This is a layout designed with programming in mind. It's a modification of the iso-uk
layout, and has been tested on a TADA68 purchased from kbdfans in May 2019. The physical key layout includes the "double height" iso Enter key and the "short" Left Shift along side the iso Backslash key. See this keyboard-layout-editor.com Gist
Bare:
With FN:
Please see the tada68 readme using the following command
make tada68:onelivesleft:flashbin