PeroCast: a perovskite cell–array–system toolkit for indoor photovoltaic energy harvesting

An interactive browser-based estimator that carries a one-sun current density–voltage measurement down to indoor irradiance using a single-diode model, then sizes the harvested power, the series–parallel panel interconnection and a sensor node's energy budget. Every quantity is computed client-side from closed-form expressions; nothing is fitted or measured. The tool reproduces Tables 1, 3 and 7 of the companion manuscript exactly, and includes a self-test panel that demonstrates this against all 32 published values. Companion to "A Computational Framework for Perovskite Indoor Photovoltaic Energy Harvesting". Limitations. No harvester hardware was constructed and no indoor measurement was performed. Indoor figures are extrapolated roughly three hundredfold below the lowest measured irradiance. The shunt resistance is assumed rather than measured, and the spectral utilisation factor is modelled rather than measured.