The proposed paper is the design of automatic vending machine. The main objective of our project is to launch a new technology application in society which is more efficient than previous launched technologies. A vending machine is an automatic device that dispenses consumer products to customers, after the customer inserts currency or credit into the machine. It’s a very easy and reliable method of purchasing than the conventional one. This is a microcontroller based vending machine that produces different types of chocolates from machine. This paper is attempted to solve the problems which is present in the coin based vending machine which contains the problems for changes difference between varieties of coins etc. In this technology we are including different techniques which contain microcontroller. Programming, coin insertion & detection, returning of coin, display of information and delivery of product. It is portable & can be move from one location to other location. The model of vending machine is implemented using Microcontroller 89S52.

Keywords : Microcotroller, DC motor, coin sensor, Relay, Vending machine.