| Summary: | This work describes the design and implementation of the hardware and software of a data acquisition and processing system for a meteorological station. The system hardware is based on the ESP32 from Espressif Systems and a series of low-cost commercial modules to supply the RTC (real time clock) functionalities, Ethernet connection, internal storage and RS485 connection. Taking advantage of the availability of Wi-Fi embedded in the ESP32, the system communicates with a personal computer, where a custom-made software allows to make adjustments to the system and to graphically visualize the data. The results obtained allowed to put into operation the meteorological station WS501-UMB of the Lufft company, which lacked the data logger; at present, the system is being used by the Cuban Agricultural Engineering Institute (Instituto de Ingeniería Agrícola de Cuba, IAgric).
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