"IOT BASED SMART TROLLEY FOR AUTO-BILLING USING ARDUINO"Top of Form. JOURNAL OF BASIC SCIENCE AND ENGINEERING, [S. l.], v. 21, n. 1, p. 242–258, 2024. Disponível em: https://yigkx.org.cn/index.php/jbse/article/view/95.. Acesso em: 20 sep. 2024.