There is a nice Arduino library which makes development of own LocoNet hardware pretty easy, it is called “LocoNet” (!!). With the help of this library I made a few experiments with LN-hardware, mostly based on the projects of “https://opensx.net” (some Selectrix Arduino projects).
The hardware consists of an Arduino Ethernet (connection to SX is via TCP to the SX3-PC program) and a FREMO “LN-shield”, more details (and the software) can be found on github: LocoNetProjects.
…. more to come …
(LocoNet is a trademark of Digitrax, Selectrix is a trademark of Maerklin/Trix)