This clock uses large Kingbright SA40-19 displays.
100mm is a size which is visable from a large distance, useful for most Railroad layouts as a wall mount system clock.
In connection (WIFI) with Rocrail, it can display the same time as the (fast) clock on screen.
But without connection to Rocrail, it will function as a normal time display.
The system is using the same pcboard for every display, each configured to where it is used for.
Only one Lolin module should be installed and two PCA9622 chips on a small board control the displays and their intensity.
When functioning als standard clock, it collects its time via Wifi from Internet (Frankfurt).
More to come……