E Ashwinin, M Keerthi, R Abhiram, B Nikhitha, Mrs. K Swayam Prabha 03 05 Humanmachine interaction systems are growing more and more important in smart places like offices schools banks and hospitals This project shows an AIbased automatic greeting machine made with Arduino that greets visitors automatically based on the time of day and whether or not a person is there An ultrasonic sensor is used by the system to find out when someone is getting close to it A standard RT Clock RTC standard module is used to get the right time right now The Arduino uses the time data to choose the best greeting message like Good Morning Good Afternoon or Good Evening An LCD screen shows the chosen greeting and the DF Mini Player component connected to a the speaker plays it at the same time This automated greeting protocol cuts down on the need for the human receptionists and makes sure that everyone is polite and consistent The suggested system is affordable dependable and works well in smart environments in real time Copyright (c) Journal of Science Engineering Technology and Management Science. All rights reserved 2026