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Design and Fabrication of a Microcontroller-Based Automatic LED Grow Light Array System for Leafy Vegetables in Indoor Vertical Hydroponic Nanda, Muhammad Achirul; Saukat, Muhammad; Amaru, Kharistya; Dwiratna, Sophia; Cahyono, Muchamad Ricky Wibo
Jurnal Keteknikan Pertanian Vol. 13 No. 4 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.4.559-575

Abstract

Indoor vertical hydroponic systems require precise and energy-efficient lighting to support optimal growth of leafy vegetables. This study presents the design and fabrication of a microcontroller-based automatic LED grow light system tailored for indoor hydroponics. A tailored LED grow light is necessary because each crop responds uniquely to light quality and intensity, and a customized spectrum ensures optimal growth while minimizing energy use. The system integrates a red–green–blue LED configuration (70:10:20%) with an ESP32 microcontroller, real-time clock (RTC), BH1750 light sensor, keypad interface, and LCD. The lighting cycle was programmed for 12 hours per day and tested continuously over two days. The system demonstrated accurate scheduling, with LED activation at 06:00 and deactivation at 18:00 and a timing deviation of only 1–2 seconds. During operation, the system maintained a stable photosynthetic photon flux density (PPFD) of 260–275 µmol/m²/s, producing an estimated daily light integral (DLI) of about 12 mol/m²/day, which is suitable for leafy vegetable production. Light distribution analysis using cubic interpolation showed that increasing the lamp height from 20 cm to 30 cm improved spatial uniformity, with the most uniform distribution achieved at 30 cm despite a slight reduction in intensity. The system consumed 2.65 kWh per day, covering four LED arrays and the control module. Overall, the proposed system offers a reliable, programmable, and energy-efficient lighting solution for indoor hydroponic environments, supporting sustainable crop production through precise scheduling and an optimized spectral configuration.
A Systematic Literature Review and Bibliometric Analysis of Refuse-Derived Fuel (RDF) as an Alternative Energy Source Risma Mila Rosa; Devi Maulida Rahmah; Muhammad Achirul Nanda; Arief Ameir Rahman Setiawan; Ryozo Noguchi
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 9 No. 2 (2026): April
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v9i2.57919

Abstract

Refuse-Derived Fuel (RDF) has increasingly been explored as an alternative energy source derived from solid waste, offering potential contributions to both energy transition and improved waste management. However, the environmental performance of RDF systems has not been widely examined using comprehensive approaches such as Life Cycle Assessment (LCA) and circular economy frameworks. This study applies a Systematic Literature Review (SLR) combined with bibliometric analysis to identify research trends and thematic developments in RDF studies. A total of 109 Scopus-indexed articles were analyzed using VOSviewer, resulting in nine thematic categories, including fuel characterization, production processes, energy recovery, environmental impact, LCA, circular economy, modeling and simulation, application, and innovation. The findings show that most studies still focus on production and energy recovery, while sustainability oriented topics such as LCA and circular economy remain relatively underexplored.