this board can be connected to an expansion connector of the WT32-SC01 from Wireless-Tag (c) http://www.wireless-tag.com/portfolio/wt32-sc01/

The new V2.0 is now available

Features supported by the PCB:
- Li-Ion power bank SOC
- 2 controls push buttons
- 1 Push button power control
- DS3131 / DS3232 / PCF8563 supported RTC clock
- CR1220 or 0.5F Capacitor RTC backup battery
- Micro SD connector
- MCP4725 DAC + Speaker amplifier
- I2C, IO, Control, Power connectors
- Micro USB connector for charging
- The PCB dimensions and holes fit to the WT32-SC01's.

Demo Source Code
The demo source code tests all the board's feature. The testing code is provided "as is" and it includes :
- DAC setup and test
- Basic GUI
- I2C scanner
- JPEG display
- SD Card files access
- SPIFF files access
- RTC management
- Web Server
- LVGL graphical interface

All the manufacturing files are available, or you can buy the PCB with different options.