Convert a Sony Vaio into a Raspberry Pi and Teensy laptop
The PDF file gives a complete description of the project with pictures and parts list. The folder contains the Eagle files for a circuit board that connects the Teensy ++2.0 to the keyboard FPC connector. The .ino file is the Teensyduino C code that scans the keyboard, and touchpad, and controls the video card. The read_battery.c file is run on the Raspberry Pi to read the registers in the battery with a bit-bang SMBus using 2 of the GPIO pins. The monitor_battery.c file runs on the Raspberry Pi at startup and monitors battery state of charge every minute over the SMBus.
A short video of this laptop project is at this YouTube address: https://www.youtube.com/watch?v=Gh3VTcLiJrI Battery operation was added after this video was made.