This is an experimental device and experimental code, it has not been fully tested and may damage your equipment. Please do not attempt to use this device and code unless you know what you are doing.
I can accept no liability whatsoever for any damage caused.
Details to follow ... however:
The PCB KiCAD files are in the KiCAD directory
The code, which is a PSoC Creator project is in the "GPIB USB Adapter" directory.
This is work in progress and will be documented over time.
The PCB is a test board and as such has a number of issues, most notibly:
The code is absoultely work-in-progress so lots of things won't work and this will change over time.