This repository contains hardware design files and datasheets for the open authenticator. This project is in development and is not ready for release.
- Small form factor of 82mm x 42mm
- Uses ESP32-WROOM-32D module
- Uses 128x64 0.96" inch OLED panel
- Uses DS3231 RTC with battery backup (CR2032) for timekeeping
- Powered by 3.7V 300 mAh LiPo battery
- Uses MCP73831 for charging LiPo battery
- Uses TPS63001 Buck Boost Converter IC for efficient 3.3V power supply, with input range from 1.8V - 5.5V
- Uses TPS22919 Load switch to control power to OLED and RTC chip
- Autoselect power source, i.e., battery or USB
- USB Type-C for charging only (no data pins connected)
/datasheets - contains datasheets of various components used in the pcb
/kicad_project - contains kicad project files for the pcb
/schematics - contains schematics of the the pcb
To view/modify the files from this repository, install KiCAD from: https://kicad.org
Thanks to OSHPark for sponsoring first prototypes
Thanks to PCBway for sponsoring the final prototypes