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All Journal Jurnal Periodic Jurusan Kimia UNP Sainstek Jurnal Penelitian dan Pembelajaran Fisika Jurnal Pengajaran MIPA Jurnal Pendidikan IPA Indonesia Jurnal Sosioteknologi Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Jurnal Pendidikan Biologi Indonesia JOIV : International Journal on Informatics Visualization INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Penelitian Pendidikan IPA (JPPIPA) Momentum: Physics Education Journal Spektra: Jurnal Fisika dan Aplikasinya JSKK (Jurnal Sains Keolahragaan dan Kesehatan) JURNAL EKSAKTA PENDIDIKAN (JEP) Bio-Lectura Kwangsan: Jurnal Teknologi Pendidikan Eksakta : Berkala Ilmiah Bidang MIPA Al-Ta'lim Pelita Eksakta Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Sainstek : Jurnal Sains dan Teknologi Indonesian Journal of Electrical Engineering and Computer Science Studies in Learning and Teaching Wahana Dedikasi : Jurnal PkM Ilmu Kependidikan Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika JURNAL MUARA PENDIDIKAN JRFES Journal of Experimental and Applied Physics
Yohandri
Department Of Physics, Universitas Negeri Padang
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Development of Connected Wheel Motion Experiment System with Remote Laboratory Based IoT using the Web Rahmat Dito Tri Wicaksono; - Asrizal; - Yohandri; - Hufri; Rio Anshari
PILLAR OF PHYSICS Vol 16, No 2 (2023)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/15044171074

Abstract

Remote measurement is a trend that is in great demand today. The development of connected wheel motion experiment system with a remote laboratory is aimed at effectiveness in experimental activities. This research is based on the weaknesses of previous research that there is no login system, queuing system, and time limit for using the experimental system. Based on these weaknesses, this study provides a solution to the experimental system with a login system, queuing system, and time limit for using the device. The Design and Development (D&D) method is the method chosen in this study. From the data analysis it can be stated in general that there are two results in this study. The first result is the performance specification of the related wheel drive experimental system where the function of each component of the experimental system has a performance according to the function of each component. The second result is the accuracy and precision of the associated wheel motion experimental system. Accuracy results for concentric wheels, obtained an average accuracy of 97.19% and 98.23%. Accuracy for connected wheels to ropes obtained an average result of 98.28% and 98.98%. The results of the angular velocity precision test on concentric wheels obtained an average of 99.43% and 99.09%. The precision of the angular velocity obtained on the wheels connected by a rope is 99.68% and 97.78% 
Carbon Monoxide Measuring System using MQ-7 Sensor with Cloud Storage Irfan Muhammad Zaqi; - Yohandri; - Yulkifli; Nofi Yendri Sudiar
PILLAR OF PHYSICS Vol 16, No 2 (2023)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/13451171074

Abstract

Carbon monoxide (CO) gas cannot be detected by sight or smell but is highly detectable and is formed from incomplete combustion such as in motor vehicles. Currently monitoring CO gas levels and measurement data at any time cannot be accessed all the time. Therefore, a measuring instrument system with data storage is required. We developed an instrument to measure CO gas levels in the air. The system developed uses the MQ-7 and ESP8266 sensors to produce a CO gas level measurement device with Cloud Storage. This research is a type of engineering research. The measurement technique used is a direct and indirect measurement. The direct measurement technique is done by comparing CO level data from standard tools with measuring instruments. Indirect measurement techniques are carried out by analyzing the data. Based on the research objectives, the specifications of the work tools are the average accuracy percentage of 97.27%, and the precision of 97.31%. Based on these result, the CO gas level measuring tool has a measurement accuracy and precision of close to 100%. So it is concluded that the CO level measuring tool can work properly
Ethno-Biology Learning Model Based on Design Thinking to Improve Students' Critical Thinking Skills Linda Winiasri; Tomi Apra Santosa; Yohandri Yohandri; Abdul Razak; Festiyed Festiyed; Zulyusri Zulyusri
Jurnal Penelitian Pendidikan IPA Vol. 9 No. 9 (2023): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v9i9.4213

Abstract

This study aims to investigate the effect of an ethnobiology learning model based on design thinking on students' critical thinking skills. The research is a type of quasi-experimental research with a randomized control group pretest-postest design. The population of this study came from SMA Negeri 12 Kerinci. The research sample came from two classes, namely class XI MIPA (experimental class) and class MIPA 3 (control class) totaling 42 students. The experimental class group used the ethnobiology learning model while the control class group used the conventional learning model. The sampling technique is random sampling. The research instrument was an objective test of critical thinking skills. Data analysis was quantitative statistical analysis with the help of SPSS version 26. The results of this study showed that the average value of posttest and N-gain critical thinking skills of classes that obtained ethnobiology learning based on design thinking was better than classes that used conventional learning. The t-test results show that the ethnobiology learning model based on design thinking has an effect on critical thinking skills sig. < 0.05 (0.00 < 0.05). Students' thinking skills in the experimental class obtained an average score of 82.30 with an N-gain value of 0.72
A flamethrower mounted on UAV for kite litter clearing on high voltage transmission line Angela Widiya Pratama; Fauzan Al Haqqi; Nur Anisa Sati’at; Yohandri Yohandri
Indonesian Journal of Electrical Engineering and Computer Science Vol 34, No 1: April 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v34.i1.pp81-88

Abstract

The high voltage transmission line (HVTL) is a part of the electric power transmission system that distributes high-capacity electricity. There were numerous interruptions to the transmission line, one of which was caused by the kite getting stuck in the conductor. In the past, interference from kites on the conductor wire has been removed by crawling over it. This conventional method poses safety risks, is high-cost, and is time-consuming. This article describes the development of a flamethrower mounted on an unmanned aerial vehicle (UAV) for kite litter clearing on a high-voltage transmission line is presented. The flamethrower is fitted on the UAV to achieve high-mounted wire. The UAV was controlled using a transmitter and a receiver based on an Arduino. The flamethrower was tested for clearing a kite on the transmission line. The effect of nozzle diameter on flame burst length and the time it takes to burn a kite has been investigated. According to the experiment results, the performance of the flamethrower is highly satisfactory. Based on the component prices and manufacturing costs, the flamethrower has been successfully assembled at a low cost for a total of below $55.
PENERAPAN MODEL PEMBELAJARAN INQUIRY TRAINING UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS (KPS) IPA FISIKA SISWA KELAS VII SMP Palma Juanta; Marlince NK Nababan; Apriani Sijabat; Yohandri Yohandri; Festiyed Festiyed
Jurnal Muara Pendidikan Vol. 8 No. 1 (2023): Jurnal Muara Pendidikan, Vol 8 No 1, Juni 2023
Publisher : LPPM Universitas Muhammadiyah Muara Bungo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52060/mp.v8i1.1041

Abstract

The purpose of this study was to determine Science Process Skills (KPS) by applying the learning model to class VII materials on Temperature and Heat at Dr. Private Middle School. Wahidin Sudirohusodo for the 2022/2023 Academic Year conducted this research against the background of the low Science Process Skills (KPS) in Science for the last five years to 2021/2022, so that student learning outcomes were unsatisfactory. This was because students considered Science to be a difficult subject, especially Science Physics because it is necessary to use learning methods and models that can improve students' science process skills. This study used the classroom action research (PTK) method whose model was developed by Kemmis and McTaggart. Data collection techniques in this study used pretest and posttest test instruments with a population of 210 students spread across 7 parallel classes and one class was taken with 30 students as a sample. Data analysis using descriptive analysis was carried out by interactive analysis. The use of the inquiry training learning model has a good influence on improving science process skills. The research was conducted in pre-cycle and two cycles. In the pre-cycle with the pretest with a completeness score of only 16.67%, in the first cycle the completeness was 76.67%. Then the learning improvement was carried out again in cycle II, with inquiry training, completeness 83.33% So there was an increase in students' Science Process Skills.
Pengembangan Instrument Jumping Sideways Untuk Tes Koordinasi Pada Anak Berbasis Website Heri -Maryono; Yohandri Yohandri
Jurnal Sosioteknologi Vol. 22 No. 2 (2023): JULY 2023
Publisher : Fakultas Seni Rupa dan Desain ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/sostek.itbj.2023.22.2.2

Abstract

Identification of children’s talents in the world of sports is needed to producemaximum achievements. The talent identification program in this study focuses on acoordination test using a jumping sideways instrument. Instruments still had limitationsin measurement, data processing, and data archiving. Therefore, a website-basedjumping sideways instrument was developed. This study aims to determine the designspecifications and performance specifications of the sideways jumping instrument,which is website-based. This study is research and Development. Data collectiontechniques are carried out directly and indirectly. The result of direct measurement is thenumber of jumps, and the result of indirect measurement is the accuracy and precisionof the instrument. The first conclusion is that the performance specification consists ofa NodeMCU ESP8266, pushbuttons, an LCD, other supporting electronic components,and a website. The two design specifications consist of a proper instrument accuracy of99.6% and an accuracy of 100%.
Interactive Multimedia Development Assisted by I Spring Suite 10 Integrated SETS (Science, Environment, Technology, Society) Approach to Improve High School Students' Critical Thinking Skill Wandika; Yulkifli; Desnita; Yohandri; Siti Aisyah
Studies in Learning and Teaching Vol. 5 No. 2 (2024): August
Publisher : Indonesia Approach Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46627/silet.v5i2.412

Abstract

The aim of this research is to develop interactive multimedia assisted by Ispring suite 10 integrated with the SETS approach that is valid, practical and effective in order to advance high school students' critical thinking skills. This type of research is research and development (R&D) using the ADDIE development model. The participants were class XI students. Science at SMAN 2 Padang. The research results show: 1) Validation of interactive multimedia reaches very valid criteria; 2) The practicality of interactive multimedia is determined through learning implementation of 89.74% with practical criteria and student response questionnaires of 87.40% with practical criteria; 3) Interactive multimedia assisted by Ispring Suite 10's integrated SETS approach can increase critical thinking capabilities effectively. The novelty of this research is that teachers can apply interactive multimedia assisted by Ispring suite 10 integrated SETS approach as one way to improve students' critical thinking skills.
Akselerasi Teknologi Keolahragaan Melalui Inovasi Nurul Ihsan; Anton Komaini; Yohandri Yohandri; Yulhendri Yulhendri
Wahana Dedikasi: Jurnal PkM Ilmu Kependidikan Vol. 6 No. 2 (2023): Wahana Dedikasi : Jurnal PkM Ilmu Kependidikan
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/dedikasi.v6i2.13800

Abstract

Inovasi adalah sebuah keharusan menuju ketercapaian tujuan. Dan Inovasi perlu akselerasi yang berkesinambungan. Salah satu inovasi didapat melalui pemanfaatan teknologi dalam ilmu keolahragaan merupakan sesuatu hal yang wajib diperhatikan oleh setiap praktisi serta akademisi keloahragaan. Pengukuran merupakan salah satu aspek penting dalam setiap tahapan pembinaan olahraga. dalam pengukuran, pemanfaatan teknologi sangat dianjurkan dalam mencapai validitas data yang akurat dan tepat. selain itu, pelaksanaan tes harus pula dilakukan sesuai prosesur dan ketentuan yang terstandar, dan ini memerlukan tenaga ahli dan berpengalaman serta tersertfikasi. Hirilisasi hasil penelitian diharapkan mampu memberikan berbagai manfaat dan menjadi salah satu asset yang dapat digunakan Perguruan tinggi dalam hal pendapatan. Tujuan kegiatan ini adalah mengembangkan sebuah pusar layanan tes dan pengukuran kondisi fisik yang diharapkan mampu memberikan sumbangan nyata pada masyarakat dalam hal pemanfaatan teknologi keolahragaan. Selain itu, Kegiatan ini diharapkan mampu menjadi salah satu sector yang dapat memberikan pendapatan bagi PT. Produk yang ditawarkan dalam program ini adalah Penyewaan alat-alat keolahragaan, pelayanan tes dan pengkuruan keolahragaan dan penjualan produk-produk hasil penelitian dosen yang berkaitan produk inovasi keolahragaan. Metode kegiatan dilaksanakan dengan pola Kerjasama dan pola penjulaan langsung dan tidak langsung. Indikator keberhasilan dilihat dari pemasukan yang diperoleh selama 1 tahun pelaksanaan yang dilihat dan dilaporkan pertriwulan. BErdasarkan evaluasi serta perhitungan clasflow, diketahui program telah berhasil memperoleh benefit sesuai dengan prediksi
E-learning and Physics Teaching Materials Based on Malay Ethnoscience on the East Coast Irfandi, I.; Sudarma, T. F.; Festiyed, F.; Yohandri, Y.; Diliarosta, S.; Surahman, D.; Siregar, A. M.
Jurnal Pendidikan IPA Indonesia Vol 12, No 3 (2023): September 2023
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v12i3.45442

Abstract

This study aims to create and develop a Learning Management System (LMS) and teaching materials for General Physics courses as well as to see the effectiveness of using LMS and Ethnoscience-Based Teaching Materials for East Coast Malay Culture, which are closely related to the tradition of weaving pandan leaves as household products and decorations, in Supporting a Valid, Practical and Effective Blended Learning System. This research is included in the research and development method involving 38 students majoring in Physics. The development steps were adapted from the model developed by Thiagarajan, with the implementation stages consisting of (1) define, (2) design, (3) development, and (4) Disseminate. The findings that were obtained in the implementation of this study were that a team of students validated the instrument as a whole to obtain an average gain from cycle I 0.58 (Moderate) and then increased in cycle II 0.64 (Medium) and Cycle III at 0.73 (High). Several conclusions can be drawn that teaching materials based on ethnoscience and LMS improve student learning outcomes and, have met the criteria set for use in lectures and can be uploaded to the learning system using blended learning.
Remote Laboratory Based on the Internet of Things for E-Learning: A Development Model of Newton’s Law Experiment Asrizal, -; Khairat, Raudhatul; Yohandri, -
JOIV : International Journal on Informatics Visualization Vol 8, No 3 (2024)
Publisher : Society of Visual Informatics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62527/joiv.8.3.2241

Abstract

Remote laboratory is a development of digital technology to support the quality of learning in this digital era. However, scientific processes often cannot be accommodated in digital spaces such as e-learning. This research highlights a remote laboratory system that can accommodate scientific process improvement in e-learning.  The research objective is to develop and determine the performance of the remote laboratory system of Newton’s Law experiment based on IoT for e-learning as an experiment development model. Research methods can be classified into design and development, abbreviated as DDR. The remote laboratory system is designed and developed in six phases. This system is developed by five main components, namely, a photodiode sensor, MCU nodes, motor drivers, stepper motor, and ESP 32 CAM. The results indicate that the remote laboratory system of Newton's law experiment has demonstrated positive performance, and the accuracy and precision of measurement from the remote laboratory system are classified as high. Accordingly, the remote laboratory system of Newton's law experiment can be used as an alternative to support scientific processes in e-learning. It is expected to serve as a guide for virtual laboratory design, enlightening the audience on the potential of this system. It is used extensively for experimental teaching in modern physics education. The success in designing and developing an experimental model of Newton's law by implementing a remote laboratory based on IoT provides a good opportunity to develop various more sophisticated physics experimental systems to support the science process and e-learning.
Co-Authors - Asrizal - Asrizal - Asrizal, - - Yulkifli - Yulkifli Abdul Razak Adibil Mahdi Rahmad Hidayat Ahmad Fauzi Al Khudri Sembiring Alex Sandryadi Alfindri Zulkarnaini Ali Amran Alvissda Damai Ananda Putra Angela Widiya Pratama Angga Saputra Anggraini Anggraini Apriani Sijabat Arif Farma Putra Asrizal Asrizal Asrizal Aulia Asman Auliya Sifa Fauziyyah Bastian Wahyudi Cahyati, Mona Trisna Citra Syefriana Deski Beri Desnita Dewi Puspa Sari Dewi Puspa Sari, Dewi Puspa Diliarosta, S. Dinata, Marta Djusmaini Djamas Elfiana Lathifa Rahma Emafri, Wenda Erin Ficrah Huda Even Triaga Fanny Rahmatina Rahim Farah Sarjani Farah Sarjani Farhan El Maulid Fauzan Al Haqqi Festiyed Festiyed Festiyed Fitra Maryulis Fitri Afriani Fitri Arsih Fitri Arsih Fuja Novitra Gusnedi Gusnedi Gusnedi, - Hamdi Rifai Hanifa Yoanda Hardeli Hardeli Hary Sanjaya Hary Sanjaya Hary Sanjaya Hary Sanjaya Hasbi Azis Heri -Maryono Heron Tarigan Hufri Hufri Ilham Alimuddin Ilham Hafidzh Wijaya Inandita Mardhiyah Indang Dewata Irena Retno Damayanti Irfan Muhammad Zaqi Irfandi Irfandi Josaphat Tetuko Sri Sumantyo Joshapat T. Sri Sumantyo Khairat, Raudhatul Khairunnisa Khairunnisa Komaini, Anton Kurnia Ashadi Laila Suryani Lily Handayani Linda Winiasri Maisa Fitri Marlince NK Nababan Marlince NK Nababan Minda Azhar Minda Azhar Mirza Muhammad Waqar Mitri Selisne Moulia Fadhilah Muhammad Gani Ariski Muhammad Irsyad Muhammad Rahfiqa Zainal Naurah Nazhifah Nilam Nilam Nofi Yendri Sudiar Nur Anisa Sati’at Nurhafizah Nurhafizah Nurhasanah Nurhasanah Nurhasnah, Nurhasnah Nurul Ihsan Palma Juanta Palma Juanta Puti Aulia Mardiah Putra, Ananda Putri Ayu Putri Yuliana Mahardika Putri, Yosa Aulya Rahadian Zainul Rahma Sari Rahma, Mila Devita Rahmat Dito Tri Wicaksono Rahmatul Fitria Rahmi Sukmawati Ramli Ramli Ramli Ramli Ramli Ramli Ramli, - Raudhah Awal Ridho Pratama Rikizaputra Rikizaputra Rio Anshari Risa Noviarti Robby Zeffry Robika Alkadri Roza, Media S. Solheri Sari, Yulis Septianas Selisne, Mitri Siltri, Dina Mulya Silvi Yulia Sari Siregar, A. M. Siti Aisyah Suci Ramadhani Sudarma, T. F. Surahman, D. Syafriani Syafriani Syufrawardi Syufrawardi Tomi Apra Santosa Ulfa Fadhilah Ulianas, Alizar Umar Kalmar Nizar Usmeldi Usmeldi Venezia Ferly Wiranda Viskia Manelza Vivi Wulandari Vivi Wulandari Wahyuni Satria Dewi Wahyunita Wulandari Wandika Wenda Emafri winni suhadi Yenni Darvina Yohanna Dasriyani Yohanna Dasriyani Yosi Dwi Anggreni Yulhendri Yulhendri Yulis Septianas Sari Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli Yulkifli YUNALDI YUNALDI Yurnetti Yurnetti Zulhendri Kamus Zulpadrianto Z Zulyusri Zulyusri Zurian Affandi