• Shubham Subhash Chavan
• KAUSTUBH DHOLE
• SAURABH CHAVAN
• BHAGESH DONGARE
• VIKRAM GHADGE

Line follower trolley with a simple concept with simple circuitry. Basically, there are two types of line follower trolleys: one is black line follower which follows black line and second is white line follower which follows white line. Here we have designed the first one. Line follower actually senses the line and run over it. The trolley uses arrays of optical sensors to identify the line, thus assisting the trolley to stay on the track. The array of four sensor makes its movement precise and flexible. The trolley is driven by DC gear motors to control the movement of the wheels. The Arduino Uno interface is used to perform and implement algorithms to control the speed of the motors, steering the trolley to travel along the line smoothly. This project aims to implement the algorithm and control the movement of the trolley by proper tuning of the control parameters and thus achieve better performance. In addition, the LCD interface is added in order to display the distance travelled by the trolley. It can be used industrial automated equipment carriers, small household applications, tour guides in museums and other similar applications, etc. The Following Trolley Carrier is a small, wheeled trolley and ALT, which will follow the user, and will have a surface on which to conveniently place heavy objects. A working, full-­scale version of the product was expected to be constructed for the purposes of this project, but budget and time constraints led to a small prototype being made instead. This will be used to demonstrate the functions of the proposed product, the feasibility of the project and to gain insight into its technical aspects. This device is an automatic hand wash dispenser which dispenses a specific amount of handwashing liquid on to your hands when placed under a distance measuring sensor(ultrasonic sensor).

Line Following Trolley Using IR Sensor With Automatic Hand Santizer

"Line Following Trolley", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 6, page no.f651-f656, June-2021, Available :http://www.jetir.org/papers/JETIR2106790.pdf

"Line Following Trolley", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 6, page no. ppf651-f656, June-2021, Available at : http://www.jetir.org/papers/JETIR2106790.pdf