First thing clearance The top of the fuses of the ac/logic board and the rectified positive voltage can easely be shorted together if the top board is flexed do to the use of a flooded copper region on my top fet driver board. Easy fix for this prototype i just found some scrap pcb and superglued it to the bottom of the fet board.

On this revision i also removed the lower screw holes as there really not needed. Then when adding the second offset nrf footprint i managed to move the 3v regulator to where the original screw hole was. So there was a plastic stud that is now in the way of the voltage regulator. So i had to put the components on the revers side of the board.

I added this jumper to allow for testing of the power supply before  it is connected to the micro and the rest of the board. But on the silkscreen i put it on the wrong side. Oh well another easy fix.

The tiny to-92 transistor that i original specked didn't cut it  with the micro running at full speed it was overheating and failing. So now I have a to-220 transistor in there a tip120. I also had to adjust 2 resistor to setup the biasing correctly for the new transistor that has a higher gain the 2 blue resistors in the pic below. Ignore the flux mess i ran out of the no clean stuff, this stuff is harder to get off.

SO getting there hopefully one more board spin:)