“…(Tumanggor et al, 2020;Dimas et al, 2018) The spring pendulum is, on the other hand, a very simple and accessible apparatus to study and resolve the harmonic motion and has been recently resolved in a variety of methods, namely smart phones and Arduino microprocessors (Kuhn & Vogt, 2012;Çoban and Çoban, 2020;Erol, Hocaoğlu and Kaya, 2020;Pili, 2018). However, based on the previous research, it is detected that students' understanding of harmonic motion is still low and there are some misconceptions and certain teaching-learning difficulties (Wardani, 2020;Somroob & Wattanakasiwich, 2017;Janah & Mindyarto, 2021;Nugraha, Cari, Suparmi & Sunarno, 2019).…”