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All Journal International Journal of Applied Power Engineering (IJAPE) Jurnal Edukasi Elektro TELKOMNIKA (Telecommunication Computing Electronics and Control) Sinergi JURNAL NASIONAL TEKNIK ELEKTRO PROSIDING SEMINAR NASIONAL CENDEKIAWAN Jurnal Teknik Jurnal Pengabdian UntukMu NegeRI SainETIn Jurnal Elementer (Elektro dan Mesin Terapan) Dinamisia: Jurnal Pengabdian Kepada Masyarakat Prosiding Seminar Nasional Pakar TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol International Journal of Electrical, Energy and Power System Engineering (IJEEPSE) Jurnal Inovasi Penelitian Prosiding Konferensi Nasional PKM-CSR Journal of Community Service Electrician : Jurnal Rekayasa dan Teknologi Elektro Fleksibel: Jurnal Pengabdian Kepada Masyarakat Jurnal Fokus Elektroda (Energi Listrik, Telekomunikasi, Komputer, Elektronika dan Kendali) Journal of Global Engineering Research & Science (J-GERS) Metrik Serial Humaniora dan Sains Electrical Today
Hamzah Eteruddin
University of Lancang Kuning
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Nursing Public Health Social Sciences Transportation Other

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Analisis Pengereman Dinamik Motor Brushless Direct Current Pada Mobil Listrik Siregar, Josua Perjuangan; Setiawan, David; Eteruddin, Hamzah
Electrical Today Vol 1 No 02 (2025): Electrical Today: December 2025
Publisher : Asosiasi Material Terapan dan Teknologi (AMTT)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65794/J.Electo.1.02.71-78

Abstract

Artikel ini bertujuan untuk menganalisis pengaruh variasi nilai tahanan pada sistem pengereman dinamis terhadap kinerja penghentian dan suhu motor Brushless DC (BLDC) pada mobil listrik. Tiga nilai tahanan eksternal (11 Ω, 15 Ω, dan 18 Ω) diuji pada empat tingkat pembukaan pedal akselerator (25%, 50%, 75%, 100%) menggunakan beban 65 kg di lintasan datar. Parameter yang diukur meliputi waktu henti, jarak henti, dan suhu motor; setiap kondisi diuji ulang lima kali dan dianalisis menggunakan nilai rata-rata. Hasil menunjukkan bahwa penurunan nilai tahanan meningkatkan arus dan torsi pengereman, sehingga waktu dan jarak henti berkurang, disertai penurunan suhu motor. Pada pedal 100%, tahanan 11 Ω menghasilkan waktu henti terpendek (5,75 s), jarak henti terpendek (20,31 m), dan suhu terendah (41,7 °C) dibanding nilai tahanan lainnya. Temuan ini menegaskan bahwa pemilihan nilai tahanan rendah dengan kapasitas daya yang memadai dapat meningkatkan efektivitas pengereman dinamis sekaligus mengurangi beban termal pada motor BLDC.
Smart Keyless Locker Design Using Face Recognition Technology Based on the Internet of Things Jakarta Global University Classroom Rahman, Arizki; Pratama, Legenda Prameswono; Hamzah; Dianova, Brainvendra Widi; Olivia Putri, Arisa; Wilyanti, Sinka; Saud, Safa N
Journal of Global Engineering Research and Science Vol. 4 No. 2 (2025): Vol. 4 No. 2 (December 2025): Journal of Global Engineering Research & Science
Publisher : Jakarta Global University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56904/j-gers.v4i2.162

Abstract

This research presents the design and implementation of an Internet of Things (IoT)-based Smart Keyless Locker integrated with face recognition technology to enhance security and efficiency in classroom locker management at Jakarta Global University. The system replaces conventional mechanical keys with biometric authentication to minimize risks associated with key loss, duplication, and unauthorized access. The hardware architecture consists of a Raspberry Pi as the primary processing unit for facial recognition, an Arduino Mega for actuator control, a camera module for image acquisition, solenoid door locks as locking mechanisms, load cell sensors for locker status detection, and an IoT-based notification system integrated with WhatsApp for real-time monitoring. The facial recognition process utilizes the Haar Cascade Classifier for face detection and the Local Binary Patterns Histograms (LBPH) algorithm for feature extraction and matching. System performance was evaluated under various conditions, including differences in lighting intensity, facial orientation, distance, and face coverings. Experimental results indicate that the system achieved a recognition success rate of 50% under the tested conditions, particularly within a distance range of 40–70 cm and adequate lighting. The average verification time ranged from 1.4 to 2.1 seconds depending on facial angle, while the WhatsApp notification system demonstrated reliable message delivery with an average delay of 4.75 seconds. Although recognition performance decreases when facial features are partially obstructed or when lighting is insufficient, the proposed system demonstrates the feasibility of integrating biometric authentication with IoT technology for modern classroom locker management applications.
Performance and Techno-economic Analysis of a 1.82 kWp Rooftop PV System in the Tropical Climate of Indonesia: A Simulation vs Reality Approach Rifaldi Wahyu Santoso; Dionova, Brainvendra Widi; Hamzah Eteruddin; Kalvin Saputra; Oo Abdul Rosyid; Fariz Maulana Rizanulhaq; Muhammad Irsyad Abdullah
JURNAL NASIONAL TEKNIK ELEKTRO Vol 15, No 1: March 2026
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jnte.v15n1.1427.2026

Abstract

The utilization of renewable energy through rooftop photovoltaic (PV) systems serves as a strategic solution for mitigating climate change; however, their performance in tropical climates often exhibits a deviation between theoretical predictions and field reality. This study aims to evaluate the technical performance and economic viability of an on-grid 1.82 kWp rooftop PV system in Indonesia. The research employs a comparative quantitative approach by validating PVsyst simulation results against actual measurement data recorded from April to July 2024. The findings indicate a simulation overestimation, where actual energy production was 30.3% to 40.5% lower than PVsyst projections. A significant discrepancy was also observed in the Performance Ratio (PR), with the actual PR reaching only 55-59%, substantially lower than the simulated 81-82%. Despite these technical inconsistencies, the economic analysis confirms the project's financial feasibility. Under a 5.25% interest rate scenario, the study yielded a Net Present Value (NPV) of IDR 15.88 million, a Benefit-Cost Ratio (BCR) of 1.50, a Payback Period of 9.8 years, and a Levelized Cost of Electricity (LCOE) of IDR 974.88/kWh, more competitive than the national utility (PLN) tariffs. In conclusion, although tropical environmental factors such as high temperatures and dust accumulation reduce technical efficiency, rooftop PV investment in Indonesia maintains strong profitability and remains viable for implementation.
Implementasi WSN untuk Peringatan Dini Kebakaran Hutan Berbasis LoRaWAN dan Notifikasi Telegram pratama, legenda; Prasetyo, Dendy; Wilyanti, Sinka; Prameswono Pratama, Legenda; Junesco Vresdian, Devan; Widi Dionova, Brainvendra; Hamzah, Hamzah
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 19 No. 3 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v19n3.2913

Abstract

Kebakaran hutan menjadi ancaman serius di Kabupaten Tegal. Penelitian ini mengembangkan sistem peringatan dini menggunakan Wireless Sensor Network (WSN) yang terintegrasi dengan LoRaWAN dan notifikasi real-time via Telegram. Sistem memakai sensor DHT22 dan MQ-2 yang dikalibrasi untuk mengukur suhu, kelembapan, dan gas. Jika ambang suhu 40°C atau gas 300 ppm terlampaui, buzzer aktif dan notifikasi dikirim. Pengujian menunjukkan sistem stabil dengan delay 397–484 ms, throughput 1,64–3,38 kbps, dan tanpa packet loss. Sistem ini efektif mendeteksi kebakaran lebih awal dan mempercepat respons petugas di lapangan.
Co-Authors ', Padil Abdullah Asuhaimi Mohd Zin Abdulrazaq, Mohammed N. Abrar Tanjung Abrar Tanjung Abrar Tanjung Achmad Nur Aliansyah Agus Bari Saptono Ahmad Kafrawi Nasution Aidil Rahman Ambar Tri Ratna Ningsih Ambar Tri Ratnaningsih Anto Ariyanto Anugrah, Andri Van Arief, Yanuar Z. Arif Ilham Rafi Cahyo Arisa Olivia Putri Arlenny Arlenny Atmam Atmam atmam atmam atmam atmam, atmam Belyamin Belyamin Brainvendra Widi Dionova Darmansyah David Setiawan David Setiawan David Setiawan, David Dwiana Hendrawati Edy Rahmad Septiadi Elvira Zondra, Elvira Erisman Erisman Fariz Maulana Rizanulhaq Feblil Huda Febrizal Ujang Guntoro, Guntoro Hari Asman Hari Putra Hari Hebby Pradatama Sitepu Indra Gunawan Isna Rahma Dini Joel Veryanto Hutagaol Josua Sitompul Junesco Vresdian, Devan Juswandi Kalvin Saputra Latifa Siswati Legenda Prameswono Pratama M. Ridwan Masnur Putra Halilintar Masnur Putra Halilintar Monice Monice Monice Monice Monice Muhammad Idris Muhammad Irsyad Abdullah Muhammad Ridha Fauzi Mutamalikin Mutamalikin Octary, Wellington Olivia Putri, Arisa Oo Abdul Rosyid Padil Panca Putra Prima Hutagalung Prameswono Pratama, Legenda Prasetyo, Dendy Rahman, Arizki Rahmanda, Ibnu Dwi Rifaldi Wahyu Santoso Rina Novia Yanti Rio Alfredo Sinaga Rivo Jefysa Rony, Zahara Tussoleha Santoni, Edi Satoni, Edi Saud, Safa N Siregar, Josua Perjuangan Subarta, Budi Suwitno Syaputra Siregar, Julfadli Usaha Situmeang Wilyanti, Sinka Yanuar Z. Arief Yolnasdi, Yolnasdi