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All Journal Buletin Udayana Mengabdi Jurnal SPEKTRUM TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Jurnal Ilmiah Kursor International Journal of Engineering and Emerging Technology Informatika Jurnal Teknik Industri Terintegrasi (JUTIN) Jurnal Riset Sistem Informasi dan Teknologi Informasi (JURSISTEKNI) Journal of Artificial Intelligence and Digital Business Majalah Ilmiah Teknologi Elektro Jurnal SPEKTRUM
Lie Jasa
Electrical Engineering Department, Udayana University
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Library & Information Science Mechanical Engineering Other

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RANCANG BANGUN LAMPU OTOMATIS UNTUK TANAMAN BUAH NAGA BERBASIS SMART AGRICULTURE Abdul Qodir; Lie Jasa; Wayan Gede Ariastina
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p5

Abstract

Indonesia is an agrarian country rich in agricultural commodities, one of which is dragon fruit. Dragon fruit has high economic value and health benefits. However, the productivity of dragon fruit plants is greatly influenced by the duration and intensity of sunlight, which becomes a challenge during the rainy season or days with low light intensity. This study aims to design an automatic lighting control system based on a microcontroller with On/Off scheduling features to support dragon fruit cultivation in Krajan Village, Yosomulyo Village, Banyuwangi Regency. This system utilises Internet of Things (IoT) technology and the NTP protocol for time synchronisation, enabling real-time monitoring of sensors and lighting control without direct user intervention. The method used involved the design and testing of the microcontroller from January to February 2025. Test results indicate that the use of yellow LED lights can enhance flowering and plant growth by extending photosynthesis duration, particularly at night. Thus, this system effectively increases dragon fruit productivity and quality while providing an efficient solution for farmers facing natural lighting limitations.
RANCANG BANGUN SOLAR TRACKER SINGLE AXIS BERBASIS ARDUINO UNO Ngurah Yowana Asta Prawangsa; I Gusti Made Bagus Kurniawan; Ida Bagus Alit Swamardika; I Wayan Arta Wijaya; Lie Jasa; Pratolo Rahardjo; I Putu Elba Duta Nugraha
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p9

Abstract

Indonesia has abundant solar energy potential; however, its utilization remains limited due to dependence on fossil fuels and the low efficiency of solar panels caused by static installation systems. To address this issue, this study designed and developed a prototype of an automatic single-axis solar tracker based on Arduino Uno to optimize solar energy absorption. The system is controlled by the Arduino Uno R3 for automatic adjustment of the solar panel position, and the ESP32 is used for real-time monitoring of environmental and electrical parameters. The sensors employed include the BH1750 for light intensity, DHT22 for temperature and humidity, INA219 for voltage and current, and ACS712 for current. Test results indicate that the system is capable of automatically adjusting the solar panel angle, accurately monitoring environmental parameters, and generating stable electrical power for eight hours. Although some instability in current readings was observed when the system operated on battery power, the prototype has proven effective and feasible for further development to enhance the utilization of solar energy.
RANCANG BANGUN PROTOTYPE MONITORING SYSTEM BERBASIS INTERNET OF THINGS PADA INKUBATOR PENETASAN TELUR AYAM Devin Gede Herawan; I Kadek Agus Arta Yasa; Ida Bagus Alit Swamardika; Lie Jasa; I Wayan Arta Wijaya
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p16

Abstract

The hatching process of chicken eggs is highly dependent on a stable incubation environment, especially consistent and standard temperature and humidity. Fluctuations or instability of conditions within the incubator can significantly reduce the success rate of egg hatching (hatching) as well as degrade the quality of the chicks produced. In response to this challenge, this study developed an Internet of Things (IoT)-based monitoring system. The system is designed to monitor crucial parameters such as temperature, humidity, electric current, and voltage inside the incubator. The data collected from the monitoring is then transmitted using the ESP32 module to the ThingSpeak platform. This integration allows users to monitor the condition of the incubator at any time and remotely over an internet connection, providing flexibility and ease of supervision. The test results show that the developed system is able to provide accurate and responsive environmental condition data, and plays an important role in maintaining the stability of the incubation environment. This is expected to increase egg hatchability and support the production of better quality chicks.
Rancang Bangun PLTS Off-grid Untuk Catu Daya Lampu Penerangan Kebun Buah Naga Desa Yosomulyo Aldy Allan Ghozali; Lie Jasa; I Nyoman Satya Kumara
Majalah Ilmiah Teknologi Elektro Vol 24 No 2 (2025): ( Juli - Desember ) Majalah Ilmiah Teknologi Elektro
Publisher : Study Program of Magister Electrical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.205.v24i02.P2

Abstract

The sunlight intensity level requirement for dragon fruit plants is more than 90%, which is essential for the photosynthesis process and the morphological development of the plant. This plant is classified as long-day plant, meaning that it requires at least 12 hours or more of sunlight to reproduce. Dragon fruit farmers utilize artificial lighting as an alternative to sunlight to support the plant's biological processes at night. The energy source is conventional electricity from grid (PLN). The design of an off-grid PV system at the Yosomulyo dragon fruit farm is carried out to support the farm's daily electricity needs. The design begins with field observations to obtain geographic data of the farm, daily electrical load profile data with amperes, calculating the PV system capacity, determining PV system components, and testing the performance of the design with PVSyst simulation. The simulation results of the PLTS design are 70.9% with an inverter variation of 6500 W, solar modules of 550 Wp, batteries of 200 Ah 12 V at a system voltage of 48 VDC, and an autonomy day of 1.
Rancang Bangun Prototype Monitoring Instalasi PengolahanAir Limbah (IPAL) Di Suwung Berbasis Internet of Things Mohammad Putra Maulidin; Khaeril Gusri; Daffa Dzaudan; Lie Jasa; Arta Wijaya
Majalah Ilmiah Teknologi Elektro Vol 24 No 1 (2025): ( Januari - Juni ) Majalah Ilmiah Teknologi Elektro
Publisher : Study Program of Magister Electrical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.205.v24i01.P10

Abstract

Wastewater management is a critical component of environmental sustainability, particularly in regions undergoing rapid industrial development such as Bali. The Wastewater Treatment Plant (IPAL) in Suwung plays an essential role in ensuring that effluents meet environmental quality standards mandated by regional and national regulations. However, current monitoring practices at the facility are conducted manually, resulting in potential delays in pollution detection and timely decision-making. This study proposes the design and implementation of an Internet of Things (IoT)-based prototype for real time wastewater quality monitoring. The system integrates multiple sensors-including pH, temperature, turbidity, and water level sensors-controlled by an arduino UNO microcontroller and ESP 32 module. Measurement data are transmitted to Blynk and ThingSpeak platforms in real time, stored in a data logger for further analysis, and made accessible via a web-based monitoring interface. The results demonstrate that the system is capable of delivering accurate and real time data, which can support more efficient monitoring and facilitate timely environmental management decisions. This prototype offers a reliable and scalable solution for digitizing wastewater monitoring processes in treatment facilities
Solusi Efisiensi Pertanian: Rancang Bangun Perangkat Otonom, Detektor Mutu, dan Pisau Ganda Berbasis IoT Bagi Traktor Roda Dua Konvensional Gabriella Sunsugos Sianturi; Lie Jasa
Majalah Ilmiah Teknologi Elektro Vol 24 No 2 (2025): ( Juli - Desember ) Majalah Ilmiah Teknologi Elektro
Publisher : Study Program of Magister Electrical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.205.v24i02.P5

Abstract

The issue of limited human resources in the agricultural sector, particularly in terms of labor availability, has led to increased operational costs and decreased harvesting efficiency. On the other hand, existing IoT-based tractors are generally large-scale and expensive, making them inaccessible to smallholder farmers. To address this challenge, this study proposes the development of a modular attachment for conventional two-wheeled tractors. The device is designed to be efficient, affordable, and capable of minimizing dependence on human labor without requiring the replacement of the main tractor unit. The proposed solution includes a dual blade system (for both tilling and harvesting), a harvest quality detection system, and IoT-based autonomous navigation. All components are integrated into a single functional module that can be attached to existing two-wheeled tractors owned by farmers. This approach eliminates the need to purchase a new tractor, as the innovation enhances the functionality of equipment already in use. Additional advantages include the installation of a mechanical counterweight to stabilize the tractor during operation and the integration of quality detection capabilities, which improve efficiency by enabling simultaneous harvesting and quality monitoring. This study demonstrates that transforming conventional tractors into semi-autonomous systems can significantly enhance labor efficiency, harvesting precision, and reduce operational costs. The innovation offers a sustainable approach to agricultural modernization through the integration of modular technology and IoT, tailored for small to medium-scale farming.
Rancang Bangun Prototype Pembangkit Listrik Tenaga Mikro Hidro (PLTMH) Dengan Studi Kasus Saluran Irigasi Di Desa Medewi Kecamatan Pekutatan Kabupaten Jembrana Irene Trivania; Tom Gerraldo Salomo Situmeang; Martin Luhut Ariberthson Sihaloho; Anak Agung Ngurah Amrita; Lie Jasa; I Wayan Sukerayasa; Pratolo Rahardjo; Dewa Ayu Sri Santiari
Majalah Ilmiah Teknologi Elektro Vol 24 No 1 (2025): ( Januari - Juni ) Majalah Ilmiah Teknologi Elektro
Publisher : Study Program of Magister Electrical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.205.v24i01.P08

Abstract

Micro Hydro Power (MHP) is a small power plant that uses water to generate electricity. It can be found in irrigation canals, rivers, or waterfalls. The amount of water and head height are important factors in determining the power output. The irrigation canal in Medewi Village is being used as a research location for MHP. Researchers will use the data to perform calculations and design a prototype. They will also conduct an economic analysis of the MHP to determine its feasibility. The discharge at the research location is 0.23 m3/s, and the waterfall is 2.24 m high. Through the calculation results, the researchers determined that the turbine is a crossflow turbine. The turbine power is 3.9 kW, the generator power is 4.375 kVA, and the turbine power in the homer software is 4.195 kW. The cost of building the MHP in the irrigation canals in Medewi Village is IDR20.391.899,26. With a 6% discount rate, the BCR is 1,51, the NPV value is IDR30.827.069, the IRR is 12,3%, and the BEP result per unit The payback period is 1 year 5 months and 2 weeks. Selling 46.585,056 kWh results in an LCC of IDR44.598.314. Using MHP throughout its economic life results in a cost that is less than the price paid to PLN.
Cover Vol 24 No 2 tahun 2025 Lie Jasa
Majalah Ilmiah Teknologi Elektro Vol 24 No 2 (2025): ( Juli - Desember ) Majalah Ilmiah Teknologi Elektro
Publisher : Study Program of Magister Electrical Engineering

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/

Abstract

Cover Vol 24 No 2 tahun 2025
Co-Authors A. Andriani A.I. Weking Abdul Qodir Achmad Bahri Aditya Pradana, Aditya Aldy Allan Ghozali Alif Rizqian Aki Amalia, Zakiyah Anak Agung Istri Ngurah Marhaeni Anak Agung Ngurah Amrita angga kharisma krishnastana Antonius Ibi Weking Antonius Ibi Weking Ardy Wijaya Ardyono Priyadi Arta Wijaya Daffa Dzaudan Dalimunthe, Ernando Rizki Daniel Kristama Devin Gede Herawan Dewa Ayu Sri Santiari Dewa Made Wiharta donny christiawan Duman Care Khrisne Dwi Suryadewi Efina Marianis Eka Lilla Ananta Elka Pranita Ernando Rizki Dalimunthe G M Arya Sasmita Gabriella Sunsugos Sianturi Gde Brahupadhya Subiksa Gde Dendy Denhero Gede Pudja Dianda Mayapada Gregory Rama Darantiah Ruing H. Daniel Hindro Kusumo Wahid I B GD Siwa Puja Bujawan I Gede Abi Yodita Utama I Gede Agus Darmawan I Gede Ngurah Arya Raditya I Gede Widnyana Putra I Gst Agung Putu Raka Agung I Gst Md Ngurah Bimantara I Gusti Agung Indrawan I Gusti Agung Made Yoga Mahaputra I Gusti Made Bagus Kurniawan I Gusti Ngurah Agastya Citranath I Gusti Ngurah Agung Jaya Sasmita I Gusti Ngurah Saputra I Gusti Ngurah Wira Partha I Gusti Putu Andhita Mahayana I Gusti Putu Mastawan Eka Putra I Kadek Agus Arta Yasa I Kadek Ardika I ketut Gede Darma Putra I Ketut Wiryajati I Made Anand Gopal I Made Ardika Tommy Saputra I Made Suartika I Made Sukarsa I N Satya Kumara I Nyoman Setiawan I Nyoman Wira Mastika I Putu Ardana I Putu Elba Duta Nugraha I Putu Juliana I Putu Wahyu Indra Wedanta I Wayan Arta Wijaya I Wayan Budiarsana Saputra I Wayan Sukerayasa I. K. A. Handayana I. K. A. Sukariawan I.D.N.A. Purnata I.G.N.S. Bramantha P I.K.H. Valentino I.P. Ardana I.P. Kuswara A P Ida Ayu Dwi Giriantari Ida Ayu Sri Sinta Anjani Ida Bagus A. Swamardika Ida Bagus Agung Eka Mandala Putra Ida Bagus Dwiki Dharma Putra Ida Bagus Gede Manuaba Ida Bagus Krishna Putra Irene Trivania IWA Wijaya Jaka Persada Sembiring Joannes Mario Graciano Kapu Kadek Darmaastawan Kadek Rekha Agustha Kapu, Joannes Mario Graciano Khaeril Gusri l Gusti Ngurah Janardana L.G.M. Karisma Linawati Linawati Made Dinda Pradnya Pramita Made Sri Indra Dewi Adnyana Made Sudarma Makmur Fernando Manuaba, Ida Bagus Gede Martin Luhut Ariberthson Sihaloho Mauridhi Hery Mauridhi Hery Purnomo Moch Deny Triatmaja Mohammad Putra Maulidin Nanda Dana Pala Naradhiya, Gede Ngurah Yowana Asta Prawangsa Ni Komang Ayu Sri Anggreni Ni Wayan Lusiani Nia Paramitha Novia Utami Putri Nyoman Putra Sastra P. A. S. Cempaka Pala, Nanda Dana Pedro Paulo De J. Costa Henriques Pranita, Elka Pratolo Rahardjo Putri Agung Permata Sari Putu Althea Putri Wiradani Putu Ardana Putu Arya Mertasana Putu Lanang Bagus Suputra Jaya Amertha Putu Risanti Iswardani Rama Beta Herdian Ratna Ika Putri Ronilaya, Ferdian Rukmi Sari Hartati Rukmi Sari Hartati Saputra, Dharma Bagus Semuel Kete Sarungallo Sianturi, Rednal Josua Surya Pramana Suryadewi, Dwi Syamsiana, Ika Noer Togatorop, Josua Febrian Tom Gerraldo Salomo Situmeang Triatmaja, Moch Deny Veronica Ambassador Flores Wayan Gede Ariastina Wiener Nixon Nababan Y. Lapian Yanu Prapto Sudarmojo Yanu Prapto Sudarmojo Zulfachmi, Zulfachmi