Ardumower and Google Tango concept study (visual navigation for robotic mower) - Requires a Google Tango enabled device
1. At first, user defines perimeter (working area) via touch screen
2. A 'grid' is projected onto working area, each cells gets a color: mowed (red) and not mowed (green)
3. The next 'goal' cell and the trace to it is indicated until the complete working area has been mowed
Quick start: http://grauonline.de/wordpress/?page_id=2109
