This paper reports the Implementation of a Radio Frequency Identification (RFID)-based multiproduct vending machine. It is designed to automatically dispense drinks such as coke, malt and yoghurt using RFID prepaid method system. After a careful analysis of the existing system, noting its shortcomings, a new system was designed and developed such that the shortcomings of the old system were carefully overcome. The system was designed using Microcontroller (Ardiuno Mega board), RFID tag/card reader, servo, Liquid Crystal Display (LCD) and other electronic devices. Prototyping methodology was adopted and the machine parts (hardware and software) were designed in modules. These modules were then separately tested and found to be functioning as desired. They were then integrated to form the finished product. A C-language based software that is able to drive a multiproduct vending machine was designed and implemented in this work and it made the hardware components to function in a well-co-ordinated manner. The customer can buy product using RFID card by swiping the card across the RFID card reader, then the embedded system reduces the amount from the card, shows balance on the LCD display and the product which is stacked in the machine plunges out of each funnel inside the machine (this is controlled by a servo attached to the microcontroller) and accessed via the dispensing unit outlet. The vending machine developed in this thesis uses a PC as a guide to connect to the machine especially for generating recharge codes. The RFID based multiproduct vending machine was compared with the cash-based alternative and found to outperform it in terms of flexibility, efficiency and security and has a better way of managing the financial return to the business due to the prepaid method of recharging the RFID card

Keywords : LCD, Microcontroller, multiproduct vending machine, etc.