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All Journal Indonesian Journal of Science and Mathematics Education JURNAL PENDIDIKAN TAMBUSAI Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Journal of Experimental and Applied Physics
Mairizwan, Mairizwan
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Control & Systems Engineering Education Electrical & Electronics Engineering Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Journal : Journal of Experimental and Applied Physics

 1 
Comparison of Power Absorption Effectiveness of Dynamic Solar Panels and Static Solar Panels at an Angle of 15° Fauzi, Wulan Aulia; Mairizwan, Mairizwan; Yulkifli, Yulkifli
Journal of Experimental and Applied Physics Vol 2 No 2 (2024): June Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i2.56

Abstract

This study aims to determine the performance specifications and design of the measurement system so that it can measure the effectiveness of the two panel systems. The performance specifications of this system use 2 20Wp solar panels for both systems, namely static solar panels and dynamic systems, namely dual-axis solar trackers. Voltage and current measurements use INA219 sensors and are displayed and stored using a serial Bluetooth terminal as a data logger. Design specifications for The results of this linearity test show very satisfactory results in terms of measurements on voltage and current parameters, namely the R-Square value, which reaches 1 and 0.99. The accuracy of the INA219 sensor is 97.78% for voltage and 96.21% for current. The precision of the INA219 sensor for voltage is 100% and 91% for current. Based on these data, it can be said that this tool works well. The measurement results of the increase in solar panel power absorption are compared between the static solar panel system at an angle of 15 ° to the north and the dynamic solar panel system with the dua- axis solar tracker method. The power generated by the static solar panel system is 3229.81 watts, and the power generated by the dual-axis solar tracker system is 3865.92 watts, with a percentage increase in power of 19.7%. It can be concluded that the dual-axis solar tracker system is more efficient in generating power compared to static systems.
Design of a modeling tool for wheel connected with a belt using speed and time control for video tracker analysis Sari, Reza Novita; Asrizal, Asrizal; Amir, Harman; Mairizwan, Mairizwan
Journal of Experimental and Applied Physics Vol 2 No 3 (2024): September Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i3.63

Abstract

The influence of the advances of science produces technological innovations that leverage on education, economics, social and self-development. In education, design of laboratory experimental modeling tools continues to be carried out by researchers to improve learning effectiveness. Wheel movement experiments related to belts include one of physic learning activities. The parameter measured from the creation of modeling tool is the wheel speed and analysis of wheel motion related to the belt. The system can be controlled in speed and time using Blynk application. Video recordings are used as circular motion analysis material on Tracker applications. The design of system is a box size 35 cm in length, 20 cm in width and 18 in height consisting of one switch, LCD, and two wheels connected by a belt. Wheel 1 has a diameter of 15 cm and wheel 2 is 10 cm. Based on data analysis, the results of physical parameters were obtained with high accuracy and precision values using standard measuring instruments, namely tachometers, calculation of the theoretical formula. The system's precision was 98.84% and speed accuracy for 30 rpm, 50 rpm and 80 rpm were 99.3%, 99.19% and 99.93%. Frequency values increased according to the increase in input speed and compared to the reverse period.  The angle speed will increase as the wheel spokes become smaller. So, the wheel modeling tool related to the belt using speed and time control with the Blynk application as well as the Tracker video alysis can work effectively and validly.
Design and Build an Automatic Feeding System for Catfish Farming based-on Internet of Things (IoT) Fajri, Mukhlis Surito; Asrizal, Asrizal; Amir, Harman; Mairizwan, Mairizwan
Journal of Experimental and Applied Physics Vol 2 No 4 (2024): December Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i4.64

Abstract

Fish farming represents a sector aimed at boosting the national economy. The Ministry of Marine Affairs and Fisheries has prioritized programs to support the growth of catfish farming.. However, there are still obstacles experienced by cultivators such as irregularities in feeding time and uneven distribution of feed. Therefore, a solution is needed in the form of designing an efficient system in providing fish feed. The system is developed using ESP32 microcontroller, servo motor, stepper motor, loadcell, and connected to the website for remote control. The system utilizes a motor, load cell, and is integrated with a website for remote operation. This research employs an engineering approach, focusing on system design and testing. The findings indicate that the system achieves an average feed weight measurement accuracy of 98.31%, demonstrating reliable performance in both laboratory and field-scale tests. This system is expected to increase efficiency, practicality, and effectiveness in catfish farming, as well as providing real-time information about feed and feeding schedules.
Using Sensors with the Internet of Thing for Earthquake Detection System : A Systematic Literature Review Putri, Shinta Maharani; Asrizal, Asrizal; Amir, Harman; Mairizwan, Mairizwan; Fitri, Mutiara Nurul
Journal of Experimental and Applied Physics Vol 2 No 4 (2024): December Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i4.73

Abstract

Every human being needs safety in their lives from all disasters. However, earthquakes are the most impactful geological natural phenomena that can threaten human safety. One solution is to utilize an earthquake detection system to anticipate such disasters by utilizing sensor technology and the Internet of Thing (IoT). The purpose of this research is to evaluate the effectiveness of various earthquake detection technologies, including vibration sensors such as SW-420, MAG3110, DHT11, ADXL335 Accelerometer, HC-SRO4, and 801S vibration sensor, as well as IoT integration in early warning systems. The method used is Systematic Literature Review (SLR) with PRISMA design, including the steps of identification, screening, eligibility, and analysis of articles taken from the Google Scholar database for publications in 2018-2024. The results showed that the application of technologies such as Fuzzy Logic and vibration sensors, as well as IoT integration, significantly improved the effectiveness of earthquake detection and warning.
Compact Spectrophotometer Using TEMT600 Sensor for Protein Concentration Measurement Matondang, Anggun Sisri Br.; Yulkifli, Yulkifli; Mairizwan, Mairizwan; Sari, Mona Berlian
Journal of Experimental and Applied Physics Vol 2 No 4 (2024): December Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i4.74

Abstract

A simple spectrophotometer utilizing a white LED light source (520 nm wavelength) and a TEMT600 light sensor has been successfully developed to measure the concentration and absorbance of protein solutions. This device demonstrated an impressive average measurement accuracy of 96.26% for concentration and 95.97% for absorbance, making it highly effective for protein analysis. Despite its reliability, certain deviations were observed in the measurement results, primarily attributed to unpredictable environmental fluctuations and suboptimal sample preparation. These factors contributed to an average deviation of 3.74% for concentration and 4.25% for absorbance. While these deviations are relatively minimal and within an acceptable range, they highlight areas for potential improvement in future designs. Nevertheless, the tool is considered suitable for accurately measuring protein solution concentration and absorbance, proving its capability for laboratory or educational purposes. Its simplicity and cost-effectiveness make it a valuable device for routine protein analysis
Simulation of Silicon-Rubber and Boric Acid Composite Type Neutron Shields Thermal Absorpstion Efficiency Using NGCal Software Junita, Novia; Sari, Mona Berlian; Yulkifli, Yulkifli; Mairizwan, Mairizwan
Journal of Experimental and Applied Physics Vol 2 No 4 (2024): December Edition
Publisher : Department of Physics, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jeap.v2i4.75

Abstract

Perisai neutron termal merupakan suatu struktur atau material yang memegang peranan penting dalam proteksi radiasi neutron termal untuk menghindari dampak negatif dari paparan radiasi secara langsung, baik terhadap lingkungan maupun kesehatan manusia. Pada penelitian ini, digunakan silikon-karet sebagai material utama perisai neutron, sedangkan asam borat berfungsi sebagai penyerap neutron termal, sehingga keakuratan informasi mengenai sifat redaman dan proteksi perisai neutron yang dirancang menjadi sangat penting. Beberapa parameter perisai radiasi yang harus dievaluasi dalam menentukan kinerja material perisai neutron yang difabrikasi antara lain faktor redaman massa, faktor redaman linier, dan lapisan nilai setengah. Perangkat lunak komputasi NGCal digunakan untuk mensimulasikan sifat dan parameter material perisai. Berdasarkan perhitungan yang dilakukan, dapat disimpulkan bahwa perisai dengan efisiensi tinggi adalah perisai dengan penggunaan rasio sorben yang lebih tinggi yaitu asam borat, sedangkan apabila rasio karet silikon lebih besar dari asam borat maka tingkat efisiensi penyerapan menurun, tetapi fleksibilitas mekanis perisai akan semakin baik. Ketebalan perisai neutron berhubungan langsung dengan nilai MAC dan LAC, dimana semakin tebal perisai maka nilai MAC dan LAC akan semakin tinggi, hal ini menyebabkan efisiensi penyerapan neutron termal oleh perisai neutron akan semakin meningkat apabila asam borat mendominasi pada komposit, namun apabila ketebalan perisai didominasi oleh karet silikon maka efisiensinya akan semakin menurun.
Co-Authors Asrizal Az-Zahra, Khalishah Raudhatul Fajri, Mukhlis Surito Fauzi, Wulan Aulia Fitri, Mutiara Nurul Harman Amir Hidayati Hidayati Junita, Novia Matondang, Anggun Sisri Br. Nofi Yendri Sudiar Putri, Shinta Maharani Rambe, Indah Anggraini Renol Afrizon Sari, Mona Berlian Sari, Reza Novita Wahyuni Satria Dewi Yohandri Bow Yulkifli Yulkifli Zulhendri Kamus