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All Journal Jurnal Otomasi Kontrol dan Instrumentasi Jurnal Abdi Masyarakat Indonesia Journal of Renewable Energy, Electrical, and Computer Engineering Newton-Maxwell Journal of Physics Electrician : Jurnal Rekayasa dan Teknologi Elektro AMMA : Jurnal Pengabdian Masyarakat JPEMAS: Jurnal Pengabdian Kepada Masyarakat
Harahap, Al Barra
Unknown Affiliation
Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Physics Public Health

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Pemanfaatan Panel Surya sebagai Penerangan Jalan Umum (PJU) di Kampung Wisata Agrowidya, Rajabasa Jaya, Lampung Ilham Dwi Arirohman; Putty Yunesti; Rihardian Maulana Wicaksono; Al Barra Harahap; Afit Miranto; Devy Arysandi; Yulianti Fatmawati; Rahmat Ramadhan Wahab
Jurnal Abdi Masyarakat Indonesia Vol 1 No 2 (2021): JAMSI - November 2021
Publisher : CV Firmos

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.043 KB) | DOI: 10.54082/jamsi.131

Abstract

Kampung Agrowidya adalah salah satu kampung percontohan untuk wisata agro berbasis pertanian dan perikanan. Kampung Agrowidya yang terletak di Rajabasa Jaya memiliki sistem bertanam hidroponik dan budidaya ikan tawar pada kolam terpal. Namun, kondisi pencahayaan Kampung Agrowidya khususnya pada malam hari masih sangat minim. Berdasarkan fakta ini dan hasil audiensi dengan masyarakat, maka dilakukan upaya pemenuhan kebutuhan pencahayaan jalan umum di Kampung Agrowidya dengan memanfaatkan tenaga surya. Tahapan kegiatan dimulai dengan pengukuran dan analisis tingkat iluminansi dan dimensi jalan. Hasil analisis menunjukkan bahwa kondisi pencahayaan di jalan utama Kampung Agrowidya masih berada di bawah batas yang direkomendasikan SNI 7391:2008. Dilanjutkan pemodelan menggunakan DIALux dengan tiga jenis lampu LED Philips BRP130, BRP052, dan BRP042. Hasil opsi pemodelan yang paling sesuai dan memenuhi SNI 7391:2008 adalah lampu LED Philips BRP130 dengan tinggi tiang 5 meter dan sudut kemiringan 15o dengan menggunakan suplai listrik dari solar panel 210 Wp dan media penyimpanan energi 140 Ah. Penyuluhan tentang penenarangan jalan umum tenaga surya dilakukan untuk membentuk kader masyarakat yang mampu memanfaatkan energi terbarukan khususnya energi surya. Hasil kegiatan pengabdian pada masyarakat ini memberikan hasil berupa instalasi penerangan jalan umum tenaga surya dan peningkatan pemahaman masyarakat Kampung Agrowidya tentang manfaat penerangan jalan umum tenaga surya.
Alat Pelacak dan Pengaman Kendaraan Bermotor dengan Kendali Pesan Singkat Berbasis Arduino dan SIM900 Al Barra Harahap
Newton-Maxwell Journal of Physics Vol. 2 No. 1: April 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (474.031 KB) | DOI: 10.33369/nmj.v2i1.15328

Abstract

Tindak kejahatan pencurian kendaraan bermotor, khususnya roda dua termasuk dalam kategori kasus yang tinggi ditangan kepolisian, jumlah kasus juga meningkat di masa pandemi covid-19 ini. Kendaraan bermotor roda dua sendiri sangat rentan dicuri dengan merusak lubang kunci motor. Oleh sebab itu, dilakukanlah penelitian ini yang bertujuan untuk merancang dan membangun alat pelacak dan pengaman kendaraan bermotor yang mudah dan murah. Alat yang dibuat berbasis mikrokontroler Arduino UNO dengan menggunakan modul SIM900 untuk komunikasi dengan pengguna. Sehingga, apabila terjadi pencurian, pengguna cukup mengirimkan SMS ke alat untuk mengaktifkan fitur GPS, alarm dan pemutusan daya listrik di kendaraan.
Mesin Ekstrusi Filamen 3D Printer Sederhana Sebagai Alternatif Daur Ulang Limbah Botol Plastik dengan Kendali PID Harahap, Al Barra; Khoirunisa, Vera; Putra, Septia Eka Marsha
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 19 No. 2 (2025)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v19n2.2798

Abstract

Pelatihan Perakitan Robot Line Follower Pada Siswa SMAN 6 Metro Lampung Al Barra Harahap; Listra Yehezkiel Ginting; Nike Dwi Grevika Drantantiyas; Amrina Mustaqim; Hesti Wahyu Handani
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 11 : Desember (2025): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

 Robotic system is a combination of various elements working together to control the behaviour, movement, and decisions made by the robot. The components are made of hardwares, softwares, user interface,  communication, mechanical structure, energy source, and safety. Using this technology, students of SMAN 6 Metro can stay up to date with recent technologies, and can implement it to solve problems as necessary. The aim for this community service is to introduce knowledge about the utility of robotic systems related to the components of the system and its implementation. The target of this event is students of SMAN 6 Metro and also the university students attending this event. Introduction starts with definition of robotic systems, components of a robot, methodology, and implementation. As a result of this event, we find that the knowledge of the students of SMAN 6 Metro seem to be improving significantly. The experience proved to be a fascinating experience for the students involved.
Sistem Inkubasi Mikroklimat dengan Kendali Proporsional dan Pemantauan IoT untuk Aklimatisasi Bibit Dendrobium Al Barra Harahap; Vera Khoirunisa; Nauval Abi Sopian; Ahmad Rasya Mahfud
Jurnal Otomasi Kontrol dan Instrumentasi Vol 18 No 2 (2026): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2026.18.2.1

Abstract

Dendrobium orchid seedlings transferred from in vitro culture require stable microclimate conditions during acclimatization, particularly temperature, humidity, and photoperiod regulation, to improve adaptation to non-aseptic environments. However, quantitative evaluations of laboratory-scale incubation systems under constrained actuation conditions remain limited. This study presents a compact microclimate incubation system implementing proportional-only temperature control using fan-based unidirectional cooling, scheduled irrigation and lighting, and real-time IoT monitoring through a Node-RED dashboard. The system was developed using an ESP32-S3 controller and DHT22 sensors in a semi-enclosed multi-tier rack with a capacity of 360 seedling pots. Sensor calibration showed strong agreement with a reference instrument, achieving R² > 0.99 for temperature and humidity measurements. Temperature regulation at a reference value of 29.3 °C achieved a steady-state mean absolute error of 0.1 °C within a deviation range of −0.5 to +0.1 °C during 572 minutes of continuous operation, while maintaining all measurements within ±2 °C of the thermal tolerance range for Dendrobium acclimatization. Increasing proportional gain from  = 1000 to 2550 reduced the reference entry time from 362 s to 208 s. These findings demonstrate that proportional-only control with constrained cooling actuation can provide stable temperature regulation for compact indoor incubation systems.
Peningkatan Kompetensi Siswa SMK Trisakti Jaya Bandar Lampung melalui Pelatihan Robot Line Follower Hesti Wahyu Handani; Sefrani IG Siregar; Al Barra Harahap; Vera Khoirunisa; Christio Revano Mege; Ferizandi Qauzar Gani
JPEMAS: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2026): JPEMAS: Jurnal Pengabdian Kepada Masyarakat
Publisher : Yayasan Pendidikan Tanggui Baimbaian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71456/adc.v4i2.1816

Abstract

Kegiatan pengabdian kepada masyarakat ini dilatarbelakangi oleh masih terbatasnya pemahaman dan keterampilan siswa SMK dalam bidang robotika, khususnya perakitan dan pemrograman robot line follower, serta belum optimalnya pembelajaran berbasis praktik yang sesuai dengan kebutuhan industri manufaktur dan otomasi di era digital. Tujuan kegiatan ini adalah untuk meningkatkan literasi teknologi, pemahaman konsep elektronika, dan keterampilan praktis siswa melalui pelatihan perakitan robot line follower berbasis pendekatan STEM (Science, Technology, Engineering, and Mathematics). Metode yang digunakan meliputi ceramah, diskusi interaktif, praktik langsung perakitan robot line follower menggunakan mikrokontroler Arduino, sensor inframerah (IR), dan motor driver L298N, serta evaluasi melalui pretest dan posttest terhadap 65 siswa jurusan Teknik Komputer dan Jaringan SMK Trisakti Jaya Bandar Lampung. Hasil kegiatan menunjukkan peningkatan signifikan pada seluruh indikator pemahaman, yaitu pemahaman prinsip kerja sensor IR meningkat dari 35 menjadi 60 peserta (71,43%), pemrograman mikrokontroler Arduino dari 28 menjadi 58 peserta (107,14%), konfigurasi motor driver dari 22 menjadi 55 peserta (150,00%), serta perakitan sistem robotika dari 18 menjadi 62 peserta (244,44%). Selain itu, peserta mampu merakit dan mengoperasikan robot line follower secara mandiri untuk mengikuti lintasan garis hitam pada permukaan putih. Hasil ini menunjukkan bahwa pendekatan pelatihan yang mengintegrasikan teori dan praktik secara langsung efektif dalam meningkatkan kompetensi teknis dan literasi digital siswa, sehingga kegiatan ini berkontribusi dalam mendukung penguatan pendidikan vokasi yang adaptif terhadap perkembangan teknologi robotika dan kebutuhan dunia kerja.
An IoT-Enabled Ebb-and-Flow Cultivation System with Fan-Based Ventilation Control for Bucephalandra sp Al Barra Harahap
Electrician : Jurnal Rekayasa dan Teknologi Elektro Vol. 20 No. 3 (2026)
Publisher : Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/elc.v20n3.3163

Abstract

Bucephalandra sp. is a high-value aquatic ornamental plant whose cultivation in tropical climates such as Lampung is constrained by ambient temperatures that frequently exceed the 22 to 28 °C physiological range. Existing IoT and control studies for plant environments focus predominantly on common horticultural crops; the combination of ebb-and-flow subirrigation, closed-loop thermal control, and edge-node IoT monitoring on a single embedded platform remains unreported for this species. This study designed and evaluated an IoT-enabled ebb-and-flow cultivation system for Bucephalandra sp. on an ESP32-S3, integrating proportional fan ventilation control at a 26 °C setpoint with RTC-scheduled flood-drain cycling and Node-RED monitoring on a Jetson Nano edge node. After linear-regression calibration, the DHT22 achieved 99.16 % temperature accuracy and 96.14 % humidity accuracy; the DS18B20 achieved 99.22 % water-temperature accuracy. The optimal controller configuration (Kp = 500) produced 1.54 % overshoot without sustained oscillation. The flood-drain schedule maintained timing within 1 to 2 s of the reference clock, and HTTP telemetry to Google Sheets achieved 99.4 % packet storage success. One-month seedling survival of 95.9 % (209/218) indicates that the integrated platform sustained viable cultivation conditions under the tested configuration
SG3525-EGS002 Pure Sine Wave Inverter Efficiency Characterization for Growlight Applications Al Barra Harahap; Vera Khoirunisa; Rangga Yuanas; Rahmat Hidayat
Journal of Renewable Energy, Electrical, and Computer Engineering Vol. 6 No. 2 (2026): September 2026
Publisher : Institute for Research and Community Service (LPPM), Universitas Malikussaleh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jreece.v6i1.27204

Abstract

Pure sine wave (PSW) inverters based on two-stage SG3525 push-pull and EGS002 sinusoidal pulse width modulation (SPWM) topologies are commonly used in battery-sourced off-grid agricultural systems, but their load-resolved performance under LED growlight loading remains insufficiently characterized. This study aimed to design, fabricate, and experimentally evaluate a two-stage single-phase PSW inverter supplied by a 12 V lead-acid battery. The first stage used an SG3525-driven push-pull DC-DC converter operating at 35 kHz with an ETD42 ferrite-core transformer to generate a 380 V DC bus. The second stage used an EGS002 SPWM module driving an IRF460 H-bridge and LC output filter to produce a 220 V, 50 Hz AC output. Efficiency testing was performed at eleven nominal LED growlight load points from 0 W to 500 W. At each point, input-output electrical quantities, waveform parameters, and operating temperature were recorded after steady-state operation. The inverter reached a peak efficiency of 87.80% at the 300 W nominal LED rating, while the 250–300 W range maintained efficiency above 84%. Mean waveform amplitude error relative to the theoretical sinusoidal reference was 1.59%, voltage regulation was 2.52%, and output frequency remained stable at 50 Hz. Operating temperature increased from 27°C at no load to 34°C at the 500 W nominal LED rating. These results indicate that the inverter is suitable for LED-driver-based growlight loading within the characterized operating range and provides baseline data for future component-level thermal evaluation.
Co-Authors Afit Miranto Ahmad Rasya Mahfud Amrina Mustaqim Arirohman, Ilham Dwi Christio Revano Mege Devy Arysandi Ferizandi Qauzar Gani Hesti Wahyu Handani Khoirunisa, Vera Listra Yehezkiel Ginting Nauval Abi Sopian Nike Dwi Grevika Drantantiyas Putty Yunesti Rahmat Hidayat Rahmat Ramadhan Wahab Rangga Yuanas Rihardian Maulana Wicaksono Sefrani IG Siregar Septia Eka Marsha Putra Vera Khoirunisa Vera Khoirunisa Yulianti Fatmawati