105 Obtaining Support and Other Sources of Information - k3ng/k3ng_rotator_controller GitHub Wiki
Here are various places on the 'net authored by users which may give you ideas or help:
The official place to obtain support for this project is the Radio Artisan Groups.io group.
Additional information including "how to" videos, demonstrations, and new feature updates can be found on the Radio Artisan YouTube Channel.
TK5EP - K3NG Rotator via Ethernet
M0UPU - Anthony M0UPU no longer offers boards, however there is useful information here
G4HSK - Rotator Controller Using Arduino and PstRotator
EA2J, Enio's Implementation - Español