Articles
<![CDATA[Penentuan Frekuensi Osilasi pada Dua Pendulum Terkopel Menggunakan Arduino Uno dengan Sensor Ultrasonik ]]>
<![CDATA[Abdul Muis Habib]]>;
<![CDATA[Yudhiakto Pramudya]]>
<![CDATA[ Jurnal Fisika Unand Vol 10 No 1 (2021) ]]>
Publisher : <![CDATA[Universitas Andalas ]]>
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DOI: 10.25077/jfu.10.1.15-21.2021
<![CDATA[Penelitian ini bertujuan untuk menentukan nilai frekuensi osilasi pada dua pendulum terkopel menggunakan Arduino Uno dengan sensor ultrasonik. Gerak osilasi pendulum yang berbeda yaitu pada gerak sefase dan beda fase. Sensor ultrasonik dihubungkan pada board Arduino Uno yang kemudian dihubungkan pada PC menggunakan kabel USB. Proses pengambilan data dimulai dengan menggerakkan pendulum secara sefase dan menekan tombol conect pada aplikasi PLX-DAQ untuk memperoleh data yang secara otomatis akan ditampilkan pada microsoft excel. Selanjutnya, data yang diperoleh dilakukan analisis fitting data, kemudian hasilnya di-plot dalam bentuk grafik. Hasil menunjukkan perbedaan nilai frekuensi osilasi pada perbandingan pengukuran menggunakan tracker dan sensor ultrasonik. secara eksperimen menggunakan tracker, nilai ω sebesar 4,62 Hz dan secara teori nilai ω sebesar 5,66 Hz dengan ralat 18,4 %. Sedangkan pada sensor ultrasonik diperoleh nilai ω secara eksperimen sebesar 4,95 Hz dan secara teori sebesar 5,66 Hz dengan ralat 12,55%. Perbandingan pengukuran tersebut dapat dilihat bahwa nilai ω secara eksperimen menggunakan sensor ultrasonik lebih besar atau mendekati pada nilai ω secara teori. Artinya pengukuran frekuensi osilasi dengan menggunakan sensor ultrasonik juga memiliki tingkat akurasi yang baik sehingga layak digunakan dalam eksperimen osilasi terkopel. This study aims to determine the value of the oscillation frequency in two coupled pendulums using Arduino Uno with an ultrasonic sensor. The different pendulum oscillations are in phase and phase difference. The ultrasonic sensor is connected to the Arduino Uno board which is then connected to the PC using a USB cable. The data collection process begins by moving the pendulum in phases and pressing the connect button on the PLX-DAQ application to obtain data which will automatically be displayed on Microsoft Excel. Furthermore, the data obtained were analyzed using a fitting data analysis, then the results were plotted in graphical form. The results show the difference in the value of the oscillation frequency in the comparison of measurements using a tracker and ultrasonic sensor. experimentally using a tracker, the value of ω is 4.62 Hz and in theory, the value of ω is 5.66 Hz with an error of 18.4%. While the ultrasonic sensor obtained an experimental ω value of 4.95 Hz and theoretically 5.66 Hz with 12.55% error. Comparison of these measurements can be seen that the value of ω experimentally using an ultrasonic sensor is greater or closer to the value of ω in theory. This means that the measurement of oscillation frequency using an ultrasonic sensor also has a good level of accuracy so it is suitable to be used in coupled oscillation experiments.]]>
<![CDATA[Telaah Produk Monograf dari Hasil Simulasi dan Visualisasi Gelombang 2D dan 3D pada Membran Lingkaran dengan Software Scilab ]]>
<![CDATA[Dwi Nova Siti Handayani]]>;
<![CDATA[Yudhiakto Pramudya]]>;
<![CDATA[Suparwoto Suparwoto]]>
<![CDATA[ Jurnal Penelitian Pembelajaran Fisika Vol 11, No 1 (2020): April 2020 ]]>
Publisher : <![CDATA[Universitas PGRI Semarang ]]>
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DOI: 10.26877/jp2f.v11i1.4025
<![CDATA[This study aims to produce the monograph of the simulation and visualization of 2D and 3D wave on the circular membrane with Scilab Software for Physics and Physics Education students. The research method used was experimental research which produced a reference book in the form of a research monograph. This monograph was validated by physics education lecturers, educators,and physics education students. Data collection techniques were carried out by collecting questionnaires in the form of expert validation sheets (material and media), educator / lecturer response sheets, and student response sheets. The data obtained from the validation test are in the form of a percentage of the validity of the monograph from the validation of two material experts and two media experts, the average score are 91% and 90%. The monograph test by three educators and the response test by 15 students the average score are 89% and 88%. The results of the validation test of the material expert, media expert, educators response, and the response of the students are the very good so that it can be concluded that the monograph product can be used as a learning media in the form of reference books in vibration and wave learning.]]>
<![CDATA[Numerical Study of Motion of a Cylinder Filled with Water on an Inclined Plane using Scilab ]]>
<![CDATA[Marini Amalia Ocvianti]]>;
<![CDATA[Yudhiakto Pramudya]]>;
<![CDATA[Moh Irma Sukarelawan]]>
<![CDATA[ Jurnal Fisika dan Aplikasinya Vol 17, No 3 (2021) ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS ]]>
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DOI: 10.12962/j24604682.v17i3.8853
<![CDATA[The velocity of the rolling motion is influenced by the shape of the object and its rotating axis. The cylinder motion on inclined plane has been investigated by number of research. However, the water filled cylinder need to be investigated further especially on the possibility moving sliding and rolling. Numerical study has been carried out on water filled cylinder modelling of frictionless sliding motion of point object, frictionless rolling motion, and rolling motion with friction on an inclined plane. By using the Euler method, data processing is carried out with the Scilab application. The resulting graph from running Scilab coding is a graph of v vs t and x vs t. We found the frictionless sliding motion produces the greatest velocity and distance because it is not influenced by friction and the object’s moment of inertia. Solid cylinder rolling with friction on an inclined plane produces the smallest velocity and distance due to the influence of friction and the moment of inertia of the object. These results indicate that a water filled cylinder can be considered a solid cylinder if ignoring all internal motion of water inside the cylinder.]]>
<![CDATA[Strategi Wisata Observatorium UAD Saat Pandemi Covid-19 ]]>
<![CDATA[Arfiani Nur Khusna]]>;
<![CDATA[Yudhiakto Pramudya]]>;
<![CDATA[Ulinnuha Yudiansa Putra]]>
<![CDATA[ Prosiding Seminar Nasional Program Pengabdian Masyarakat 2020: 11. Teknologi Informasi dalam Pemberdayaan Masyarakat ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Yogyakarta ]]>
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DOI: 10.18196/ppm.311.175
<![CDATA[Observatorium UAD merupakan salah satu destinasi wisata edukasi yang berlokasi di Universitas Ahmad Dahlan (UAD) dan dikelola oleh Pusat Studi Astronomi (Pastron) UAD. Observatorium UAD merupakan tempat untuk melakukan pengamatan dan penelitian tentang tata surya oleh civitas akademika, sesuai dengan perkembangannya kemudian dibuka untuk umum menjadi wisata edukasi. Saat pemerintah menerapkan peraturan pembatasan mobilitas masyarakat sebagai antisipasi penyebaran Covid-19, Observatorium UAD terkena imbasnya dengan penutupan akses layanan kunjungan. Pengelolaan strategi wisata sepatutnya mendapat dukungan dari berbagai pihak karena wisata dapat mempengaruhi perekonomian masyarakat. Permintaan masyarakat yang cukup tinggi agar observatorium UAD tetap dapat hadir memberikan layanan dan wawasan tentang astronomi sehingga dibutuhkan langkah strategis di saat pandemi Covid-19, dengan berbagai kegiatan wisata virtual, yaitu live webinar melalui zoom atau google meet yang terekam di youtube melalui zoom atau google meet yang terekam di youtube dan mengoptimalkan media sosial yaitu instagram dan twitter. Tujuan kegiatan wisata virtual untuk tetap menghadirkan layanan observatorium di kalangan masyarakat dan mampu memberikan pengalaman kepada wisatawan. Peningkatan keikutsertaan masyarakat dalam wisata virtual sangat antusias, dilihat dari daftar peserta mencapai 300 orang dan peningkatan subcribe youtube dari 43 subcriber menjadi 133 subcriber, kepuasan peserta juga terukur dalam kuisioner dengan tingkat kepuasan mengikuti webinar sebesar 90%.]]>
<![CDATA[Pemanfaatan Metode Moving Average dalam Menentukan Awal Waktu Salat Subuh Menggunakan Sky Quality Meter (SQM) ]]>
<![CDATA[Abu Yazid Raisal]]>;
<![CDATA[Yudhiakto Pramudya]]>;
<![CDATA[Okimustava ,]]>;
<![CDATA[Muchlas ,]]>
<![CDATA[ Al-Marshad: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan Vol 5, No 1 (2019) ]]>
Publisher : <![CDATA[University of Muhammadiyah Sumatera Utara ]]>
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DOI: 10.30596/jam.v5i1.3121
<![CDATA[The beginning of prayer time is important for Muslims because Islam advocates for prayer at the beginning of time. The beginning of Zuhr, Asar and Maghrib prayer times can be done by looking position of the Sun directly. However, the position of the sun cannot be directly observed to determine the beginning of the Fajr and Isha prayer times, because the Sun is below the horizon. The beginning of the Fajr prayer time can be determined by measuring sky brightness using the Sky Quality Meter (SQM). Many factors can affect SQM in collecting light so that the data is not separated from noise. The use of the moving average method reduces noise, making it easier to determine the beginning of the Fajr prayer time using SQM.]]>
<![CDATA[PENGEMBANGAN ALAT PERAGA BINTIK MATAHARI MENGGUNAKAN LED BERBASIS ARDUINO ]]>
<![CDATA[Yoky Novra Silta]]>;
<![CDATA[Yudhiakto Pramudya]]>
<![CDATA[ Spektra: Jurnal Fisika dan Aplikasinya Vol 2 No 3 (2017): SPEKTRA: Jurnal Fisika dan Aplikasinya, Volume 2 Nomor 3, Desember 2017 ]]>
Publisher : <![CDATA[Program Studi Fisika Universitas Negeri Jakarta ]]>
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DOI: 10.21009/SPEKTRA.023.05
<![CDATA[Abstrak Bintik matahari yang terjadi dalam kehidupan sehari-hari merupakan hal menarik untuk divisualisasikan melalui alat peraga dalam proses belajar menganjar. Alat peraga bintik matahari menggunakan software Arduino dilengkapi oleh lampu LED pada alat peraga tersebut. Perhitungan periode rotasi diketahai melalui jejak-jejak bintik matahari sehingga dapat divisualisasikan oleh alat peraga bintik matahari berdasarkan data tanggal jejak bintik matahari tersebut. Peneliti membatasi tanggal jejak bintik matahari selama 8 hari terhitung dari tanggal 6 Oktober 2016 sampai 13 Oktober 2016. Penggabungan jejak bintik matahari dari tanggal 6 Oktober 2016 sampai 12 Oktober 2016 (7 hari) dan tanggal 7 Oktober 2016 sampai 13 Oktober 2016 (7 hari) menghasilkan data I dan data II. Perhitungan hasil periode rotasi matahari pada data A dan data B adalah sama 28 hari sehingga divisualisasikan kedalam alat peraga bintik matahari. Alat peraga beroperasi dengan baik terlihat dari lampu LED pada alat peraga menyala/mati sesuai perintah program Arduino dengan tampilan serial monitor. Kata-kata kunci: Alat Peraga, Bintik Matahari, Arduino Abstract Sunspots in daily life is an interesting object to be visualized into an instrument applied in the teaching and learning process. The sunspots instrument applied Arduino software completed with LED light. The calculation of the periodic of rotation was discovered through the sunspots traces, so that it could be visualized by the sunspots instrument based on the sunspots traces. The researcher limited the date of the sunspots traces into 8 days ,started from October, 6th 2016 until October, 13th 2016. The merging of sunspots traces started from October 6th 2016 until October 12th 2016 ( 7 days) and at the date of October 7th 2016 until October 13th 2016 (7 days ) produced data I and data II. The calculation result of the sun periodic of rotation were equally 28 days, so that it could be visualized into the sunspots instrument. The instrument was successfully operated, indicated from the LED light which was turning on and off accordingly to the instructions of the Arduino program with the display of serial monitor.Keywords : Instrument, Sunspots, Arduino Keywords: Instrument, Sunspots, Arduino]]>
<![CDATA[IMPLEMENTASI SISTEM PENGOLAHAN DATA SKY QUALITY METER BERBASIS VISUAL BASIC UNTUK ANALISIS PERUBAHAN TINGKAT KECERAHAN LANGIT ]]>
<![CDATA[Mustofa Ahyar]]>;
<![CDATA[Yudhiakto Pramudya]]>;
<![CDATA[Okimustava Okimustava]]>
<![CDATA[ Jurnal Kumparan Fisika Vol 3, No 3: Desember 2020 ]]>
Publisher : <![CDATA[Unib Press, Universitas Bengkulu ]]>
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DOI: 10.33369/jkf.3.3.239-246
<![CDATA[Polusi cahaya sangat berpengaruh terhadap kecerahan langit. Tingkat kecerahan langit dapat diukur dengan Sky Quality Meter (SQM). Hasil data SQM sangat banyak, perlu aplikasi untuk mempermudah pengolahan datanya. Fitur Visual Basic Microsoft Excel dapat membantu pengolahan data SQM. Penelitian menggunakan metode observasi tingkat kecerahan langit dengan SQM. Analisis data menggunakan metode moving average. Pengembangan perangkat lunak menggunakan model waterfall dengan lima tahapan permodelan, yaitu: analisis, desain, implementasi, pengujian, dan perawatan. Model pengembangan waterfall mampu untuk membuat sistem pengolahan data SQM, data dengan berbagai kolom dapat dipilih secara otomatis dan cepat sehingga dapat dibuat grafik tingkat kecerahan langit terhadap waktu.Light pollution dramatically affects the brightness of the sky. Sky brightness level can be measured using Sky Quality Meter (SQM). SQM data results are huge data. It needs an application to facilitate data processing. Microsoft Excel Visual Basic features can assist the SQM data processing. The study used observational methods of sky brightness with SQM. Data analysis using the moving average method. Software development used the waterfall model with five stages of modeling, namely: analysis, design, implementation, testing, and maintenance. The waterfall development model was able to create an SQM data processing system. The data with various columns can be selected automatically and quickly. Hence, it is able to graph the level of sky brightness versus time.]]>
<![CDATA[GERAK SILINDER PADA BIDANG MIRING DALAM AIR DENGAN VARIASI KETINGGIAN AIR ]]>
<![CDATA[Deidra Robertha Anggraeny Noel]]>;
<![CDATA[Yudhiakto Pramudya]]>;
<![CDATA[Moh. Irma Sukarelawan]]>;
<![CDATA[Reza Ariefka]]>
<![CDATA[ Jurnal Kumparan Fisika Vol. 5 No. 1: April 2022 ]]>
Publisher : <![CDATA[Unib Press ]]>
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DOI: 10.33369/jkf.5.1.37-42
<![CDATA[ABSTRAK Silinder pejal yang menggelinding di atas bidang miring akan mengalami dua gerak sekaligus, yakni gerak rotasi dan translasi. Gerak rotasi terhadap sumbu silinder pejal dan gerak translasi terhadap bidang miring yang dilalui. Dinamika gerak rotasi dan translasi pada bidang miring menjadi kompleks saat silinder pejal bergerak 2 medium yang berbeda kerapatannya. Penelitian ini merupakan eksperimen di laboratorium untuk menentukan profil jarak terhadap waktu dan kecepatan terhadap waktu untuk gerak silinder pada bidang miring dalam air dengan variasi ketinggian air. Pengambilan data dilakukan menggunakan perekaman video dengan variasi ketinggian air pada saat silinder pejal menggelinding pada bidang miring, lalu video tersebut dipindahkan ke laptop untuk di-tracking menggunakan software tracker. Data yang diperoleh dari hasil tracking tersebut kemudian dibuat grafik profil jarak terhadap waktu dan profil kecepatan terhadap waktu. Pada hasil analisis data selain menghasilkan profil jarak terhadap waktu dan kecepatan terhadap waktu juga memperoleh pengaruh variasi ketinggian air pada profil jarak terhadap waktu dan kecepatan terhadap waktu. Semakin tinggi air, maka semakin pendek lintasan yang ditempuh oleh silinder. Perubahan kecepatan silinder cenderung tidak linear bila ketinggian air tidak tinggi karena gaya gesekan dengan lintasan mulai membesar. Silinder bergerak dengan kecepatan hampir konstan pada saat di dalam air. Kata kunci— Silinder pejal, software tracker, bidang miring, air ABSTRACT A solid cylinder that rolls on an inclined plane will experience two motions at once, namely rotational and translational motion. Rotational motion about the axis of a solid cylinder and translational motion about the inclined plane traversed. Rotational and translational motion dynamics on inclined plane become complex as a solid cylinder move inside two different mediums that has different density. This research is an experimental research in the laboratory to determine the profile of distance and velocity versus time of cylinder on an inclined plane in water with variations in water level. Data retrieval is done using video recording with variations in water level when a solid cylinder rolls on an inclined plane, then the video is transferred to a laptop for tracking using tracker software. The data are plotted to obtain graph of distance and velocity profile In the results of data analysis, in addition to producing a profile of distance against time and speed with respect to time, it also obtained the effect of variations in water level on the profile of distance against time and speed with respect to time. Higher the water height, shorter the cylinder path. The changes of cylinder speed tend to be non-linear if the height of water is low. This is due to the drag force with the track start to increase. Cylinder move with the speed almost constant under water. Keywords— Solid cylinder, tracker software, inclined plane, water]]>
<![CDATA[Studi Awal Sonifikasi Pada Data Gerak Parabola Berbantuan Arduino Uno R3 Atmega328 ]]>
<![CDATA[Yudhiakto Pramudya]]>;
<![CDATA[Riza Hayyuningtias]]>
<![CDATA[ JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol 6 No 1 (2022): May Edition ]]>
Publisher : <![CDATA[Program Studi Pendidikan Fisika STKIP Nurul Huda ]]>
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DOI: 10.30599/jipfri.v6i1.1483
<![CDATA[Parabolic motion is the typical phenomenon in classical mechanics. The students are able to understand the concept by reading the data in the parabolic function. However, there is limited material for visual impaired students to study the parabolic motion data. One of the solutions to overcome this problem is the parabolic motion experiment development using sonification method. Research has been carried out to analyze the accuracy of the frequency produced by the speakers in data conversion assisted by Arduino Uno. The research also analyzes the effect of elevation angle variations on the resulting frequency changes. The data collection process is carried out by analyzing the percentage of accuracy using the average technique of the data recorded by the Phyphox application. The data analysis of the Phyphox application is compared with the data obtained from the Tracker application. From the results of data analysis obtained the percentage value of the velocity for the angle 30o, 45o, and 70o were 99.92%, 99.67%, and 98.42%, respectively. Therefore, it can be said that the preliminary sonification study is feasible to be used in physics experiments on parabolic motion learning, especially for visual impaired students. The final plotting result of this research shows that the frequency versus time at each angle produces a graph in the parabolic form. While the effect of angle variations on frequency changes is that the larger the angle, the slower it will reach the peak frequency.]]>
<![CDATA[Measurement Eccentricity the Moon’s Orbit with Image Analysis Technique by Using Tracker Software ]]>
<![CDATA[Ricka Tanzilla]]>;
<![CDATA[Ishafit Jauhari]]>;
<![CDATA[Yudhiakto Pramudya]]>
<![CDATA[ Indonesian Review of Physics (IRiP) Vol. 1 No. 1 (2018) ]]>
Publisher : <![CDATA[Universitas Ahmad Dahlan ]]>
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DOI: 10.12928/irip.v1i1.258
<![CDATA[One of the interesting physical phenomenon to be studied is about eccentricity of the Moon's orbit on the movement of the Earth and the Moon as explained in Kepler's Law. In order to explain the phenomenon,several research has been done to determine the measurement accuracy of Moon disk diameter using Trackers and to know the result of the eccentricity value in the application of Kepler's Law. This research can produce eccentricity values accordance with the application of Kepler’sLaw. The research method used is Image Analysis Techniqueassisted with Tracker. The result of this research shows that the eccentricity value obtained is 0.07 ± 0.01. This is in accordance with Kepler's first Law which stated that orbits of each planet and satellite is an ellipse and has an eccentricity value of 0 <e <1. The value of eccentricity obtained has accuracy of 22%,if it compared with the actual value.Whereas, if it compared with the value of ephemeris then the value of accuracy is 8%.]]>
