Abstract
In this paper, a special microcontroller-based data-acquisition system (DAQS) for remote photovoltaic (PV) water pumping systems with available components is designed and made. The specific microcontroller was selected in order to produce a fast and low-cost prototype. These data serve to collect field's parameters, such as water flow rate, global irradiation on an inclined and horizontal surface, voltage and current of PV field and ambient temperature. To verify its functioning, some field tests and comparison of this measurement system against two other commercial DAQSs have been carried out.