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All Journal Jurnal Pendidikan Vokasi SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Jurnal Rekayasa Mesin Jurnal Pendidikan Teknik Mesin Jurnal Pendidikan Informatika dan Sains Wikrama Parahita : Jurnal Pengabdian Masyarakat Jurnal Teknovasi : Jurnal Teknik dan Inovasi Mesin Otomotif, Komputer, Industri dan Elektronika SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ JURNAL KAJIAN TEKNIK MESIN Jurnal Ilmiah Ilmu dan Teknologi Rekayasa Sprocket : Journal of Mechanical Engineering JURPIKAT (Jurnal Pengabdian Kepada Masyarakat) Jurnal Mesin Nusantara Jurnal Abdi Masyarakat Indonesia Automotive Experiences Tedc IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Room of Civil Society Development Room of Civil Social Development Jurnal Pendidikan Teknik Mesin
Roni Suhartono
Politeknik Negeri Subang
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Development of an IoT based automatic fish feeding system for Nile tilapia culture in a recirculating aquaculture system Slamet Rahayu; Mohammad Iqbal; Roni Suhartono; Bagus Rino Arfian
Jurnal Pendidikan Informatika dan Sains Vol. 15 No. 1 (2026): Jurnal Pendidikan Informatika dan Sains
Publisher : Universitas PGRI Pontianak

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31571/saintek.v15i1.10276

Abstract

Feed is the single largest cost component in Nile tilapia aquaculture, frequently accounting for more than sixty percent of total production costs. However, in most Indonesian smallholder operations, feed is still dispensed manually based on visual estimation. Existing Internet of Things feeders reported in the literature generally automate the timing of feed delivery but do not provide feedback on the actual amount of feed dispensed. They are also rarely evaluated in a Recirculating Aquaculture System, where uneaten feed increases the load on the biofilter. This study addresses this limitation by designing, implementing, and experimentally evaluating an Internet of Things based automatic feeder with closed loop gravimetric dosing integrated into a Recirculating Aquaculture System for Nile tilapia culture. The system combines an ESP32 microcontroller, a load cell sensor, a servo actuated feed gate, a BTS7960 controlled direct current auger, and a real time clock scheduling module. A web based interface enables real time adjustment of feed ration and feeding schedule. The feeder was evaluated over ten dispensing cycles using a target ration of fifty grams, and its performance was compared with manual feeding during a rearing trial. Gravimetric dosing achieved an average error of two point four percent and an average dosing accuracy of ninety seven point six percent, with an average deviation of one point two grams per feeding cycle. During the rearing trial, the experimental group consumed twelve kilograms of feed, whereas the control group consumed fourteen kilograms, representing a feed reduction of fourteen point three percent. The experimental group also achieved a feed conversion ratio of one point four six, compared with two point zero zero in the control group. Survival reached ninety two point five percent in the experimental group and eighty one percent in the control group. Mean individual body weight increased from two hundred forty five grams in the control group to two hundred eighty grams in the experimental group. Size uniformity also improved, with the coefficient of variation decreasing from fifteen percent to eight percent. These findings demonstrate that integrating gravimetric feedback into an Internet of Things based feeder provides measurable feed savings beyond scheduling automation alone and offers a practical and appropriate technology solution for small scale Nile tilapia production in Recirculating Aquaculture Systems.
DESAIN MESIN PEMERAH SUSU SAPI PORTABLE MODEL BODYPACK Roni Suhartono; Adhan Efendi; Ferdi Faturohman
Jurnal Pendidikan Teknik Mesin Vol. 6 No. 2 (2019): Jurnal Pendidikan Teknik Mesin
Publisher : Program Studi Pendidikan Teknik Mesin Fakultas Keguruan dan Ilmu Pendidikan Universitas Sriwiajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jptm.v6i2.9641

Abstract

Penelitian ini jenis penelitian research and development. Data yang didapat dianalisis secara kualitatif dekskriptif. Tujuan penelitian mendesign dan membuat suatu mesin pemerah susu sapi portable yang efektif, efisien, dan murah untuk peternak skala kecil di daerah pergunungan. Mesin pemerah susu sapi ini diharapkan dapat membantu proses pemerahan susu sehingga produksi susu sapi daerah Kabupaten Subang dapat meningkat secara signifikan. Hasil penelitian menunjukan bahwa: (1)proses desain melalui tahapan analisis kebutuhan, konsep desain, perwujudan desain, detail desain, dan pembuatan prototipe mesin; (2) mesin pemerah susu portable model bodypack dapat digunakan untuk proses pemerahan susu sapi.
Pengaruh Variasi Suhu Penekanan Terhadap Kualitas dan Sifat Mekanik Serat Daun Nanas Berbasis Resin Epoksi untuk Aplikasi Komposit Roni Suhartono; Yadi Hikmah Setiana; Didin Komarudin
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.361

Abstract

This study aims to evaluate the effect of varying pressing times at a constant temperature, using the hot-press method and the same resin mixture, on the material's quality and mechanical properties. Tensile testing was conducted in accordance with ASTM D3039 using specimens measuring 250 × 20 × 2 mm to ensure accurate mechanical measurements on thin laminates. The process began with selecting healthy pineapple leaves, followed by extrusion. A chemical treatment was then applied by immersing the fibers in a 5% NaOH solution for 2 hours. The fibers were subsequently mixed with resin and pressed for 20, 30, and 40 minutes at 100 °C. The results showed that the first sample, pressed for 40 minutes, achieved a tensile strength of 55.25 MPa. The second sample, pressed for 30 minutes, reached 50.38 MPa, while the third sample, also pressed for 30 minutes, achieved 47.8 MPa. The 40-minute pressing time can be considered the recommended working point, as evidenced by the highest tensile strength of 55.25 MPa.
Analisis Kekuatan Mata Pisau Pada Mesin Pengolah Sabut Kelapa Ayu Audia; Roni Suhartono; Masri Bin Ardin
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.246

Abstract

The design of a coconut fiber processing machine with a conveyor system requires special attention to the performance of the blade, which serves as the main component in the chopping process. Structural failure of the blade can significantly impact machine efficiency and operator safety. Therefore, modeling and structural strength analysis using computer-aided analysis software was conducted to validate the reliability of the blade design before manufacturing. The study focused on Von Mises stress, displacement, and safety factor, considering operational loads such as bending, torsion, tension, and compression applied to the shaft. The simulation results indicate that both stress and deformation remain within safe limits, with a safety factor value that supports long-term operational use. Based on these findings, the blade design is considered structurally secure and suitable for use in a coconut fiber chopping machine.
Co-Authors Adhan Efendi Adhan Efendi Adhan Efendi Adhan Aditya Nugraha ADITYA NUGRAHA Agung Pratomo Agus Haris Abadi Ayu Audia Azhis Sholeh Buchori Bagaskara, Alvin Gumilang Bagus Rino Arfian Didin Komarudin Efendi, Adhan Efendi, Adhan Efendi, Adhan Elfrida Ratnawati Enceng Sobari, Enceng Fathurohman, Ferdi Fendy Thomas Fenny Aprilliani Ferdi Faturohman Firmansyah Sulistiyono, Firmansyah Hamid Nasrullah Kamaludin, Muhamad Maolana Yusuf Masri Bin Ardin Mohammad Iqbal Nur Muhammad Malikul Adil Nurizzi Rifqi Ferdian Raden Naisha Salsabila Saputro, Rian Dwi Aji Setiana, Yadi Hikmah Slamet Rahayu Soeharto Soeharto Sukowiyono . Sunaryo . Susilawati, Susilawati Yadi Hikmah Setiana Yohanes Sinung Nugroho Yudiyanto, Oyok ‪Irna Dwi Destiana