Thanks, y’all!
I’ve got some more progress to report. I printed a new version of the bottom case with a routing channel for the eDP cable and a little cover to hold it in place. You can also see a small guide that lives in the screen assembly for the same purpose. I’ll likely wrap the cable in some chafe-protecting tape before I final assemble everything.
The keyboard and trackpoint are now fully functional as well. I’m using the power and USB lines that are present on the mainboard’s input cover connector. That’s the flex jumper you see on the bottom right. The keyboard row/col lines are connected directly to the Teensy 3.6 microcontroller. The trackpoint strain elements are run through a Sprintek 8707 trackpoint to PS/2 board, which then runs to the Teensy.
Video showing the keyboard/trackpoint in action: https://youtube.com/shorts/WDAGBpTVgM4?feature=share
In the video you can also see the new top cover I designed to replace the original part. Mine was in about 5 pieces and couldn’t really be salvaged. This new piece should also be compatible with completely unmodified 701Cs, so it might be useful to people restoring those machines.
The Caps Lock, Num Lock, and Scroll Lock indicators are working as well.
Main open work on the integration board:
- Test the lid sensor and audio board passthrough. (Missing a sufficiently long FFC cable at the moment)
- Test the wifi/bluetooth. (Have all the parts, just haven’t done it yet)
- Fix the power button PCB. (I goofed up the tactile button pinout)
- Fix some function key related bugs in the QMK firmware build. (Some Fn key combos put the key overlays in a wonky state)