Swap output stage gates
Add initial placement
Fix LDO ground pad permanently
Revise placement, make more compact
Set design rules
Fix MCU ground pad permanently
Create design rule for power signals
Route; Optimze placement
Add usb design recommendations
Move jumper to top layer
Change all 0402 passives to 0603 packages
Optimize USB tracks
Add ground plane
Optimize placement; Reroute
Add filter network between USB shield and GND
Add mounting holes
Add thermal vias below MCU
Route MCU power supply
Use SMD package for optocoupler
Add filters to GPIO pwr supply