Tang, Maoyin, Zhenglong Zhu, Lili Guo, Yongxin Zhou, and Xinyue Zhao. “Design of Plant Protection Car Based on PLC and Stepper Motor”. Journal of Research in Multidisciplinary Methods and Applications 3, no. 6 (June 15, 2024): 01240306004. Accessed November 28, 2024. http://www.satursonpublishing.com/jrmma/article/view/a01240306004.