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All Journal IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Harahap, Akhirul April
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Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Sistem Otomatisasi Pengendalian Kelembaban menggunakan Sensor DHT21 dan Modul Peredup Arus Bolak-Balik (AC Light Dimmer) Mansyur, Syaiful; Harahap, Akhirul April
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.339

Abstract

This study analyzes an environmental control system based on an AC Light Dimmer, integrating ADC values, AC voltage, and RPM for drying applications. The results reveal a strong linear relationship between ADC values and AC voltage, with blower RPM increasing proportionally to the voltage. The system successfully reduced humidity from 60% to 26.3% and increased temperatures from 35.6°C to 50.6°C automatically via DHT21 sensors. While the ADC performed well, potential saturation at high voltages requires careful design consideration. Overall, the microcontroller-based dynamic RPM control effectively optimizes drying processes with high precision and energy efficiency. This system is highly applicable to raw-material processing industries that require stable environmental control to minimize product damage and reduce power consumption.
Co-Authors Mansyur, Syaiful