Investigating the temperature dependence of solar cell open-circuit voltage using Arduino: a multidisciplinary lab experience

Encouraging students to explore relevant technological fields can be more effective when theoretical concepts are combined with hands-on learning. With this goal in mind, we present an undergraduate laboratory project in which students use Arduino to collect and analyse data from a photovoltaic cell. Specifically, the project aims to investigate the dependence of a solar cell’s open-circuit voltage on its operating temperature under constant optical power, using a data acquisition chain powered by Arduino. The project provides an opportunity to learn about renewable energy, sensors, signal processing, data analysis, and C/C++ programming. The practical approach promotes inquiry-based learning and helps bridge the gap between theory and real-world application. Its cross-disciplinary nature can also encourage reflection on broader economic, political, and social issues.