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All Journal Jurnal Pengabdian Masyarakat Journal of Embedded Systems, Security and Intelligent Systems Jurnal Sipakatau
Ahmad Risal
Universitas Negeri Makassar, Indonesia
Religion Arts Humanities Computer Science & IT Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Nursing Physics Social Sciences Veterinary Other

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Adaptive Pulse-Width Modulation Algorithm for Energy-Efficient Control of Robotic Arm Actuators Sutarsi Suhaeb; Ahmad Risal
Journal of Embedded Systems, Security and Intelligent Systems Vol 6, No 3 (2025): September 2025
Publisher : Program Studi Teknik Komputer

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/jessi.v6i3.10318

Abstract

The development of energy-efficient robotic systems has become increasingly important, particularly in servo-driven robotic arms where continuous PWM signals lead to unnecessary energy loss and thermal stress. This study proposes an adaptive pulse-width modulation (PWM) algorithm designed to activate servo signals only during motion phases and automatically deactivate them once the target position is reached. A four-degree-of-freedom robotic arm prototype was developed using an ESP32 microcontroller, MG90S servos, and ACS712-based current monitoring to evaluate power efficiency under conventional continuous PWM and the proposed adaptive control. Experimental results demonstrate a 28–33% reduction in average power consumption, a decrease of 6–8 °C in servo operating temperature, and the preservation of positional accuracy within ±5%. These findings confirm that significant energy savings and thermal improvements can be achieved without modifying hardware components. The proposed algorithm offers a practical, lightweight, and software-based optimization approach suitable for educational, research, and low-power robotic applications. This work introduces a distinct adaptive activation strategy that fully disables PWM in steady-state conditions, representing a low-cost and effective contribution to sustainable servo control.
Basic Training of Arduino Microcontroller Based on Wokwi for Beginner Student Groups Ahmad Risal; Della Fadhilatunisa; Ninik Rahayu Ashadi; Asmaul Husnah Nasrullah; Anita Candra Dewi
Jurnal Sipakatau: Inovasi Pengabdian Masyarakat Vol. 2 No. 1 (2024): Jurnal Sipakatau
Publisher : PT. Global Research Collaboration

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/jsipakatau.v1i6.2452

Abstract

The community service conducted by the team of lecturers from Universitas Negeri Makassar was held at the Electronics Workshop, Department of Educational Electronics, with 15 beginner students registered as participants. The problems identified by the research team, in collaboration with the participants during the socialization, were as follows: (1) The lack of understanding among beginner participants regarding the practice of Arduino-based microcontroller with Wokwi, (2) New students, as beginners, found it difficult to practice with Arduino-based microcontrollers using Wokwi, (3) Beginner participants in the microcontroller practice needed guidance and mentoring from competent individuals to effectively simulate the Arduino-based microcontroller with Wokwi.To address the problems faced by the partners, the solutions offered through this Community Service Program (PKM) were as follows: (1) Providing training to stimulate the potential and interest of the participants, (2) Offering training that integrates knowledge (mathematics, science, and technology) with hardware and software for beginner participants, inviting competent speakers in the field of Arduino-based microcontroller using Wokwi, (3) Conducting training and mentoring to help participants demonstrate Arduino-based microcontroller practice with Wokwi, led by a competent instructor.The method of implementing this activity involved training for beginner students, specifically new students. After being trained, they were mentored to apply the knowledge gained in order to enhance their professionalism in using the Wokwi application. The training was carried out in two main stages: (1) Preparation phase, and (2) Implementation phase of the training. Overall, the results of the Arduino-based microcontroller practice training in the Electronics Workshop of the Educational Electronics Department can be concluded as satisfactory and successful in accordance with the planned objectives. This is reflected in various indicators, including the alignment between planning and implementation, the attendance rate of participants in each session, and the results of the participants' feedback surveys. All the materials planned in the training proposal were successfully delivered as intended. The attendance of the training participants in each session reached 100% of the total 15 registered participants. The activity was also successful in improving the participants' knowledge, skills, and motivation to become more proficient in using the Wokwi application.
Pembimbingan Kegiatan Kampus Mengajar 6 dengan Program Peningkatan Kemampuan Literasi dan Numerasi Siswa SMPN 1 Turikale dan SD Inpres 5/81 Passippo Muhammad Akil; Aulia Sabril; Faisal Najamuddin; Labusab Labusab; Ahmad Risal
Jurnal Sipakatau: Inovasi Pengabdian Masyarakat Vol. 1 No. 4 (2024): Jurnal Sipakatau
Publisher : PT. Global Research Collaboration

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/jsipakatau.v1i4.2418

Abstract

Elementary school has a crucial role in forming students' literacy and numeracy skills, which are the foundation for learning at higher levels of education. Various studies show that literacy and numeracy levels among students still require serious attention. The Teaching Campus Program, as part of the Merdeka Belajar – Kampus Merdeka (MBKM) initiative, is here to answer this challenge by involving students in efforts to improve the quality of education in primary and secondary schools in Indonesia. The Teaching Campus 6 program focuses on improving the literacy and numeracy skills of students at SMPN 1 Turikale and SD Inpres 5/81 Passippo. Activities will be carried out from July-December 2023 with the target participants being all students in grades 1-6 in Presidential Instruction 5/81 Passippo and specifically grades 8 at junior high school level. The implementation of this program is carried out through 5 stages, namely orientation and introduction of students to the Field Supervisor, explanation of KM6 activities, coordination with the district office and school principal, presentation of the work program and monitoring and evaluation. Campus teaching activities prove the importance of direct interaction between supervisor and students. This allows for the exchange of ideas, clarification of concepts, and more in-depth discussion of the material. The use of the latest facilities and technology makes a major contribution to improving the quality of teaching. The use of multimedia, interactive classrooms, and online resources can enrich students' learning experiences.
Pemanfaatan Model Project Based Learning  Untuk  Penguatan Keterampilan Dan Kreativitas Mahasiswa Terhadap Instrumentasi Dan Alat Ukur Sutarsi Suhaeb; Ahmad Risal; Nurfauziah Nurfauziah; Wahyu Hidayat M; Hamda Hamda
Jurnal Pengabdian Masyarakat Vol. 4 No. 1 (2026): Jurnal Pengabdian Masyarakat (Abdimas)
Publisher : Jurusan Pendidikan Teknik Elektro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59562/abdimas.v4i1.13042

Abstract

Kegiatan pengabdian kepada masyarakat ini dilatarbelakangi oleh masih terbatasnya keterampilan mahasiswa Pendidikan Teknik Elektronika Universitas Negeri Makassar dalam merancang sistem instrumentasi dan alat ukur secara mandiri. Mahasiswa umumnya telah memahami konsep dasar pengukuran, sensor, dan alat ukur, namun masih mengalami kesulitan dalam mengintegrasikan teori ke dalam rancangan alat, memilih komponen yang sesuai, melakukan pengujian, serta mengembangkan ide kreatif menjadi produk nyata. Kegiatan ini bertujuan untuk memperkuat keterampilan merancang dan kreativitas mahasiswa melalui pelatihan Project Based Learning. Metode pelaksanaan meliputi tahap persiapan, pemberian materi, pre-test, praktik pengembangan proyek, pendampingan, presentasi hasil, serta post-test. Mahasiswa dibagi ke dalam beberapa kelompok untuk mengembangkan proyek instrumentasi dan alat ukur berbasis sensor dan mikrokontroler, seperti sistem monitoring suhu dan kelembapan, alat ukur intensitas cahaya, sistem monitoring ketinggian air, alat monitoring kualitas udara, dan sistem pengukuran jarak digital. Hasil kegiatan menunjukkan adanya peningkatan pemahaman peserta dari nilai rata-rata pre-test sebesar 60,0 menjadi 87,6 pada post-test. Selain itu, hasil pengembangan proyek mencapai rata-rata keberhasilan 89,2% dan penilaian presentasi memperoleh skor rata-rata 90,6. Dengan demikian, pelatihan Project Based Learning efektif dalam meningkatkan keterampilan merancang, kreativitas, kolaborasi, dan kemampuan pemecahan masalah mahasiswa dalam bidang instrumentasi dan alat ukur.
Co-Authors Anita Candra Dewi Asmaul Husnah Nasrullah Aulia Sabril Della Fadhilatunisa Faisal Najamuddin Hamda Hamda Labusab Labusab Muhammad Akil Ninik Rahayu Ashadi Nurfauziah Nurfauziah Sutarsi Suhaeb Wahyu Hidayat M