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Journal : Jurnal Sains dan Teknologi

Perancangan Mesin Pelontar Bola Tennis Berbasis Remote Control Abdul Tahir; Musakirawati Musakirawati
INSOLOGI: Jurnal Sains dan Teknologi Vol. 1 No. 5 (2022): Oktober 2022
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v1i5.871

Abstract

All of tennis athletes can play tennis properly because they practice for hours, months and even years. There are many ways that can be done to practice playing tennis, namely by using a wall or with the help of a ball throwing machine. Several tennis ball throwing machines developed by researchers have been found, although they are not optimal. Basically, the principle of throwing a tennis ball is almost the same as throwing a table tennis ball, namely using an electric motor as a trigger for the throwing motion. For reference and source of knowledge, the researchers conducted a perc ejection machine by combining a machine with a joystick-based remote control using an Arduino type microcontroller, an electric motor type driving motor. With this combination the machine can be adjusted for vertical and horizontal movement and can adjust the speed of the ejector by programming on the side of the microcontroller. The results of the design are drawings of arrangement, drawings of parts, sizes and materials used and drawings of a three-dimensional machine with a size of 100 cm x 70 cm x 140 cm.
Prototype Perkakas Mekanik Berbasis Benda Kerja Praktik Mahasiswa Abdul Tahir; Edi Rande Padang; Harjuma Harjuma; Fitriana Firdaus
INSOLOGI: Jurnal Sains dan Teknologi Vol. 2 No. 1 (2023): Februari 2023
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v2i1.1655

Abstract

The learning process for vocational higher education applies a composition of 30 percent theory and 70 percent practice. A larger composition of practical learning will guarantee an increase in the quality of students' expertise, because in practical learning students practice in workshops that produce workpieces in the form of products that have economic value. Workpieces are made by manufacturing processes using industrial-based machines such as lathes, milling machines, drills, grinders, and others. Practical work in the workshop is carried out for one week or the equivalent of 38 hours. The quality of the workpiece is also a parameter for student assessment which will become one of the semester graduation requirements so as to produce quality students in their fields. However, there are problems in practicum activities in the vocational field that are most experienced by almost all vocational education institutions, namely workpiece waste. Vaccination education managers must think about how to optimize or utilize work objects resulting from student practice. Not a few students' work is ignored or thrown away and not utilized. This is the background of this research. This study aims to make mechanical device products that have economic value by utilizing students' work. The product manufacturing method begins with data collection, planning and drawing, the manufacturing process, assembling, and testing. From the results of the tool making, 4 types of prototype products were obtained, namely table vise, bending tools, C clamps, mini press tools. From the four products made, it can be concluded that the tool manufacturing process went according to plan and optimal results were obtained.