Journal of Electrical Engineering and Computer (JEECOM)
Journal of Electrical Engineering and Computer (JEECOM) is published by Engineering Faculty of Nurul Jadid University, Probolinggo, East Java, Indonesia. This journal encompasses research articles, original research report, : 1) Power Systems, 2) Signal, System, and Electronics, 3) Communication Systems, 4) Information Technology, etc.
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<![CDATA[Monitoring Design on PV and Battery PLTS for Power Regulation on Water Pump ]]>
<![CDATA[Sukamta, Sri -]]>;
<![CDATA[Arief, Ulfah Mediaty]]>
<![CDATA[ Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Nurul Jadid ]]>
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DOI: 10.33650/jeecom.v7i2.11594
<![CDATA[The increasing use of solar energy as a source of electrical energy encourages the use of remote monitoring systems to determine the performance of solar panels. The purpose of this study is to conduct a monitoring system for solar panel (PV) and battery output for water pump loads. The method used is to design a monitoring system using the microcontroller NodeMCU ESP8266 and sensor INA219. The first step is to determine the capacity of the PV, battery, and water pump. Then do microcontroller programming and field testing. The INA219 sensor measures the operating voltage and current in real time, the voltage, power, and current of the PV connected to the circuit. Experimental investigations that have been carried out to verify the effectiveness of the proposed monitoring system have shown that proper examination of the collected data allows the monitoring system to be enlarged. The monitoring system is able to perform measurements well for 3 months. The results of monitoring measurements in this study are also influenced by the intensity of solar radiation.]]>
<![CDATA[Sentiment Analysis of User Reviews on the NU Online Application Using the Long Short-Term Memory (LSTM) Model ]]>
<![CDATA[Muthmainnah, Atik]]>;
<![CDATA[Sya'roni, Wahab]]>;
<![CDATA[Pawening, Ratri Enggar]]>
<![CDATA[ Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Nurul Jadid ]]>
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DOI: 10.33650/jeecom.v7i2.12137
<![CDATA[This study aims to analyze user sentiment toward the NU Online application by applying a Long Short-Term Memory (LSTM) model. The research was based on 13,576 user reviews collected from the Google Play Store, which underwent preprocessing, sentiment labeling, and Exploratory Data Analysis (EDA). To ensure balanced classification, undersampling was used, resulting in 6,612 reviews equally divided into positive and negative classes. The text data was processed using tokenization and padding before being input into the LSTM model. Model training involved the use of binary crossentropy, Adam optimizer, EarlyStopping, and ReduceLROnPlateau techniques. The model achieved 93% precision, recall, and F1-score, with low error rates and strong generalization ability. EDA results showed that positive feedback mainly focused on worship features like salat schedules, while negative reviews addressed technical issues such as the azan sound. User review peaks occurred during religious periods and major updates. A Gradio-based web interface was also developed to display results and enable user-friendly access to visual sentiment insights. This implementation proves the practical potential of integrating LSTM with an interactive platform for effective sentiment analysis]]>
<![CDATA[Automatic Safe Security System Using Pin Code And Fingerprint Based On Microcontroller With Telegram Notification ]]>
<![CDATA[Chanifudin, Achmad Yahya]]>;
<![CDATA[Ayuni, Shazana Dhiya]]>;
<![CDATA[Falah, Agus Hayatal]]>;
<![CDATA[Sulistiyowati, Indah]]>
<![CDATA[ Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Nurul Jadid ]]>
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DOI: 10.33650/jeecom.v7i2.11972
<![CDATA[The primary purpose of a security system is to protect valuable and important items. A safe is a medium for storing valuables, adjusted to the size of the safe compartment. Therefore, a proper security system is needed to ensure the owner does not worry about the loss or theft of the contents. This security system is adapted to the current era of advanced and modern technology. The sensors and microcontroller used include the NodeMCU ESP8266, fingerprint sensor, keypad, and LED indicator lights. Telegram notifications or alerts via the application can be received through an internet connection. This security system is implemented to secure the safe and can be accessed via an Android smartphone with the Telegram app installed. It enables the owner to receive access notifications indicating whether an attempt was successful or failed. This research was conducted using an experimental method by building a device to enhance the safety of the safe, providing peace of mind about the stored items. The experiment was carried out at a residence located in Bendosari Village, Ngantru District, Tulungagung Regency. Based on the results, it can be concluded that the development of an automatic safe using a pin code and fingerprint based on a microcontroller with Telegram notifications has successfully met the research objectives. All sensors and components within the safe function properly, ensuring the protection of valuables inside and offering peace of mind to the owner.]]>
<![CDATA[Utilization of a Pressure Sensor as a Pressure Regulator in an Autoclave Machine for Medical Equipment Sterilization and IoT-Based Monitoring ]]>
<![CDATA[Saickoni, Mohammad]]>;
<![CDATA[Falah, Agus Hayatal]]>;
<![CDATA[Anshory, Izza]]>;
<![CDATA[Wisaksono, Arief]]>
<![CDATA[ Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Nurul Jadid ]]>
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DOI: 10.33650/jeecom.v7i2.12222
<![CDATA[An autoclave is a sterilization device that operates using high-pressure steam to eliminate microorganisms. However, in conventional systems, pressure regulation is still performed manually, which can lead to inconsistencies in the sterilization process and reduced effectiveness. This study developed an automatic pressure control system based on a digital pressure sensor, controlled by an Arduino Uno microcontroller and equipped with an ESP8266 module for real-time monitoring via the Internet of Things (IoT). The system also utilizes a MAX6675 temperature sensor, a solenoid valve as a pressure actuator, and an LCD as a local interface. Testing was conducted at three pressure settings (10, 15, and 25 psi) for a duration of 15 minutes. The results showed that the system was able to maintain pressure with a fluctuation tolerance of ±0.3 psi and successfully transmitted temperature and pressure data to a cloud dashboard in real-time. This system is considered effective in improving the efficiency, accuracy, and safety of the sterilization process, and has the potential to be implemented in medical and laboratory facilities.]]>
<![CDATA[Android-Based Monitoring of 110 Volt DC System in Substations within PLN UIT JBM Region to Improve Maintenance Efficiency ]]>
<![CDATA[Dhaniswara, Erwin]]>;
<![CDATA[Nurholis, Nurholis]]>;
<![CDATA[Tamaji, Tamaji]]>
<![CDATA[ Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Nurul Jadid ]]>
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DOI: 10.33650/jeecom.v7i2.12674
<![CDATA[The DC 110 Volt system is a critical component in substations, serving to support the operation of control and protection devices. Instability in voltage or current within this system can result in serious failures in overall substation performance. Therefore, “Monitoring of the DC 110 Volt System in Substations within PLN UIT JBM Region Based on Android to Improve Maintenance Efficiency” in real time becomes crucial. This research aims to design and implement an Android-based monitoring system supported by Internet of Things (IoT) technology using the Blynk application. The main parameters monitored in the DC system are total DC voltage (positive and negative) within a range of 80–125 VDC and current within a range of 0–100 A, integrated with a microcontroller that transmits data to the Android application via data communication protocols. The data received by the application can be analyzed in real time, providing critical information regarding parameter deviations from operational standards. In addition, the system is equipped with an early warning feature that enables technicians to respond to potential disturbances before they affect substation operations. Based on sampling inspections of the DC system conducted by five personnel at five substations within the PLN UIT JBM region, the results show that using the DC monitoring system is more effective than manual measurements, with a time difference of 10–15 minutes. This demonstrates that the system can improve monitoring efficiency and reduce operational risks in substations. With the application of this technology, disturbances in the DC system can be detected earlier, allowing preventive actions to be carried out quickly and accurately.]]>
<![CDATA[Designing a Solar Power Plant Emergency Box for Rapid Disaster Response in Bucor Wetan Village ]]>
<![CDATA[Sulistiyanto, Sulistiyanto]]>;
<![CDATA[IsroAfifi, Muhammad Jesen]]>;
<![CDATA[AlBasyi, Ahmad Fulqin]]>
<![CDATA[ Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Nurul Jadid ]]>
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DOI: 10.33650/jeecom.v7i2.12682
<![CDATA[The growing pursuit of sustainable agricultural development has driven efforts to combine renewable energy systems with Internet of Things (IoT) technology to improve efficiency and productivity in farming operations. This research focuses on the design and realization of a smart farming system powered primarily by solar energy. IoT-based sensing devices are integrated to continuously monitor parameters such as soil moisture, ambient temperature, and humidity, enabling automated irrigation management that conserves both water and energy resources. The photovoltaic (PV) module supplies stable electrical power, while collected data are transmitted to a cloud platform for remote access through a mobile interface. Experimental evaluation indicates that the proposed system decreases energy usage by approximately 35%, improves irrigation precision by 28%, and boosts crop yield by 20%. These outcomes demonstrate that the synergy between solar power and IoT technology plays a vital role in achieving sustainable agricultural systems and advancing the global objectives of energy transition and climate change mitigation.]]>
<![CDATA[Implementation of Smart Onion Counting and Environmental Sensing System with ESP32 MCU ]]>
<![CDATA[Suheta, Titiek]]>;
<![CDATA[Suryowinoto, Andy]]>;
<![CDATA[Uman, Novian Patria]]>;
<![CDATA[Anam, Choirul]]>
<![CDATA[ Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Nurul Jadid ]]>
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DOI: 10.33650/jeecom.v7i2.13020
<![CDATA[The rapid development of embedded system technology in recent decades has had a significant impact, this advancement has contributed to an increase in production capacity with real-time monitoring trough embedded system MCU ESP32. The process of manufacturing onion products, such as fried shallots and garlic. The objective of this research is to develop a low-cost automatic onion counting system that utilizes an embedded system MCU ESP32 with integration of infrared sensors, temperature and humidity sensors to monitor production quality conditions in real-time for small scale Industry. Using the engineering design method, where the TCRT5000 sensor is employed to detect objects based on infrared light interruption, and environmental conditions are measured with the DHT22 sensor to maintain production quality. The internet connection for wireless communication for transmitting data to a mobile device through google firebase. Analysis was performed to evaluate performance such as, data transmission response time, and environmental sensor precision. The results obtained demonstrate that the system attained counting accuracy rates of 98.2% for garlic and 98.55% for shallots. with average data transmission response times of 1.51 seconds and 1.89 seconds, respectively, achieving a success rate of 97.15%. The environmental monitoring sensors demonstrated a high degree of accuracy, with a margin of error of 0.18 °C for temperature and 0.3% for humidity. The results show that this system works effectively in automating onion counting and monitoring, with an accuracy rate of over 98% and a response time of less than 2 seconds, making it suitable for small-scale automated production.]]>
<![CDATA[Fleet Management Information System Design PT. Bagus Amelia Jaya Uses the User Method Web-Based Centered Design ]]>
<![CDATA[Lubis, Bagus Rizki]]>;
<![CDATA[Suendri, Suendri]]>
<![CDATA[ Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Nurul Jadid ]]>
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DOI: 10.33650/jeecom.v7i2.13084
<![CDATA[This study discusses the design of a Fleet Management Information System at PT. Bagus Amelia Jaya using a User Centered Design (UCD) approach and developed as a web-based application with the Laravel framework. The company's main problems include manual recording, the lack of a structured fleet maintenance schedule, limited visibility of fleet and driver data, and minimal support for operational decision-making. The methodology used combines Research & Development (R&D) with the UCD cycle: understanding the context of use, determining user needs, generating design solutions, and conducting iterative evaluations through usability testing. The research results are a system design that provides fleet data modules, service schedules, operational expenses, role-based user management, and structured reporting. The UCD approach ensures the interface design is aligned with the company's workflow and reduces the learning curve for internal users. This research is expected to fill the gap in previous research that predominantly focuses on technical aspects without comprehensive user involvement.]]>
<![CDATA[Design and Evaluation of a Web-Based Geographic Information System for PPDB Promotion Zoning Based on Student-Origin Distributions ]]>
<![CDATA[Suri, Riko Muhammad]]>
<![CDATA[ Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Nurul Jadid ]]>
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DOI: 10.33650/jeecom.v7i2.12706
<![CDATA[Advances in information technology have accelerated the digitalization of educational services, including Indonesia’s student admission process (PPDB). This study designs and evaluates a web-based Geographic Information System (GIS) to map student-origin distributions and construct promotion zones that guide PPDB outreach strategies. The system was built with CodeIgniter and Leaflet for interactive mapping, while applicant addresses/school origins were processed via geocoding. Outputs include point maps, density heatmaps, administrative-area aggregation (urban village/sub-district), and simple distance buffers (e.g., 1–3 km) to derive rule-based priority promotion zones (thresholds on density and proximity to the school). Evaluation comprised functional testing (black box) and user assessments using questionnaires (Likert/SUS). Results indicate that the system expedites registration, reduces the risk of data loss, simplifies data summarization, and provides promotion-zoning maps that help committees target outreach more effectively. The contributions are: (1) a PPDB web-GIS model that combines origin mapping with rule-based promotion zoning, (2) a replicable operational workflow, and (3) recommendations for future work, including advanced analytics dashboards and automated notifications]]>
<![CDATA[Prototype of Automatic Plant Watering Control Based on Internet of Things Using Blynk App ]]>
<![CDATA[Permatasari, Delila]]>;
<![CDATA[Kusuma, Erlillah Rizqi]]>;
<![CDATA[Asti, Irfin Sandra]]>
<![CDATA[ Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025) ]]>
Publisher : <![CDATA[Universitas Nurul Jadid ]]>
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DOI: 10.33650/jeecom.v7i2.12694
<![CDATA[Ornamental plants can grow both indoors and outdoors and can also be used for room decoration. Problems arise when plants don't get the water they need, resulting in insufficient or excessive watering, which can lead to poor growth. Therefore, the purpose of this research is to create a prototype automatic plant watering system to meet plant water needs. An automatic plant watering control system uses an on-off solenoid valve. This automatic plant watering system utilizes a monitoring method that can be remotely monitored using the Blynk IoT (Internet of Things) application in real time to determine soil moisture levels and indicators.Test results showed an average error value for ultrasonic sensor measurements of 0.65%. In soil moisture testing, the soil was dry at less than 38% humidity, damp at 38%-65% humidity, and wet at more than 65% humidity. The test results showed that the DC motor pump output will operate to flow water to the water storage tank if the ultrasonic sensor in the water tank measures the water level below the set point of 10 cm. The solenoid valve will be activated to flow water for the plant watering process if the soil moisture sensor detects a soil moisture value of less than 38%, then the solenoid will be activated until the soil moisture indicator value reaches 65%.]]>
