I fiddled with this some more today. After editing your /etc/udev/rules.d file, the terminal command "xhc-whb04b-6" show find the device right out of the liveCD with no recompiles required. The "-u" option will print a hexdump of the communication between the computer and the pendant. "-p" prints only when you press or release a button and does not report on the wheel. Hope that helps. Let me know if you need some help with LinuxCNC and I'll muddle through with you.