Uhrenzentrale is a device to control slave-clocks e.g. Nebenuhr on a modelrailroad-layout.
The device supports several control modes, e.g. direct control or FastClock.
In Uhrenzentrale.ino you can select whether the software should be compiled for an LCD or OLED.
For more details please refer to the manual
Uhrenzentrale requires my libraries listed below in addition to various Arduino standard libraries: