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All Journal Pillar of Physics: Jurnal Berkala Ilmiah Fisika
- Yulkifli
Department of Physics, Universitas Negeri Padang, Jl. Prof. Dr. Hamka Air Tawar Padang 25131
Earth & Planetary Sciences Materials Science & Nanotechnology Physics

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Design and Construction of Modeling Tool of Linear Motion Experiment Assisted Toy Cars with Remote Control for Video Tracker Analysis Hanifa Yoanda; - Asrizal; - Yohandri; - Yulkifli
PILLAR OF PHYSICS Vol 16, No 1 (2023)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/12829171074

Abstract

Physics has an important role in development and technology. Physics is concerned with experiment. From the results of research that has been carried out, it is known that there is no linear motion of  kinematics experiment with speed control and the use of an inclined plane for the sliding plane of the linear motion experiment. The limitation of the instrument in displaying physical measurement quantities is one of the reasons. To overcome this limitation, a modeling tool assisted by a remote control toy car and analyze it using tracker software  is created. The purpose of this study is to determine the performance specifications of the modeling tool for linear motion experiments assisted by a remote control toy car, determine the value of the accuracy and precision of the modeling tool, and also determine the correlation of physical quantities in linear motion experiments. Based on the results of data analysis using tracker software, there are three results can be explained. First, the performance specifications of linear motion experimental modeling tool with the length of the glide plane being 2 m and a width of 30 cm. The use of a dc motor, bluetooth module using an android connected to the HC-05. Second, the accuracy of the measurement of time and speed in the LMCV experiment was 98.4% and 97.2%. The accuracy values for the measurement of acceleration and velocity in the LMCA experiment were 95.53% and 95.5%. Third, in LMCV the correlation between position and time is in the form of a linear line, the correlation between velocity and time is in the form of a straight line with a constant value
Carbon Monoxide Measuring System using MQ-7 Sensor with Cloud Storage Irfan Muhammad Zaqi; - Yohandri; - Yulkifli; Nofi Yendri Sudiar
PILLAR OF PHYSICS Vol 16, No 2 (2023)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/13451171074

Abstract

Carbon monoxide (CO) gas cannot be detected by sight or smell but is highly detectable and is formed from incomplete combustion such as in motor vehicles. Currently monitoring CO gas levels and measurement data at any time cannot be accessed all the time. Therefore, a measuring instrument system with data storage is required. We developed an instrument to measure CO gas levels in the air. The system developed uses the MQ-7 and ESP8266 sensors to produce a CO gas level measurement device with Cloud Storage. This research is a type of engineering research. The measurement technique used is a direct and indirect measurement. The direct measurement technique is done by comparing CO level data from standard tools with measuring instruments. Indirect measurement techniques are carried out by analyzing the data. Based on the research objectives, the specifications of the work tools are the average accuracy percentage of 97.27%, and the precision of 97.31%. Based on these result, the CO gas level measuring tool has a measurement accuracy and precision of close to 100%. So it is concluded that the CO level measuring tool can work properly
Co-Authors - Asrizal Hanifa Yoanda Irfan Muhammad Zaqi Nofi Yendri Sudiar Yohandri