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All Journal Tekno : Jurnal Teknologi Elektro dan Kejuruan JURNAL NASIONAL TEKNIK ELEKTRO JTERA (Jurnal Teknologi Rekayasa) INOVTEK POLBENG Logista: Jurnal Ilmiah Pengabdian Kepada Masyarakat Jurnal E-Komtek Jurnal Berdaya Mandiri Madani : Indonesian Journal of Civil Society REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Jurnal Jaringan Telekomunikasi Jurnal Hilirisasi Technology kepada Masyarakat (SITECHMAS) Room of Civil Society Development Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Room of Civil Social Development
Hendi Purnata
Politeknik Negeri Cilacap
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Design of Dipole Antenna at 433 Mhz ISM Band for Underwater to Land Communication Erna Alimudin; Arif Sumardiono; Riyani Prima Dewi; Saepul Rahmat; Hendi Purnata; Novita Asma Ilahi
Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Vol 11 No 1 (2024): Jurnal Ecotipe, April 2024
Publisher : Jurusan Teknik Elektro, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jurnalecotipe.v11i1.4472

Abstract

In this research has been designed dipole antenna which is intended for communication underwater to land that worked and implemented into prototype form. Design using the software Ansoft High Frequency Structural Simulator (HFSS) v13 and analyze parameters which are generated in simulation results, namely the Voltage Standing Wave Ratio (VSWR), reflection coefficient (S11), the radiation pattern of two-dimensional and three-dimensional. On its design was made of two dipole antennas that can work in a system as a transmitter and receiver. Both of these Dipole antenna operating at ISM 433 MHz frequency band and produce VSWR = 1.62 at the transmitter antenna and = 1.406 on the receiving antenna. In addition, has been measured radiation patterns by antenna performance. From the results of radiation patterns measurements, obtained two pieces of Main Lobe in its field azimuth.
Enhanced Depth Control and Stability in Submersible Pylon Inspection Robots Using IMU-Based Extended Kalman Filter and PID Control Hendi Purnata; Riyani Prima Dewi; Saepul Rahmat; Erna Alimudin; Novita Asma Alahi
Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Vol 11 No 2 (2024): Jurnal Ecotipe, October 2024
Publisher : Jurusan Teknik Elektro, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jurnalecotipe.v11i2.4523

Abstract

The research developed a Submersible Pylon Inspection Robot (SPIR) to clean and inspect underwater structures automatically, facing challenges in stability and depth of operation. Integrating the Inertial Measurement Unit (IMU) with the Extended Kalman Filter (EKF), as well as implementing customized PID controls, aims to improve the accuracy and stability of SPIR in dynamic underwater environments. The results show that the SPIR control system can follow the reference depth at shallow depths well, but has difficulty maintaining stability at deeper depths. The position error graph on the Z-axis shows the initial fluctuation that decreases over time, reflecting the increased calibration. The use of drive motors also shows different working patterns, with some motors active in depth settings and others for stabilization. This study shows that the integration approach of IMU, EKF, and PID control can improve SPIR performance, although further adjustments are required to meet the extreme challenges in underwater environments.
Solar Panel Technology for the Treatment of Eucalyptus Oil Refined Waste Rahmat, Saepul; Purnata, Hendi; Ilahi, Novita Asma; Musyafiq, Afrizal Abdi; Dewi, Riyani Prima
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 6, No 2 (2025): Reka Elkomika
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v6i2.98-107

Abstract

Banjarwaru Village, Nusawungu District, Cilacap Regency, has natural resources, especially eucalyptus plants, which have the potential to develop the economy of the village community. The biggest problem faced by LMDH Dadi Makmur as a unit that manages the eucalyptus oil business is that after the production of eucalyptus oil distillation, it will produce residual waste from eucalyptus twigs and leaves with quite a large volume and only allowed to be piled up around the yard where the distillery is, causing area storage of essential oil raw materials is narrow and also takes a long time to become organic fertilizer. The innovation offered through this community service activity is implementing a briquette printing machine from eucalyptus oil refining waste, which is energy efficient and based on solar panels. The dedication results show that the eucalyptus oil waste processing activity and reducing environmental pollution also produce biomass briquettes that the residents of Banjarwaru Village can utilize as a leading economic product of Banjarwaru Village. The test data of the briquette making machine shows that the output voltage from the inverter produces an AC voltage with a value of 216 - 221 V, so that it can rotate the AC motor with a rotation of 800 - 1400 rpm.
Pengolahan Limbah Cair Batik dengan Elektrokoagulasi dan Filtrasi-Adsorbsi untuk Keberlanjutan Hendi Purnata; Saepul Rahmat; Ilahi, Novita Asma; Ayu Triwuri, Nurlinda; Artdhita Fajar Pratiwi
Room of Civil Society Development Vol. 4 No. 1 (2025): Room of Civil Society Development
Publisher : Lembaga Riset dan Inovasi Masyarakat Madani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59110/rcsd.528

Abstract

Limbah cair dari industri batik, terutama yang mengandung bahan kimia berbahaya seperti pewarna sintetik dan logam berat, menjadi masalah lingkungan yang signifikan di berbagai wilayah industri batik, termasuk Cilacap. Penelitian ini mengeksplorasi penerapan teknologi elektrokoagulasi sebagai metode pengolahan limbah batik, dengan fokus pada optimasi proses dan integrasi sistem filtrasi-adsorpsi. Proses elektrokoagulasi terbukti efektif dalam menurunkan parameter kualitas air, seperti BOD, COD, TSS, dan konsentrasi logam berat, seperti kromium, yang pada akhirnya memenuhi standar baku mutu yang ditetapkan oleh regulasi lingkungan (PERDA No. 5 Tahun 2012 Provinsi Jawa Tengah). Hasil penelitian menunjukkan penurunan signifikan pada BOD, COD, TSS, dan kromium, dengan penerapan sistem filtrasi-adsorpsi lebih lanjut meningkatkan efektivitas pengolahan. Penelitian ini memberikan kontribusi ilmiah yang signifikan dalam menawarkan solusi pengolahan limbah yang ramah lingkungan dan berkelanjutan untuk industri batik, dengan potensi adopsi yang lebih luas di tingkat global. Teknologi ini tidak hanya mengurangi dampak negatif limbah terhadap lingkungan tetapi juga memungkinkan limbah batik untuk diproses kembali menjadi produk berguna, seperti malam (candle wax). Temuan ini menunjukkan potensi penerapan teknologi elektrokoagulasi dan filtrasi-adsorpsi sebagai solusi inovatif untuk pengelolaan limbah industri batik secara global.
Optimization of Small-Scale Coffee Roasting Machine with Servo Temperature and Angle Control for Consistent Roasting Results Purnata, Hendi; Supriyono, Supriyono; Kurniabayu, Marshal; Abshor, Raafi
Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Vol 12 No 1 (2025): Jurnal Ecotipe, April 2025
Publisher : Jurusan Teknik Elektro, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jurnalecotipe.v12i1.4551

Abstract

The coffee roasting process is essential for creating distinctive aromas and Flavors. Manual roasting often results in uncontrolled temperatures, resulting in uneven and burnt coffee beans. Therefore, an automatic roasting machine was developed to control stable temperatures at setpoints of 180°C (light roast), 220°C (medium roast), and 250°C (dark roast), with a monitoring system to ensure optimal results. Servo angle settings are used to optimize temperature stabilization, while a DC fan serves to remove excess heat from the machine. The system uses an Arduino Uno and ESP32, with a Thermocouple Type K temperature sensor and an I2C LCD display for real-time monitoring. Integration with IoT Blynk allows remote monitoring and control through a mobile application. Research shows that a servo angle of 140° provides the optimal temperature increase, while an angle of 100° is effective for lowering the temperature when it exceeds the setpoint. These angles are used in the system to keep the temperature controlled according to the specified target.
Performance Process of Coil Winding Machine Based on Accuracy and Speed for Water Pump Motor Ilahi, Novita Asma; Musyafiq, Afrizal Abdi; Purwiyanto; Rahmat, Saepul; Prima Dewi, Riyani; Purnata, Hendi
JURNAL NASIONAL TEKNIK ELEKTRO Vol 12, No 3: November 2023
Publisher : Jurusan Teknik Elektro Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jnte.v12n3.1101.2023

Abstract

A coil winding machine for water pumps using a monitoring system is a development of conventional winding tools. In regular coil winding tools, the coil winding process is done manually by rotating the handle as many times as the desired number of turns. The conventional winding tools have problems consisting of inconsistent working speed and operator-dependent winding continuity. Undesirable windings can occur with conventional winding tools, and the winding process requires close supervision. Therefore, the automatic coil winding machine was developed to optimize the coil winding process. The machine utilizes a DC motor to rotate the coil rolls, replacing the conventional roller handle function. This machining method uses an optocoupler sensor. The sensor serves to identify and evaluate the rotation of the roller. In addition, the ATmega8 microcontroller was applied to develop a system that can work automatically. Data collection involves varying the number of wire turns and the wire diameter dimension. The variation is necessary because the number of windings and wire diameter affect pump efficiency and performance. The data testing showed a machine accuracy rate of 98%, with a maximum difference of 1 coil winding in the results. This data confirms that the coil winding machine meets the tool's accuracy standards.
TEKNOLOGI TEPAT GUNA BERBASIS ENERGI SURYA SEBAGAI INOVASI PENINGKATAN POTENSI DESA WISATA: APPROPRIATE TECHNOLOGY BASED ON SOLAR ENERGY AS AN INNOVATION TO ENHANCE THE POTENTIAL OF TOURISM VILLAGES Ilahi, Novita Asma; Purnata, Hendi; Rahmat, Saepul; Widianingsih, Betti; Karyani, Uli
Jurnal Berdaya Mandiri Vol. 5 No. 1 (2023): JURNAL BERDAYA MANDIRI (JBM)
Publisher : Universitas PGRI Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31316/jbm.v5i1.4185

Abstract

Widarapayung Wetan is one of the innovation villages in Cilacap Regency with the method of developing a one-stop destination tourist area. The development of tourist areas certainly attracts visitors and the public to be able to gather and have activities at the same location. This innovation certainly requires various facilities and infrastructure to support development. To support the government's program in developing the use of new and renewable energy and developing an innovation village in the village of Widarapayung Wetan, an infrastructure to support visitor facilities was made in the one-stop destination tourist area of ​​Widarapayung Wetan Village. The Solar Electric Device Charging Station (S – EDCS) uses solar system technology so that it will not burden the use of PLN's electrical energy. The use of solar energy also provides knowledge for the surrounding community to be able to innovate to develop electricity needs using the S – EDCS tool which is implemented in the village of Widarapayung Wetan. The installation of S – EDCS is a Social Innovation for the community that has not existed before in Widarapayung Wetan Village.
PENERAPAN MESIN IRAT BAMBU DAN DIGITALISASI PENJUALAN PRODUK UNTUK SENTRA ANYAMAN BAMBU DI DESA BANJARWARU Rahmat, Saepul; Purnata, Hendi; Diantono Abda'u, Prih
Jurnal Berdaya Mandiri Vol. 7 No. 3 (2025): JURNAL BERDAYA MANDIRI (JBM)
Publisher : Universitas PGRI Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31316/jbm.v7i3.8548

Abstract

Usaha Karya Bamboo Weaving Center is a bamboo weaving craft institution located in RT 02 RW 04 Dusun Bokol Kulon, Banjarwaru Village. It is managed independently by Hadi Tuslam Ranantika together with the community. This group started the business with 14 members who were tasked with making bamboo weaving crafts based on local wisdom, such as bags, clothes, baskets, bamboo boxes, flower vases, tissue holders, and other accessories. The biggest problem partners face is that the large number of orders cannot be fulfilled due to the limited availability of raw bamboo weaving materials. This is because they still rely on the conventional bamboo weaving process, which is labor-intensive and requires limited human resources to prepare the weaving materials. The purpose of this activity is to address the poor management system, which causes low efficiency in operations, quality control, and hinders long-term planning. Community service activities, including the application of bamboo weaving machine technology and the creation of a product sales system website for the bamboo weaving center in Banjarwaru Village, have helped increase the productivity and sales of partner products. The production results from the shredding machine enable the preparation of material requirements for 60 products per day, thereby exceeding the demand for raw materials by 50 products per day. Keyword: Solar PV; Bamboo Slicing Machine; Renewable Energy
Co-Authors Abshor, Raafi Afrizal Abdi Musyafiq Agus Santoso Aldi Alamsyah Anindya Dwi Risdhayanti Arif Sumardiono Arif Sumardiono Aris Stiyawan Asni Tafrikhatin Ayu Triwuri, Nurlinda Diantono Abda'u, Prih Erna Alimudin Erna Alimudin Faisal Efendi , Anggi Hafid Kusuma , Rafli Harnandito Paramadharma Hera Susanti Hera Susanti Hera Susanti Irvan Maulana Karyani, Uli Komarudin Achmad Kurniabayu, Marshal Mahfud, Guffaro Muhamad Yusuf Muhammad Arif Hidayat Muhammad Yusuf Nitis Aruming Firdaus Nova Suparmanto Novita Asma Alahi Novita Asma Ilahi Prima Dewi, Riyani Pujono Pujono Purwiyanto Purwiyanto Purwiyanto Purwiyanto Purwiyanto Purwiyanto Riyani Prima Dewi Riyani Prima Dewi Riyani Prima Dewi Saepul Rahmat Saepul Rahmat Saepul Rahmat Saepul Rahmat Saepul Rahmat Saepul Rahmat Saepul Rahmat, Saepul Shabrina Adani Putri Sugeng Dwi Riyanto Supriyono Supriyono Supriyono Supriyono Susanti, Hera Syahrul Ramadan Tafrikhatin, Asni Vicky Prasetia Vicky Prasetia Widianingsih, Betti Zaenurrohman Zaenurrohman Zaeurrahman