Knuckled down this week and got the Circuit drawn up in Kicad and the PCB laid out. reasonably happy with how it came out. Working with Kicad for the first time after using Eagle for the last 10 years or so was a bit of a challenge but with plenty of tutorials and information available anything I struggled with was solved in a minute or 2 with the help of Duck DucK Go.

Next step will be to produce the PCB and put it all together.