Creating a low-cost pin-compatible Arduino/Due board using an STM32L471

westfw:
Grr. Google Drive apparently doesn't like firefox very much. Things went better with Chrome, and I've uploaded a combined .zip file...Draw new edge in "dimension" layer, use "miter" tool on corners. Delete old edge... (uploaded a "-rounded" version as well.")

ok so that's committed and uploaded, went over it - really appreciated what you've done.

i did that re-routing around C19 (top left of MCU), i feel happier with the tracks top and bottom crossing at right-angles or 45. also the GND connectivity to C19 was a bit... tenuous: moving the tracks around allowed me to put some better GND connectivity in, jumping several times between the planes.

put in the SMT switch (thanks for the suggestion!). also i am a bit... funny about adding in GND VIAs, i think in 3D, so added some as a 3D barrier around the ADC traces where they come in to the MCU. also there's some areas where i add them to join pieces of GND flood-fill together. on one layer it's GND then track and on the other it's track then GND, and there's this little bit in between where you could fit VIAs in between and get a contiguous GND connection.

it's all the little bits that add up, y'know?

i also really appreciated that you managed to get some GND in between that right-hand connector pins, i was able to add some more in.

btw westfw, i put the GND/Power clearance back to 8mil not because i disagree that it should be (i haven't moved tracks closer) but because when tStop is enabled there's over i think it was 180 DRC violations (!) all on the MCU...