This is the application for the https://github.com/vorburger/dual-mc33926-motor-driver-pi4j for a Raspberry Pi Robot, see e.g. https://twitter.com/vorburger/status/767398321505927169.
It's (currently) a Java Spring Boot based Web application serving a simple forward/right/left/backward Remote Control mobile UI.
https://github.com/vorburger/openhab2-addons/tree/rover/addons/binding/org.openhab.binding.roverrobot has the related Eclipse Smart Home OpenHAB binding.