EPSILON: Journal of Electrical Engineering and Information Technology
Focus of EPSILON are electrical engineering and information technology. Scope of EPSILON are Power Engineering, Telecommunication & Information engineering, and Control & Instrument Engineering. Scope of this journal for Power Engineering are Renewable/green energy, Solar energy, micro-hydro energy, wind energy, hydro energy, geothermal energy, energy hybrid system, energy monitoring and management, SCADA, power system, power generation operation and control, power transmission, protection and insulation, metering system, electric transportation system, battery technology, power electronics, electromagnetic and computation for power system, electrical machinery and HV diagnosis. Scope of this journal for Telecommunication & Information are Antenna, broadband communication, circuit and system, electromagnetic, telecommunications management, microwave, radio wave, radar and satellite, wireless communication, RF electronic, Optical communication, multimedia broadcasting, multimedia communication, web programming, computer network, and data communication. Scope of this journal for Control & Instrumentation are automation, PLC/DCS/SCADA system, instrumentation and control system, process control, artificial intelligence, mechatronics, robotics, guidance and flight control, electric vehicle, instrumentation engineering education, smart manufacturing, smart sensor, simulation and optimization, microcontroller application/embedded systems, signal and image processing, electronic and microelectronic, biomedical engineering, software engineering, wireless sensor network, and IoT.
Articles
89 Documents
<![CDATA[The ANALISIS PARAMETER QOS (QUALITY OF SERVICE) PADA JARINGAN WIFI DI GEDUNG FAKULTAS TEKNIK UNIVERSITAS JENDERAL ACHMAD YANI DENGAN MENGGUNAKAN WIRESHARK ]]>
<![CDATA[Tiffany, Nivika]]>;
<![CDATA[Nicko Wahyudi]]>;
<![CDATA[Atik Charisma]]>;
<![CDATA[Hajiar Yuliana]]>;
<![CDATA[Sofyan Basuki]]>;
<![CDATA[Ade Sena Permana]]>
<![CDATA[ EPSILON: Journal of Electrical Engineering and Information Technology Vol 23 No 2 (2025): EPSILON - Journal of Electrical Engineering and Information Technology ]]>
Publisher : <![CDATA[Department of Electrical Engineering, UNJANI ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.55893/e6py7a65
<![CDATA[WiFi performance is a pressing need in academic, especially to support learning, research, and communication. In the digital era, the demand for high network quality is increasing along with the heavy dependence on internet access for various academic activities. Therefore, the evaluation of the WiFi network quality in Jenderal Achmad Yani University is focus of this study, the network meets the required quality standards. This study uses a quantitative method with an observational approach to analyze the Quality of Service (QoS) parameters such as throughput, packet loss, delay, and jitter. The quantitative method was chosen because it is able to provide objective and accurately measured data, while the observational approach allows researchers to directly observe internet traffic and measure QoS parameters. Testing was conducted for three days to obtain representative data on the condition of the WiFi network in the building. From the test results conducted, it is known that the quality of the network in the Faculty of Engineering Achmad Yani University is: Average throughput of 1406.76 Kbps, packet loss of 0%, delay of 70.21 ms, jitter of 85.96 ms. With an average overall index of QoS parameters of 3.25 and included in the Good category according to TIPHON.]]>
<![CDATA[Rancang Bangun Sistem Kendali Presisi Suhu dan Kelembapan pada Mesin Penyangrai Kopi Menggunakan Sensor SHT-31 ]]>
<![CDATA[Muhammad Arfan]]>;
<![CDATA[Warnisa Gulo]]>;
<![CDATA[Muhammad Khairul Amri Rosa]]>;
<![CDATA[Alex Surapati]]>;
<![CDATA[Natsir Habibullah]]>
<![CDATA[ EPSILON: Journal of Electrical Engineering and Information Technology Vol 23 No 2 (2025): EPSILON - Journal of Electrical Engineering and Information Technology ]]>
Publisher : <![CDATA[Department of Electrical Engineering, UNJANI ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.55893/1dnbsx33
<![CDATA[Conventional coffee roasting methods often face challenges regarding quality inconsistency due to a high reliance on operator proficiency and the absence of precise thermal regulation. This study aims to design and build an automatic coffee roasting system based on the Arduino Uno microcontroller integrated with an SHT-31 sensor for real-time monitoring of steam temperature and humidity. The system applies threshold control logic with a setpoint of 90°C temperature and 12% humidity to automate the servo motor actuator on the gas valve. Operational testing was conducted using coffee bean load variations of 50, 100, 150, and 200 grams. The results showed that increasing bean mass was directly proportional to roasting duration, ranging from 12.46 minutes for a 50-gram load (dark roast) to 21.16 minutes for 200 grams (light roast). Sensor reading accuracy was validated with an error value of 2.62% compared to a standard thermometer. The control system proved effective in stabilizing microclimate parameters and terminating the process automatically upon reaching targets, thereby ensuring final product consistency.]]>
<![CDATA[Analisis Efisiensi Sistem SCADA Dalam Monitoring Dan Data Logging Pada Plant Water for Injection (WFI) di Large Volume Parenteral (LVP) PT. Sanbe Farma ]]>
<![CDATA[Najmurrokhman, Asep]]>;
<![CDATA[Bunga Wahyudiani]]>;
<![CDATA[Azmi Hafizat Muzada]]>
<![CDATA[ EPSILON: Journal of Electrical Engineering and Information Technology Vol 23 No 2 (2025): EPSILON - Journal of Electrical Engineering and Information Technology ]]>
Publisher : <![CDATA[Department of Electrical Engineering, UNJANI ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.55893/sxt4s992
<![CDATA[The Supervisory Control and Data Acquisition (SCADA) system is essential in pharmaceutical manufacturing, particularly for ensuring product quality and operational continuity in the Water for Injection (WFI) process at the Large Volume Parenteral (LVP) facility of PT Sanbe Farma. This study evaluates the efficiency and performance of SCADA in monitoring and logging WFI flow rate and conductivity. The assessment involves real-time data observation, historical trend analysis, efficiency measurement, and performance evaluation based on data availability, logging reliability, sampling frequency, event detection, and value consistency. Findings show that SCADA achieved 100% data availability for all monitored parameters, with a performance index consistently above 96%, indicating strong capability for real-time anomaly detection and uninterrupted data recording. Flow-rate monitoring efficiency reached 85% in May 2025 but declined to 70% in June 2025 due to process issues. In contrast, conductivity monitoring in both Cold and Hot loops remained highly efficient, exceeding 99%. Statistical results also revealed a 100% variability index and a high peak-to-average ratio, demonstrating the system’s accuracy in capturing dynamic fluctuations. Overall, the SCADA system in PT Sanbe Farma Unit 3 provides reliable monitoring performance and supports early disturbance detection, making it a strong basis for system maintenance and improvement.]]>
<![CDATA[Prototipe Sistem Sentry Gun Berbasis Raspberry Pi ]]>
<![CDATA[Heri Andrianto Nurman]]>;
<![CDATA[Yohana Susanthi]]>
<![CDATA[ EPSILON: Journal of Electrical Engineering and Information Technology Vol 24 No 1 (2026): EPSILON - Journal of Electrical Engineering and Information Technology ]]>
Publisher : <![CDATA[Department of Electrical Engineering, UNJANI ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.55893/epsilon.v24i1.155
<![CDATA[Sentry gun merupakan senjata dengan sistem bidik otomatis yang secara efisien digunakan dalam sistem keamanan suatu tempat atau daerah. Sentry gun dapat bergerak ke arah kiri, kanan, atas, dan bawah mengikuti pergerakan target yang sedang dibidik. Sistem sentry gun menggunakan deteksi gerakan melalui kamera dalam melakukan tracking. Sistem sentry gun memerlukan library dan single board computer yang mendukung agar mampu mendeteksi gerakan dan menembak sasaran dengan tepat. Pada makalah ini, library OpenCV dan Raspberry Pi digunakan untuk mendeteksi gerakan pada sentry gun dan menembak sasaran. Pelacakan pergerakan pada sistem deteksi gerak diimplementasikan menggunakan algoritma segmentasi latar depan dan latar belakang berbasis model campuran Gaussian (background subtraction). Metodologi penelitian dalam makalah ini terdiri dari empat tahap. Dimulai dengan kajian pustaka tentang sentry gun dari penelitian sebelumnya, dilanjutkan dengan perancangan dan realisasi sistem sentry gun, diakhiri dengan pengujian sistem sentry gun. Berdasarkan hasil pengujian, didapatkan persentase tertinggi tingkat keberhasilan pergerakan sebesar 100%, dan persentase tertinggi jumlah peluru mengenai target terhadap jumlah tembakan sebesar 80%. Sentry gun telah berhasil direalisasikan dan berfungsi dengan baik.]]>
<![CDATA[MediGuard: Telegram-Based Smart Medication Reminder System with Multi-Stage Alert Mechanism and Voice Notification ]]>
<![CDATA[Tsanaiya Zuhura]]>;
<![CDATA[Vania Rapita Augesta]]>;
<![CDATA[Djuniadi Djuniadi]]>;
<![CDATA[Abdurrakhman Hamid Al-Azhari]]>
<![CDATA[ EPSILON: Journal of Electrical Engineering and Information Technology Vol 24 No 1 (2026): EPSILON - Journal of Electrical Engineering and Information Technology ]]>
Publisher : <![CDATA[Department of Electrical Engineering, UNJANI ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.55893/epsilon.v24i1.156
<![CDATA[Medication non-adherence among elderly patients remains a critical healthcare challenge, with 40-60% failing to take prescribed medications at correct times. Existing reminder systems often require proprietary mobile applications, subscription-based IoT platforms, or costly GSM infrastructure, creating barriers to widespread adoption. This paper presents MediGuard, a cost-effective medication reminder system leveraging Telegram Bot API for universal accessibility without custom application requirements. The system employs a dual-microcontroller architecture: ESP32 manages WiFi communication, schedule storage via SPIFFS, and implements a novel four-stage progressive alert mechanism (LED activation, waiting period, blinking pattern, final timeout), while Arduino Nano handles integrated health monitoring through MAX30102 pulse oximeter, DHT11 environmental sensor, and MQ-2 smoke detector. A key innovation is the incorporation of ISD1820 voice module enabling personalized audio reminders superior to conventional buzzer alerts. User interaction occurs entirely through familiar Telegram commands (/add, /list, /clear), eliminating installation barriers. System testing demonstrates <3-second schedule accuracy, 50ms voice trigger latency, and reliable operation over extended periods. This approach achieves significant cost reduction compared to GSM-based solutions while maintaining scalability and user-friendliness suitable for elderly populations.]]>
<![CDATA[Perancangan dan Analisis Kinerja Sistem Gateway IoT Berbasis RS485 Menggunakan ESP32 untuk Monitoring Intensitas Cahaya secara Real-Time ]]>
<![CDATA[Akmal Fauzi Rahman]]>
<![CDATA[ EPSILON: Journal of Electrical Engineering and Information Technology Vol 24 No 1 (2026): EPSILON - Journal of Electrical Engineering and Information Technology ]]>
Publisher : <![CDATA[Department of Electrical Engineering, UNJANI ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.55893/epsilon.v24i1.157
<![CDATA[Perkembangan Internet of Things (IoT) mendorong penerapan sistem monitoring real-time pada berbagai sektor industri. Penelitian ini bertujuan merancang sistem monitoring intensitas cahaya berbasis IoT dengan komunikasi RS485 menggunakan protokol Modbus RTU serta integrasi MQTT. Sistem menggunakan ESP32 sebagai gateway yang menghubungkan sensor BH1750 dengan platform monitoring. Metode meliputi perancangan perangkat keras, pengembangan perangkat lunak berbasis FreeRTOS, dan pengujian dengan interval satu menit. Evaluasi dilakukan menggunakan Mean Absolute Error (MAE), Mean Absolute Percentage Error (MAPE), rata-rata delay, dan Packet Delivery Ratio (PDR). Hasil menunjukkan sistem mampu bekerja secara real-time dengan akurasi yang baik, ditunjukkan oleh nilai MAE dan MAPE yang rendah. Selain itu, rata-rata delay sekitar 120 ms dan nilai PDR 100% menunjukkan komunikasi data berjalan stabil. Sistem ini memenuhi aspek akurasi, responsivitas, dan keandalan, sehingga berpotensi diterapkan pada monitoring industri skala kecil hingga menengah.]]>
<![CDATA[Earthquake Alert: Development of an ESP32-Based Early Warning System Prototype using MPU6050 and SW-420 Sensor ]]>
<![CDATA[Handoko Rusiana Iskandar]]>;
<![CDATA[Reni Ayu Purwaningsih]]>;
<![CDATA[Dimas Alfahrezi]]>;
<![CDATA[Ahmad]]>;
<![CDATA[Dede Furqon Nurjaman]]>
<![CDATA[ EPSILON: Journal of Electrical Engineering and Information Technology Vol 24 No 1 (2026): EPSILON - Journal of Electrical Engineering and Information Technology ]]>
Publisher : <![CDATA[Department of Electrical Engineering, UNJANI ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.55893/epsilon.v24i1.161
<![CDATA[West Bandung Regency, West Java Province, is one of the areas with a significant earthquake risk due to the activity of the Lembang Fault and regional geological conditions. Earthquakes that occur suddenly may cause serious impacts on human safety, infrastructure, and activities in campus environments and public buildings. The limited availability of local, real-time, and easily accessible earthquake early warning systems highlights the need for an effective mitigation technology based on the Internet of Things (IoT). This study aims to design and implement an ESP32-based earthquake early warning system prototype integrated with Telegram notifications. The proposed system employs an MPU6050 sensor to measure vibration acceleration along the X, Y, and Z axes, while an SW-420 sensor is used as an initial vibration detector. The acceleration data are processed using the Root Mean Square (RMS) method and the Short Time Average/Long Time Average (STA/LTA) ratio to classify vibration conditions into four warning levels: safe, alert, warning, and danger. The classification results are displayed through local indicators and transmitted in real time to Node-RED using the MQTT (Message Queuing Telemetry Transport) protocol, then forwarded to users through Telegram notifications. The experimental results show that the system is capable of detecting vibration with a success rate of approximately 95%, a classification accuracy of 92%, and a data transmission delay of less than one second. Therefore, the proposed system has the potential to be implemented as a low-cost, responsive, and easily deployable earthquake early warning solution in earthquake-prone areas.]]>
<![CDATA[BAND PASS FILTER MICROSTRIP PMETODE HAIRPIN PADA FREKUENSI S Band ]]>
<![CDATA[Dina Herdiana]]>;
<![CDATA[MUHAMMAD ALI MUHYIDDIN]]>;
<![CDATA[Muhammad Aji Rahman]]>
<![CDATA[ EPSILON: Journal of Electrical Engineering and Information Technology Vol 24 No 1 (2026): EPSILON - Journal of Electrical Engineering and Information Technology ]]>
Publisher : <![CDATA[Department of Electrical Engineering, UNJANI ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.55893/epsilon.v24i1.162
<![CDATA[Sistem radar adalah teknologi yang menggunakan gelombang elektromagnetik (radio dan gelombang mikro) untuk mendeteksi, menentukan jarak, dan membuat peta objek. Namun, sering kali terdapat gangguan seperti noise dan masuknya sinyal asing ke dalam sistem tersebut. Oleh karena itu, peran filter untuk menyeleksi sinyal yang diterima serta mengurangi noise. Salah satu jenis filter yang dapat diterapkan adalah band pass filter. Pada penelitian ini dilakukan perancangan filter yang akan digunakan untuk sistem radar. Filter yang dirancang adalah band pass filter menggunakan metode microstrip hairpin yang bekerja pada frekuensi S Band, dengan nilai return loss dibawah -10 dB dan nilai insertion loss diatas -10 dB. Pada perancangan ini menggunakan substrat FR-4 dengan r= 4,5 dan ketebalah 1 mm. Desain filter menghasilkan band pass filter microstrip hairpin berhasil bekerja dengan efektif pada rentang frekuensi 2,385 – 2,55 GHz Band pass filter ini dapat digunakan dalam sistem radio komunikasi karena desainnya yang lebih kompak dan kecil. ]]>
<![CDATA[Rancang Bangun Alat Ukur Emisi Gas Buang pada Kendaraan Bermotor Berbasis Mikrokontroler ATMega 328 dengan Pemantauan Secara Real-Time Melalui Bluetooth pada Perangkat Android ]]>
<![CDATA[Ni Hetut HD]]>;
<![CDATA[Muhammad Ali Hambali]]>
<![CDATA[ EPSILON: Journal of Electrical Engineering and Information Technology Vol 24 No 1 (2026): EPSILON - Journal of Electrical Engineering and Information Technology ]]>
Publisher : <![CDATA[Department of Electrical Engineering, UNJANI ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
|
DOI: 10.55893/epsilon.v24i1.167
<![CDATA[Penelitian ini dilatarbelakangi oleh tingginya tingkat polusi udara yang disebabkan oleh emisi gas buang kendaraan bermotor di Indonesia. Pengujian emisi kendaraan bermotor menjadi sangat penting untuk meminimalisir dampak negatif terhadap lingkungan dan kesehatan. Namun, alat uji emisi yang tersedia saat ini memiliki harga yang relatif mahal dan ukuran yang besar, sehingga kurang praktis untuk penggunaan luas. Penelitian ini bertujuan untuk merancang dan mengembangkan alat ukur emisi gas buang kendaraan bermotor berbasis mikrokontroler ATMega 328 yang lebih efisien, terjangkau, dan portabel. Metode yang digunakan melibatkan perancangan dan realisasi sistem menggunakan mikrokontroler ATMega 328 yang dilengkapi dengan sensor gas MQ-7 dan MQ-2 untuk mendeteksi kadar karbon monoksida (CO) dan hidrokarbon (HC). Data yang diperoleh dari sensor dikirim ke perangkat Android secara nirkabel melalui modul Bluetooth HC-05 dan ditampilkan secara real-time. Hasil pengujian menunjukkan bahwa alat yang dirancang mampu mendeteksi emisi CO dan HC dengan akurasi yang tinggi. Akurasi pengukuran HC mencapai 99,45% dan akurasi pengukuran CO mencapai 99,04% dibandingkan dengan alat uji emisi standar. Koefisien variasi (CV) pengukuran CO adalah 1,89%, sementara untuk HC adalah 0,58%, yang menunjukkan tingkat konsistensi yang baik. Alat ini juga berhasil mengirimkan data ke perangkat Android secara real-time dengan delay kurang dari 1 detik, memastikan performa yang stabil dan responsif.]]>
