1 Results for "《 예약문의 OIO↗8489↗8306》가라오케사이즈▣가라오케사이즈lap강남가라오케가라오케사이즈가라오케추천six 청담가라오케㏇㉥가라오케추천linked"

An educational project for my mechatronics students, a tube equipped with two LDR sensors to measure the speed of a ball inside the tube.