Abstract: Portable vending machines are very useful devices for dispensing small, easily available necessary equipment for the use of man. The aim is to construct an automatic vending machine prototype model, which can be installed in schools, colleges, hospitals other public places to dispense pens, pencils, and sanitary napkins during needs with appropriate mechanical designs for item collection. Also, microcontroller circuitry for coin checking, and dispensing for items is to be proposed and implemented in real time
Since their introduction, vending machines have become an increasingly important distribution channel in the private sector. In Educational institutions and office stationery vending machine is of great importance. This System proposes is based vending machine that dispatches A4 sheets once the RFID card is read. The users can select the required item after the card is scanned and collect the item in the output unit. The system is divided into three parts, the first part deals with the scanning of RFID which provides cashless payment. The second one is the programming unit which is implemented using µC/OSII. The third part is the display unit which displays information and delivers the required item based on the information sent from the microcontroller. An embedded system vending machine is designed to achieve and portable machine that can sell items automatically.
Automatic vending machines are not that common in our country. Hence implementing such a machine in real-time will be of great use for people. The advantage of the machine is it requires no manpower, consumes less power, occupies less space maintenance free simple in operation portable. The objective is to develop a vending machine prototype model for vending the items by credit or transaction. The availability of the items is also checked. It finds its application mainly for students.

Keywords: Vending Machine, pieces of equipment.

| DOI: 10.17148/IARJSET.2022.9421