This provides a basic library for using a Griffin Powermate Bluetooth controller with Python.
Bring up your Bluetooth interface:
$ sudo hciconfig hci0 up
Discover your Griffin Powermate's address:
$ sudo hcitool lescan
00:12:92:08:07:B9 PowerMate Bluetooth
Run the demo to try to connect and display events from your Powermate:
$ powermate-demo 00:12:92:08:07:B9
Connected to 00:12:92:08:07:B9
Clockwise
^C