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All Journal Jurnal Ilmiah Matrik
Iin Yunita Sari
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Computer Science & IT

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Sistem Kendali Suhu Greenhouse Berbasis Arduino dengan Metode Histeresis dan Override Kelembaban Tanah Iin Yunita Sari; Wibowo, Adi
Jurnal Ilmiah Matrik Vol. 27 No. 3 (2025): Jurnal Ilmiah Matrik
Publisher : Direktorat Riset dan Pengabdian Pada Masyarakat (DRPM) Universitas Bina Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33557/bvtzmw70

Abstract

This study develops an automatic temperature control system for a mustard plant greenhouse in Madukoro Village using an Arduino-based controller implementing hysteresis temperature control and a soil-moisture override mechanism. The system integrates a DHT11 temperature–humidity sensor, an analog soil moisture sensor, an exhaust fan, and an active-LOW relay–driven sprinkler valve. The novelty of this research lies in the combined logic of a 27°C–26°C temperature hysteresis and an override mechanism that forces cooling to remain active when the soil is critically dry, even when the ambient temperature has not yet exceeded the 30°C upper threshold. The system was tested five times under varying environmental conditions. Experimental results show that the system successfully maintains greenhouse temperature within the 26°C–28°C range, reduces relay switching frequency by 86%, and significantly improves environmental stability. The test tables and temperature trend graphs demonstrate a consistent and adaptive system response to changes in both air temperature and soil moisture levels. 
Co-Authors Adi Wibowo