Sistem Kontrol Monitoring Suhu Dan Kelembaban Pada Ecosolar Instore Onion Dryer Bawang Merah Di Desa Brumbungan Lor Probolinggo

Nugraha, Dito Pramudya (2026) Sistem Kontrol Monitoring Suhu Dan Kelembaban Pada Ecosolar Instore Onion Dryer Bawang Merah Di Desa Brumbungan Lor Probolinggo. Undergraduate thesis, Politeknik Negeri Jember.

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Abstract

EcoSolar Instore Onion Dryer is an onion drying device based on an Arduino system. This study aims to design and evaluate a temperature and humidity monitoring and control system for a solar panel-based shallot drying device in Brumbungan Lor Village, Probolinggo Regency. The developed system is intended to improve the efficiency of the drying process through automatic temperature and humidity regulation. The system utilizes a DHT22 sensor for temperature and humidity measurement, an Arduino microcontroller as the main controller, a 20×4 I2C LCD for real-time data display, an RTC DS1307 module for time recording, an SD Card as data storage media, and relays to control the heater and exhaust fan. This research employed a descriptive approach, involving system component testing and analysis of monitoring results during the drying process. The results showed that the DHT22 sensor was able to accurately record temperature and humidity data. The 20×4 LCD displayed temperature, humidity, and time data in real time, while the RTC DS1307 module provided accurate timekeeping. The SD Card consistently stored measurement data in CSV format. Relay testing showed that the heater was activated when the temperature was ≤45°C and deactivated when the temperature reached ≥48°C according to the programmed control logic. The exhaust fan also operated effectively, turning ON when humidity was ≥45% RH and OFF when humidity was ≤40% RH, helping maintain stable conditions inside the drying chamber.

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