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Jurnal Nasional Teknologi Komputer
Published by CV. HAWARI
ISSN : 28087801     EISSN : 28084845     DOI : -
Core Subject : Science,
Computer Science & IT
Jurnal Nasional Teknologi Komputer di bidang ilmu komputer dan teknologi. Jurnal JNASTEK diterbitkan oleh CV. Hawari. Redaksi mengundang peneliti, praktisi, dan mahasiswa untuk menulis perkembangan ilmiah di bidang-bidang yang berkaitan dengan teknologi informasi, teknik informatika dan sistem komputer. Jurnal JNASTEK terbit 4 (Empat) kali dalam setahun pada bulan Januari, April, Juli dan Oktober. Jurnal ini berisi artikel penelitian dan kajian ilmiah.
Arjuna Subject : Ilmu Komputer (semua kategori) - Perangkat Lunak
Articles 249 Documents
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Rancang Bangun Website Multimedia Dengan Metode Waterfall Dalam Mempromosikan Katering Bu Lela Dina Anzani; Supiyandi; Solly Aryza
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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Abstract

Bu Lela Catering is one of the UMKM that provides catering services for events such as weddings, birthdays, or office meetings. However, Bu Lela Catering currently relies solely on conventional promotional methods, namely word of mouth. Given this situation, there is a need for a promotional medium that can convey information more effectively and efficiently. Through the use of website-based promotional media, it is hoped that Bu Lela Catering will be able to expand its promotional reach and present product information in a structured manner. The designed website will include various important information such as business profiles, menu lists, catering package options. Bu Lela Catering's website system uses WordPress and was developed using the Waterfall method, which includes the stages of analysis, design, implementation, testing, and maintenance. In general, the design and development of Bu Lela Catering's promotional website are excellent in terms of system and make it easier for customers to access information.
Implementasi Metode Waterfall pada Perancangan dan Pembuatan Website Layanan Promosi Bengkel Las ALS Binjai Jesica Siva; Supiyandi; Nova Mayasari
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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Abstract

This research discusses the design and creation of a promotional service website by implementing the waterfall method. The waterfall method was chosen because its linear and sequential approach is suitable for projects with clear objectives. The process begins with an analysis phase to identify features such as profile pages, service galleries, contact information, and location map integration. And design, followed by implementation using HTML, CSS, and JavaScript. Testing covers functionality and responsiveness, as well as maintenance. The result is a website that effectively promotes welding shop services. The conclusion shows that the waterfall method demonstrates a strong structure that reduces the risk of errors, although it is not flexible in terms of changes, and this website supports the digital promotion of welding shops.
Perancangan Sistem Layanan Pemesanan Online pada Warung Bakso Bacok Sarina Berbasis Web Qanitah Taqwa; Abdul Khaliq; Supiyandi
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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Abstract

The rapid advancement of digital technology requires Micro, Small, and Medium Enterprises (UMKM) to adapt to the implementation of web-based systems in order to improve efficiency and service quality. Warung Bakso Bacok Sarina is one of the culinary businesses that still implements a manual ordering process, which often causes problems such as long queues. This study uses the Waterfall method, which includes the stages of requirements analysis, system design, implementation, testing, and maintenance to reduce the risk of errors in website design. The research was conducted to design a web-based online ordering system to make it easier for customers to place orders and improve the operational efficiency of Warung Bakso Bacok Sarina.
Rancang Bangun Website Profil Desa Manik Maraja Sebagai Media Informasi Digital Indriani Aulia Rahmadani; Mohammad Yusup; Supiyandi
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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Abstract

In the context of globalization, the advancement of information technology necessitates enhanced efficiency in managing data, particularly within village governance. Manik Maraja Village continues to depend on traditional methods, such as bulletin boards, banners, and oral communication, leading to inadequate dissemination of information and restricted access for the public to current updates. This research endeavors to create and develop a web-based village information system that supports effective and transparent management and distribution of data. The approaches applied involve collecting data through observation, interviews, and literature review, coupled with the use of the Waterfall model for system development. The system incorporates features like village profiles, news, event schedules, and other details that can be accessed instantly by the community. The adoption of this technology is projected to foster digital transformation at the village administration level, boost community engagement, and offer solutions to the complexities of information handling in the digital age.
ANALISIS PORTABEL PLTS SEBAGAI SUMBER ENERGI LISTRIK ALTERNATIF DAN PENERANGAN PADA BUDIDAYA IKAN LELE (STUDI KASUS TERNAK KLAMBIR 5 ) Ricky Adesa Pratama; Haris Gunawan; Zuraidah Taro
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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Abstract

Keterbatasan akses energi listrik pada sektor perikanan, khususnya budidaya ikan lele, masih menjadi permasalahan utama di beberapa wilayah. Kebutuhan energi listrik diperlukan untuk menunjang penerangan kolam pada malam hari serta pengoperasian sistem pendukung budidaya. Salah satu solusi yang dapat diterapkan adalah pemanfaatan Pembangkit Listrik Tenaga Surya (PLTS) portabel sebagai sumber energi listrik alternatif yang ramah lingkungan dan mandiri. Penelitian ini bertujuan untuk menganalisis kinerja sistem PLTS portabel dalam memenuhi kebutuhan energi listrik untuk penerangan pada budidaya ikan lele. Metode penelitian yang digunakan adalah deskriptif kuantitatif dengan pendekatan studi kasus pada satu lokasi kolam budidaya ikan lele. Sistem PLTS portabel yang dianalisis terdiri dari panel surya berkapasitas 50 Wp, baterai 12 V 5 Ah yang dirangkai menjadi 24 V 10 Ah, solar charge controller, inverter 1000 W, serta beban lampu LED. Parameter yang dianalisis meliputi tegangan, arus, daya keluaran, energi harian, dan kemampuan sistem dalam menyuplai beban penerangan. Pengambilan data dilakukan melalui pengukuran langsung pada rentang waktu pukul 11.00 hingga 16.00 WIB dengan kondisi cuaca cerah. Hasil pengujian menunjukkan bahwa tegangan panel surya berada pada rentang 15,4–20,7 Volt dengan arus maksimum sebesar 2,5 Ampere. Perhitungan daya total sistem menunjukkan nilai sekitar 262,10 Watt, dengan energi listrik harian yang dihasilkan berkisar antara 200–240 Wh. Energi tersebut mampu memenuhi kebutuhan penerangan kolam ikan lele menggunakan lampu LED berdaya total 30 Watt selama ±8 jam. Berdasarkan hasil penelitian, dapat disimpulkan bahwa PLTS portabel layak digunakan sebagai sumber energi listrik alternatif yang efisien, fleksibel, dan berkelanjutan untuk mendukung kegiatan budidaya ikan lele.
Analisis Perencanaan Sistem Tenaga Listrik Untuk Keandalan Operasional CCTV Berbasis Energi Terbarukan M Rizki Liano; Pristisal Wibowo; Muhammad Erpandi Dalimunthe
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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Abstract

Solar energy is a renewable energy source that can be effectively utilized to generate electricity through photovoltaic cells. This research aims to plan an off-grid Solar Power Plant (PLTS) at the Sejahtera Islamic Boarding School Multipurpose Building. The system is designed as an alternative energy source to ensure the continuous operation of a 24-hour CCTV security system. The methodology included literature studies, field observations, and data collection to design a reliable power system. Implementing a PLTS is highly recommended due to its minimal emissions and eco-friendly nature. Based on the planning and analysis, implementing this off-grid PLTS to support the operational reliability of the CCTV system is highly feasible. The research location possesses adequate solar potential, with an average sunlight duration of approximately 4.5 hours per day. This capacity is sufficient to meet the 24-hour electrical energy needs of the CCTV and its supporting devices. System planning demonstrates that the daily load requirement of 432 Wh can be fulfilled using one 100 Wp solar panel module, two 12 V 33 Ah batteries, a 500 W inverter, and a 20 A Solar Charge Controller (SCC). Ultimately, this off-grid PLTS ensures an uninterrupted electricity supply during PLN network outages. It serves as an environmentally friendly, economical, and sustainable solution to enhance CCTV-based security systems in Islamic boarding schools and similar facilities.
Analisis Kinerja Dan Efesiensi Sistem Kontrol Motor Induksi 3 Fasa Menggunakan Variable Speed Drive Pada Pompa Proses Fatty Acid Di PT. Permata Hijau Palm Oleo Bagas Saputra; Ahmad Dani; Beni Satria
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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Abstract

This study investigates the performance and energy efficiency of a three-phase induction motor controlled by a Variable Speed Drive (VSD) in a fatty acid pump system at the Permata Group processing plant. The research is motivated by the increasing need for energy savings and operational reliability in continuous industrial processes where pump load profiles are highly dynamic. The objective of this study is to evaluate the effectiveness of VSD implementation in reducing energy consumption and improving motor operating characteristics under real plant conditions. Data were collected during actual production cycles through direct measurement of electrical and mechanical parameters, including current, voltage, frequency, torque, flow rate, and power consumption. The analysis compares the performance of the pump system before and after the application of VSD, using descriptive statistical analysis and graphical evaluation of motor behavior under various load conditions. The results demonstrate that the application of VSD significantly reduces energy consumption at partial loads while maintaining stable pump output and minimizing mechanical stress. The motor also shows improved operating efficiency and lower thermal loading compared to constant-speed operation. These findings indicate that VSD-based control offers a practical and cost-effective solution for industrial pump systems, especially in fatty acid processing operations where flow demand fluctuates during production. The practical implications are substantial, highlighting opportunities for energy conservation, equipment longevity, and process optimization without compromising product quality or throughput, making the system suitable for broader adoption in similar industrial environments.
Pengembangan Sistem Pendeteksi Kantuk Pengemudi Berbasis Arduino Nano Dan Sensor Eye Blink Jon Pranki Manik; Beni Satria; Hamdani
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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Abstract

Driving safety has become a crucial issue in Indonesia due to the high number of traffic accidents caused by driver fatigue, particularly drowsiness that triggers microsleep and temporary loss of consciousness. This study aims to develop a driver drowsiness detection system based on Arduino Nano and infrared eye blink sensor that detects drowsiness indicators through blink frequency and duration, evaluates the effectiveness of early warnings via buzzer, and identifies technical constraints to enhance reliability in driving simulations. The research method employs a research and development approach with an experimental design, involving 15 participants aged 19-25 years tested in normal conditions and drowsiness simulations for 30 minutes per session, with data collection through eye blink sensor, Arduino Nano, and subjective validation using the Karolinska Sleepiness Scale. Testing shows the system achieves a microsleep detection accuracy of 98% based on eye closure duration exceeding 500 ms and 96% accuracy based on blink frequency below 12 times per minute, with an average response time of 178 ms until buzzer activation, thus capable of providing early warnings before full microsleep occurs. The implications of this research offer a portable, low-cost solution without reliance on complex infrastructure for mitigating accident risks in developing countries, although it still requires optimization against environmental variations such as lighting and head movements for real-world applications on the road.
ANALISIS PERBAIKAN JATUH TEGANGAN DAN REDUKSI RUGI DAYA MELALUI UPRATING KONDUKTOR SERTA PENYEIMBANGAN BEBAN PADA SISTEM DISTRIBUSI DI PT. PLN ULP TEBING TINGGI Ismail; Dino Erivianto; Zuraidah Tharo
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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Abstract

Analisis perbaikan jatuh tegangan dan reduksi rugi daya melalui uprating konduktor serta penyeimbangan beban pada sistem distribusi di PT. PLN ULP Tebing Tinggi. Sistem distribusi tenaga listrik sering menghadapi tantangan operasional signifikan pada jaringan tegangan rendah, terutama di wilayah dengan karakteristik panjang saluran besar, konduktor berpenampang terbatas, dan ketidakseimbangan beban antar fasa. Di ULP Tebing Tinggi, fenomena jatuh tegangan tinggi tercatat di ujung feeder jauh dari gardu utama, sementara rugi daya akibat aliran arus dan resistansi saluran menjadi beban biaya dan teknis bagi penyedia layanan. Penelitian ini menggunakan pendekatan kuantitatif berbasis analisis teknis yang menggabungkan pengukuran lapangan, perhitungan matematis, dan simulasi sistem tenaga menggunakan software ETAP. Pengukuran menunjukkan beban total gardu TT38 mencapai 91,69 kVA dengan ketidakseimbangan arus yang signifikan. Tegangan di ujung jaringan mengalami penurunan drastis menjadi 184 V dari tegangan pangkal 222-228 V, dengan jatuh tegangan sebesar 25,26% dan rugi daya 14,94 kW. Skenario uprating konduktor dengan mengganti kabel TIC 2×10 mm² menjadi TIC 3×70+1×50 mm² pada segmen 250 meter terakhir menunjukkan peningkatan signifikan. Hasil perhitungan dan simulasi ETAP konsisten menunjukkan penurunan jatuh tegangan dari 25,26% menjadi 3,61% (202,24 V) dan pengurangan rugi daya dari 14,94 kW menjadi 12,37 kW. Perbaikan ini berhasil membawa tegangan minimum ke dalam batas standar SPLN (198-231 V) yang sebelumnya tidak terpenuhi.
Desain Dan Pembangunan Sistem Layanan Virtual Penjualan Berbasis Website di PT. Adidaya Andalan Asia Anjelita Septiurma Gea; Ricky Ramadhan Harahap; Rahmadani
Jurnal Nasional Teknologi Komputer Vol 6 No 2 (2026): April 2026
Publisher : CV. Hawari

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Abstract

The development of information technology has encouraged companies to shift from manual sales processes to more effective and efficient computerized systems. This study aims to design and develop a web-based virtual sales service system at PT Adidaya Andalan Asia that integrates centralized management of product data, customer data, sales transactions, and sales reporting. The system was developed using the PHP programming language and a MySQL database with a modular system architecture that is easy to expand. System testing was conducted functionally using the black-box method, including alpha testing by developers and beta testing by users, to ensure that the system operates according to requirements. The results show that the web-based virtual sales service system improves sales process efficiency, minimizes data recording errors, and provides accurate and easily accessible sales information to support evaluation and managerial decision-making at PT Adidaya Andalan Asia.

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