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All Journal TEKNIK INFORMATIKA REKAYASA Jurnal Teknologi Elektro ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Elektrika CYCLOTRON Multitek Indonesia : Jurnal Ilmiah Jurnal Teknik Elektro dan Komputer TRIAC Jambura Journal of Electrical and Electronics Engineering Journal of Robotics and Control (JRC) Jurnal Riset Rekayasa Elektro INAJEEE (Indonesian Journal of Electrical and Electronics Engineering) Journal Zetroem Among : Jurnal Pengabdian Masyarakat JASEE Journal of Application and Science on Electrical Engineering JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Jurnal Fortech SinarFe7 SCIENCE ELECTRO Electrician : Jurnal Rekayasa dan Teknologi Elektro JEECS (Journal of Electrical Engineering and Computer Sciences) Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Jurnal INFOTEL Jurnal FORTECH
Achmad Fiqhi Ibadillah
Universitas Trunojoyo Madura
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Physics Social Sciences Transportation

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Copper Winding Voice Coil Speaker Microcontroller Based Adi Kurniawan Saputro; Hanifudin Sukri; Andre Putra Pratama; Koko Joni; Achmad Fiqhi Ibadillah; Monika Faswia Fahmi
JEECS (Journal of Electrical Engineering and Computer Sciences) Vol. 9 No. 2 (2024): December
Publisher : Fakultas Teknik Universitas Bhayangkara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54732/jeecs.v9i2.1

Abstract

The voice coil is a vital speaker component, producing sound through electromagnetic vibrations. Generally, commercially available voice coils do not meet standard quality specifications, especially in terms of copper quality and adhesive strength. This problem often leads to issues such as coil burning or breakage during operation. On the other hand, ordering custom voice coils through manual winding processes requires considerable time. This study aims to address these limitations by designing an automated coil winding device that employs Pulse Width Modulation (PWM) techniques to control the speed of a DC motor, enabling the production of voice coils with specifications and durability tailored to specific needs. An Arduino Nano microcontroller controls the system and consists of a BTS 7960 motor driver, a Direct Current (DC) motor, an optocoupler sensor, a rotary encoder, a 4x4 keypad, and an LCD display with an I2C interface. Coil durability testing was conducted using an ohmmeter and an amplifier with a transformer ranging from 20A 45V to 30A 45V. The testing results indicate that coils produced with the automated winder can be adjusted to approach the 8-ohm specification, with a tolerance of 0.1 to 0.3 ohms, suitable for speaker requirements. The comparison results show that commercial voice coils exhibit resistances below 8 ohms, with the lowest resistance measured at 4.9 ohms for larger coils. During power testing, coils with a diameter of 35.5 mm and copper wire diameters of 0.20 mm and 0.23 mm broke when tested with a 20A 45V amplifier. In contrast, commercial coils remained stable up to an input power of 372 W and output power of 273 W, although a burning odor was detected. These findings indicate that the copper quality in commercial coils is superior in resisting amplifier power up to 30A 45V compared to coils produced with the automated device.
Design of Axial Flux Generator for Vertical Wind Turbine Power Plant Adi kurniawan saputro; Riza Alfita; Oryza Sativa Nugroho; Achmad Fiqhi Ibadillah; Kunto Aji Wibisono
Jambura Journal of Electrical and Electronics Engineering Vol 8, No 2 (2026): Juli - Desember 2026
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.v8i2.34141

Abstract

This research discusses the design and testing of an axial flux generator using neodymium iron boron (NdFeB) permanent magnets for use in vertical wind turbines at low wind speeds. The main objective of the research is to create a generator design that is compact, efficient, and can work well in low wind speed conditions. The development method begins with calculating the number of poles, coils, windings, and the maximum magnetic field. Next, 2D and 3D designs of the rotor and stator are made with a configuration of 6 pairs of poles or 12 magnets and 9 three-phase coils with a design capacity of 100 watts. After the design is completed, tests are carried out using resistor loads and various lamps to measure the generator's performance. The test results show that the generator is able to produce different efficiencies depending on the load and rotational speed. In the test using a resistor, the highest efficiency was achieved at 89.5% at a speed of 402.8 RPM, while in the test with a lamp load, the electrical efficiency reached 98.46% at a load of 1.5 watts at a speed of 1501 RPM. However, efficiency tends to decrease at higher loads due to increased copper losses in the windings. In conclusion, the designed axial flux generator is effective for use in vertical wind turbines at low speeds, although it still requires design improvements to maintain stable performance at high loads.
Liveness Detection-Based Home Door Security System for Anti-Spoofing Using Intel RealSense F455 Camera and LBPH Adi kurniawan saputro; Achmad Ubaidillah; Hamzah Arifianto Diputra; Deni Tri Laksono; Achmad Fiqhi Ibadillah; Achmad Zain Nur
Jambura Journal of Electrical and Electronics Engineering Vol 8, No 1 (2026): Januari - Juni 2026
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.v8i1.34918

Abstract

Spoofing attacks on facial recognition-based security systems are increasing along with the development of smart home technology. To address this issue, this study proposes a home door security system with the implementation of liveness detection-based anti-spoofing technology using an Intel RealSense F455 camera. The system is designed to verify the authenticity of a user's face in real-time by combining facial texture analysis and the user's physiological responses. The facial detection process is carried out using the Haarcascade algorithm to extract a 160×160 pixel facial area, while facial recognition uses the Local Binary Pattern Histogram (LBPH) method which is relatively stable to variations in lighting and viewing angles. The liveness detection mechanism is implemented mechanically by utilizing the Haarcascade Eye to detect the user's eye movements as an indicator of the presence of a live face, so that the system is able to distinguish real faces from fake media in the form of static photos. The system is integrated with a Telegram bot for real-time access monitoring, where automatic notifications are sent every time a door access attempt occurs. Test results show a facial recognition accuracy rate of 98.93%, with the system successfully detecting and verifying 30 registered users and producing an average confidence value consistently above 80%. Furthermore, the liveness detection mechanism proved effective in preventing photo-based spoofing attacks, with a stable detection success rate throughout the testing. These findings suggest that the integration of LBPH and eye-based liveness detection can improve the reliability of facial recognition-based door security systems.
Co-Authors - Haryanto 5Deni Tri Laksono A.A. Ketut Agung Cahyawan W Abd. Wahid Sholeh Abd. Wahid Sholeh Achmad Ubaidillah Achmad Ubaidillah Achmad Ubaidillah Ms Achmad Ubaidillah MS Achmad Zain Nur Adi Kurniawan Adi Kurniawan Saputro Adi Kurniawan Saputro ADI SAPUTRO Aditya Prayoga Ahmad Chaerul Al’ulla Amira Rohadatul Aisy Andre Putra Pratama Anugrah Rachmat Danu Anugrah Rachmat Danu Aries Prianto Ayu Dian Lestari Candra Arif Kurniawan Dafid, Ach Dedy Ega Saputra Deni Tri Laksono Deni Tri Laksono Desi Anis Anggraini Dian Neipa Purnamasari Diana Rahmawati Diana Rahmawati Diana Rahmawati Dwiky Ariyanto, Kemas Efendi, Akhmad Faikul Umam Fajar Sidik, Rahmad Farkhan, M. Faswia Fahmi, Monika Febriana, Iftitah Febrianto Hadi Kusuma Firly Abdillah, Fauzan Hadi Kusuma, Febrianto Hamzah Arifianto Diputra Hanif Pradipta Hanifuddin Sukri Hardiwansyah, Muttaqin Haryanto Haryanto Haryanto Haryanto Haryanto Haryanto Haryanto Hendra Wahyu Aprilyanto Hirvy Nurul Anwar ilyasa, yois Balian Irfan Irianto Ivan Dwi Cahyo Karina Wulandari Khotibul Umam Koko Joni Kunjo Aji Wibisono Kunto Aji Wibisono Kunto Aji Wibisono Kunto Aji Wibisono Kunto Aji Wibowo KURIAWAN, ADI Kurniawan Saputro, Adi Kurniawan, Denni KUSUMA, M.KURNIAWAN HADI Lailatul Riski, Ulfa Laksono, Deni Tri luqman hardianto M. Iqbal Arfiansyah MASLIKAH, SITI Maulana, Ahmad Afan Maulina Safitri MIFTACHUL ULUM Miftachul Ulum, Miftachul Mirza Pramudia Mitfatchul Ulum Moch Fadlian Rasyid Mohammad Dwi Cahyo Mohammad Edi Santoso Mohammad Faizin Zaini Monika Faswia Fahmi Morshed, Md. Monzur Muhammad , Dian Purnomo Muhammad Bahriyan Firdaus Muhammad Mukhlis Febriansyah Nur Muhammad Rinaldi Muttaqin Hardiwansyah Ogik Saputra, Khoirul Oryza Sativa Nugroho pradipta, Hanif Prianto, Aries Rasyid, Moch Fadlian Riza Alfita Riza Alfita Riza Alfita Riza Alfita Riza Alfita Riza Alfita, ROSIDA VIVIN NAHARI S. Ida Kholida Saputra, Dedy Ega Sholeh Abdullah, Wahyu Siti Maslikah Siti Maslikah Siti Maslikah Sukri, Hanifudin Syafik Syafik Tania Octavriana Thinakaran, Rajermani Tri Laksono, Deni Tri Sakti Sutrisno Ubaidillah Ms, Achmad Ubaidillah, Achmad Ulum, Miftachul Vivin Nahari Vivin Nahari Vivin Nahari, Vivin Nahari Wibisono, Kunto Aji Yois Balian Ilyasa Zainal Abidin Zainal Abidin