The hardware was developed through KiCad 6.0.
Development

Features
- [✓] USB-C Battery Charger
- [✓] 1.72 A max current charge
- [✓] Load protection
- [✓] Reverse current protection
- [✓] Battery voltage reading
- [✓] MicroSD Card
- [✓] Real-Time Clock
- [✓] External power supply (CR2032)
- [✓] External UART to flash ESP32
- [✓] I2C and Analog pins
- [✓] Onboard status LEDs
- [✓] Testpoint
- [✓] 3.3V
- [✓] Vbat
- [✓] Ground
Schematic
Printed Circuit Board
Front View
Back View
Author