Volume 7, Issue 11, November – 2022 International Journal of Innovative Science and Research Technology ISSN No:-2456-2165 IJISRT22NOV832 www.ijisrt.com 905 Design of Cultivate Fish Grader Machine Ridwan Jakarta Technical University of Fisheries Indonesia AUP Polytechnic Graduate ProgramIndonesia I Nyoman Soeyasa Jakarta Technical University of Fisheries Indonesia AUP Polytechnic Graduate Program Indonesia Sinar Pagi Sektiana Jakarta Technical University of Fisheries Indonesia AUP Polytechnic Graduate Program Indonesia Abstract:- Fish grading is carried out to maintain fish size uniformity being farmed. In general, fish grading is still done traditionally. Traditional fish grading is estimated to have low effectiveness, including long grading times, low accuracy rates, andhigh fish stress levels. The purpose of this research is to design a fish grader machine in a prototype model and determine the effectiveness of the fish grader machine that was designed. Design of fish grader machine includes designing, manufacturing and testing the effectiveness of fish grader machines. The effectiveness of the fish grader machine was observed based on length of time grading and counting, the accuracy of fish size uniformity levels, and accuracy of fish counting levels. The design of the fish grader machine consists of four main components, namely a hopper as a fish motion feeder that was equipped with a door stopper, a rotating conical disc driven by a driving motor as a driving force and directing fish to the grader gap, a grader plate which was made in a circle as a grading breaker, and a container count as a fish count line that was equipped with infrared sensor based on a microcontroller (Arduino). The results of testing the effective fish grader machine obtained that the length of time for grading and counting was 0.54 seconds/fish, the accuracy of fish size uniformity was 94.40%, and the accuracy of fish counting was 94.20% Keywords:- Fish Grading; Fish Grader Machine; The Design; Uniformity. I. INTRODUCTION Maintaining the uniformity of fish size is important during the fish farming period. Uniform fish size can optimize growth and prevent cannibalism [4]. The uniformity size of fish being farmed can be achieved by fish grading. Fish grading is still mostly done traditionally by using simple grading tools such asperforated containers or containers with slotted rows [7;8]. Fishgrading is also usually accompanied by counting the number offish based on each fish size. According to Sapriansyah et al. (2018), Traditional fish grading and counting have many weaknesses, among others long grading time, low accuracy levels, and high fish stress levels due to inconvenient treatment for the fish [8]. The traditional fish grading and counting are estimated to have low effectiveness because it is very susceptible to human error, where the human factor greatly determines the results of fish grading and counting [7]. Based on the information above, it is necessary to make an effort to design an effective fish grader machine and be able toovercome traditional grading problems as has been done by fish farmers so far. II. RESEARCH METHODS A. Tools and Materials The tools used in the design of this fish grading machine include electric welding machines, acrylic bending tools, drilling machines, grinding machines, and other technical tools. While the materials used are materials for the manufacturing offish grading machine components with the type of material based on the regulation of the National Standardization Agencyof the Republic of Indonesia number 14 of 2019 concerning the conformity assessment scheme against Indonesian national standards in the agricultural, plantation, livestock and fishery sectors. The materials used are materials that are not dangerous, do not cause physical damage and contamination to fish (non-corrosive), and are easy to clean [1] The types of materials used include UNP iron (U-Normal Profile) for the manufacture of the frame, stainless steel plate for the manufacture of lanes and the top cover of the frame, acrylic for the manufacture of hoppers, driving fins on the cone plate, grader plates, bulkheads on the top cover of the frame, and counting containers, Fiberglass and resins for the manufacture of cone discs, and aluminium sheet for coating the cone discs. B. Design The design of fish grading machine components, including: 1. Design of fish grader component, consisting of hopper design as a container and motion feeder of fish before being graded, design of the rotating conical disc as a component to push and direct fish to grader gap according to its size, and design of grader plate as a fish grading breaker accordingly with the size. 2. The design of fish counter component, consisting of a counting container, and the design of an automatic counting system, namely the sensorial counting based on a microcontroller (Arduino).