Resources management is nowadays one of the critical global issues. The worldwide footprint in terms of resource consumption and waste is above the limit for most of the world's countries. Among the initiatives that contribute to finding solutions, WAPPFRUIT is a Piedmont regional project focusing on the optimization of water management in fruit growing to reach two goals: reducing the waste of potable water used to irrigate the fields and improving the organoleptic properties of the crop. In this context, an electronic system for field monitoring and automatic irrigation control has been developed. Such a system is composed of different kinds of modules, called end nodes, that are used to collect data and drive the electro-valves to manage the irrigation of the agricultural field.