I\'m thinking about making a physical controller (device?) with knobs, buttons, and LEDs. I\'d like to interact with it using Java (respond to the knobs, light up LEDs, etc)
Ok, computer-platform independant? What platforms are you targetting? That would depend on the driver and support for that said platform, what does the usb device do? Is it a mass storage device...You may have to look around and see if you can find a device driver that can talk to the device...
Hope this helps, Best regards, Tom.