My 2nd Build is a box with batteries charger , inputs from 220v , solar , and a generator(12v)
it got 5 USB 1w , 4 12v plugs
what is inside….
2 x 12v 30AH
1 x Velleman PLUGC4F (12v plugs)
1 x Arduino with LCD Shield and 4 relay board
6 x print to make 12v stabel
5 x 7805 to make 12v to 5v
5 x Heatsinks for 7805
1 x 120mm FAN to cool it all when it hits 30degrees
1 x solar converter
if you wish to see the arduino build got to my first build.