One form of plant care is to measure the microclimate when cultivating chilies in a greenhouse. The aim of this research is to design a control system to make it easier for farmers to access information on temperature and soil moisture on chili cultivation land. The microcontroller is integrated with email in monitoring and controlling climate factors in the greenhouse at a low cost. The sensors used are the DHT22 sensor and soil moisture sensor. Application Programming Interface (API) Pushingbox is used to simplify the system for sending data from the microcontroller to the website. The system can be accessed via the website monitoringcabai.weebly.com. Validation of the soil moisture and temperature sensors resulted in an RMSE of 6.04. Validation of the three greenhouse temperature sensors produced RMSE of 0.16, 0.14, and 0.16. The accuracy rate for greenhouse temperature control is 98.61% and soil moisture control is 99.95%. The greenhouse temperature control time was 47 minutes 44.4 seconds and the soil moisture control time was 41 minutes 51.6 seconds. The stability of the tool results in stable performance. The height growth of chili plants with the control system (in the greenhouse) was better than without the control system (outside the greenhouse).
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Telaumbanua et al. (2024) studied this question.
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