Abstract
Abstract: Now-a-days vending machines are becoming very popular in western countries because of their ease, less wastage of time and effort, availability near doorstep and variety of products. But in India, vending machines are still not so popular according to the customer's requirement. In this paper, a model of vending machine is proposed which dispenses liquid products by accepting the coin. The model of vending machine is customer friendly with a feature of fake coin detection. This machine is implemented using AVR ATmega16 microcontroller. Various modules of the machine are interfaced with the microcontroller. Coin recognition through CS-616 coin acceptor and IR sensor makes this model simple and inexpensive as compared to the previous work where either currency or tokens were used or difficult techniques like image recognition for detection of coin. Keywords: Atmega16,IR sensor, CS-616 Coin acceptor
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