This aluminium box cost ca 16.- USD P&P included and is accidentally the correct size to mount 2 of my backbone PCB’s on the inside. I need to do a more exact scaling, but the concept is illustrated below.
To do this I need to make some PCB Holders. The ones illustrated below should be easy to pring with a 3D printer.
The Box have sufficient depth to hide a PSU behind the backbone to deal with mains input. Just an idea