Authors - Y. Zamarripa-Rivera, S. Villagrana-Barraza, D.I. Ortiz-Esquivel, L.E. Banuelos-Garcia, M. Molina-Almaraz, G. Díaz-Florez Abstract - Plant propagation by cuttings requires controlled microclimatic conditions to promote rooting, reduce water stress, and improve process reproducibility. This paper presents the design, implementation, and functional validation of an ESP32based monitoring and control platform for a plant cutting propagation chamber. The system integrates multi-zone sensing, ON/OFF-based control with PWMassisted thermal actuation, local CSV data logging, Wi-Fi communication, and web-based supervision. Temperature and relative humidity were monitored in the external environment, stem zone, and root zone, while light intensity, water flow, actuator states, and PWM commands were recorded as operational variables. Validation was conducted through two 15-day experimental campaigns, generating more than 40,000 time-stamped environmental and operational records. The platform maintained differentiated microclimatic conditions, with average rootzone temperatures between 23.79 and 24.31 °C and root-zone relative humidity between 75.74 and 80.32%. Biological validation with six basil cuttings achieved an overall rooting success rate of 83.3%, reaching 100% in the second campaign. These results demonstrate the potential of low-cost ESP32-based systems for controlled-environment agriculture and smart propagation applications.
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