VENDING MACHINEPLC PROGRAMMING PROJECT

MEMBER : RAHUL MELKAMU

INTRODUCTION● Vending machine is a machine that dispenses merchandise after customer deposits money. It

provides various snacks, beverages, cigarette and other products to consumers.

● The idea is to vend products without a cashier. Items sold via vending machine.

● The first vending machine is believed to have been invented by Hero of Alexandria, a first-century inventor.

● Most vending machines are designed as large safes.

● Most of vending machines are see-through or glass-front merchandisers. This is because it can show clearly and customer able to browse.

● Usually vending machines use a spiral kind of mechanism to separate and to hold the products.

● When the machine vends, the spiral turns, thus pushing the product forward and falling down to be vended.

This project will design and implement a coin operated vending machine controller

The Project Involved:● Design of vending machine

● PLC programming

● Concept of digital logic

Vending Machine Features

➢ Vend 5 products

➢ Accept 3 kinds of coins(50c , $1 , $2)

➢ One coin can be entered at one time

➢ Self-starting with the initial coin

➢ First insert coins, then choose one product at a time!! (cannot vend more than one product at a time)

Design SpecificationsInputs

Accept 3 kinds of coins(50c , $1 , $2)

OutputSelected drink

Buttons1 button for turn on/off programme (main switch)

3 buttons for coin input

5 buttons for select product

1 button for reset program or cancel process

Equipment used5 motors

2 LED

2 resistor 330ohm

START

END

WAIT FOR COIN

SPRITEL&PFANTACOKE ZERO

COKE

IFTOTAL = $2

SELECT DRINK

RESET/CANCEL

● DISPENSE DRINK

FLOW CHART

Summary

➢ This project proposal telling that the component that might be used.

➢ Our target is to gain knowledge about the basics of how a vending machine works using Programmable Logic Controller.

➢ The flowchart show the flow of process that happen when the user try to buy the product.

➢ vending machine respond to the user’s decision on deciding which product he/she want.

➢ As they press the switch, the can will drop to the outlet corner to let the user get it.

THANK YOU