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All Journal IJID (International Journal on Informatics for Development) Journal of Vocational Education Studies JIM: Jurnal Ilmiah Mahasiswa Pendidikan Sejarah Signal and Image Processing Letters
Muchlas Muchlas
Staf peneliti Balai Penelitian Tanaman Pangan Bogor, Sub Balai Penelitian Tanaman Rempah dan Obat Natar, Sub Balai Penelitian Hortikultura, Jeneponto
Humanities Computer Science & IT Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Social Sciences Other

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ONLINE LEARNING MODEL DEVELOPMENT USING GOOGLE CLASSROOM ON THE TOPIC OF ADMINISTRATION SERVER Andini, Yunita Dwi; Muchlas, Muchlas; Jumintono, Jumintono
Journal of Vocational Education Studies Vol 1, No 2 (2018)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/joves.v1i2.698

Abstract

This study aims to: (1) generate e-learning-based practice learning model of Server Administration which is valid, useful, exciting, and can be applied to improve the learning outcomes of students in the subject of Administration Server; (2) determine the effectiveness of the implementation of Google Classroom on practice learning Administration Server; (3) monitor the learners in the learning process Server Administration practices inside and outside learning. This study is a Research and Development (R & D) to the conceptual model and using research procedures Borg and Gall. Results obtained eligibility percentage of media experts of 77.5% and 78.5% matter experts with criteria are eligible. Implementation level learning model captured very well at 91.66%. The level of attractiveness of the learners XII TKJ 1 amounted to 83.9% and XII TKJ 2 of 85.1% with very interesting criteria. The results of the analysis of the primary field trials assessing the effectiveness aspect, the value of the students after using the learning model and the overall increase learners or 100% to reach KKM with a limit value of 75, so it can be said to be a beneficial learning model to increase the number of learners.
DEVELOPMENT OF LEARNING DEVICES OF BASIC ELECTRONIC VIRTUAL LABORATORY BASED ON PSPICE SOFTWARE Muchlas, Muchlas; Budiastuti, Pramudita
Journal of Vocational Education Studies Vol 3, No 1 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/joves.v3i1.2085

Abstract

The availability of modules to support basic electronic practices based on virtual laboratories has not yet met the needs. The purpose of this development research is to produce basic electronic practice learning devices based on the PSPICE application program. The development procedure uses ADDIE (analysis, design, development, implementation, evaluation). ADDIE is used to direct the design process as specified. Product performance was tested using ongoing formative evaluation. The product feasibility test uses a comparative analysis of the results of the PSPICE experiment against the theory. The results show that all modules developed can display the same characteristics as their theoretical character. The results show that the modules have very good performance. Modules are suitable for use as a medium for basic electronic practice using PSPICE-based virtual laboratories. The products are in the form of electronic circuits with 31 schematic PSPICE formats. Product results to support basic electronic practices covering topics: capacitor filling and discharging, RC circuits, diode characteristics, wave forming circuits, rectifier circuits, voltage clamp, voltage circuits, transistor characteristics, and amplifier transistor.
Development of Learning Model of Youtube-Based Learning in Light Vehicle Electricity Maintenance Subject Saputra, Indra; Muchlas, Muchlas; Achsan, Bambang Nor
Journal of Vocational Education Studies Vol 3, No 2 (2020)
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/joves.v3i2.2652

Abstract

This study aims to develop a learning model of Youtube-Based Learning to facilitate the learning habits of digital-age students. This research used the research and development method. The research steps were analysis of potential and problems, data collection, product design, design validation, design revisions, limited implementation test, revisions, implementation tests, revisions, and mass production. Subject research was the students of class XI of Light Vehicle Engineering at SMK Muhammadiyah 1 Playen. Research data collection used closed questionnaire, open questionnaire, and integrated with interviews and observations. The data analysis technique used the effect size test. The results showed that the validity of Youtube-Based Learning included in the very feasible category to apply. The contribution given by Youtube-Based Learning on student learning outcomes was 58%. Other results showed that students and teachers gave positive responses to the learning model of Youtube-Based Learning.
Kebiasaan Belajar Siswa Sekolah Menengah Kejuruan Saat Pandemi Covid-19 Di SMK Muhammadiyah Purwodadi Purworejo Indriati*, Kurnia; Muchlas, Muchlas; Sayuti, Muhammad
JIM: Jurnal Ilmiah Mahasiswa Pendidikan Sejarah Vol 8, No 3 (2023): Juni, socio-economics, community law, cultural history and social issues
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jimps.v8i3.25117

Abstract

Tujuan penelitian adalah untuk menganalisis (1) kebiasaan belajar siswa saat pandemi Covid-19 di SMK Muhammadiyah Purwodadi Purworejo, (2) respons guru dan (3) kepala sekolah terhadap perubahan kebiasaan belajar siswa saat pandemi Covid-19.Metode penelitian yang digunakan adalah kualitatif dengan pendekatan analisis tematik. Subjek penelitian ini terdiri dari perwakilan 9 orang siswa dari kelas yang berbeda, 4 guru dan kepala sekolah.Teknik pengumpulan data yang digunakan yaitu wawancara, observasi partisipan, dan dokumentasi. Hasil penelitian menunjukan bahwa; (1) kebiasaan belajar siswa SMK Muhammadiyah Purwodadi Purworejo saat pandemi Covid-19 meliputi penerapan strategi dan teknik pembelajaran yang dilakukan siswa, tujuan belajar siswa, cara menambah pengetahuan dan keterampilan lain saat dilakukan pembelajaran daring, suasana belajar sebelum dan selama pandemi Covid-19, sumber belajar yang dipakai sebelum maupun saat pandemi Covid-19, pengaturan diri, dan dukungan lingkungan belajar siswa. (2) respons guru dalam menghadapi perbedaan kebiasaan belajar siswa adalah dengan memberi beberapa masukan. Masukan tersebut antara lain berkaitan dengan aturan belajar, pemanfaatan media informasi digital dan fasilitas yang diberikan, memanfaatkan waktu belajar, persiapan belajar yang baik, merubah pola dan metode mengajar guru, guru melakukan pembelajaran yang menyenangkan, komunikatif, dan evaluasi. (3) respons kepala SMK Muhammadiyah Purwodadi dalam menghadapi perbedaan kebiasaan belajar siswa adalah mengambil kebijakan, melakukan blended learning, mengedepankan capaian kompetensi siswa, memberikan ruang konsultasi, keringanan biaya, pemenuhan fasilitas belajar, peenuhan sumber belajar, peningkatan kapasitas guru, dan melakukan evaluasi.
Handwriting Arabic Character Recognition Using Features Combination Qomariyah, Fitriyatul; Utaminingrum, Fitri; Muchlas, Muchlas
IJID (International Journal on Informatics for Development) Vol. 10 No. 2 (2021): IJID December
Publisher : Faculty of Science and Technology, UIN Sunan Kalijaga Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/ijid.2021.2360

Abstract

The recognition of Arabic handwriting is a challenging problem to solve. The similarity among the fonts appears as a problem in the recognition processing. Various styles, shapes, and sizes which are personal and different across individuals make the Arabic handwriting recognition process even harder. In this paper, the data used are Arabic handwritten images with 101 sample characters, each of which is written by 15 different handwritten characters (total sample 101x15) with the same size (81x81 pixels). A well-chosen feature is crucial for making good recognition results. In this study, the researcher proposed a method of new features extraction to recognize Arabic handwriting. The features extraction was done by grabbing the value of similar features among various types of font writing, to be used as a new feature of the font. Then, City Block was used to compare the obtained feature to other features of the sample for classification. The Average accuracy value obtained in this study was up to 82%.
Microcontroller-based Soft Starter and Overcurrent Detector for Enhancing Performance of Induction Motor Lestiana, Leila; Muchlas, Muchlas; Sutikno, Tole
Signal and Image Processing Letters Vol 6, No 1 (2024)
Publisher : Association for Scientific Computing Electrical and Engineering (ASCEE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31763/simple.v6i1.92

Abstract

When an induction motor starts up, it draws a large current, which can damage it and cause a voltage dip effect that interferes with other electrical equipment. The machine, however, has numerous applications, particularly in the industrial sector, due to its low cost, robustness, and dependability. Induction motor performance must be improved to reduce starting current surges and protect against overcurrent. Thyristors are used in the developed system to control the voltage level. The microcontroller's trigger pulse causes a ramp-up in supply voltage, resulting in a soft-starting effect in a 1-phase induction motor. The system detects overcurrent using the popular current sensor module. This research results in a high-performing soft starter and overcurrent detector. When compared to supplying the motor directly online, the soft-starter unit can reduce the starting current by 55%. Meanwhile, the embedded overcurrent detector performs admirably, accurately detecting motor overcurrent and cutting off the power supply when the motor reaches overcurrent.
Parking System Using Nodemcu Microcontroller Based Infrared Sensor Arifin, Muhammad; Muchlas, Muchlas
Signal and Image Processing Letters Vol 3, No 3 (2021)
Publisher : Association for Scientific Computing Electrical and Engineering (ASCEE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31763/simple.v3i3.74

Abstract

Vehicles are one of the important things in supporting the mobility of people and goods quickly, safely and comfortably. Cars are one of the most widely used types of vehicles because they can accommodate many people or goods. This study aims to make a prototype of an organized parking lot so that it is easier for car users to find parking. The system in this study uses a NodeMCU microcontroller as the controller. Infrared sensors are used as sensors to detect the state of the parking area. The system has two outputs in the form of an LED and a website. Infrared sensors can detect all parking area conditions, LEDs run according to parking area conditions, and the website can be used as remote monitoring of the parking area of this system. Parking area users can easily find an empty parking area.
Smart Fan Using Room Temperature Sensor and Human Movement Ciputra, Tri Yuga; Muchlas, Muchlas
Signal and Image Processing Letters Vol 5, No 1 (2023)
Publisher : Association for Scientific Computing Electrical and Engineering (ASCEE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31763/simple.v5i1.60

Abstract

Fans are electrical equipment that people often need in their daily lives. Fans that are available in the market generally use a manual button to turn it on and off. It is necessary to develop a system so that the fan can be turned on automatically without the need to press a button on the fan. The system designed in this study has PIR, LM35 and Ultrasonic sensor devices, while the control uses an Arduino Uno microcontroller. PIR testing is done by measuring the sensor output for each input object movement. The LM35 sensor was tested by comparing the temperature measurement results obtained with the measurement results using a standardized digital thermometer. The ultrasonic sensor is tested by comparing the detected distance reading to the actual distance using a ruler placed under the sensor. Overall system testing is done by observing the fan rotation for each given input parameters. The criteria used are if there is human movement and the room temperature is above 28 0C and the object distance is less than 16 cm, then fan 1 and fan 2 rotate simultaneously. Another criterion, if the temperature is below 28 0C, then fan 1 turns off even though there is human movement and fan 2 remains on because the object distance is limited to less than 16 cm. The results showed that the system had worked well, namely fan 1 and fan 2 had behaved according to the specified criteria. This system is expected to be used to assist humans in operating the fan automatically based on room temperature, human movement, and human distance.
Co-Authors Achsan, Bambang Nor Andini, Yunita Dwi Budi Santosa Budi Santosa Budiastuti, Pramudita Ciputra, Tri Yuga Indra Saputra Indriati*, Kurnia Jumintono, Jumintono Lestiana, Leila LUTHFATUN NISA Muhammad Arifin Sahria, Yoga Sayuti, Muhammad Tole Sutikno Tri Kuat, Tri Utaminingrum, Fitri