Chilibasket's walle with oLED support
Based on https://github.com/chillibasket/walle-replica
This only has a slightly modified Arduino code.
Support BW oLED displays using u8g2 library. It has been tested with a 128x64 pixel SH1106 screen from Aliexpress, but others should work as well. It requires the battery meter as described in chillibasket's project.
#define OLED enables the functionality