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ELINVO (Electronics, Informatics, and Vocational Education)

elinvo
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Published by Universitas Negeri Yogyakarta

ISSN : 25806424 EISSN : 24772399 DOI : 10.21831

Core Subject : Science, Education, Engineering,

Computer Science & IT Education Electrical & Electronics Engineering

ELINVO (Electronics, Informatics and Vocational Education) is a peer-reviewed journal that publishes high-quality scientific articles in Indonesian language or English in the form of research results (the main priority) and or review studies in the field of electronics and informatics both in terms of their technological and educational development.

Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro

Articles 11 Documents

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Search results for , issue "Vol 7, No 2 (2022): November 2022" : 11 Documents clear

Improvement of Student Attendance System for Recording Student Surface Body Temperature Based on Internet of Things Mas Aly Afandi; I Ketut Agung Enriko; Muhammad Aulia Baihaqy
Elinvo (Electronics, Informatics, and Vocational Education) Vol 7, No 2 (2022): November 2022
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

Student attendance is a system used for tracking student activity in school. Many methods are used to develop student attendance systems, such as Quick Response (QR) Code systems, Radio Frequency Identification (RFID) systems, fingerprint systems, and so on. The COVID-19 pandemic has driven technological development, especially in the student attendance system. Measuring human surface body temperature has become a protocol that must be done before entering school. Student attendance systems need to expand the function not only for attendance but also for monitoring student surface body temperature. This research aims to improve student attendance systems by adding surface body temperature measurements and recording during student presence. Recording data can be done by using the internet of things. Student presence data will be sent to school databases throughout the internet. This system uses RFID technology for student presence and a non-contact thermal sensor for temperature measurement. According to data research, non-contact thermal sensors provide a temperature reading with an average error of 1.69%, a minimum error value of 0.96%, and a maximum error value of 2.57% with a range error value of 0.35°C – 0.95°C. RFID test shows that the optimum distance for the system to read an RFID card is 0 – 2cm. The System also successfully sent presence data to the student school database through the internet. This study concludes that developed systems can track student attendance by recording the student’s surface body temperature while in presence. Further work will be focused on managing data networks if this system is used with many users in the school.

Development of Adaptive MOOCs to Support Personalized Learning: Mixed Method Analysis P. Priyanto; Ahmad Chafid Alwi; Siti Irene Astuti Dwiningrum; Amrih Setyo Raharjo; Akhsin Nurlayli
Elinvo (Electronics, Informatics, and Vocational Education) Vol 7, No 2 (2022): November 2022
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

This study aims to explain the development of adaptive MOOCs that support personalized learning. This study was designed with a mixed method design of sequential explanatory type at the association level. Quantitative analysis used confirmatory factor analysis (CFA) (n = 110) and was deepened with qualitative analysis of the Miles and Huberman model. Quantitatively measured domains include accessibility, learning curriculum, competence, motivation, satisfaction, efficacy, and self-study. The domain was used as a reference for qualitative data mining through focus group discussions (FGD) involving lecturers and doctoral students (n = 25). The analysis results show that the curriculum domain and one of the motivational indicators should be removed because it did not meet the requirements after bootstrapping. The second running algorithm showed all valid and reliable variables. Some domains that significantly affect MOOC user satisfaction are efficacy, competence, and motivation. R square results showed 37% influenced by motivation, accessibility, efficacy, and self-study, and the rest influenced by other variables. In the qualitative analysis, 19 subcodes were found that were included in the three main codes. In conclusion, there is new information in the accessibility domain that expands quantitative data, including information on MOOCs, marketing traps, regulation, and dropouts. Meanwhile, what strengthens and deepens quantitative data is found in the information on metacognitive and personalized coding that strengthens the domain of efficiency, the domain of competence, which is strengthened by content, mentoring collaboration, and motivation reinforced by coding the user's motivations and goals.

Development of Web-Based Project Tender Documents Application Using Extreme Programming Methods Mustari Lamada; Aminuddin Bakry; Aulyah Zakilah Ifani; Khaerunnisa Khaerunnisa
Elinvo (Electronics, Informatics, and Vocational Education) Vol 7, No 2 (2022): November 2022
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

The application of technology is a need that is in demand in the industrial world today, especially in the field of contractors of goods and services that have implemented the use of applications to help the process of managing data and project documents in their companies. This study aims to optimize the web-based project tender document system using the extreme programming method. The extreme programming method consists of planning, design, coding, testing, and software increment. Research methods using extreme programming methods consisting of planning, design, coding, testing, and software increment. The planning stages obtain results in the form of functional and non-functional application needs. The design stage results in the design of applications using activity diagrams, diagram classes, use case diagrams, and flowcharts. The coding stages obtain results in the form of applications that can be built using web programming languages. The testing stage uses the ISO 9126 standard. Suitability test results are worth 1 (very good), security is not found to have viruses or malicious malware in applications (grade B), reliability is worth 0.99 (good), usability is worth 90.9% (very feasible), efficiency is worth 98% (grade A), maintainability meets the three standard aspects of assessment (good), and portability is worth 1 (very good). The software increment stage obtained results in the form of implementation and application trials on users who have functioned properly. Based on the results, it can be concluded that the development of web-based project tender document applications using extreme programming methods can function properly and be feasible to use.

Development of Virtual Learning using Problem-Based Learning Models for Vocational Education Students Doni Tri Putra Yanto; Maryatun Kabatiah; Hermi Zaswita; Giatman Giatman; Hansi Effendi
Elinvo (Electronics, Informatics, and Vocational Education) Vol 7, No 2 (2022): November 2022
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

This study discusses efforts to improve the implementation of remote learning that is not optimal through the development of Virtual Learning using the Problem-Based Learning Model for vocational education students in the learning process of Electrical Lighting Installation at Vocational High School (SMKN) 2 Lubuk Basung, Sumatera Barat Province. The emergence of the Covid-19 pandemic demands a rapid change in the implementation of learning from face-to-face learning in the classroom to remote learning. This change requires innovations in implementing learning such as media and learning models to ensure optimal learning implementation even though it is carried out remotely. The 4-D development model (Four-D) is applied in this study as a research product development model consisting of 4 stages: Define, Design, Develop, and Disseminate. The instrument used for data collection in the study is a questionnaire for the validity and practicality assessment instrument. The results showed that the virtual learning developed using the Problem-Based Learning Model was valid to be applied in the learning process. After being tested in the learning process, the Virtual Learning developed has been practically used in the learning process to optimize the implementation of learning and improve student learning outcomes. It can be concluded that the Virtual Learning developed with the Problem-Based Learning Model is valid and practical to use in the learning process to optimize the implementation of electric lighting installation learning for vocational education students.

Performance Analysis Of The Energy Harvesting Techniques In Cooperative Communication Systems of NBIoT Devices With Amplify And Forward (AF) Relaying Protocol Ines Sastre Umayya; Muhamad Milchan; Hendy Briantoro; Yoedy Moegiharto
Elinvo (Electronics, Informatics, and Vocational Education) Vol 7, No 2 (2022): November 2022
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

This study examines the system’s performance with implementation of the energy harvesting (EH) techniques at source node, S and relay node, R. The RF signals which are used to energy harvesting proccess are broadcasted by destination node, D. The information signals from S are sent to D via a R in a cooperative communication framework. The R uses the amplify and forward (AF) protocol to forward the received signal from S to D. We propose a network system which contain of three femto cells, and an access point of each femto cells work as a relay (R), in a macro cell with a base station or eNB as a destination (D). To find the best R for forwarding the information signal from S to D, we choose the partial relai selection strategy. From the simulation results can be shown that the throughput system and the outage probability system are affected by the location of S or the distance of between S-R and S-D. Also affected by the access point power of femto cell that is connected to electric source, and time swithing factor, ρ which is used to harvest energy at S and R nodes. The shorter distance of between S-R and S-D results a better value of throughput system and the outage probability system, since the gain channel value will be high and increases the SNR value at D. More bigger the power from battery of access point femto cell that is used together with the harvested power by R to forward the signal will result a better value of throughput system and the outage probability system. More smaller time swithing factor, ρ results more time period for transmitting signal by S and forwarding sinyal by R, therefore increases the transmit power at S and R. Increasing the transmit powers result the increasin SNR value at D, and result a better value of throughput system and the outage probability system.

Comparison of Web 2.0 Use on State University Websites in Indonesia and Top World Universities Related to Webometric Ranking Handaru Jati
Elinvo (Electronics, Informatics, and Vocational Education) Vol 7, No 2 (2022): November 2022
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

The present work determines the presence in the web 2.0 that twenty universities had through their educational portals. The universities are selected according to the Webometrics ranking (the ten best located in Indonesia and the best located worldwide) to identify what Web 2.0 tools they use. This study explores the educational portals of the twenty selected universities to determine which Web 2.0 tools they use and variables of the tools found will be assessed. The study only considers those Web 2.0 tools which are linked to the websites of universities. Of the two most used tools, the relevant indicators are quantified from Youtube "Subscribers" and "Views " and Twitter "tweets" following", and "followers". Afterward, the results are shown and analyzed to establish possible relationships between the indicators of each tool. The results reflect the heterogeneous and, in many cases, polarized presence that universities had on web 2.0 through their educational portals. We hope that the work will help universities have a verifiable reference instrument to develop their academic communication strategies through these tools on the way to a 2.0 university model.

Monitoring and Controlling Temperature Egg Incubator Prototype Based LoRa Communication Mas Aly Afandi; Fadhila Karin Purnomo; Raditya Artha Rochmanto; Sevia Indah Purnama
Elinvo (Electronics, Informatics, and Vocational Education) Vol 7, No 2 (2022): November 2022
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

Poultry industries encounter problem in produce day old chicken (DOC). Poultry industries usually produce DOC using egg incubator. Egg incubator must have high accuracy in reading environment temperature inside the machine. The temperature environment inside the egg incubator machine needs to keep in range 36°C - 40°C. On the other hand, hatcheries and chicken coop usually not in one place. Poultry industries require applied technology to solve this problem. This problem can be solved by using internet of things. But internet of things can be so expensive. This research is aim to implement monitoring and controlling temperature inside egg incubator prototype while using low-cost communication technology. Research result showed that the control system could maintain egg incubator prototype temperature in optimal range with an accuracy of 99,63%, 99,83%, 99,97%,99,64%, and 99,37% when reading a temperature of 36°C, 37°C, 38°C, 39°C, and 40°C respectively. This research implements Long Range (LoRa) technology for monitoring system. Different with internet of things technology, point to point LoRa communication does not needs payment to communicate but still provide wide area communication. According to research result, point to point LoRa communication provide good performance in sending temperature data in range area 50m, 100m, 150m, 200m, 250m, and 300m with good average Receive Signal Strength (RSSI). This research can conclude proposed egg incubator can keep temprature in optimal range. Proposed incubator also can communicate properly to send data temperature for monitoring temperature.

Realtime Monitoring System of Solar Panel Performance Based on Internet of Things Using Blynk Application Inayatul Inayah; Nur Hayati; Aflah Nurcholis; Achmad Dimyati; Muhammad Ghofinda Prasetia
Elinvo (Electronics, Informatics, and Vocational Education) Vol 7, No 2 (2022): November 2022
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

Renewable energy is one of the options to meet the increasing energy needs. As a tropical country, Indonesia has great potential for solar energy development. At this time, solar panels have been built in places exposed to direct light. However, monitoring solar panels is still performed manually using a multimeter by operators or field officers, so it cannot be performed in real-time. Real-time tracking is carried out to prevent damage and decreased performance of solar panels. Hence, we designed a real-time solar panel monitoring system based Internet of Things (IoT) using the Blynk application on a smartphone. Based on the test between the measuring instrument and the Blynk application, the error percentage is 0.59% for voltage testing, 0.0001% for current testing, 1.03% for power testing, and 2.09% for temperature testing. A strong internet connection will significantly affect the performance of solar panels in real-time. This research is expected to monitor solar panel parameters remotely via a smartphone without having to come to the location and make it easier for users to monitor.

Front Matter Vol 7 No 2 Editorial Team Editorial Team
Elinvo (Electronics, Informatics, and Vocational Education) Vol 7, No 2 (2022): November 2022
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

BLDC Motor Drives with A Programmable Simplified C-Block to Generate Accurate Six-Step PWM Based on STM32 Microcontroller Muhammad Rizani Rusli; Mentari Putri Jati; Mochamad Ari Bagus Nugroho; Ony Asrarul Qudsi; Indhana Sudiharto; Farid Dwi Murdianto; Endro Wahjono
Elinvo (Electronics, Informatics, and Vocational Education) Vol 7, No 2 (2022): November 2022
Publisher : Department of Electronic and Informatic Engineering Education, Faculty of Engineering, UNY

This paper presents a digital implementation of a brushless direct current motor (BLDCM) drive with a six-step pulse width modulation (PWM) using a programmable simplified C-block based on the STM32 microcontroller. The implementation is conducted through the PSIM simulation platform, which is commonly used for power electronics and motor control. This approach combines the benefits of using a programmable simplified C-block for precise and flexible programming with the PWM concepts of the STM32 microcontroller. The PWM method used on the BLDCM drive is the unipolar upper PWM technique (H~PWM_L~ON). The performance of the PWM implementation is analyzed in detail, including the accuracy of the PWM generation using a Fast Fourier Transform (FFT), the gating of the IGBTs in the three-phase inverter, and the effect of the duty cycle on the BLDCM's speed, phase voltage, and phase current.

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