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All Journal JTEV (Jurnal Teknik Elektro dan Vokasional Bulletin of Electrical Engineering and Informatics Panrita Abdi - Jurnal Pengabdian pada Masyarakat Jurnal Fokus Elektroda : Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali TIN: TERAPAN INFORMATIKA NUSANTARA Jurnal Sains dan Teknologi Jurnal Fokus Elektroda (Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Applied Environmental Science Bulletin of Informatics and Data Science Media Elektrik Journal of Renewable Energy and Smart Device
Asminar Asminar
Department Of Electrical Engineering, Faculty Of Engineering, Halu Oleo University, Kendari, Southeast Sulawesi 93231
Aerospace Engineering Arts Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Social Sciences Veterinary Other

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Smart measurement revolution using long range technology and HLW8012 sensor integration Isminarti Isminarti; Nanang Roni Wibowo; Asminar Asminar; Mohamad Ilyas Abas; Muhammad Ali Chandra; Nur Azhary Iriawan Eka Putra; Widya Wisanty; Fauziah Fauziah; Deny Wiria Nugraha; Chaira Saidah Yusrie
Bulletin of Electrical Engineering and Informatics Vol 15, No 4: August 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v15i4.10823

Abstract

Long range (LoRa) has advantages compared to other communication systems such as power line control (PLC), narrowband internet of things (NB-IoT), and Sigfox. The advantage of low power consumption is the implementation and reliability of LoRa communication systems across all segments of smart grid (SG) and home automation applications. Parameters of the reliability of the communication system can also be seen from the maximum distance, signal strength, and network quality in indoor and outdoor conditions as well as different heights and levels of signal collisions when transmitted. This study aims to utilize unlicensed LoRa Shield SX1276 on the 915 MHz frequency spectrum for SG communication networks to monitor messages in the form of current, voltage, and power factor using the HLW8012 sensor. This research produces a complete LoRa communication system monitoring product according to the information needed by the user.
Design and Evaluation of an IoT-Based Monitoring and Biogas Distribution Control Prototype Using Palm Oil Mill Effluent Rifki Rifki; Asminar Asminar; Abdul Djohar; Mustarum Musaruddin; Hasmina Tari Mokui; Adhi Setiawan Samsul
Jurnal Media Elektrik Vol. 23 No. 3 (2026): MEDIA ELEKTRIK
Publisher : Jurusan Pendidikan Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/metrik.v23i3.13277

Abstract

Palm Oil Mill Effluent (POME) can be converted to biogas through anaerobic digestion; however, prototype-scale monitoring requires careful interpretation of low-cost sensor data. This study developed and performed a preliminary functional evaluation of an ESP32-based monitoring and biogas distribution control prototype using a 120-L digester charged with 50 L of POME and 50 L of water for four weeks. Five-point comparisons yielded mean absolute errors of 1.10 °C for the DS18B20 temperature sensor, 0.10 bar for the WPT83-G pressure sensor, and 0.132 V for the PZEM-004T voltage channel, respectively. The Blynk dashboard was programmed to update every 2 s, which was not a network latency measurement. Digester MQ-4 nominal readings increased from 0-351 in week 1 to 1,988-3,420 in week 4, while gas-bag readings reached 450-750. Because the MQ-4 sensor was not calibrated with certified methane mixtures, these values are relative gas-sensitive readings rather than validated methane concentrations. Both solenoid valves followed four commanded on/off states. Therefore, the prototype demonstrates proof-of-concept functional integration of sensing, visualization, and valve actuation, while gas composition, gas volume, network reliability, and generator performance require further validation.
Evaluation And Improvement of the Grounding System to Reduce Grounding Resistance Using ETAP in a Retail Warehouse Muh. Aditya Fathur Rahman; Asminar Asminar; Abdul Djohar; Tambi Tambi; Yuni Aryani Koedoes; Adhi Setiawan Samsul
Jurnal Media Elektrik Vol. 23 No. 3 (2026): MEDIA ELEKTRIK
Publisher : Jurusan Pendidikan Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/metrik.v23i3.14394

Abstract

The grounding system is a critical component of an electrical installation because it diverts fault currents to the ground and limits potentially hazardous voltages. This study aimed to evaluate the condition of the existing grounding system in a retail warehouse, analyze the initial effectiveness of a mixture of limonite, wood charcoal, and gypsum as a soil treatment material, and evaluate a recommended grounding design using ETAP. This study employed a quantitative approach through field experiments and simulations. Grounding resistance was measured using an Earth Tester with the three-point method. Five grounding points were treated with a mixture of 2 kg per point, consisting of 40% limonite, 30% wood charcoal, and 30% gypsum. Preliminary results showed an average resistance of 10.46 Ω across the five points. After treatment, the average resistance decreased to 2.23 Ω with an initial effectiveness of 78.68%, and all treated points were below 5 Ω. In the ETAP simulation of the PLN power source, Grounding 1 produced an Rg of 3.295 Ω, GPR of 2,871.8 V, touch voltage of 1,256.1 V, and step voltage of 422.4 V. The touch voltage still exceeded the tolerance limit of 1,141.4 V. Grounding 2 reduced Rg to 1.860 Ω, GPR to 1,621.0 V, touch voltage to 648.3 V, and step voltage to 219.8 V. These results indicate that the grounding treatment effectively reduced the resistance under the test conditions, whereas Grounding 2 improved the safety of the grounding system in the PLN power source simulation scenario. Keywords: grounding system, grounding resistance, soil treatment, ETAP, touch voltage.
Co-Authors Abdul Djohar Abdul Djohar Abdul Djohar Abdul Djohar Achmad Nur Aliansyah Achmad Nur Aliansyah Adhi Setiawan Samsul Adhi Setiawan Samsul Agustinus Lolok Agustinus Lolok Ahmad Nur Aliansyah Akhyar Muchtar Aldiansyah, Satria Anshari Nur, Muh. Nadzirin Arya Sadewa Chaira Saidah Yusrie Deny Wiria Nugraha Fauziah Fauziah Feliks Eldad Larobu Fika Saputri Fitriah Masud Hasmina Tari Mokui Hasmina Tari Mokui Indra Galugu Indrayati Galugu Indrayati Galugu Indrayati Galulu Isminarti, Isminarti Koedoes, Y.A. Luzi Mulyawati Mansur Masykur Kimsan Mohamad Ilyas Abas Muh. Aditya Fathur Rahman Muhammad Adam Raswadi Muhammad Ali Chandra Muhammad Fiqran Rusydi Mustarum Musaruddin Mustarum Musaruddin Mustarum Musaruddin Mustarum Musaruddin Nanang Roni Wibowo Nasrul Nasrul Nita Zelfia Dinianti Luzi Mulyawati Nur Azhary Iriawan Eka Putra Paula Tamburaka, Irmawati Rifki Rifki Rifki Rifki Rifki Romy Suryaningrat Edwin Simatupang, Minson Subardin Subardin Syahran Rifaldi Tambi Tambi Tambi Tambi Wa Ode Siti Nur Alam Wa Ode Siti Nur Alam Widya Wisanty