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All Journal Bulletin of Electrical Engineering and Informatics Jurnal Teknologi Pendidikan JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Pengabdian UntukMu NegeRI Paedagoria : Jurnal Kajian, Penelitian dan Pengembangan Kependidikan SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Teknik Informatika UNIKA Santo Thomas JCRS (Journal of Community Research and Service) AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Mantik Community Development Journal: Jurnal Pengabdian Masyarakat MEANS (Media Informasi Analisa dan Sistem) Jurnal Pendidikan Vokasional Teknik Elektronika (JVoTE) Jurnal Abdimas Ilmiah Citra Bakti (JAICB) JTEIN: Jurnal Teknik Elektro Indonesia JEEE-U (Journal of Electrical and Electronic Engineering-UMSIDA) Jurnal Teknik Informatika Unika Santo Thomas (JTIUST) JURNAL TEKNOLOGI INFORMASI & KOMUNIKASI DALAM PENDIDIKAN Electron: Jurnal Ilmiah Teknik Elektro Tekmulogi: Jurnal Pengabdian Masyarakat Jurnal Penelitian Pendidikan Indonesia Jurnal Polimesin
Bakti Dwi Waluyo
Universitas Negeri Medan
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Enhancement of surface hardness and roughness of HQ 805 steel using diamond-like carbon coating deposited by PVD Pakpahan, Binsar Maruli Tua; Yaqin, Rizqi Ilmal; Waluyo, Bakti Dwi; Zulfikram, Zulfikram; Mendoza, Muhammad Dominique
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6166

Abstract

Diamond-Like Carbon (DLC) coatings are well-regarded for their high hardness, low friction coefficient, and excellent wear resistance, making them suitable for enhancing surface properties in demanding industrial applications. This study aims to analyze the effect of DLC coating on HQ 805 steel, focusing on improvements in surface hardness and surface roughness. HQ 805 steel, which is known for its mechanical durability, was coated using the Physical Vapor Deposition (PVD) method to achieve a uniform and adherent thin film. Hardness was evaluated using the Vickers microhardness test, while surface roughness was measured with a profilometer. Results showed a significant increase in surface hardness, with the coated samples achieving up to 798 VHN. It represented a 25–30% increase compared to the uncoated steel at 355 VHN. Surface roughness exhibited only a slight increase (5–7% Ra), indicating the thin layer and uniform deposition achieved with DLC without adversely affecting the surface finish. These results confirm that PVD-applied DLC coatings can effectively enhance the mechanical surface performance of HQ 805 steel without compromising surface quality. The optimal coating condition was found at 400°C for 4 hours. This research shows the potential application of DLC-coated HQ 805 steel in high-wear industrial environments extending component service life and improving operational efficiency.
Optimization model and development of power estimation in photovoltaics for self-load consumption Yosefa Hutajulu, Olnes; Dwi Waluyo, Bakti; Dodi Suryanto, Eka; Haryanto Sinaga, Denny; Suwarno, Suwarno; Indra Cahyadi, Catra; Junaidi, Agus
Bulletin of Electrical Engineering and Informatics Vol 14, No 2: April 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v14i2.8506

Abstract

The Indonesian government's initiative to meet a renewable electricity supply 2050 of around 100% and its ecological benefits, has an impact on the big challenge where the increasing number of photovoltaic (PV) systems due to high power input and risks to electricity network security conditioned sunny weather for a long time. This research aims to provide predictable power output for network operators, thereby enabling longer planning periods and increasing the protection of the national operational network. Independent consumption by household consumers will impact household energy behavior and affect the security of the electricity network. Consumption itself provides an incentive to increase the cost of energy use which will be much higher than the compensation received, so software is needed which can support PV system prediction patterns. This pattern will close the gap in software development in the process of implementing optimization and configuration based on PV estimates. The consumption planning optimization algorithm itself validates the predetermined scenario optimization process. This research contributes to the efficiency and stability of energy use in households.
PELATIHAN PEMBUATAN POLA BUSANA SECARA KOMPUTERISASI DI SMKN 1 BERINGIN UNTUK MEMPERKUAT PENERAPAN KURIKULUM MERDEKA SERTA MENINGKATKAN KEMAMPUAN LITERASI PATTERN DRAWING SECARA DIGITAL Bahri, Halimul; Waluyo, Bakti Dwi; Harliana, Putri; Farihah, Farihah; Doni, Rahma
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 5 No. 6 (2024): Vol. 5 No. 6 Tahun 2024
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v5i6.37204

Abstract

Kegiatan pengabdian masyarakat ini bertujuan untuk memperkenalkan dan melatih guru serta siswa jurusan Tata Busana di SMKN 1 Beringin dalam penggunaan teknologi desain pola busana berbasis komputer sebagai langkah mendukung penerapan Kurikulum Merdeka. Pelatihan ini menggunakan perangkat lunak Richpeace CAD yang memungkinkan peserta untuk menciptakan pola busana secara digital dengan lebih akurat, efisien, dan kreatif dibandingkan metode manual. Dengan pelatihan ini, para peserta diharapkan mampu meningkatkan kompetensi teknis, produktivitas, serta kreativitas dalam pembuatan pola, sesuai dengan tuntutan industri mode modern. Hasil pelatihan menunjukkan peningkatan signifikan dalam kemampuan pembuatan pola digital di kalangan guru dan siswa, yang ditandai dengan kenaikan rata-rata keterampilan dari 76,70% (manual) menjadi 89,81% (digital). Kompetensi baru ini diharapkan tidak hanya meningkatkan mutu lulusan SMKN 1 Beringin tetapi juga memperluas peluang karier mereka di industri fashion berbasis teknologi.
Penerapan sistem irigasi cerdas berbasis IoT dan tenaga surya untuk meningkatkan produktivitas pertanian di Desa Sidomulyo Kabupaten Langkat Muchsin Harahap; Dian Putra Saragi; Bakti Dwi Waluyo; Aditiya Pratama Daryana
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 4 (2025): Juli
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i4.31392

Abstract

AbstrakDesa Sidomulyo Kecamatan Binjai Kabupaten Langkat Provinsi Sumatera Utara menghadapi permasalahan rendahnya efisiensi sistem irigasi akibat dominasi penggunaan metode manual dan pompa berbahan bakar diesel yang menyebabkan tingginya biaya operasional serta menurunnya produktivitas lahan. Kegiatan pengabdian ini bertujuan untuk meningkatkan efisiensi dan produktivitas pertanian melalui penerapan sistem irigasi cerdas berbasis Internet of Things (IoT) dan tenaga surya. Mitra dalam kegiatan ini adalah Kelompok Tani “Gapoktan Mulia Tani” dengan jumlah peserta sebanyak 20 petani aktif. Metode pelaksanaan mencakup sosialisasi teknologi, pelatihan praktikum penggunaan sistem, instalasi perangkat irigasi otomatis, serta pendampingan teknis selama masa implementasi. Evaluasi dilakukan melalui observasi lapangan, kuesioner, dan perbandingan data sebelum dan sesudah pelaksanaan. Hasil kegiatan menunjukkan peningkatan hasil panen sebesar 31% (dari 4,2 menjadi 5,5 ton per hektar), efisiensi biaya operasional sebesar 60% (dari Rp250.000 menjadi Rp100.000 per musim), serta penghapusan total penggunaan BBM. Selain itu, sebanyak 90% petani menyatakan mampu mengoperasikan dan merawat sistem secara mandiri. Program ini terbukti efektif dalam mengintegrasikan teknologi terbarukan ke dalam praktik pertanian desa dan mendukung pencapaian SDGs bidang pangan, energi bersih, dan iklim. Kata kunci: irigasi cerdas; IoT; energi surya; petani; efisiensi pertanian. AbstractSidomulyo Village faces low irrigation efficiency due to the widespread use of manual methods and diesel pumps, resulting in high operational costs and reduced land productivity. This community service activity aims to improve agricultural efficiency and productivity through the implementation of an Internet of Things (IoT)-based smart irrigation system powered by solar energy. The partner involved was the “Gapoktan Mulia Tani” farmer group, with 20 active farmers participating. The method included technology socialization, hands-on system operation training, device installation, and technical mentoring during the implementation phase. Evaluation was carried out through field observation, questionnaires, and pre-post implementation data comparison. The program resulted in a 31% increase in crop yields (from 4.2 to 5.5 tons/ha), a 60% reduction in irrigation costs (from Rp250,000 to Rp100,000 per season), and total elimination of fossil fuel usage. Additionally, 90% of farmers reported being able to independently operate and maintain the system. This program effectively integrates renewable technology into village farming practices and supports SDGs in food security, clean energy, and climate action. Keywords: smart irrigation; IoT; solar energy; farmers; agricultural.
Optimalisasi pakan untuk meningkatkan efisiensi budidaya lele di Kecamatan Tebing Tinggi Kabupaten Serdang Bedagai Muhammad Aulia Rahman Sembiring; Bakti Dwi Waluyo; Muhammad Ashari; Dian Putra Saragi; Ricky Nelson Tampubolon; Felix Hizkia Simanjuntak
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 4 (2025): Juli
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i4.31974

Abstract

AbstrakBudidaya lele di Kecamatan Tebing Tinggi, Kabupaten Serdang Bedagai, menghadapi tantangan efisiensi penggunaan pakan yang berdampak pada tingginya biaya produksi dan rendahnya hasil panen. Kegiatan pengabdian masyarakat ini bertujuan meningkatkan efisiensi budidaya lele melalui pelatihan manajemen pakan dan penerapan teknologi pencampur pakan otomatis. Sasaran kegiatan adalah Kelompok Tani Lele "Kuta Baru" dengan jumlah peserta 20 orang. Metode pelaksanaan meliputi sosialisasi, pelatihan teknis penggunaan pH Meter dan TDS Meter, aplikasi alat pencampur pakan otomatis berkapasitas 15 kg, serta pendampingan dan evaluasi hasil. Hasil program menunjukkan peningkatan efisiensi penggunaan pakan sebesar 18%, kenaikan rata-rata bobot panen 12%, dan 90% peserta mengadopsi teknologi baru. Kegiatan ini berkontribusi dalam meningkatkan produktivitas, efisiensi biaya, dan pengetahuan petani dalam budidaya lele yang berkelanjutan. Kata kunci: budidaya lele; efisiensi pakan; teknologi tepat guna; pelatihan; serdang bedagai AbstractCatfish farming in Tebing Tinggi Subdistrict, Serdang Bedagai Regency, faces the challenge of feed use efficiency which has an impact on high production costs and low yields. This community service activity aims to improve the efficiency of catfish cultivation through feed management training and the application of automatic feed mixing technology. The target of the activity is the "Kuta Baru" Catfish Farmer Group with a total of 20 participants. The implementation method includes socialization, technical training on the use of pH Meter and TDS Meter, application of automatic feed mixing equipment with a capacity of 15 kg, as well as mentoring and evaluation of results. The program results showed an 18% increase in feed use efficiency, a 12% increase in average harvest weight, and 90% of participants adopted the new technology. This activity contributed to increasing productivity, cost efficiency, and farmers' knowledge in sustainable catfish farming. Keywords: catfish farming; feed efficiency; appropriate technology; training; serdang bedagai
Utilization chatbot for Indonesian tourism: a post-pandemic solution of information accessibility Hesti Fibriasari; Bakti Dwi Waluyo; Baharuddin Baharuddin; Tansa Trisna Astono Putri; Savitri Rahmadany
JPPI (Jurnal Penelitian Pendidikan Indonesia) Vol. 10 No. 3 (2024): JPPI (Jurnal Penelitian Pendidikan Indonesia)
Publisher : Indonesian Institute for Counseling, Education and Theraphy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/020243791

Abstract

Indonesia is a renowned tourist destination worldwide. However, the COVID-19 pandemic has resulted in a decrease in both foreign and domestic tourist visits. Therefore, this research aims to develop a Telegram-based ChatBot application to increase post-pandemic tourist visits. The ChatBot is designed to make it easier for tourists to obtain information related to transportation and accommodation at tourist attractions. The ChatBot is built using the Knuth-Morris-Pratt (KMP) algorithm and web scraping method. The ChatBot's response to the keyword matching is then presented to tourists. To measure travelers' perceptions of ChatBot, the System Usability Scale (SUS) was used. SUS is a questionnaire consisting of 10 questions that were answered by 20 anonymous users. Based on the calculations, the average SUS score is 71, which indicates that the developed ChatBot is in the good category and suitable for use. Using this ChatBot will make it easier for tourists to obtain tourism information in Indonesia. With its ability to retrieve relevant information related to transportation and accommodation at tourist attractions, the ChatBot can serve as a useful tool to increase post-pandemic tourist visits.
Co-Authors Aditiya Pratama Daryana Agnes Irene Silitonga Agus Junaidi Agus Junaidi Ali Akbar Lubis Amirhud Dalimunthe Andreas Pratama Partogu Hutabarat Angga Koswara Malau Arwadi Sinuraya Aulia Rahman S, Muhammad Azizi Lubis, Reza Arbi Baharuddin . Baharuddin Baharuddin Br Tarigan, Sintya Verina Denny Haryanto Sinaga Deskristina Siregar Dita Febiyan Pratiwi Dodi Suryanto, Eka Doni, Rahma Eka Dodi Suryanto Erita Astrid Farihah, Farihah Felix Hizkia Simanjuntak Halimul Bahri Hesti Fibriasari Hesti Fibriasari Hesti Fibriasari Hutahaean, Harvei Desmon Ichwanul Muslim Karo Karo Immanuel, Michael Fritz Indra Cahyadi, Catra Januariyansah, Sapitri Kardo Simanjuntak Lisa Melvi Ginting Manullang, Jongga Marpaung, Salmian Sinurasti Mega Silfia Dewy, Mega Silfia Mendoza, Muhammad Dominique Muchsin Harahap Muhammad Ashari Muhammad Aulia Rahman Sembiring Muhammad Dani Solihin Muhammad Isnaini Muhammad Sulaiman Mulyana, Dadang Nelson Sinaga Nora Idiawati Pakpahan, Binsar Maruli Tua Pulungan, Ahmad Shafwan S Putri, Tansa Trisna Astono Rahmadany, Savitri Rahman S, Muhammad Aulia Rahman Sembiring, Muhammad Aulia Rais, Muhammad Amin Ramadhani, Syahara Ayu Rambey, Joni Syafrin Ressy Dwitias Sari Restu Restu Ricky Nelson Tampubolon Rivaldo Effendi Rizqi ilmal yaqin, Rizqi ilmal Rosma Siregar S, Muhammad Aulia Rahman Salman Bintang Salman, Budi Saragi, Dian Putra Savitri Rahmadany Sembiring, Muhammad Aulia Rahman Simatupang, Tora Valentina Sitompul, Betty Sitompul, Ely Esa Yes Sriadhi . Sukarman Purba Suryanto, Eko Dodi Suwarno Suwarno Syahputra, Ricky Andi Yoakim Simamora Yosefa Hutajulu, Olnes Zulfikram, Zulfikram