This post is a work in progress.
Bought a cheap project box. Paper tape and caliper allowed for quick sketch of component location.
I had a chinese all in one PSU which acts as a buck converter down from 40V inputs.
- Up to 20VDC output
- 4 amps
- Small, 230VAC powered
- Optional external DC power (via solar panel, for instance)
Final design is quite rude. The PSU takes any input. AC comes from a 24V 4A PSU, DC comes from independent inputs. A 3 way switch will take care of chosing where power comes from.
There's also a small power switch for the AC input.