SANJAYA, W. S. Mada; ANGGRAENI, Dyah; DENYA, Rena; PANDRIANTAMA, Handi; IKLIMAH, Iklimah; DEWI, Indry Pritanti. A Low Cost Of Simple Pendulum Experiment Apparatus Based On Ultrasonic Sensor And Arduino Microcontroller. Al-Khidmat : Jurnal Ilmiah Pengabdian Kepada masyarakat, [S. l.], v. 1, n. 2, p. 61–66, 2018. DOI: 10.15575/jak.v1i2.3336. Disponível em: https://journal.uinsgd.ac.id/index.php/al-khidmat/article/view/3336. Acesso em: 6 dec. 2025.