I have just completed the revision A board layout and ordered some PCBs from OSHpark.

I have made some more changes to the schematic during the layout phase which includes adding two more buttons for a much more user friendly UI. This means that I don't have to dick around with two buttons and a rotary encoder to switch between constant voltage and constant current modes or enabling/disabling the output. The rotary encoder will now purely function as a voltage/current setting device and the original two buttons are just for selecting which value (and digit) to change with the rotary encoder.

The final size of the PCB will be 105mm*64.4mm because that is the way the project enclosure I will use will be sized. This size allows all the components to be easily placed while also leaving enough room for banana jacks and a 16x2 character LCD. The banana jacks are spaced 3/4" apart as is usual with power supply binding posts.

Now that I am waiting for the PCBs to be manufactured and the boards to arrive here in Dresden I will start with the firmware for the power supply.