This project allows a standard USB PC keyboard to be used as replacement for a DEC LK201 keyboard. It consists of a small circuit built around an Adafruit Trinket M0 Arduino processor, and software for that to implement a USB host driver for the USB keyboard and the LK201 communication protocol.
Subdirectory lk201 is the Arduino software. You can build it using the standard Arduino SDK, or use the prebuilt binary.
Subdirectory kicad is the circuit board design. You can view it using the open source KiCAD package.
Subdirectory doc contains several documentation files in MD format. File emulator.md describes the features of the emulator; kicad describes the board design and assembly information, and software describes the software and the load procedure. There are also two JPG files that show the circuit board.
File LICENSE is the open source license under which this emulator is released.