Participation of the college in the first Libyan Conference on Technology and Innovation 2024 with a research paper titled: Design of Control System for Concrete Machine based on PLC and HMI Prepared by: Abdulazim Meftah - Qaminis College of Science and Technology Salwa Almishiti - College of Electrical and Electronic Technology - Benghazi Abdullah Majid - College of Electrical and Electronic Technology - Benghazi Ahmed Ghafir - College of Electrical and Electronic Technology - Benghazi The paper aims to design and implement an automated concrete mixer, capable of producing different concrete mixes according to user-defined settings. The project uses a Programmable Logic Controller (PLC) and a Human-Machine Interface (HMI) along with electrical sensors, valves, and control switches. The paper also uses software and systems that allow the user to program and modify the project’s devices and control them. The use of this equipment and tools ensures that the user can operate the machine fully automatically without the need for human labor and also ensures a high degree of precision in production.