Just received and built a new board bases on the STM32F405 (Cerberus) MCU. Thought it would help me understand how all the I/O works without the safety net of Gadgeteer. However, as you can see, even the best checked designs are immune to stupid errors. :-[
I had to solder a USB cable to the board as I mis-tracked the USB connector :wall:
Oh well, it only took a couple of hours to find it, but at least it’s programming up now.