PCB's arrived today from the board house.

As you can see, this board is just half-assembled. I want to make some tests before I continue. Mainly to make sure that the switch mode converter runs smoothly with the input filter in place and to ensure that the efficiency is good enough to avoid thermal issues. The board is surprisingly small in the hand, our earlier prototype was 10 x 8cm, which feels quite bulky. The new version is only 5 x 8cm, half the area of the old board.

Since there was almost no space on the board for component designators, I printed out a large reference diagram to work with when assembling. It worked out nicely.