB install of Ruby and Desktop]# yum install rubyĭependencies Resolved = But first I needed to install Ruby, as it was not on my system. I found this site, and it provided a number of Ruby programs to get the device recognized in XMMS. I wanted a program that I could execute to have the PowerMate come alive in XMMS or the generic volume control in Gnome. I checked out some relevant links on Google, but a number of them were only the driver files or APIs for accessing the device. I tried hooking it up to my MacBook Pro first, but couldn't get it to work. These devices have been around for years and always wanted one. So my friend gave me this neat little USB knob called a Griffin PowerMate that can be used to control volume on your desktop, among other things:

Griffin technology knob driver