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All Journal Journal of Telematics and Informatics ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Jurnal Elektronika dan Telekomunikasi Eksakta : Berkala Ilmiah Bidang MIPA Jambura Journal of Electrical and Electronics Engineering Abdimas Toddopuli: Jurnal Pengabdian Pada Masyarakat Pillar of Physics: Jurnal Berkala Ilmiah Fisika Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Jurnal Pengabdian Masyarakat Bangsa
Bavitra, Bavitra
Maritim Raja Ali Haji University
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Estimasi kedalaman batuan dasar menggunakan metode inversi robust 2-D data geolistrik tahanan jenis konfigurasi dipole dipole di Bukit Apit Puhun Kecamatan Guguk Panjang Kota Bukittinggi (The estimation of the depth of the bedrock uses a robust 2-D inversion method of resistivity geoelectric data with a dipole dipole configuration at Bukit Apit Puhun, Guguk Panjang District, Bukittinggi City) - Bavitra; - Akmam; Harman Amir
PILLAR OF PHYSICS Vol 6 (2015)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (732.473 KB) | DOI: 10.24036/1930171074

Abstract

Bukit Apit Puhun Bukittinggi area is located at Sianok fault zone. This area was potensially occur tectonic activity such as earthquakes. Tectonic activity could disturb the stability of the bedrock. The aim of this research was to determine the resistivity and to depth of basement bedrock in Bukit Apit Puhun Bukittinggi area. This research used Robust 2D inversion Geoelectrical data with Dipole-dipole configuration. The Data of this research were taken five track using ARES (Automatic Resistivitymeter). The data were processed and interpreted with using Robust 2D inversion. The result of this research showed that type of basement bedrock in Bukit Apit Puhun Guguk Panjang was an igneous groups, namely Andesite. Resistivity of Andesite bedrock were varies on the each track. The resistivy of Andesite was 352 Ωm – 7598 Ωm. Depht of Andesite bedrock were varies, which generally more than 30 meters deepness at Bukit Apit Puhun Bukittinggi area
PENENTUAN KEDALAMAN BATUAN DASAR MENGGUNAKAN METODE GEOLISTRIK TAHANAN JENIS DENGAN MEMBANDINGKAN KONFIGURASI DIPOLE-DIPOLE DAN WENNER DI BUKIT APIT PUHUN KECAMATAN GUGUK PANJANG KOTA BUKITTINGGI Harman Amir; Akmam Akmam; Bavitra Bavitra; Mia Azhari
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 18 No. 01 (2017): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (662.328 KB) | DOI: 10.24036/eksakta/vol18-iss01/13

Abstract

Pemberdayaan Petani dalam Optimalisasi Tata Guna Air Melalui Program Percepatan Peningkatan Tata Guna Air Irigasi (P3TGAI) Ilva YR, Habrio; Bavitra, Bavitra
Jurnal Pengabdian Masyarakat Bangsa Vol. 2 No. 12 (2025): Februari
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v2i12.2068

Abstract

Kegiatan pengabdian ini bertujuan meningkatkan pemahaman dan keterlibatan masyarakat, khususnya petani, dalam pengelolaan dan pemanfaatan sistem irigasi yang efektif. Program ini dilaksanakan melalui serangkaian metode yang meliputi sosialisasi, musyawarah desa dan pelaksanaan program. Program ini dilaksanakan di D.I.R. Kempas Jaya, Kelurahan Kempas Jaya, Kecamatan Kempas, Kabupaten Indragiri Hilir, Provinsi Riau. Hasil kegiatan berupa 1) terbentuknya Perkumpulan Petani Pemakai Air (P3A) Kempas Gemilang di D.I.R. Kempas Jaya, Kelurahan Kempas Jaya, Kecamatan Kempas, Kabupaten Indragiri Hilir, Provinsi Riau, 2) kegiatan perbaikan jaringan irigasi guna mengembalikan fungsi dan pelayanan irigasi seperti semula, 3) Peningkatan jaringan irigasi, merupakan kegiatan meningkatkan fungsi dan kondisi jaringan irigasi yang sudah ada atau kegiatan menambah luas  areal  pelayanan pada jaringan irigasi  yang  sudah  ada  dengan  mempertimbangkan  perubahan  kondisi lingkungan daerah irigasi.
Studi Komparasi Sensor Kelembapan Tanah Menggunakan ESP32 Bavitra; Leo Anaris Sakti; Dimas Saputra; Zaki Ihwan; Baharudin; Muhammad Abiyyu Alharits
JURNAL RISET RUMPUN ILMU TEKNIK Vol. 4 No. 1 (2025): April : Jurnal Riset Rumpun Ilmu Teknik
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurritek.v4i1.5292

Abstract

Soil moisture is a crucial factor in agriculture that affects plant growth and crop productivity. In modern agricultural systems, accurate soil moisture monitoring is essential for optimizing water usage and enhancing the efficiency of automatic irrigation systems. This study aims to develop an Internet of Things (IoT)-based soil moisture monitoring system and evaluate the performance of three types of soil moisture sensors: Soil Moisture FC-28, Capacitive Soil Moisture Sensor, and Soil Moisture Hygrometer Module Sensor. The evaluation compares the accuracy and effectiveness of each sensor in measuring soil moisture. The research methodology involves measuring soil moisture in ten different soil samples using the three sensors simultaneously. The system is based on the ESP32 microcontroller, where data from the sensors are processed and displayed on an LCD Liquid Crystal I2C 20x4. Data analysis is conducted using the one-way ANOVA statistical method to determine whether there are significant differences among the measurement results of the three sensors.The results indicate that each sensor exhibits different measurement characteristics based on its working principle. The Soil Moisture FC-28 sensor, which operates on resistance, shows high sensitivity to changes in soil moisture but is susceptible to corrosion. The Capacitive Soil Moisture Sensor is more durable as it does not have direct contact with the soil, yet it requires more precise calibration. Meanwhile, the Soil Moisture Hygrometer Module Sensor provides more stable results under various environmental conditions. The one-way ANOVA analysis reveals no significant differences in the measurement results among the three sensors.
Development of an IoT-Based Tidal Gauge With Ultrasonic Sensors Alajuri, M Hasbi Sidqi; Kusuma, Hollanda Arief; Bavitra, Bavitra; Harahap, Basyaruddin Ismail
Jambura Journal of Electrical and Electronics Engineering Vol 7, No 2 (2025): Juli - Desember 2025
Publisher : Electrical Engineering Department Faculty of Engineering State University of Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjeee.v7i2.29143

Abstract

Tides are the periodic rise and fall of sea levels caused by the gravitational effects of the moon and the sun. This tidal phenomenon can be measured manually or automatically using instruments. The objective of this study is to design and develop a tide gauge instrument using the JSN-SR04T sensor based on the Internet of Things (IoT). The research method includes hardware design, electrical design, firmware development, and dashboard creation. Once the system design is completed, the components are assembled. Functional and laboratory tests are conducted to ensure that each component operates properly, followed by field testing. The tide gauge instrument is capable of operating for 7 days with good accuracy in the measurement range of 25 cm to 200 cm (with an error between 0.02 and 0.16 cm). Field observations indicate that the type of tide corresponds to previous studies, which is a mixed tide. The DS18B20 sensor produced temperature readings that matched those of a standard thermometer.Pasang surut merupakan gerak naik turun muka air laut secara periodik yang disebabkan oleh efek gravitasi bulan dan matahari. Fenomena pasang surut ini bisa diukur secara manual dan otomatis menggunakan instrumen. Tujuan penelitian ini yaitu membuat rancang bangun instrumen pengukur pasang surut dengan sensor JSN-SR04T berbasis IoT. Metode penelitian dimulai dari perancangan hardware, perancangan electrical, perancangan firmware, dan perancangan dashboard. Setelah perancangan sistem selesai maka dilakukan perakitan komponen. Uji fungsionalitas dan uji laboratorium dilakukan untuk memastikan setiap komponen berfungsi dengan baik. selanjutnya, diakukan uji lapangan. Instrumen pasang surut ini dapat bekerja selama 7 hari dengan akurasi yang baik pada rentang pengukuran 25 cm hingga 200 cm (Error 0.02 hingga 0.16). Berdasarkan hasil pengamatan di lapangan menunjukkan bahwa jenis pasang surut sesuai dengan peneliti sebelumnya yaitu campuran. Hasil pengukuran sensor DS18B20 memiliki nilai suhu yang sama dengan pengukuran termometer.   
Blue Energy for a Green Future: Eksplorasi Energi Terbarukan Laut untuk Mendukung SDGs melalui Proyek Kolaborasi Maritim di SMAN 6 Tanjungpinang Fitriani, Rita; Sarkity, Dios; Bavitra; Krisman Waruwu, Nextto; Syabillah, Selsah
Abdimas Toddopuli: Jurnal Pengabdian Pada Masyarakat Vol. 7 No. 1 (2025): Volume 7, No 1, Desember 2025
Publisher : Universitas Cokroaminoto Palopo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30605/atjpm.v7i1.7080

Abstract

Keterbatasan literasi energi di kalangan siswa pesisir menjadi tantangan dalam mendukung transisi menuju energi bersih dan berkelanjutan. Program Pengabdian kepada Masyarakat (PKM) ini dilaksanakan di SMAN 6 Tanjungpinang dengan tujuan meningkatkan pengetahuan, sikap, dan keterampilan siswa mengenai blue energy melalui sosialisasi dan praktik eksperimen. Kegiatan dilakukan selama dua hari dengan pendekatan edukatif-partisipatif yang melibatkan 30 siswa kelas XI. Hari pertama difokuskan pada penyampaian materi tentang potensi energi laut dan kaitannya dengan Tujuan Pembangunan Berkelanjutan (SDGs). Hari kedua dilaksanakan praktik eksperimen menggunakan miniatur PLTS terapung untuk mengamati konversi energi surya menjadi listrik. Hasil pretest dan posttest menunjukkan peningkatan rata-rata pengetahuan siswa dari 60,53 menjadi 73,87 dengan N-Gain 0,19 (kategori rendah) karena skor awal sudah relatif tinggi. Aspek sikap juga meningkat dari 79,9 menjadi 84,2 dengan N-Gain 0,21. Observasi menunjukkan seluruh siswa antusias dan berhasil merangkai serta menyalakan lampu pada eksperimen, menegaskan keterampilan praktis mereka berkembang. Secara keseluruhan, kegiatan ini berhasil memperkuat literasi energi, menumbuhkan kesadaran lingkungan, dan mendukung pencapaian SDG 7 (Energi Bersih), SDG 13 (Aksi Iklim), dan SDG 14 (Ekosistem Laut).
Comparative Study of Solar Panel Power Performance and Battery Charging Patterns of Lithium-Ion Bavitra, Bavitra; Kusuma, Hollanda Arief; Refly, Septia; Guntara, Aldo
Journal of Telematics and Informatics Vol 13, No 1 (2025)
Publisher : Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jti.v13i1.

Abstract

New Renewable Energy (EBT) is an environmentally friendly energy source that can be continuously renewed. One of the EBT technologies that is widely used is solar panels, which utilize solar energy as an electrical resource. This research aims to analyze battery charging patterns based on using solar panels with capacities of 5WP, 10WP, and 20WP, as well as charging modules such as TP4056 and INA219 sensors to monitor voltage and amperage. The research results show that solar panels with a capacity of 20 WP have faster charging capabilities compared to solar panels with a capacity of 5 WP and 10 WP. The average battery charging time in sunny weather is around 3 hours, while the battery charging time in cloudy weather is around 6 hours. This shows that solar panels with higher capacity can increase the efficiency of the battery charging process. Keywords : New Renewable Energy, Solar Panels, Lithium-Ion Batteries, INA219 Sensors
Design and Implementation of a Solar-Powered Automatic Plant Irrigation System in Kampung Gisi, Bintan Regency, Riau Islands Bonardo, Doli; Alajuri, M. Hasbi Sidqi; Bavitra, Bavitra; Harahap, Basyaruddin Ismail; Afriadi, Arie
Jurnal Pengabdian kepada Masyarakat (Indonesian Journal of Community Engagement) Vol 11, No 4 (2025): December
Publisher : Direktorat Pengabdian kepada Masyarakat Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpkm.104333

Abstract

Agricultural sustainability is essential for rural communities, particularly in Kampung Gisi, where celery cultivation is a major source of household income. However, farmers continue to rely on manual irrigation, which is labor intensive, time consuming, and often inefficient in terms of water use. This study aimed to design and implement a solar powered automatic irrigation system that improves water efficiency while reducing farmers’ workload. The approach addressed these challenges by developing an autonomous system powered by solar energy and guided by soil moisture sensing to optimize water delivery. The proposed system integrates a solar panel, an ESP32 microcontroller, a soil moisture sensor, a relay module, and a DC pump to enable irrigation decisions based on real time soil moisture data. Implementation and testing were conducted in Kampung Gisi, Bintan Regency, Riau Islands. Data collection included site visits and semi structured interviews with local farmers to document existing irrigation practices and constraints. Field trials indicated that the system effectively automated irrigation, and the results showed an approximately 30% reduction in water use compared with manual watering. Prior to deployment, farmers typically spent several hours per day irrigating, whereas the automated system substantially reduced time requirements, allowing farmers to allocate effort to other farm activities. Farmers also reported more stable soil moisture conditions, which supported healthier crop development and improved yields. Overall, the findings demonstrate that the system can enhance irrigation efficiency, reduce labor demands, and support more sustainable agricultural practices. Community participation was critical, as farmers developed technical familiarity and a sense of ownership, which supports long term system viability. These results underscore the role of appropriate technology in strengthening farming communities, and they suggest that future work should prioritize accessibility and scalability to support broader adoption.
Design, Fabrication, and Experimental Evaluation of a 435 MHz Helical Antenna for 433 MHz IoT Modules Rusfa, Rusfa; Pramana, Rozeff; Bavitra, Bavitra; Oktavia, Ferly; Alajuri, M. Hasbi Sidqi; Simannulang, Andreas M
Jurnal Elektronika dan Telekomunikasi Vol 25, No 2 (2025)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jet.813

Abstract

The rapid growth of wireless communication demands within Internet of Things (IoT) applications requires antennas that exhibit high efficiency, compact dimensions, and reliable performance in the UHF band. This study aims to design, simulate, fabricate, and evaluate the performance of a helical antenna operating at 435 MHz, with its results compared against a slot antenna. The design process was conducted using CST Studio Suite with parameter optimization to achieve an optimal configuration. The prototype was fabricated using copper wire as the radiating element and an aluminum ground plane. Experimental testing was carried out with a UHF Antenna Demonstrator, followed by validation through a 433 MHz RF module integrated with Arduino. The simulation results indicated that the optimized helical antenna achieved aVoltage Standing Wave Ratio (VSWR) of 1.8 and a gain of 11.5 dBi. In contrast, the measurement results demonstrated improved performance, with a VSWR of 1.05, a return loss of −32.4 dB, and a bandwidth of 41 MHz. Comparative analysis revealed that the helical antenna outperformed the slot antenna in terms of efficiency, directional radiation pattern, and transmission distance, reaching up to 25 m compared to 15 m for the slot antenna. These findings confirm that the helical antenna is a more suitable and effective solution for UHF IoT communication systems, providing reliable performance for modern wireless applications.
Comparative Study of 10 Wp Solar Panel Performance with Mirror Reflectors at Various Angles HARAHAP, BASYARUDDIN ISMAIL; REFLY, SEPTIA; BONARDO, DOLI; BAVITRA, BAVITRA; WANATIRTA, BIMBI ADYTIA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 14, No 1: Published January 2026
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v14i1.84

Abstract

Improving solar panel performance is challenging due to increasing of solar radiation. This study investigates the effect of variations in the angle of the flat mirror reflector on the surface temperature and electrical performance of a 10 Wp monocrystalline solar panel using an ESP32-based data acquisition system with INA219 and DS18B20 sensors. Reflector angles of 45°, 60°, and 75° were tested from 08:00 to 16:00 WIB. The results indicate that the 45° reflector produced the lowest temperature (≈60 °C), the highest average voltage (19.7–20.0 V), maximum current of 120 mA, and peak power of 2.6 W. In contrast, the 75° angle increased the temperature to 72 °C and reduced the electrical output. The study concludes that a 45° reflector angle is optimal for low-power solar panels in hot tropical environments.
Co-Authors Akmam Akmam Alajuri, M Hasbi Sidqi Arie Afriadi Baharudin Bonardo, Doli Dimas Saputra Dios Sarkity Ferly Oktavia Fitriani, Rita Guntara, Aldo Habrio Ilva YR Harahap, Basyaruddin Ismail Harman Amir Hollanda Arief Kusuma Krisman Waruwu, Nextto Kusuma, Hollanda Arief Leo Anaris Sakti Mia Azhari Muhammad Abiyyu Alharits Pramana, Rozeff Rusfa, Rusfa Septia Refly Simannulang, Andreas M Solly Aryza Syabillah, Selsah WANATIRTA, BIMBI ADYTIA Zaki Ihwan