Low-cost smart energy managment based on ATmega 328P-PU microcontroller

This paper presents a real-time, low-cost, wireless, AC and DC monitoring system based on an ATmega328P-PU microcontroller. The proposed system is composed by different client nodes, which have the task to measure the main electrical quantities involved in the system, and a server node that collects the data and send them to a display device. The system is well suited for a good accuracy monitoring of either AC or DC electrical quantities. In order to verify the correct operation of the system, a case study for the simultaneous monitoring of the DC and AC voltages and currents is provided.