Garuda - Garba Rujukan Digital

Effectiveness of E-Learning-Based Learning in the Era of Digital Transformation: A Meta-Analysis Setyawan, Herlin; Sukardi; Risfendra; Jalinus, Nizwardi; Mardizal, Jonni; Ananda, Gheri Febri
Indonesian Journal of Educational Research and Review Vol. 7 No. 2 (2024): July 2024
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/ijerr.v7i2.76166

Amid digital transformation in the 21st century, the use of digital technology, such as e-learning, in the learning process has become urgent to develop vocational school students' knowledge and skills. However, some studies show that online learning is ineffective in improving vocational school students' knowledge and skills. Online learning cannot improve students' vocational skills because the online learning process cannot conduct actual practicum. Therefore, this study aims to analyze the effectiveness of online learning to improve vocational students' knowledge and skills. The research method used was random effect model meta-analysis with Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) article analysis technique. A total of 25 articles from the Scopus, Google Scholar, and Wiley databases were obtained and analyzed in this study. The articles analyzed were free from publication bias, as indicated by the funnel plot, Egger's, and Fail-safe N test results. Based on the meta-analysis results, it is known that the effect size value obtained is 0.703 (medium category). Thus, implementing online learning in vocational schools has a moderate impact on improving vocational students' knowledge and skills. The findings of this study indicate that the implementation of online learning in vocational schools can support the effectiveness of learning in vocational schools and encourage students to develop the knowledge and skills they will master. This research is expected to be the basis for teachers and vocational schools to integrate online learning into the learning process.

The Effectiveness of Outseal Programmable Logic Controller-based Training Kit to Improve Vocational High School Students' Control System Skills Setyawan, Herlin; Sukardi; Risfendra; Effendi, Hansi; Syahril
Mimbar Ilmu Vol. 29 No. 2 (2024): August
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/mi.v29i2.76065

The problem in this study is that many students still have not mastered the skills of PLC-based control systems in accordance with the learning objectives. This is because the learning media is only a simulation using buttons and pilot lights without using the original components. The aims of this study is to examine and reveal the effectiveness of the outseal PLC-based PLC training kit in improving students' practical skills in PLC-based control systems. Pre-experiment one group pre-test and post-test is the research methodology used in this study, with a research sample of 32 students from the electrical power installation engineering department vocational school. The research data were collected using a skill assessment questionnaire and analyzed using paired sample t-test analysis technique and effect size test. The results revealed that the t-value obtained was 7.915 with a significance of 0.000 and a value of d = 1.701. These results show differences in students' skills after and before using the training kit that is applied and proven to improve student skills significantly. Thus, it is proven that this training kit effectively improves vocational students' skills. Based on these results, vocational high schools are expected to apply this training kit to facilitate learning and improve students' PLC-based control system skills.

Improving the Competence of Electrical Power Installation Engineering Teachers in the Field of Smart Building Control Systems Setyawan, Herlin; Habibullah; Risfendra; Sardi, Juli; Maulana, Ricky; Mulya, Rudi
Mimbar Ilmu Vol. 30 No. 1 (2025): April
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/mi.v30i1.88131

The problem addressed in this study is the mismatch between teachers’ existing competencies and the demands of the industry, particularly in smart building control systems, resulting in graduates lacking these essential skills. This study aims to enhance teachers’ professional competencies in smart building control systems through targeted training using smart building technology. A pre-experimental method was employed with one experimental class consisting of 16 teacher participants, using tests to assess knowledge and questionnaires to evaluate skills. The results were analyzed using paired-sample t-tests and effect size calculations, revealing significant improvements in both teachers’ knowledge and skills after the training. Furthermore, the large effect size indicates that the training had a substantial impact on enhancing competencies. These findings suggest that structured and precise training can effectively improve teachers’ knowledge and skills in emerging industrial technologies, which in turn positively influences the quality of education and increases graduates’ competitiveness in the labor market.

SCARA Robot Application for Automatic Vending Machine Movement Based on HMI dan IoT Febrianto, Fauzan; Risfendra
Journal of Industrial Automation and Electrical Engineering Vol. 1 No. 2 (2024): Vol 1 No 2 (2024): December 2024
Publisher : Department of Electrical Engineering Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/d6bn9082

This design discusses the application of HMI and IoT-based SCARA robots to control and monitor the movement of vending machines. The purpose of this design is to be able to perform programming on the SCARA Robot using the RC-90B Controller and Programmable Logic Controller (PLC), design interface designs for control systems, and monitor system responses using the Human Machine Interface (HMI) and Internet of Things (IoT). As well as testing the functional performance of the SCARA robot and Node-RED. This design is supported by the RC-90B controller, Siemens S7-1200 PLC, Seimens KTP-700 Basic PN HMI, and Node-RED. A series of programming processes and making system interfaces are carried out using Epson RC-7.0 software, TIA Portal, and Node-RED. In this design, a vending machine movement process will be made, namely: pick, place, and assembly materials using vacuum and gripper assistance. In addition, the author also uses the palletizing function in the material preparation process. Then take important data such as robot speed, cycle time, and success rate, where each product is tested and get the best results with a 0% error value

Effect of 6-Axis Robot Speed on Cycle Time and Accuracy as Pick and Place Media on Dummy CNC Jayasri Iniko Wirefa; Risfendra
Journal of Industrial Automation and Electrical Engineering Vol. 2 No. 1 (2025): Vol 2 No 1 (2025): June 2025
Publisher : Department of Electrical Engineering Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/w3hdxr48

This study investigates the impact of a 6-axis robot's speed on cycle time and accuracy in pick-and-place operations integrated with CNC machines. As Industry 4.0 emphasizes automation and efficiency, optimizing robotic performance in manufacturing processes is critical. The experiment tested five speed variations (20%, 40%, 60%, 80%, and 100%) to analyze their effects on cycle time and placement accuracy. Results demonstrated a significant reduction in cycle time as speed increased: from an average of 66.45 seconds at 20% speed to 26.83 seconds at 100%. However, maximum speed (100%) introduced vibrations, causing placement errors and robot failures due to excessive force detection. In contrast, 80% speed achieved an optimal balance, maintaining high accuracy (no errors) with a cycle time of 29.07 second, only 2.24 seconds slower than 100%. The study concludes that while higher speeds enhance productivity, 80% is recommended as the default setting to ensure precision and operational reliability. The integration of sensors, grippers, and automated door control further validated the system's effectiveness in industrial CNC applications.

Cycle time analysis of automation system using PLC and HMI based Scara Robot Vikry Alvi Putra; Risfendra
Journal of Industrial Automation and Electrical Engineering Vol. 2 No. 1 (2025): Vol 2 No 1 (2025): June 2025
Publisher : Department of Electrical Engineering Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/asxh9y88

This article discusses about the design of palletizing machine automation system using SCARA robot based on PLC and HMI. The purpose of this design is to be able to perform programming on the SCARA Robot using a Programmable Logic Controller (PLC), design an interface design for the control system and monitor the system response using a Human Machine Interface (HMI). And test the functional performance of the SCARA T3 robot. The design is supported by Siemens S7-1200 PLC device and Siemens KTP-700 Basic PN HMI. A series of programming processes and making system interfaces are carried out using Epson RC + 7.0 and TIA Portal software. The results of the test can be concluded the design of the palletizing machine automation system can run well at 80% high speed with a 100% success percentage and 0% error percentage.

Analysis of Scara Robot program design using PLC for material handling automation system Abdul Hakim; Risfendra
Journal of Industrial Automation and Electrical Engineering Vol. 2 No. 1 (2025): Vol 2 No 1 (2025): June 2025
Publisher : Department of Electrical Engineering Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/tg6dzr83

Industrial automation is increasingly developing in improving efficiency and productivity, one of which is the use of SCARA (Selective Compliant Articulated Robot Arm) robots. This research discusses the design and testing of SCARA robot programs for material handling automation systems based on Programmable Logic Controller (PLC). Testing is done using software and hardware, including function block diagrams, and implementation of the SCARA robot program. The test results show that the designed automation system can function optimally, with integration between the robot, conveyor, and sensors running efficiently. In addition, the robot program is able to execute commands with high accuracy, including automatic material removal. This success confirms that the system design can be applied to improve efficiency in industrial production processes.

Effect of SCARA Robot speed on bottle cap fitting on rotary indexing table Simanullang, Aldi; Risfendra
Journal of Industrial Automation and Electrical Engineering Vol. 2 No. 1 (2025): Vol 2 No 1 (2025): June 2025
Publisher : Department of Electrical Engineering Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/fey4j053

In the Industry 4.0 era, the integration of SCARA robots with rotary indexing tables has significantly improved automation in assembly processes, particularly in bottling lines. This study investigates the effect of speed variation of the SCARA robot on the accuracy and quality of bottle cap installation using a rotary indexing table. The system was developed using a Siemens S7-1200 PLC, an Epson T6 SCARA robot, and supporting actuators such as pneumatic cylinders and stepper motors. Experiments were conducted at five different robot speeds: 10%, 20%, 30%, 40%, and 50%, with five trials for each setting. The results show a 100% success rate at 10%, 20%, and 30% speed, with proper alignment between the bottle and cap. However, at 40% speed, the success rate dropped to 85% due to minor misalignment. At 50% speed, the assembly failed completely due to synchronization issues and excessive force, resulting in a 0% success rate. These findings emphasize the importance of speed optimization to maintain synchronization between the SCARA robot and the rotary indexing table, ensuring an efficient and accurate automated bottling process

Effect of robot speed on cycle time and success rate in Automated Cover Assembly and Screwing Adrianto, Raihan Nanda; Risfendra
Journal of Industrial Automation and Electrical Engineering Vol. 2 No. 1 (2025): Vol 2 No 1 (2025): June 2025
Publisher : Department of Electrical Engineering Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/29x36k07

This study investigates the effect of robot speed on cycle time and success rate in an automated cover assembly and screwing process. The experimental method was used to collect data by systematically varying the robot’s movement speed and observing its impact on performance metrics. Experiments were conducted on a six axis Epson C4 industrial robot integrated with a Siemens S7 1200 programmable logic controller (PLC). Robot speed was adjusted across ten predefined levels from 6% to 33% of maximum velocity in 3% increments and for each level, three repeated trials were executed under controlled conditions. Results show that increasing speed from 6% to 33% reduces average cycle time from 908.6 s to 503.6 s for 4 product (227,1s–125,9s per product), a 44.6% improvement in efficiency. The relationship between speed and success rate is nonlinear: moderate speeds (27%–30%) yield an optimal success rate of 93.75% with cycle times of 517 s–533 s for 4 product (129s–133s per product), whereas both lower and maximum speeds decrease reliability due to vacuum pickup misalignment and screw retrieval inconsistencies. These findings underscore the need to balance speed and precision to optimize both efficiency and reliability in robotic assembly systems

Implementation of IoT for temperature monitoring system on combustion furnace Prayoga, Noval; Risfendra
Journal of Industrial Automation and Electrical Engineering Vol. 2 No. 2 (2025): Vol 2 No 2 (2025): December 2025
Publisher : Department of Electrical Engineering Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jiaee.v2.i2pp91-97

Combustion equipment requires precise and continuous temperature monitoring to ensure process safety and efficiency. Manual monitoring often causes delays and a lack of real-time feedback, which increases the risk of thermal instability. To address this issue, this study proposes an IoT-based temperature monitoring system that uses affordable and open-source components. The system uses an ESP32 microcontroller and a type K thermocouple for temperature measurement. Temperature data is transmitted via Wi-Fi to a PHP-based web server, stored in a MySQL database, and displayed in real-time through a remotely accessible web interface. The development method involved system design, sensor integration, microcontroller programming, and testing. Flowcharts and block diagrams were created to define the system's behavior. The system was evaluated through sensor accuracy testing, data verification, and latency measurements. The results showed that the sensor had an error margin of less than 5% compared to a gun thermometer. Data recorded by the ESP32 matches 100% with database and web outputs. Average data transmission delay is approximately 3 seconds, indicating responsive real-time monitoring. This system demonstrates a reliable, scalable, and cost-effective solution for industrial furnace monitoring, enhancing operational safety through IoT-based automation.

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