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Mestro
Published by Universitas 17 Agustus 1945 Cirebon
ISSN : -     EISSN : 26571072     DOI : doi.org/10.47685/mestro
Core Subject : Science, Engineering,
Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering
Mestro merupakan jurnal ilmiah dalam bidang ilmu pengetahuan dan teknologi yang diterbitkan oleh Fakultas Teknik Universitas 17 Agustus 1945 Cirebon, dalam satu tahun terbit dua kali terbitan yaitu bulan Juni dan Desember. Jurnal MESTRO mewadahi artikel hasil penelitian dan telaah ilmiah kritis dengan berbagai disiplin ilmu meliputi: Mechanical Engineering, Electrical Engineering, Civil Engineering, Computer Engineering and Manufacturing Engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 74 Documents
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PENGUJIAN MESIN PERONTOK PADI BERBASIS MOTOR BENSIN permana, aji
Mestro: Jurnal Teknik Mesin dan Elektro Vol 6 No 03 (2024): Edisi Desember
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v6i03.568

Abstract

Kehilangan banyak gabah banyak terjadi pada proses penanganan pascapanen padi. Proses perontokan merupakan bagian dari pascapanen padi yang dapat dilakukan dengan berbagai teknik . Masih banyak petani di Indonesia menggunakan cara manual untuk merontontokkan padi. Untuk menghasilkan gabah yang maksimal, maka dalam penelitian ini melakukan dan berbagai jenis mesin perontok padi. Alat perontok multiguna termasuk salah satu jenis perontok yang dapat merontokkan biji-bijian seperti padi dan kedelai. Pengujian efisiensi kinerja alat perontok multiguna bertujuan untuk mengetahui efisiensi kinerja alat perontok. Parameter yang diukur adalah kapasitas perontokan, efisiensi perontokan, dan kualitas perontokan. Pengujian tersebut dilakukan dengan menggunakan kecepatan putaran mesin 1000 rpm dan 1500 rpm, dengan varietas padi yang diuji yaitu varietas Ciherang. Hasil pengujian menunjukkan bahwa efisiensi perontokan varietas Ciherang lebih baik jika menggunakan kecepatan putaran mesin 1000 rpm. Jika menggunakan kecepatan putaran mesin 1500 rpm terjadi susut hasil.
Comparative Analysis of DOL Starting Method with VFD on 630 kW/3 kV SWRO PUMP Induction Motor Safrizal, Safrizal
Mestro: Jurnal Teknik Mesin dan Elektro Vol 6 No 03 (2024): Edisi Desember
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v6i03.587

Abstract

Operational starting current of an induction motor can reach 5-7 times the nominal current (FLA) in steady state conditions. This is due to the small impedance and high Locked Rotor Current (LRC). During starting, the terminal voltage experiences a voltage drop with a duration of 0.5 cycles to 1 minute, known as voltage dip or voltage sag. High current will generate heat that can damage the motor itself, cause voltage drop in an electrical power system, and if the voltage drop exceeds the allowed tolerance, it can disrupt other systems. To determine the starting current of a 630 kW/3 kV induction motor, a simulation can be performed using the ETAP Power Station software. From the simulation results, the starting motor SWRO Pump using the DOL method had a current surge of 440% (4.4 times) of the FLA (Full Load Ampere) 726 A, resulting in a voltage drop of 6%, while the VFD (Variable Frequency Drive) method had a current surge of 110% of the FLA (Full Load Ampere) 181.5 A with a voltage drop of 0.2%. Both methods experienced similar voltage drops within the acceptable limit (<20%), but had different current surges. The research concluded that VFD is safer because high starting current can cause interference with other equipment and affect the life of the motor's windings. The choice of starting method should be appropriate for the specific application.
Railway Bogie Side Frame Strength Analysis Achdi, Endang; Rizayana, Farid; Septian, Reza Nur
Mestro: Jurnal Teknik Mesin dan Elektro Vol 6 No 03 (2024): Edisi Desember
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v6i03.588

Abstract

Train is one of the transportations which highly in great demand of people around the world, particularly in Indonesia. The train is expected to be one of the solutions to solve transportation’s problems in Indonesia. Train should fulfill the existing regulation one of them is the structural strengths in resisting static loads that is the loads that can’t change over time, In order to ensure the passengers safety and comfort. The analysis of the train bogie frame begins with gathering the information regarding the model, specification, and formulation of various loading cases, and finite element modeling. The result shows that in the bogie frame, the maximum stress that occurs is 20.5 MPa for the static load category with axial direction. This occurs below the permissible stress of 183.75 MPa. It can be concluded that the stress works below the permitted stress by the material SS400. Therefore, the operation of bogie with static load is in a safe condition.
Alat Deteksi Posisi Siswa SMA/SMK Di Lingkungan Sekolah Menggunakan Perangkat Sensor NRF24L01 dan NodeMcu noer, zeni muhamad
Mestro: Jurnal Teknik Mesin dan Elektro Vol 6 No 03 (2024): Edisi Desember
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v6i03.589

Abstract

Di zaman teknologi yang semakin cepat pertumbuhannya sekarang ini, kita dituntut untuk bisa memanfaatkan teknologi tersebut didalam melaksanakan segala jenis pekerjaan dan kebutuhan. Pendeteksian suatu obyek ataupun keberadaan manusia saat ini diperlukan untuk mengetahui keberadaan seseorang agar terciptanya keamanan bagi manusia.Sistem pendeteksian manusia yang terintegrasi akan sangat berguna bagi kehidupan sehari-hari dalam berbagai bidang. Sekolah akan bisa memantau dan mengetahui posisi siswa melalui alat tersebut sehingga dengan mudah akan terpantu jelas melalui sistem tersebut. Alat ini akan terus memancarkan sinyal (transmitter) kepada alat penerima sinyal (reciever) yang nantinya sinyal tersebut akan di konversi menjadi teks yang dikirimkan kedalam Database sebagai input data.Alat deteksi ini menggunakan perangkat dan sensor NRF24L01 dan NodeMCU sebagai transmitter dan sebagai receiver yang dihubungkan kedalam Database siswa. Perangkat transmitter akan terus menempel di tubuh siswa sehingga akan terus mengirimkan sinyal. Pengiriman sinyal dari sensor menggunakan jaringan wifi sebagai bridge (jembatan) antara perangkat transmitter dan perangkat reciever sehingga terhubung dengan Database siswa. Alat ini membutuhkan tegangan sebesar 3,3 Volt sehingga tidak membahayakan bagi para siswa. Alat ini tidak membutuhkan biaya yang besar sehingga bisa meringankan pihak sekolah untuk menyediakan alat ini dan dapat memberikan informasi bagi sekolah dan orang tua akan keberadaan siswanya. Kata kunci: NodeMcu, NRF24L01, sensor.
Rancang Bangun Programmable Logic Controller ( P L C ) Menggunakan Mikrokontroler Pic16f877 Sebagai Media Pembelajaran Subiyanta, Erfan; Ibnu Analis, Faizul Wafa
Mestro: Jurnal Teknik Mesin dan Elektro Vol 7 No 1 (2025): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v7i1.30

Abstract

Programable logic control (PLC) is a versatile microprocessor control designed to meet practical demands in industry such as in the automatic field. In the automatic field serves as a substitute for an electro mechanical system that is to replace a series of series of relays found in conventional process control systems. Therefore, in this thesis, a research on Design (PLC) Programable Logic Controller Based on PIC16F877 Microcontroller as Learning Media has been conducted.This Micro PLC consists of a minimum system PIC16F877 microcontroller circuit. Micro PLC testing only takes a few sample cases such as I / O (input output) testing of logic gates, counter testing and timer testing. How to upload a ladder diagram to a micro PLC via a computer using the K150 programmer and Microbrn software to upload the program to a micro PLC so that the input and output modules can work according to the ladder diagram programming that has been made. From the results of micro PLC testing can be used as a PLC learning media.
Analysis of Excess Energy Production in Hybrid Vertical Axis Wind Turbine-Solar Cell di Jalan Tol Sayung Demak Kurniawan, Nanang Candra
Mestro: Jurnal Teknik Mesin dan Elektro Vol 6 No 03 (2024): Edisi Desember
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v6i03.655

Abstract

This study analyzes the excess production of electrical energy from a hybrid system combining a 500W vertical axis wind turbine and 2 x 250W solar panels implemented on the Demak-Semarang Toll Road. The system is designed to meet the electricity needs of toll road infrastructure, particularly for lighting and traffic monitoring. Wind speed and solar radiation data were collected using NASA's LARD (Langley Atmospheric Research Data) from January to December 2023. The calculation method used involves linear interpolation on the wind turbine power curve and the calculation of solar panel output power based on panel area and hourly solar radiation. The analysis results show that the hybrid system generates a total energy of 2662.93 Wh per day, while the lighting load requires 1680 Wh per day. Thus, there is an excess energy production of 982.93 Wh per day. This surplus energy can be stored in a 24V 90Ah LiFePO4 battery for use during periods of low energy production or at night. The excess energy production varies each month, with the highest peak occurring in February (46.296 kWh) and the lowest in April (15.793 kWh). This hybrid system not only improves the reliability of the energy supply but also reduces dependence on conventional grid electricity. The study demonstrates that the hybrid system of vertical axis wind turbines and solar panels is an effective and sustainable solution for meeting energy needs in transportation infrastructure, particularly on toll roads. The results of this study are expected to serve as a reference for further development in the implementation of renewable energy in the transportation sector.
Analysis of the Effectiveness of E-Learning in Enhancing English Comprehension Among Electrical Engineering Students: A Case Study in Cirebon" Eliyawati, Eliyawati; Kurniawan, Zuki; Indriyani, Devia; Rosadah, Ros Awaliyah
Mestro: Jurnal Teknik Mesin dan Elektro Vol 7 No 1 (2025): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v7i1.656

Abstract

This study aims to analyses the effectiveness of e-learning in enhancing the English comprehension of Electrical Engineering students in Cirebon. The research employs a quantitative method with a journal review approach to identify trends and the effectiveness of e-learning in English learning for engineering students. The findings indicate that e-learning significantly contributes to students' comprehension improvement, particularly in reading and listening skills. Students who actively use e-learning show a 30% increase in English comprehension scores compared to those who rely solely on conventional learning methods. A total of 75% of students reported that e-learning helped them better understand technical materials in English. However, challenges remain in student interaction and learning motivation, especially in speaking and writing skills. The conclusion of this study suggests that e-learning can be an effective learning medium with proper implementation strategies, including enhancing digital interaction and developing more engaging methods for students. REFERENCES Clark, R. C., & Mayer, R. E. (2016). E-Learning and the Science of Instruction: Proven Guidelines for Consumers and Designers of Multimedia Learning. John Wiley & Sons. Horton, W. (2006). E-learning by design. Pfeiffer Gok, T. (2016). The Effects of Social Networking Sites on Students’ Studying and Habits. International Journal of Research in Education and Science, 2(1), 85–93. Liaw, S. S., Huang, H. M., & Chen, G. D. (2007). Surveying instructor and learner attitudes toward e-learning. Computers & Education, 49(4), 1066-1080. https://doi.org/10.1016/j.compedu.2006.01.001 Rosenberg, M. J. (2001). E-learning: Strategies for delivering knowledge in the digital age. McGraw-Hill. Sun, P. C., Tsai, R. J., Finger, G., Chen, Y. Y., & Yeh, D. (2008). What drives a successful e-Learning? An empirical investigation of the critical factors influencing learner satisfaction. Computers & Education, 50(4), 1183-1202. https://doi.org/10.1016/j.compedu.2006.11.007 Universitas X. (2023). Laporan Survei Pemahaman Bahasa Inggris Mahasiswa Teknik Elektro. Penerbit Universitas X. Zhang, D., Zhou, L., Briggs, R. O., & Nunamaker, J. F. (2006) Instructional Video in E-Learning: Assessing the Impact of Interactive Video on Learning Effectiveness. Information & Management, 43(1), 15–27. Wu, J. H., Tennyson, R. D., & Hsia, T. L. (2015). A study of student satisfaction in a blended e-learning system environment. Computers & Education, 55(1), 155-164. Wu, W. H., Wu, Y. C. J., Chen, C. Y., Kao, H. Y., Lin, C. H., & Huang, S. H. (2015). Review of trends from mobile learning studies: A meta-analysis. Computers & Education, 59(2), 817–827. https://doi.org/10.1016/j.compedu.2012.03.016
A Mobile Sign Language Dictionary: Enhancing Communication for the Deaf and Mute Rakhmadi, Aris; Wulandari, Novita Desi; Rosad, Safiq; Syukri, Muhammad
Mestro: Jurnal Teknik Mesin dan Elektro Vol 7 No 1 (2025): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v7i1.617

Abstract

Communication is fundamental to human interaction, yet individuals who are deaf or speech-impaired often face barriers due to limited accessibility to sign language resources. This study presents the development of a mobile sign language dictionary designed to enhance communication and learning. Traditional sign language dictionaries, whether in printed or video formats, present challenges in accessibility, usability, and portability. In contrast, a mobile application offers an interactive, efficient, and user-friendly solution. The proposed application integrates gesture recognition, video demonstrations, and text-based explanations to facilitate sign language learning. By leveraging artificial intelligence (AI) and cloud-based storage, the app ensures accurate sign recognition and provides a comprehensive database of gestures, including letters, numbers, root words, prefixes, suffixes, and commonly used phrases. A structured methodology involving requirement analysis, data collection, design, development, testing, and revision was applied to develop a functional and accessible tool. User testing demonstrated high engagement and learning effectiveness, with 85% of participants reporting increased comfort with mobile learning tools, 82.5% finding the app beneficial for sign language acquisition, and 90% improving their familiarity with sign words. These results confirm that a mobile sign language dictionary is an efficient educational tool that fosters inclusivity and communication accessibility. Future enhancements, including database expansion, additional sign language dialects, and interactive exercises, can further improve the application’s impact.
Interactive Motion-Sensing Game for Improving Physical Education in Students with Intellectual Disabilities Rakhmadi, Aris; Puspitasari, Yuliana; Yasin, Fatah; Sulistyo Nugroho, Yusuf; Fadlillah, Umi
Mestro: Jurnal Teknik Mesin dan Elektro Vol 7 No 1 (2025): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v7i1.637

Abstract

Students with intellectual disabilities often face challenges in physical education due to limited motor coordination, reduced engagement, and difficulties following traditional instructional methods. To address this, motion-sensing technology, particularly Kinect-based educational games, presents a promising solution by offering interactive and gamified learning experiences. This study explores the development and implementation of a Kinect-based educational game designed to enhance motor skills and engagement in students with intellectual disabilities. The game focuses on throwing exercises, providing real-time feedback through visual and auditory cues to reinforce learning. The study was conducted at SLB-C YPSLB Surakarta, involving 20 students with intellectual disabilities and five special education teachers. A pre-test and post-test evaluation was used to assess students' motor skill improvement and engagement levels before and after using the game. The results demonstrated a 26.3% increase in throwing accuracy, a 26.9% rise in engagement levels, and a significant reduction in reaction time, indicating the game's effectiveness in enhancing physical coordination and participation. Teacher feedback highlighted the game's usability, ability to maintain student focus, and alignment with PE learning objectives. Although the findings showed positive learning outcomes, several challenges, such as the initial adaptation period and the need for a wider variety of games, were identified. Future research should focus on customizing difficulty levels, varying physical activities, and AI-powered adaptive learning to meet the needs of individual students. This study highlights the potential of motion-sensing educational games as an effective tool for inclusive and engaging physical education for students with intellectual disabilities.
Testing of the Condenser in the Distillation of Lemon Grass Essential Oil in Banjarnegara, Central Java Tohasan, Achmad; Prihastuty, Endang; Khilmi, Muhammad; Saleh, Abdurrahman
Mestro: Jurnal Teknik Mesin dan Elektro Vol 7 No 1 (2025): Edisi Juni
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v7i1.664

Abstract

Essential oil of lemongrass has a high economic value as a raw material for the perfume, cosmetics, and aromatherapy industries. The efficiency of the steam distillation process greatly depends on the performance of the condenser in converting the vapor of essential oil into a liquid phase. To determine the effectiveness value of the condenser in the essential oil distillation system that affects the yield of the produced oil, a condenser test was conducted in the essential oil distillation system located in Banjarnegara, Central Java. From the test results, this research aims to analyze the influence of the condenser design and operational parameters on the yield and quality of lemongrass essential oil. The effectiveness measurement of the condenser located in Kilang 1, Banjarnegara, Central Java, with a boiler capacity of 1 ton and a tube length of 36 meters, resulted in an effectiveness of 67%. In the distillation process with a capacity of 1 ton and a tube length of 36 meters, essential oil was obtained amounting to 7 kg, with a yield of 7%. Meanwhile, in measuring the effectiveness of the condenser located at the 2nd refinery in Banjarnegara, Central Java, with a kettle capacity of 1 ton and a tube length of 56 meters, an effectiveness of 78% was achieved. In the distillation process with a capacity of 1 ton and a tube length of 56 meters, essential oil amounting to 10 kg was also obtained, with a yield of 1%. Keywords: Condenser, Essential oil, Effectiveness value, and Yield.

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