2017-05-21 1:45 GMT+02:00 Luke Kenneth Casson Leighton <lkcl@lkcl.net>:

the layout's hilarious: the PCB is over 50% completely empty. what i
haven't done is:

Would it make sense to add a small LiPo battery, to fill the empty space? That way you can swap a card from one housing to another, without the need to reboot.