GLA Rover is a project I've been working on as a part of a python meetup group. It uses a raspberry pi hooked up to a RC car to drive through vineyards and orchards while taking hemisphrical photos and calculating canpoy leaf area with sub-centimeter accuracy via RTK from a 433mhz connection to a Precise-point-positioning base station with Ublox ZED-f9P on rover and base stations.