An RFID Based Arduino Controlled Coffee/Tea Vending Machine

International Journal of Research and Scientific Innovation (IJRSI) | Volume V, Issue VI, June 2018 | ISSN 2321–2705

An RFID Based Arduino Controlled Coffee/Tea Vending Machine

Pralay Majumdar, Pritam Ghosh, Praloy Roy, Subham Mondal

 Birbhum Institute of Engineering & Technology, Suri, Birbhum
Maulana Abul Kalam Azad University of Technology, West Bengal, India

Abstract – Most of the people drink coffee/tea which is made by ordinary coffee maker machine. So use of coffee maker machine by interfacing hardware and software will be an initial step to enter the new automated technological world. In ordinary coffee maker machine any one can get coffee by manual hand to hand transaction, but in An RFID Based Arduino Controlled Machine, only a registered member can get coffee/tea automatically. In this process a person registers humself/herself in a database by depositing some amount of cash balance and he/she is being given a Radio Frequency Identification (RFID) card. When people wish to enjoy drink, they just have to scan their RFID tag/card to get it without the help of any human operator. The balance will be automatically deducted from their a/c.

Keywords: Main operational circuit, Registration circuit, Power circuit, Flowchart of operation, Testing and results.

I. INTRODUCTION

Here an arduino mega board is being used as a heart of the project. At first the RFID tag of a user is scanned by an RFID reader module connected to the arduino mega board. Then the arduino sends the unique RFID tag number ((HEX code) to the database to check its availability. After checking, the database sends tthe data regarding the tag UID to arduino and arduino displays it on the LCD connected to it.

Two buttons- ‘START’ and ‘RESET’ are placed on the machine to control the operations. After a successful scan of RFID, if the user presses the START button, then the coffee making operations will start. The Reset should be pressed after any invalid conditions like ‘Low Balance’ or ‘Unauthorized user’ to rest the machine.

Sensors are used to sense and maintain the water level and to sense dry coffee mixlevel.

A separate temperature controller module is used to maintain the temperature of the water at a desired value.

The main objective of this project is to step forward towards digitalization and automation. This machine is a replica to show how automatic transaction works and how it makes life easier.

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