An ATmega-based GPIB-to-USB adapter board.
This board is untested.
Initial board design.
PDF.
This board design is Open-Source Hardware. It is licensed under the MIT License. It was designed by Jason Pepas.
Thanks to Steven Casagrande of Galvant Industries for releasing his GPIB-to-USB adapter as open source hardware. Using a few of his KiCAD footprints saved me a lot of time!