This could be a fun project.
Erik Craddock@eriklink
OpenMower — Open Source RTK GPS Robotic Mower
OpenMower — Open Source RTK GPS Robotic Mower
OpenMower — Open Source RTK GPS Robotic Mower
OpenMower is a GPL-licensed, ROS-based robotic mower platform with centimetre-accurate RTK GPS. Open source hardware and software — no manufacturer lock-in. Build your own smart mowing robot.