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Design and Implementation of an Arduino Uno-Based RPM Control System for a Treadmill Ana Uzla BatuBara; Berkat Panjaitan; Agusto Feliks Simanjuntak
International Journal of Health Engineering and Technology Vol. 4 No. 2 (2025): IJHET JULY 2025
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijhet.v4i2.326

Abstract

This research presents the design and development of an RPM (Revolutions Per Minute) controller for a treadmill using Arduino UNO. The treadmill is a medical device commonly used to evaluate cardiac performance under increasing levels of physical activity. Its primary function is to monitor how the heart responds to progressively intense exercise. In this design, the treadmill is powered by an AC motor, with RPM speed regulated through a timer and driven by a servo motor programmed via Arduino UNO. The system is designed to display RPM values of 550, 750, 950, and 1100 on the interface. This development aims to support more accurate and controlled cardiac stress testing through precise speed adjustments.
The Application Of The Laplace Transform In The Heat Equation Ana Uzla BatuBara
International Journal of Health Engineering and Technology Vol. 1 No. 6 (2023): IJHET-MARCH 2023
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (759.785 KB) | DOI: 10.55227/ijhet.v1i6.110

Abstract

The one dimensional of homogeneous heat equation is two ordinary partial differential equations which general form , so needs solution. The one dimensional of homogeneous heat equation the method is ever been solved by Fourier series and Fourier Integrals. The other method used to in solving one dimensional of homogeneous heat equation is Laplace Transform, which is used to transform into ordinary differential equation is one dimension  for initial conditions . Inverse general solution that satisfies boundary conditions  is found, for every t and initial conditions  that have been transform is . From the result, it an obtain temperature on the poin x in the solid at time t.
Quizwhizzer Learning Media Training On Interest In Learning Mathematics In Elementary School Students Ana Uzla BatuBara; Bambang Suryanto; Ulfa Hanim
International Journal of Community Service Implementation Vol. 2 No. 1 (2024): IJCSI JUNE 2024
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijcsi.v2i1.218

Abstract

Mathematics is an issue that we cannot separate from daily life. The characteristics of elementary school mathematics learning aim to develop students' logical, analytical, systematic, critical, and creative thinking abilities, as well as to foster a habit of working together in solving problems. Mathematics learning should be meaningful, emphasizing understanding of the material and its application rather than rote memorization. In meaningful learning, students learn mathematics starting from the process of forming a concept and then trying to apply and manipulate these concepts in new problems. Many students do not like mathematics. They consider mathematics to be the most difficult subject, leading to a sense of difficulty even before the lesson begins. Therefore, it is necessary to implement learning methods that motivate students to improve their academic performance. To assist students in enhancing their mathematics learning, educational media can be utilized, one of which is the Quiz whizzer Learning Media. Learning media serve to convey messages and can stimulate students' thoughts, feelings, and motivation, thereby encouraging the learning process. Media can take the form of teaching aids and tools. One of the e-learning media that can be used is the Quiz whizzer application.
The Implementation of the SOLE (Self-Organized Learning Environment) Learning Model in Answering Big Questions in Algebra Topics Ana Uzla BatuBara; Tuful Zuchri Siregar
International Journal of Community Service Implementation Vol. 3 No. 1 (2025): IJCSI JUNE 2025
Publisher : CV. AFDIFAL MAJU BERKAH

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55227/ijcsi.v3i1.318

Abstract

The SOLE learning model facilitates students to learn independently through exploration and group discussion, with a focus on solving relevant and challenging problems. This community service activity aims to improve the competencies of both teachers and students in mathematics learning, particularly in algebra, through the implementation of the SOLE (Self-Organized Learning Environment) model based on Big Questions. The SOLE model is designed to encourage students to learn independently and collaboratively through open-ended questions that stimulate critical thinking and problem-solving skills. This activity was conducted at a partner junior high school, involving both teachers and students as participants in training and mentoring sessions. The methods employed in this program included the dissemination of the SOLE and Big Question concepts, training in lesson planning, and guided classroom implementation. The results of the activity showed an improvement in teachers' understanding of innovative teaching strategies, as well as positive responses from students, who demonstrated active engagement, increased curiosity, and better conceptual understanding of algebra. This community service initiative provides a tangible contribution to strengthening teachers’ capacity in designing meaningful instruction and in creating a learning environment that promotes student autonomy and creativity. The application of the SOLE model based on Big Questions has proven to be an effective approach to delivering mathematics instruction in a more contextualized and enjoyable manner.