Maulana, Pandu, Ucuk Darusalam, and Novi Dian Nathasia. “Road Guides and Special Location Monitoring for Blind People Using Ultrasonic Sensors and Microcontroller-Based GPS Modules: Road Guides and Special Location Monitoring for Blind People Using Ultrasonic Sensors and Microcontroller-Based GPS Modules”. Jurnal Mantik 3, no. 4 (February 3, 2020): 444-450. Accessed June 20, 2026. https://www.ejournal.iocscience.org/index.php/mantik/article/view/590.