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thedalles77
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Description

This repo describes how to make a USB keyboard from a laptop keyboard.

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USBLaptopKeyboard_Controller

This repo contains all the files that are needed to make a USB keyboard and a KVM from an old laptop.

See the USB keyboard video at https://vimeo.com/458595950

See the Pi KVM video at https://vimeo.com/458616562

See the IBM Thinkpad 380ED Keyboard and Trackpoint Conversion to USB video at https://vimeo.com/458669376

See the keyboard "Instructable" at https://www.instructables.com/id/How-to-Make-a-USB-Laptop-Keyboard-Controller/

See the KVM "Instructable" at https://www.instructables.com/id/DIY-Portable-KVM-Crashcart-From-Recycled-Laptop-Pr/

See the IBM Thinkpad 380ED to USB project description at https://hackaday.io/project/171439-ibm-thinkpad-380ed-keyboardtrackpoint-to-usb

Marcel's Python matrix generator program has been modified for the Teensy 3.2 and 4.0. His repo is forked here:

https://github.com/thedalles77/USBLaptopKeyboard_Controller-1

All files and folders in my repo are listed below:

KeyboardScannerEagle_Layouts Folder

 Keyboard_Scanner.brd  EagleCad circuit board file for Teensy LC or 3.2. 

Keyboard_Scanner_LT.brd EagleCad file same as above with 2 bit Level Translator for touchpad Clock and Data

Keyboard_Scanner_LT2.brd EagleCad file same as above with improved hole spacing for right angle header on 3.2 backside signals

Keyboard_Scanner_LT_0p5.brd EagleCad file same as Keyboard_Scanner except made for a 0.5mm pitch FPC connector

Keyboard_Scanner_Dual.brd EagleCad file is for keyboards with dual FPC cables

Keyboard_Scanner_4p0.brd EagleCad file for Teensy LC or 4.0

Keyboard_Scanner_LC_thruhole.brd EagleCad file for Teensy LC with 26 pin thru hole FPC connector

Keyboard_Scanner_2pp.brd EagleCad file for Teensy ++2.0 and up to 36 pins at 1mm, 0.8mm, or 0.5mm pitch

FPC_10pin0p5mm.brd EagleCad file for 10 pin (or less) FPC connector with 0.5mm pitch

FPC_8pin1mm.brd EagleCad file for 8 pin (or less) FPC connector with 1mm pitch

Keyboard_Scanner_....zip and FPC_....zip Zipped gerber files for PJRC fabrication

Note that some keyboards require unique Eagle board files that are found in the Example_Keyboards Folder

BlankKeyLists Folder

 Keyboard_with_number_pad.txt     Lists all keys on a keyboard with a number pad. 

Keyboard_without_number_pad.txt Lists all keys on a keyboard without a number pad.

Commodore_64 Folder

 Teensy LC code and key list files developed by Olga for a Commodore 64, see Readme file.  

GRID 1550 Folder

 Teensy LC code for a GRID 1550 UK keyboard and roller-shaft mouse. PDF describes project.

IBM T43 Folder

 Teensy 3.2 code and KiCad layout for an IBM Thinkpad T43 keyboard developed by Nat. PDF describes project.

T Caschy Folder

 HP Jornada and Atari Portfolio keyboard files developed by T Caschera

TeensyContinuityTester Folder

 Matrix_Decoder_LC.ino        Teensyduino file for Teensy LC continuity tester. 

Matrix_Decoder_3p2.ino Teensyduino file for Teensy 3.2 continuity tester.

Matrix_Decoder_4p0.ino Teensyduino file for Teensy 4.0 continuity tester.

Matrix_Decoder_2pp.ino Teensyduino file for Teensy ++2.0 continuity tester.

Matrix_Decoder_LC_alternate.ino Alternate code allows exclusion of grounded pins.

Matrix_Decoder_3p2_alternate.ino Alternate code allows exclusion of grounded pins.

Matrix_Decoder_4p0_alternate.ino Alternate code allows exclusion of grounded pins.

Matrix_Decoder_French Folder has above files but sends a shift key along with the number key.

Example_Touchpads Folder

 Touchpad_3p2.ino             Teensyduino file for Teensy 3.2 touchpad controller.

Touchpad_LC.ino Teensyduino file for Teensy LC touchpad controller.

Touchpad_pinout_testing.pdf Describes how to find the clock, data, power, and ground.

Example_Keyboards Folder

 Instructions for Modifying the Teensyduino LC code.pdf     PDF file with LC instructions.   

Instructions for Modifying the Teensyduino 3p2 code.pdf PDF file with 3.2 instructions.

Instructions for Modifying the Teensyduino 4p0 code.pdf PDF file with 4.0 instructions.

Laptop_Keyboard A separate Folder for each laptop keyboard, containing the following:

  Text file with FPC pin connections. The results from running the Matrix_decoder code.

  PDF file with key matrix table and any additional information. 

  Teensyduino code that makes a simple homebrew USB keyboard routine.

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