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

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Three Axis Vibration Measuring Instrument using a Smartphone Display-based Accelerometer Sensor Theja Lufiandi R; - Yulkifli; Mona Berlian Sari; - Asrizal; - Syafriani
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: 10.24036/13813171074

Abstract

Applications for vibration measurement include machine analysis, measuring vehicle stress, and monitoring building structures. Modern vibration measurement instruments are typically expensive, intricate, and not necessarily readily available to everyone. This research creates and develops a vibration measuring tool that makes use of an accelerometer sensor and a smartphone as a display because of this. Vibration data from the sensor can be transmitted via the Internet of Things, passed through a microcontroller, and then received on a smartphone. This measurement device has the benefits of being simple to use, widely available, and inexpensive. The Four-D (4-D) model is utilized in the Research and Development (R&D) technique. Define, design, develop, and desiminate make up the 4-D approach. A tool that can detect in three dimensions from the x, y, and z axes is the outcome of this research. This tool's design incorporates a smartphone as the display, an ADXL345 accelerometer as a sensor, and a NodeMCU ESP32 microcontroller as a microcontroller. The average accuracy and precision of this tool are 100% and 92%, respectively. It is anticipated that the creation of this measuring tool would expand the accessibility of more effective vibration measurement tools that can be applied in a variety of contexts.
IoT-based Wind Speed Measurement System Alif Yulanda Putri; - Yulkifli; - Syafriani; Yenni Darvina
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: 10.24036/14314171074

Abstract

Weather is the state of the atmosphere at any time which is expressed by the high and low values of the weather element parameters. Observations of weather elements are carried out so that they can be used as needed in the future. This study aims to determine the performance and design specifications of a wind speed measurement system based on the internet of things with a smartphone display. This measuring instrument is built using a wind speed sensor, namely a wind speed sensor as a speed sensor, Arduino Uno to connect sensor readings to NodeMCU, the NodeMCU ESP8266 microcontroller which is used to access the internet network so that it can be sent to the thingspeak server and data from thingspeak is displayed on an android smartphone using inventory application. The results of measuring, testing, and analyzing wind speed using the Internet of Things and a smartphone display, namely Arduino Uno, process the wind speed detected by the wind speed sensor before sending it to NodeMCU ESP8266. After that, the data is sent to the thingspeak server which will be displayed on the Android phone. Second, the average accuracy of wind speed measurements on the first, second, and third days were 95.96%, 94.83%, 96.16%, and the average accuracy of wind speed measurements on the first, second, and third days were 92.85%, 94.43% and 96%. 
Co-Authors - Asrizal Alif Yulanda Putri Mona Berlian Sari Syafriani Syafriani Theja Lufiandi R Yenni Darvina