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All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Keteknikan Pertanian Jurnal Sains dan Teknologi TELKOMNIKA (Telecommunication Computing Electronics and Control) GRADIEN Jurnal Fisika Unand WARTA ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JOURNAL ONLINE OF PHYSICS JPSE (Journal of Physical Science and Engineering) Panrita Abdi - Jurnal Pengabdian pada Masyarakat Spektra: Jurnal Fisika dan Aplikasinya Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Jurnal Pendidikan Fisika dan Teknologi Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Indonesian Physical Review Jurnal Kumparan Fisika Al-Khidmat : Jurnal Ilmiah Pengabdian Kepada Masyarakat Abdi Dosen : Jurnal Pengabdian Pada Masyarakat Indonesian Journal of Electrical Engineering and Computer Science Jurnal Pengabdian Masyarakat Asia Yumary: Jurnal Pengabdian kepada Masyarakat Jurnal Inovasi Pengabdian Masyarakat Pendidikan PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Indonesian Journal of Community Empowerment and Service
Riska Ekawita
Universitas Bengkulu
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Journal : Indonesian Physical Review

 1 
LEVERAGING THE UBIQUITOUS GPS SENSOR ON THE SMARTPHONES FOR ACCESSIBLE LAND SURVEYING Habibullah, Ahmad Dhuha; Yuliza, Elfi; Almadi, Ismail Fahmy; Intara, Yazid Ismi; Ekawita, Riska
Indonesian Physical Review Vol. 8 No. 2 (2025)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v8i2.361

Abstract

The Global Positioning System (GPS) is an essential tool in land surveying. GPS has become an alternative method of surveying that requires less manpower and less time. However, GPS devices are still expensive to buy, especially for students. On the other hand, almost every student has a smartphone with a built-in GPS sensor, so this GPS is certainly accessible to everyone with a smartphone. This study used a smartphone's GPS to conduct land surveying at the campus of Bengkulu University. This smartphone’s GPS was used to track various parameters such as coordinates, elevation, and distance between two or more points to calculate the area within the study area. The innovative method of using the built-in GPS sensor in smartphones will provide convenience for users and introduce simplified open-source software for the land measurement process. The measurement was calibrated using a conventional roll meter to verify the linear error by comparing the two measurements between the smartphone’s GPS and roll meter. The smartphone’s GPS reading was logged using GPS Waypoints and My Tracks, free Android applications on the Google Play store. This study's average error in measurements obtained using GPS on smartphones was 3.02%. This value is sufficient for the initial stage of low-cost land surveys and falls within ideal conditions for GPS measurements. Therefore, this article emphasizes the potential of smartphone GPS to optimize techniques in education and scientific investigations.
PHYSICAL DISTANCING ALARM SYSTEM BASED ON PROXIMITY SENSOR AND MICROCONTROLLER Yuliza, Elfi; Ekawita, Riska; Vionita, Vionita; Fauzi, Muhammad Khafid; Sari, Vera Fuspita; Rahmayanti, Handika Dany
Indonesian Physical Review Vol. 4 No. 2 (2021)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v4i2.85

Abstract

Keeping an interaction distance between 1 to 2 m is one of the health protocols during the COVID-19 pandemic. This attempt was made to reduce the spread of the Coronavirus. On the other hand, this health protocol activity is often overlooked, whether intentionally or not. According to the mechanism of the Coronavirus spreading in the form of droplets that comes out during communication, sneezing, or coughing, maintaining distance can be the best effort to minimize the transmission of this virus. Therefore, the availability of a simple, accurate and user-friendly physical distancing alarm system could be a solution in the implementation of this health protocol. In this study, a prototype of a physical distancing alarm based on a distance sensor and a microcontroller in the form of an identity card was developed. Several steps are conducted in developing of this system, namely designing the instrumentation system and testing the performance of the system. System performance is tested through variations in the distance and angle of the objects. The measurement results show that the system can detect objects in front of the sensor up to a distance of 2.8m and an angle of  for a distance of 1m. The measurement using different angles of objects was performed for objects on the left and right sides of the sensor. In addition, a warning alarm will be on when the distance of the object exceeds the allowed distance.  
COMPARISON OF INFRARED AND OPTOCOUPLER SENSORS PERFORMANCE FOR LAB-SCALE RPM MEASUREMENT SYSTEM Afifah Amatullah, Elin Nur; Ekawita, Riska; Yuliza, Elfi
Indonesian Physical Review Vol. 5 No. 2 (2022)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v5i2.150

Abstract

In utilizing various alternative energy, generators are used to convert alternative energy into electrical energy, for example, biomass, wind, and hydroelectricity. Generally, the measurements made on the generators are rotational speed measurements in the form of revolutions per minute (RPM). In developing lab-scale alternative power sources, the availability of generators with complete quality and specifications is still minimal, including RPM capacity. Therefore, the measurement which can read the RPM accurately, digitally, and automatically is needed. However, the measurement tools available are still manual, not automatic, and prone to parallax errors. Hence, a digital and automatic RPM measurement was developed in this study. Two different sensors were used to develop digital RPM based on a microcontroller. The stages obtained started with electronic system development, calibration, and testing of lab-scale renewable energy systems. The measurement can be read from the infrared and optocoupler sensors on the Archimedes turbine. The measurement results showed that the use of the Optocoupler sensor is more accurate than the infrared sensor. This is based on the data obtained from calibration and testing results on the Archimedes turbine. This RPM measurement is digital and real-time.
Co-Authors Afifah Amatullah, Elin Nur Agustin, Rika Amelia Alfando, Andre Almadi, Ismail Fahmy Anggria, Della Cici anjasman, anjasman Bangun, Abel Melido Chandra Kurniawan Dari, Evita Sri Wulan Devi Permata Sari Elfi Yuliza Elfi Yuliza Endah Rahmawati Farid, Mochammad Fauzi, Hera Wahyu Fauzi, Muhammad Khafid Gunawan, Nur Aini Habibullah, Ahmad Dhuha Irkhos Johan, Septi Khairurrijal Khairurrijal Laksono, Tsaqif Maulana A. Lestari, Resma Puji Lestari, Widya Novia Lizalidiawati Lizalidiawati MAHDALYA, ELLIN ERNITA Maman Budiman Melisa, Wery Mikrajuddin Abdullah Muda Lubis, Ashar Muhammad Yuliansyah Putra Mutia Raudhatul Zahra Nasution, Ahmad Azmi Nolla Kusumawardani Okta Sari Rahmat Awaludin Salam Rahmayanti, Handika Dany Refrizon Rendi Dwi Prasetyo Rida Samdara Rida Samdara SAGALA, MONAESA Saputra, Rahmat Sari, Vera Fuspita Shalih Muhammad Abdul Azhim SIHOMBING, YOSIA PANDU Sipriyadi Suardi, Nursakinah Sudirman Sudirman Suhendra SULISTIANI, EVI Sultan Nanda Alamsyah Supiyati . Suwarsono Suwarsono Suwarsono Suwarsono Ulandari, Tresi Pitria Vionita, Vionita Wery Melisa Yazid Ismi Intara Yazid Ismi Intara Yosia Pandu S Zafran Afif