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All Journal JOURNAL SCIENTIFIC OF MANDALIKA (JSM) Brilliance: Research of Artificial Intelligence Jurnal Pengabdian Cendikia Nusantara Global Advances in Science, Engineering & Technology (GASET)
Oktrison
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Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Medicine & Pharmacology Other

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Inovasi Pengolahan Limbah Pasar Terfermentasi untuk Pelet Ikan pada Pembenihan Ikan Air Tawar di Wilayah Perdesaan Arifin, M.; Ningsih, Radna; Sipahutar, Erwinsyah; Oktrison; Elfina, Sri
Jurnal Pengabdian Cendikia Nusantara Vol 2 No 2 (2024): Jurnal Pengabdian Cendikia Nusantara
Publisher : Lembaga Riset Cendekia, Yayasan Berkah Putera Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70104/pcn.v2i2.97

Abstract

Traditional market waste, such as vegetables, fruit and other organic waste, often becomes a problem in environmental management in rural areas. One potential solution is to process market waste into alternative feed ingredients for freshwater fish hatcheries. This research aims to develop innovations in processing fermented market waste into fish pellets, which can improve the quality of fish feed while reducing environmental impacts. In this research, market waste is fermented with certain microbes to turn it into fish pellets which are rich in nutrients. The research results show that the use of fermented market waste can produce effective and environmentally friendly fish pellets for freshwater fish hatcheries. The processing method used has the potential to reduce dependence on commercial fish feed and optimize available local resources
Integrasi Sistem Kendali Beban Listrik dan Absensi Berbasis RFID untuk Efisiensi Energi di Lingkungan Perguruan Tinggi. Oktrison; Ade Chairullah; Ester Edwar; Erwin Sipahutar
Journal Scientific of Mandalika (JSM) e-ISSN 2745-5955 | p-ISSN 2809-0543 Vol. 6 No. 9 (2025)
Publisher : Institut Penelitian dan Pengembangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/10.36312/vol6iss9pp3620-3630

Abstract

Electricity constitutes a fundamental and indispensable resource within higher education institutions, as a substantial majority of both academic and administrative operations are profoundly dependent on electrical energy. Given the persistent escalation in electricity tariffs and the increasing proliferation of electrical devices, there exists a pressing necessity for technological innovations that facilitate energy conservation and enhanced efficiency. This research endeavor seeks to devise and implement a system that fosters optimal electricity utilization by amalgamating RFID-based technology with an automated attendance detection framework. The system functions autonomously by documenting attendance through the identification embedded in the national e-KTP chip, which concurrently unlocks the classroom door and activates electrical devices such as illumination, air conditioning units, and projectors. The findings of the research demonstrate a 100% efficacy in device functionality and an approximate annual electricity conservation of IDR 3,000,000 per room. This system represents a promising technological advancement for improving energy efficiency while simultaneously contributing to the digital metamorphosis of academic services within universities
Heart Rate Monitoring, Blood Oxygen Levels and Location Determination for Covid 19 Patients Using Internet of Things Technology Sipahutar, Erwinsyah; Oktrison; Budiansyah, Arie; Candra, Rudi Arif; Ilham, Dirja Nur
Brilliance: Research of Artificial Intelligence Vol. 3 No. 2 (2023): Brilliance: Research of Artificial Intelligence, Article Research November 2023
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v3i2.3105

Abstract

The COVID-19 virus is very dangerous. In addition to attacking the lungs, this virus can also attack the heart directly. The relationship between heart health and COVID-19 occurs because blood vessel clots in COVID-19 patients increase the risk of blood vessel disorders and make the heart work harder. Therefore, researchers designed a heart rate monitoring device. This tool serves to maintain heart health and oxygen levels in the patient's blood and can also monitor people under COVID surveillance. The formulation of the problem from this research is how to design an IoT system to monitor COVID-19 patients through heart rate and location and how it performs. The purpose of this study is to analyze the performance of the device and design a tool to measure heart rate and blood oxygen levels through the IoT system and GPS location so that doctors can access heart rate data from any location. This research method uses a Gy-MAX30100 sensor, Wemos, and a GPS module. Of the 2 data samples that have been tested, the highest heart rate value is 78 bpm, the lowest is 76 bpm, and the highest oxygen level is 95 mmHg and the lowest is 93 mmHg. So in conclusion, this tool can make it easier for doctors to get important information about the condition of patients or people under observation that can be accessed by doctors anywhere and anytime via the internet.
AIR QUALITY TEST OF CIGARETTE SMOKE IN COFFEE SHOPS IN SOUTH ACEH Sipahutar, Erwinsyah; Candra, Rudi Arif; Budiansyah, Arie; Oktrison
Global Advances in Science, Engineering & Technology (GASET) Vol. 1 No. 1 (2025): Global Advances in Science, Engineering & Technology (GASET), Article Research
Publisher : Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/gaset.v1i1.61

Abstract

This study aims to analyze air quality in coffee shops in South Aceh using the MQ2 sensor to detect cigarette smoke. Cigarette smoke is a significant source of indoor air pollution and can negatively impact health. The MQ2 sensor was installed in various locations within the coffee shops to measure smoke concentration at different times, including peak and off-peak hours. The measurement results showed variations in cigarette smoke concentration, with peak levels occurring during times of increased customer traffic. Coffee shops with better ventilation systems exhibited lower smoke concentrations, indicating the importance of good air circulation in reducing the effects of cigarette smoke. These findings suggest the need for stricter regulations regarding smoking in public places and improvements in ventilation systems to protect the health of customers and staff. This research provides important insights into indoor air quality management and encourages the implementation of smoke-free policies in coffee shops. From the results of tests conducted in several coffee shops, it was found that the average cigarette smoke content increased in rooms with more than four fans, and that the size of the coffee shop had an influence.
Design and Performance Analysis of a Low-Cost ESP32-Based NAT WiFi Repeater for Indoor IoT Networks Oktrison; Ilham, Dirja Nur; Candra, Rudi Arif; Sipahutar, Erwinsyah
Global Advances in Science, Engineering & Technology (GASET) Vol. 1 No. 2 (2025): Global Advances in Science, Engineering & Technology (GASET), Article Research
Publisher : Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/gaset.v1i2.249

Abstract

The rapid proliferation of indoor Internet of Things (IoT) systems has intensified the need for cost-effective and energy-efficient wireless coverage extension solutions. Conventional commercial WiFi repeaters are often over-provisioned in terms of hardware capability and power consumption, making them unsuitable for small-scale IoT laboratories and energy-constrained environments. Although microcontroller-based platforms such as the ESP32 have been widely used for IoT gateways, their systematic evaluation as Network Address Translation (NAT)-based WiFi repeaters remains limited. This paper presents the design, implementation, and experimental performance evaluation of a low-cost ESP32-based NAT WiFi repeater for indoor IoT networks. The proposed architecture operates in dual-mode (Station + Access Point) configuration using a single 2.4 GHz radio interface and software-based NAT forwarding. Hardware optimization, including Bluetooth deactivation and transmission power tuning, is applied to reduce energy overhead. Experimental measurements conducted in an indoor laboratory environment evaluate throughput, latency, received signal strength indicator (RSSI), and power consumption. Results indicate that the proposed system achieves 15–35 Mbps throughput under single-client conditions, with an average latency increase of 3–8 ms compared to direct router connections. The repeater improves signal strength by up to 18 dB in weak-coverage areas, extending effective indoor coverage by approximately 10–20 m. Measured power consumption remains below 1.2 W during active forwarding, significantly lower than typical commercial repeaters. The main contribution of this work lies in providing a quantified energy–performance characterization of a microcontroller-based NAT repeater.
Co-Authors Ade Chairullah Arie Budiansyah Candra, Rudi Arif Elfina, Sri Erwin Sipahutar Erwinsyah Sipahutar Ester Edwar Ilham, Dirja Nur M. Arifin Ningsih, Radna