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All Journal Transmisi: Jurnal Ilmiah Teknik Elektro ELKHA : Jurnal Teknik Elektro Jurnal Informatika dan Teknik Elektro Terapan ELINVO (Electronics, Informatics, and Vocational Education) Journal of Electrical Technology UMY JETT (Jurnal Elektro dan Telekomunikasi Terapan) Indonesian Journal of Artificial Intelligence and Data Mining JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Journal Technology and Implementation Bussines TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Buletin Ilmiah Sarjana Teknik Elektro Jurnal Teknika Kontribusia : Research Dissemination for Community Development Jurnal Teknologi dan Terapan Bisnis Academia Open Indonesian Journal of Law and Economics Review Journal of Computer Networks, Architecture and High Performance Computing Community Empowerment Journal of Electrical Engineering and Computer (JEECOM) JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Jurnal Abdimas ADPI Sains dan Teknologi Indonesian Journal of Innovation Studies Jurnal Al Ulum: LPPM Universitas Al Washliyah Medan PELS (Procedia of Engineering and Life Science) Procedia of Social Sciences and Humanities Malcom: Indonesian Journal of Machine Learning and Computer Science Teknik: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Jurnal Teknologi dan Terapan Bisnis Riwayat: Educational Journal of History and Humanities JOTECHS
Shazana Dhiya Ayuni
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering 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 Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Automatic Safe Security System Using Pin Code And Fingerprint Based On Microcontroller With Telegram Notification Chanifudin, Achmad Yahya; Ayuni, Shazana Dhiya; Falah, Agus Hayatal; Sulistiyowati, Indah
Journal of Electrical Engineering and Computer (JEECOM) Vol 7, No 2 (2025)
Publisher : Universitas Nurul Jadid

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33650/jeecom.v7i2.11972

Abstract

The primary purpose of a security system is to protect valuable and important items. A safe is a medium for storing valuables, adjusted to the size of the safe compartment. Therefore, a proper security system is needed to ensure the owner does not worry about the loss or theft of the contents. This security system is adapted to the current era of advanced and modern technology. The sensors and microcontroller used include the NodeMCU ESP8266, fingerprint sensor, keypad, and LED indicator lights. Telegram notifications or alerts via the application can be received through an internet connection. This security system is implemented to secure the safe and can be accessed via an Android smartphone with the Telegram app installed. It enables the owner to receive access notifications indicating whether an attempt was successful or failed. This research was conducted using an experimental method by building a device to enhance the safety of the safe, providing peace of mind about the stored items. The experiment was carried out at a residence located in Bendosari Village, Ngantru District, Tulungagung Regency. Based on the results, it can be concluded that the development of an automatic safe using a pin code and fingerprint based on a microcontroller with Telegram notifications has successfully met the research objectives. All sensors and components within the safe function properly, ensuring the protection of valuables inside and offering peace of mind to the owner.
Empirical Regression-Based Model for Predicting Voltage and Current in a Household Wireless Power Transfer System : Model Empiris Berbasis Regresi untuk Prediksi Tegangan dan Arus pada Sistem Wireless Power Transfer Rumah Tangga Ayuni, Shazana Dhiya; Syahrorini , Syamsudduha
Indonesian Journal of Innovation Studies Vol. 26 No. 4 (2025): October
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/ijins.v26i4.1738

Abstract

To power low-power household appliances, this study investigates the harvesting of RF signal energy using a Villard–Dickson rectifier circuit and a 470 MHz dipole antenna. The RF signal from the handy talkie is converted into DC voltage when measured from a distance of 5 to 25 cm. The voltage drops from 7.7V to 1.5V, and the current drops from 30mA to 10mA. A relationship showing the voltage and current decreasing almost inversely with distance was found thru logarithmic regression data analysis. A high coefficient of determination indicates compatibility with free-space propagation theory. At a distance of 5 cm, the highest RF-to-DC conversion efficiency reached 18.3%. The resulting regression model allows for performance prediction at distances beyond testing and serves as a practical guide for building wireless power transmission systems and low-power IoT applications. Additionally, this model also serves as a scientific reference for research and dissertations in the field of RF energy harvesting. Highlights: RF-to-DC conversion achieved up to 18.3% efficiency at 5 cm. Voltage and current decrease inversely with distance, supported by logarithmic regression. Regression model enables prediction and application in low-power IoT systems. Keywords: regresi logaritmik, rectifier Villard-Dickson, antenna dipole
Co-Authors Adhimanata, Yogi Agus Hayatal Falah Ahmad Ahfas Aji, Eka Afdi Septiyono Akbar, Mochammad Dzikril Akhmad Ahfas Akhmad Mulyadi Akmad Ahfas Alamsha, Mukhammad Ariya Alfarid Hendro Yuwono Ali Mahfud Roziqin Amrul wahyu Apriliana Sari, Indah Arief Wisaksono Boy Isma Putra Budi, Mohamad Istiyo Cahyo, Chandra Darmawan Dwi Chanifudin, Achmad Yahya Dandi Pratama Putra Dedy Aryanto Dwi Hadidjaja Exsavator Dwiryanto Putra Fariz Zulfiryansyah Fatahillah Ikra Negara Fatahillah Okra Negara Feri, Mohammad Ferry Wahyu Perdana Guyub Rahman Auwali Haidar Muhammad Indah Apriliana Sari Wulandari Indah Sulistiyowati Izza Anshory Izza Rosidah Izza Rosidah Izza Rosyidah Jamaaluddin Jamaluddin Jamaluddin Lukman Hudi Moh. Alfian Mohammad Tetuko Putra Mulana Muchlason, Ahmad Muhamad Saifudin Zuhri Muhammad Fariz Ilmi Muhammad Nasar Muhammad Nauval Khoiron Hamdani Muhammad Ulum Muhammad Zum’an Azmi Pasca Yoghaswara Pradana, Fendy Steyo Raharjo , Annas Wismo Rayhan, Akbar Rossoleh, Andriyan Herqi Shon Haji Sy. Syahrorini Sy. Syahrorini Syahrorini, Syamsudduha Syamsudduha Syahrorinni uddin, Jamaal Ulum, M. Bahrul Yoghaswara, Pasca Zaputra, Gaggah