Speaking of screwups I made this week, I got my third prototype board back and populated it. [edit for clarity and less funniness]. When I went to put in the small DC-DC converters it turns out I swapped the board layout for those parts with a smaller part, so there really isn’t enough room. After a bit of playing around I was able to mount a few small components on the bottom side and get everything to fit. I thought I had checked out the layout pretty carefully, but I missed this.

I added another step to my pre-board-order validation list that includes double checking the layout and spacing for part size, so a good outcome overall.

On a more successful note, I got a simple ADC and DAC setup connected to Simulink so I can drive the analog inputs of my board with some controlled mixed signals to help with calibration. I love automating stuff like this.