Compatible with all bike gears working with wire, Arduino-LCD based alpha 3 ---> 2x16 screen alpha 6 ---> 0.96" oled screen
Details avaible on here: https://bymfd.github.io/tech/2020/04/09/otomatik-vitesli-bisiklet/#/
https://hackaday.io/project/166291-automatic-transmission-system-for-bicycles