Raspberry Pi and Raspberry Pi Pico Team Up for Robot Lawnmower Project

"The RTK GPS board provides both coarse GPS location data, along with a correction stream (RTK) which sharpens the accuracy from meters to centimeters.

This last component is crucial, as it allows the OpenMower to do away with the clunky perimeter wire and know precisely where it is within the lawn, supporting multiple mowing areas and moving back and forth in a regular pattern instead of randomly turning. "