Fixes:
- Swapped TX/RX for UART1
- Removed PWM-Signal from FAN connector and add 5V power regulator.
- add 5V to 3.3V power regulator to prevent power leakages to Raspberry PI 3.3V output at bootup.
- FIx missing wiring for power button LED.
BOM, Gerber and required files are atteched for JLCPCB.