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INDONESIA
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering)
Published by Universitas Negeri Surabaya
ISSN : -     EISSN : 26142589     DOI : 10.26740/inajeee
Core Subject : Science, Engineering,
Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
INAJEEE or Indonesian Journal of Electrical and Eletronics Engineering (E-ISSN 2614-2589) is a scientific peer-reviewed journal issued by The Department of Electronics, Faculty of Engineering, Universitas Negeri Surabaya (UNESA). Accepted articles will be published online and the article can be downloaded for free (free of charge). INAJEEE is published periodically (2 issues per volume/year) with 5 articles each time published (10 articles per year). INAJEEE is free (open source) all to access and download. The journal includes developments and research in the field of Electronic Engineering, both theoretical studies, experiments, and applications, including: 1. Electronics Engineering 2. Power system Engineering 3. Telematics 4. Control System Engineering
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 8 Documents
 1 
Search results for , issue "Vol. 8 No. 1 (2025)" : 8 Documents clear
Body Balancing Control System for Quadruped Robot While Walking on Uphill and Downhill Road Using Fuzzy Bayu, Ikrof; Zuhrie, M. Syarieffuddien
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 8 No. 1 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v8n1.p9-16

Abstract

The development of robotics in Indonesia is growing rapidly, especially in the field of robotic legs. In the Indonesian SAR robot competition there is an obstacle that is a sloping road that consists of a uphill road and downhill road. The problem with quardruped robots is the use of walking gaits that can only be used on flat fields, so they can not be used directly on sloping roads. The researchers designed a quardruped robot body balance control system using the fuzzy logic method, STM32F4 Discovery and Arduino nano as its controllers, the BNO055 IMU module as its sensor and the Dynamixel MX-28 servo for its legs. The result of this study was that the robot's time to reach a balanced body was a maximum of 1.18 seconds on a uphill road, with an equal error presentation of 2.5% roll angle and 0.95 seconds on the downhill road conditions, with a equal errors presentation of 2.2%. The test result of the high fit of the designed robot leg yielded an average error of 0.02 cm in front leg height on the uphill road, 0.02 in rear foot height when on the downhill road.
Design of Watering and Ambient Temperature Control of Pakcoy Aeroponic Plants with IoT-Based Telegram Notification Kurniawan Yulianto, Muhammad; Suprianto, Bambang
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 8 No. 1 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v8n1.p1-8

Abstract

Plant cultivation with hydroponic techniques involves using water or nutrient-rich solutions without soil, focusing on meeting plants' nutritional needs efficiently. Among various hydroponic methods, aeroponics stands out by growing plants in air and providing nutrients via water mist. This method minimizes resource use and enhances plant growth. This research aimed to develop an IoT-based control system for watering and temperature management of pakcoy aeroponic plants, with real-time monitoring via Telegram notifications. The system uses an ESP32 microcontroller to manage watering schedules through an NTP server and regulate temperature with a DS18B20 sensor and a DC fan. The integration of IoT allows farmers to monitor and control the system remotely. Results demonstrated the system's effectiveness in maintaining optimal conditions for pakcoy growth, ensuring efficient resource use, and providing reliable notifications. The proposed system offers a practical solution for optimizing aeroponic cultivation, potentially enhancing productivity and resource management for urban agriculture
Long-Term Prediction of Leakage Current in Lightning Arrester Using Linear Programming Method Hardiansyah, Rendy; Wrahatnolo, Tri
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 8 No. 1 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v8n1.p17-24

Abstract

Lightning arrester is an essential part of an electrical system in a substation that functions to protect against overvoltages caused by lightning strikes and switching processes. The problem that arises with lightning arresters is the leakage current that flows. Leakage current increases over time, influenced by environmental temperature and the applied voltage. In this research, the researchers predicted the leakage current in lightning arresters for early prevention and to assess the feasibility of the lightning arresters. The method used is linear programming, where the parameter used is the corrective resistive leakage current. Data analysis was performed using the least squares model by formulating the least squares problem as a linear programming problem. After prediction, in some years, the predicted results closely matched the actual data, resulting in very good outcomes. However, there were some years where the predicted data and actual data showed significant differences. The actual data showed significant fluctuations with several peaks and sharp declines. The predicted data showed a more stable and consistent increasing trend from 2024 to 2030. Then, the predicted data and actual data were compared to determine performance accuracy. The result obtained was a Mean Absolute Percentage Error (MAPE) of 21.7%, which falls into the category of sufficient performance for prediction. The results of the leakage current prediction until 2030 for all lightning arresters are still below the maximum limit, except for the Bay Rungkut 2 phase S, which is 300.9 ?A, indicating that replacement is necessary according to the standards in the SKDIR 0520-2.K/DIR/2014 maintenance guidelines for lightning arresters by PT. PLN (Persero).
Solar Thermoelectric Generator Prototype with Flat Black Color Coating on Copper Plate Heat Absorber Purnama Putra, Fari Abid; Suprianto, Bambang
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 8 No. 1 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v8n1.p25-31

Abstract

Solar Thermoelectric Generators (STEGs) present a promising avenue for renewable energy production by converting solar heat into electricity. This study investigated the impact of a black coating on a copper heat absorber plate on STEG performance. A prototype incorporating eight TEG SP 1848-27145 SA modules connected in series was constructed for this experimental study. Copper plate temperature, voltage, and current were measured and analyzed using descriptive statistics and graphical representations. Results demonstrate that the black coating significantly elevated the copper plate temperature from 47.04°C to 49.14°C. This thermal enhancement led to improved thermoelectric performance, as evidenced by increased voltage from 5.54 V to 6.27 V and current from 50.64 mA to 63.73 mA. These findings confirm that a black coating on the copper heat absorber is an effective, low-cost strategy for enhancing the efficiency of solar-to-electric energy conversion in STEG prototypes.
Analysis of the 20 kV Distribution Network System Reliability Index Technically and Economically Using the Section Technique Method and RNEA at the Margorukun Feeder Moch Arfi Almi; Wrahatnolo, Tri
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 8 No. 1 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v8n1.p32-40

Abstract

The growing demand for electrical energy in line with Indonesia's economic growth and societal welfare requires a reliable distribution system. To support distribution in industrial, urban, business, and daily life contexts, a dependable system is needed to channel electrical energy to consumers. This study aims to analyze the reliability of the 20 kV distribution system using the Section Technique method and the RNEA method, from both technical and economic aspects. The assessment is conducted based on the SPLN 68-2:1986 and IEEE 1366-2003 standards, focusing on the Margorukun feeder in 2023. The calculations show that the SAIFI value using the Section Technique method is 1.14 times/customer/year, which meets the SPLN 68-2:1986 standard and is close to the IEEE 1366:2003 standard. Meanwhile, the RNEA method results in a SAIFI of 2.66 times/customer/year, which meets the SPLN 68-2:1986 standard but does not reach the IEEE 1366:2003 standard. For SAIDI, the value obtained from the Section Technique method is 4.47 hours/year, while the RNEA method reaches 6.84 hours/year; both meet the SPLN 68-2:1986 standard but do not meet the IEEE 1366-2003 standard. In terms of CAIDI, the Section Technique method shows a value of 3.92 hours/customer/year, better than the RNEA method at 2.57 hours/customer/year; however, both do not meet the IEEE 1366-2003 standard. The evaluation of ASAI and ASUI indicates that the Section Technique method is superior in service availability and reliability. Further analysis related to EENS and AENS shows that the Section Technique method is more effective, with EENS values of 49.842935 and AENS of 0.011431, compared to the RNEA method, which reaches 55.420674 and 0.012711, respectively. The economic losses calculated from the Section Technique method amount to IDR 72,008,089.35, while the RNEA method shows higher losses of IDR 80,068,247.50. The results of this study indicate that the Section Technique method is more reliable and effective in evaluating the reliability of the Margorukun feeder compared to the RNEA method, although both do not fully meet the IEEE 1366:2003 standard.
Smart Door Lock Innovation Using Integration of Bluetooth Low Energy and MQTT IoT Protocol Kurniasyah, Ikmal; Rakhmawati, Lusia
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 8 No. 1 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v8n1.p41-46

Abstract

This research develops a smart door lock system using ESP32 with Bluetooth Low Energy (BLE) and MQTT IoT protocol integration to ensure secure and efficient access control. The system supports RFID, fingerprint, and keypad authentication, with BLE utilized for device detection and proximity validation. Testing results show optimal performance, with MQTT QoS 0 achieving the highest throughput (5,052 kbps) and lowest delay (175 ms), while QoS 2 offers superior stability and minimal jitter (19 ms). RSSI analysis confirms the impact of distance and interference on BLE signal quality. The system reliably prevents unauthorized access and ensures real-time monitoring, making it suitable for modern security applications. Keywords: Smart door lock, ESP32, Bluetooth Low Energy, MQTT IoT, RSSI
Design of Semarang Denok Dance Robot Arm Movement Using STM32F103C8T6 Microcontroller Hirkham Prayoga; Parama Diptya Widayaka
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 8 No. 1 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v8n1.p47-51

Abstract

Research and development of human robots continues to progress in Indonesia, one of which is through the Indonesian Robot Competition (KRI) organized by the Indonesian Talent Development Agency (BPTI) at the National Development Agency (Puspresnas) under the Ministry of Education, Culture, Research and Technology in the Republic of Indonesia. This event consists of several parts, including the Indonesian Robot Dance Competition (KRSTI). This study aims to design and implement a robotic arm movement system that is able to imitate the Denok dance movements, a typical Semarang dance, using the STM32F103C8T6 microcontroller. This project integrates robotics technology with local cultural arts as an effort to preserve culture through technological innovation. The system is designed using an XL-320 servo motor to produce precise movements that resemble human movements, while the STM32F103C8T6 microcontroller is used as the main control brain. The test results show that the robotic arm successfully imitates dance movements with a high level of precision and good synchronization. This study is expected to be the first step in the development of cultural arts-based robotics and encourage new innovations in preserving local culture. Keywords: Robotics, Denok dance, STM32F103C8T6, cultural preservation, robot technology.
Humanoid Robot Balance System With 27 DOF Using MPU6050 Gyroscope Sensor WARNIATI, Ika Sudy Utami; Rakhmawati, Lusia
INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Vol. 8 No. 1 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/inajeee.v8n1.p52-58

Abstract

Penelitian ini bertujuan untuk membahas perancangan sistem keseimbangan pada robot humanoid penari. Dengan menggunakan sensor giroskop MPU6050 dan mikrokontroler STM32F103C8T8 dengan aktuator berupa servo MX-28 sehingga memungkinkan robot untuk menjaga keseimbangan saat melakukan berbagai gerakan tari dan berjalan dengan melewati halangan yang telah ditetapkan pada Kontes Robot Indonesia (KRI) khususnya Kontes Robot Seni Tari Indonesia (KRSTI) tahun 2023. Penelitian ini juga membahas tentang pentingnya pemilihan parameter yang tepat seperti arah putaran torsi motor servo dan pengaturan sudut untuk mencapai keseimbangan yang optimal. Robot yang memiliki kendali keseimbangan mampu menjaga kestabilan pada kondisi lintasan lintasan yang memiliki tingkat kemiringan tertentu. Dari hasil pengujian didapatkan presentase tingkat keberhasilan robot pada kondisi diam dengan beberapa sudut bidang kemiringan dan dengan menggunakan sistem keseimbangan berupa sensor MPU6050 sebesar 85%. Persentase tingkat keberhasilan robot pada kondisi diam dengan beberapa sudut bidang lintasan dan tanpa menggunakan sistem keseimbangan berupa sensor MPU6050 adalah sebesar 56%. Dari hasil seluruh pengujian dapat disimpulkan bahwa dari perancangan sistem yang telah direalisasikan, robot penari humanoid dapat menjaga keseimbangan dan kestabilan pada berbagai sudut lintasan dengan menggunakan sensor MPU6050. Keywords: Humanoid robot, Indonesian Dance Art Robot Contest, Balance sensor, Gyroscope MPU6050.    

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