Aisa Fitriani Dwi Maharani, Supari, Satria Pinandita. Analysis of speed using optocoupler sensors on electric boats in Sayung Demak. tekno [Internet]. 2024Jul.31 [cited 2024May12];11(2):229-37. Available from: https://jurnal.sttmcileungsi.ac.id/index.php/tekno/article/view/1028