Wijayanti M. Design and Construction of Smart Garage Using Ultrasonic Sensor HC-SR04 and MQ-2 Gas Sensor Based on Arduino Uno. Info Sains [Internet]. 2022 Jan. 9 [cited 2025 Jan. 6];12(1):1-6. Available from: https://ejournal.seaninstitute.or.id/index.php/InfoSains/article/view/148