Mulyadi E, Asrizal A, Amir H, Sari MB. Design and Construction of a Mathematical Pendulum Harmonic Motion Experiment System Using Arduino Based E18-D80Nk Proximity Sensor . Department of Physics, Universitas Negeri Padang [Internet]. 2024 Oct. 31 [cited 2025 Apr. 3];2(3). Available from: https://jeap.ppj.unp.ac.id/index.php/jeap/article/view/68