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All Journal Elkom: Jurnal Elektronika dan Komputer Joule (Journal of Electrical Engineering)
Dedy Yusuf
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Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy

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Rancang Bangun Spot Welding Andi Muhammad Fachruddin; Dedy Yusuf; Umar Muhammad; Usman Usman
Joule (Journal of Electrical Engineering) Vol. 1 No. 1, Januari 2020
Publisher : Politeknik Bosowa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (470.282 KB) | DOI: 10.1234/joule.v1i1.48

Abstract

Spot welding merupakan metode penyambungan plat besi yang sangat familiar dalam dunia manufaktur. Pada umumnya proses spot welding hanya menggunakan hambatan panas untuk proses penyambungannya tanpa menggunakan gas apapun. Adapun tujuan pembuatan spot welding ini untuk mempermudah pekerjaan pengelasan pada plat tipis, dan mengetahui pengaruh waktu pengelasan terhadap hasil pengelasan. Adapun material yang digunakan untuk pengujian yaitu besi plat dengan ketebalan 0.2 mm dan mm. Hasil pengujian pada plat 0.2 dengan waktu 1-15 detik didapatkan kondisi plat melekat adalah diatas 7 detik dengan rata-rata arus sekunder transformator adalah sebesar 657 A. Sedangkan waktu pengelasan di bawah 7 detik hasil pengelasan plat tidak melekat dengan baik. Untuk pengujian pada plat 0.5 mm dengan waktu pengelasan 1-15 detik hasil yang terbaik didapatkan adalah diatas 11 detik dengan arus rata-rata pada sisi sekunder transformator adalah 643 A, sedangkan lama pengelasan 5-9 detik hasil sambungannya kurang melekat dan di bawah 5 detik tidak melekat.
Pengembangan Sistem Presensi Pegawai DesaBerbasis Iot Dan RFID Untuk MeningkatkanEfisiensi Administrasi Dedy Yusuf; Khoirur Rozikin; Nuris Dwi Setiawan
Elkom: Jurnal Elektronika dan Komputer Vol. 18 No. 2 (2025): Desember : Jurnal Elektronika dan Komputer
Publisher : STEKOM PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/elkom.v18i2.3234

Abstract

The manual employee attendance process at the Perjuk Village government level often results in inaccurate data, delayed recapitulation, and difficulties in real-time attendance monitoring. This study aims to develop an Internet of Things (IoT) and Radio Frequency Identification (RFID)-based village employee attendance system to simplify the administrative process and improve the efficiency of attendance recording. The development method used is the Research and Development (R&D) model with stages including needs analysis, system design, validation, field trials, and product revisions. The system was built using an ESP32 microcontroller, an RC522 RFID module, and a Wi-Fi connection to transmit attendance data to a web-based server. Testing was conducted using the black box method to ensure all system features run according to design. The results of the black box test show that all features run according to design. The system records attendance automatically with 100% accuracy, saves data to the server database, and displays reports in the form of tables, graphs, and statistical cards. The study concludes that this IoT and RFID-based attendance system is able to improve the accuracy, speed, and efficiency of recording compared to manual methods, and is in accordance with operational needs at the Perjuk Village Office.
Co-Authors Andi Muhammad Fachruddin Khoirur Rozikin Nuris Dwi Setiawan Umar Muhammad Usman Usman