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Dhani, Harsa
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Agriculture, Biological Sciences & Forestry Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Engineering a multifunctional chopper: enhancing livestock grass preparation Dhani, Harsa
Mechanical, Energy and Material (METAL) Vol. 3 No. 1 (2025): Juni: Mechanical, Energy and Material (METAL)
Publisher : Universitas Katolik Widya Karya Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/metal.v3i1.130

Abstract

Indonesia is one of the countries that has great potential in the field of animal husbandry, currently farmers in Indonesia still use traditional methods to produce animal feed such as human-powered grass chopping which often faces obstacles in the form of limited labor, low time efficiency, and high operational costs. therefore, new technology is needed that can help farmers overcome these problems. The planning of a livestock grass chopping machine is driven by the need for increased efficiency and productivity in the livestock sector. This grass chopping machine is expected to be able to chop grass efficiently and effectively, produce quality animal feed and reduce the time and workload of farmers. there are several main parts in making a grass chopping machine, namely the frame, the engine drive motor dynamo, the cutting blade, the pulley, the V-belt and the casing. on this machine, 5 grasses are needed for one chopping which requires 1424.13 watts or 1.423 Kw of engine power, with a shaft diameter of 15.82 mm, a pulley diameter for the chopping shaft of 200 mm and a v-belt length of 54.396 in. The casing material used in this planning is aluminum alloy. While the cutting blade material is stainless steel.
Pengujian Kinerja Mesin Singulasi Benih Kedelai Berbasis Disk Vertikal Dengan Pengaturan Kecepatan Variabel Menggunakan Motor Stepper Dhani, Harsa; Puri Nurani, Maria
Rona Teknik Pertanian Vol 18, No 2 (2025): Volume No. 18, No. 2, Oktober 2025
Publisher : Department of Agricultural Engineering, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17969/rtp.v18i2.49251

Abstract

Abstrak. Guna mengoptimalkan penggunaan benih yang merupakan komponen biaya input terbesar dalam budidaya kedelai, diperlukan mesin singulasi benih yang mempunyai unjuk kerja tinggi, terjangkau, dan sesuai untuk kondisi di Indonesia. Tujuan penelitian ini adalah merancang dan mengevaluasi kinerja mesin singulasi benih kedelai dengan disk vertikal berdiameter 118 mm yang dilengkapi seed cell sesuai dimensi rata-rata benih kedelai (8,8 mm 7,4 mm 6 mm). Bentuk seed cell disesuaikan dengan sifat gesekan benih kedelai dan permukaan PETG sebagai material disk. Desain disk vertikal dapat meminimalkan kerusakan benih saat pengambilan, dibandingkan desain dengan screw. Mesin singulasi terdiri atas hopper penampung benih dan kontainer pengambilan benih satu per satu oleh seed cell di sekeliling disk. Disk digerakkan motor stepper dengan kecepatan putar variabel yang dikontrol presisi oleh mikrokontroler Arduino Uno R3. Evaluasi dilakukan pada kecepatan putar disk 40, 35, 30, 25, 20, 15, 10, dan 5 rpm. Hasil terbaik mencapai 100% singulasi atau Miss Index nol pada rentang 5 rpm kebawah dengan kecepatan linier permukaan disk 0,11 km/jam atau kurang. Penanaman benih presisi ini menghilangkan benih multiple dan missing pada skala laboratorium.Performance Testing of a Vertical Disc-Based Soybean Seed Singulation Machine with Variable Speed Control Utilizing a Stepper MotorAbstract.To optimize the use of seeds, which are the largest input cost component in soybean cultivation, a seed singulation machine with high performance, affordability, and suitability for conditions in Indonesia is required. The objective of this research is to design and evaluate the performance of a soybean seed singulation machine with a 118 mm diameter vertical disk equipped with seed cells according to the average dimensions of soybean seeds (8.8 mm 7.4 mm 6 mm). The shape of the seed cell is adjusted to the frictional properties of soybean seeds and the PETG surface as the disk material. The vertical disk design can minimize seed damage during pickup, compared to a screw design. The singulation machine consists of a seed hopper and a container for individual seed pickup by the seed cells around the disk. The disk is driven by a stepper motor with variable rotational speed precisely controlled by an Arduino Uno R3 microcontroller. Evaluation was conducted at disk rotational speeds of 40, 35, 30, 25, 20, 15, 10, and 5 rpm. The best result achieved 100% singulation or a zero Miss Index in the range of 5 rpm and below, with a disk surface linear speed of 0.11 km/h or less. This precision seed planting eliminates multiple and missing seeds on a laboratory scale.
Co-Authors Puri Nurani, Maria