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All Journal JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Multitek Indonesia : Jurnal Ilmiah Jurnal JEETech Jurnal Fortech SinarFe7 JASTEN (Jurnal Aplikasi Sains Teknologi Nasional Magnetika: Jurnal Mahasiswa Teknik Elektro Taawun: Jurnal Pengabdian kepada Masyarakat
Ni Putu Agustini
Institut Teknologi Nasional Malang
Religion Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Physics Other

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INDUCTIVE CHARGING PORTABEL DENGAN PANEL SURYA SEBAGAI PENGISIAN BATERAI HANDPHONE YANG MUDAH DAN PRAKTIS Alfarid; Ni Putu Agustini; M. Ibrahim Ashari; Radimas Putra Muhammad Davi Labib; Zulfikar Zauzi; I Made Wartana; Reza Diharja; Sirojul Hadi; Parama Diptya Widayaka
JASTEN (Jurnal Aplikasi Sains Teknologi Nasional) Vol. 5 No. 1 (2024)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Institut Teknologi Nasional Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36040/jasten.v5i1.10054

Abstract

Penggunaan teknologi ponsel tidak dapat dilepaskan dari penggunaan charger. Charger umumnya digunakan membutuhkan energi listrik dari PLN dan generator. Panel surya dapat menjadi solusi sebagai alternatif baru untuk menyediakan sumber energi listrik. Induktif charging yang menggunakan elektromagnetik dalam sistemnya tidak memerlukan kabel saat digunakan. Alat ini menggunakan dua lilitan kumparan, yaitu lilitan primer yang terhubung dengan powerbank, dan lilitan sekunder untuk menerima dan mentransfer tegangan ke beban, dalam hal ini handphone. Hasil penelitian menunjukkan bahwa panel surya berfungsi sesuai dengan intensitas sinar matahari. Jika panel surya terkena cahaya matahari yang tidak maksimal atau cuaca berawan, tegangan output yang dihasilkan mengalami penurunan drastis. Baterai powerbank dapat menerima daya dari panel surya dengan baik, sehingga powerbank dapat terisi selama 460 menit dengan tegangan output sebesar 4 volt. Baterai handphone dapat menerima daya dari powerbank dengan rata-rata kenaikan setiap 1% baterai memerlukan waktu 8,5 menit. Sistem pengisian induktif dalam penelitian ini menggunakan panel surya 3 WP dengan sistem pembangkit sinyal gelombang sinus frekuensi 90 kHz dan dua kumparan sebagai sistem transmisi energi berbasis inductive charger.
Optimizing Gas Sensing Accuracy: Evaluating and Compensating TGS2602 Sensor Responses in Diverse Environmental Conditions Bima Romadhon; Citra Dewi Megawati; M. Abd Hamid; Ni Putu Agustini; Radimas Putra Muhammad Davi Labib; I Made Wartana
JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 7, No 1 (2024): February 2024
Publisher : Merdeka Malang University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jeemecs.v7i1.11867

Abstract

This research aims to investigate the TGS2602 gas sensor's response to variations in temperature and humidity, focusing on the analysis of concentration reading offsets influenced by environmental humidity fluctuations. The TGS2602 sensor demonstrates high sensitivity to hydrogen sulfide (H2S), making it relevant for gas monitoring in volcanic environments. However, the sensor's weakness lies in reading offsets triggered by changes in temperature and humidity. Calibration methods and mathematical analysis are employed to evaluate the sensor's performance. Testing is conducted by varying temperature and humidity in enclosed conditions, and the results indicate that temperature and humidity significantly affect gas concentration readings. As a solution, compensation methods, such as using temperature and humidity sensors and developing algorithms, are required to address reading offsets. This study provides insights into the reliability of the TGS2602 sensor in various environmental conditions and proposes compensation strategies to enhance gas measurement accuracy.
Designing an Android-Based Teacher Attendance System to Improve The Quality of Learning in Vocational High Schools Mochammad Ibrahim Ashari; Deddy Rudhistiar; Ni Putu Agustini; Reiny Ditta Myrtanti; Sujianto
TAAWUN Vol. 5 No. 01 (2025): TA'AWUN FEBRUARY 2025
Publisher : Pusat Penelitian Pengabdian Pada Masyarakat Sekolah Tinggi Ilmu Tarbiyah Al-Fattah Siman Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37850/taawun.v5i01.794

Abstract

This service aims to overcome problems in attendance management at SMK PGRI Sumber Pucung, which is currently still using a manual system, so it can potentially cause recording errors, time inefficiencies, and the risk of data loss during the archiving process. Therefore, as a solution to the existing problem, an Android-based attendance system was developed, where the method applied is the waterfall method, with the implementation carried out in stages starting from problem identification to system evaluation. The results of the service show that the system has succeeded in increasing the efficiency of daily attendance recording time by 66.67% and increasing the recording accuracy by up to 80%, so that this android-based attendance system can overcome problems in manual attendance management at SMK PGRI Sumber Pucung, and can be implemented as a solution to help the school administration process. Attendance system testing shows effective performance and runs well across various platforms. In the admin dashboard test, the test on the student attendance application from 3 test scenarios was successfully carried out as expected, then the test on the student attendance application consisting of 6 scenarios was also successfully carried out according to expectations. Functional testing on the web browser, admin dashboard, and functional testing on the teacher attendance application which has the same scenario, totaling 14, was successfully carried out according to expectations. Testing on the student attendance application that has 4 scenarios was successfully carried out according to expectations.
Co-Authors Achmad Faris Rachmatilah Adrianto Adhi Setyo Nugroho Alfarid Awan Uji Krismanto Berliano Budiono Bima Romadhon Parada Dian Palevi Citra Dewi Megawati Deddy Rudhistiar Dionisia Rue Fikram I Made Wartana Irrine B Sulistiawati Irrine Budi Sulistiawati Irrine Budi Sulistiyawati Jaya Indra Bayu M. Abd Hamid M. Ibrahim Ashari Mochamad Dwi Kuncahyo Mochamad Ifan Mashudi Mochamad Ifan Mashudi Mochammad Ibrahim Ashari Muhammad Hafizh Ridho Pandu Fajar Satria Parama Diptya Widayaka Radimas Putra Muhammad Davi Labib Reiny Ditta Myrtanti Reza Diharja Sirojul Hadi Sujianto Widodo Pudji Muljanto Yusuf Ismail Nakhoda Zulfikar Zauzi