ZMK-ThinkPad - Part 3: Connector arrived, and then there was light

The 14-pin 1mm pitch FFC connector arrived, and backlight protocol is confirmed on a T480 keyboard.

The 14-pin 1mm pitch FFC connector arrived, and backlight protocol is confirmed on a T480 keyboard.

First custom ZMK board for a ThinkPad laptop keyboard: USB, Bluetooth, a T430 that lied about its buttons, and a T60 that didn't.
Happy coincidence, and the inception of the ZMK-ThinkPad project
