已关闭

DIGITAL CIRCUIT------VENDING MACHINE

****Designing and building the electronics of a

vending machine with 9 different inputs and 10 different LED outputs. Each input can be implemented with a switch or simple jumper wire and each output must be implemented with an LED. You will design a state machine for this system and

then implement that state machine in software using the MSP430. You must use two 74LS377’s in a shift register configuration to display the output. The requirements for the project are below:

1. Accept and differentiate between money denominations (you will use switches to

indicate what denomination was inserted). Signals must be properly de-bounced in

software to prevent multiple entries. – 4 inputs

2. At least 4 selections should be available with the following price points: $0.50, $0.80,

$1.10, $1.50 – 4 inputs

3. At any time (provided there is money credited to the user) a return change button

should be able to reset the money counter while triggering an led to indicate change has been returned – 1 input and 1 output

4. Track how much money has been credited to the user using an 8 bit LED array (8 bits

can display between 0 and 255, for this project we will assume that the total money

credited is the decimal number divided by 100 ex: 135=$1.35) – 8 outputs

5. An indicator that not enough money is credited for a pushed selection – 1 output

6. System must keep track of inventory in the machine. It can be assumed that in the

initial state, the machine is full and there are five items for each of the four selector

buttons.

7. Show that an item is out of stock – 1 output

8. You may only use two pins as outputs from the MSP430 (Hint: think shift register)

9. You will make two versions of the final software. One will perform simple polling of the input signals. The second will use interrupts to monitor the input signals.

10. Input signals must be pull high or low with internal resistors of the MSP430

****DON'T HAVE TO WRITE CODE.

****JUST DEVELOP A STATE TABLE AND STATE DIAGRAM AND DRAW THE CIRCUIT TO BUILD ON BREADBOARD.

技能: 电路设计, 数字设计, 电機工程

查看更多: circuit digital led alarm clock, vending circuit, coffee vending machine circuit, circuit digital esr meter schematic, coffee vending machine control circuit, vending machine circuit, circuit digital clock alarm, electronic circuit vending machine, electronic circuit digital clock alarm, design alarm circuit digital clock, circuit vending machine, electronic circuit digital clock, virtual machine linux run digital signage, digital electronic projects vending machine, develope inventory control management system using vbnet, circuit digital clock alarm design, inventory sales report system using visual basic60, inventory control management system, point sales inventory trial version system, track operating system php

About the Employer:
( 2 reviews ) garland, United States

项目ID: #12217731

7名威客为此工作的平均竞标价是$45

$200 USD 在4天内
(119条评论)
7.0
josepulido960

Developer of electronic products, experience in development of temperature control equipment, motor control, static power meters. Certified by microchip.

$35 USD 在7天内
(1条评论)
1.1
shadielsayed

hello, I am an electrical engineer , I studied electronics too, I used to do a lot of digital circuits, u can see some samples on my profile

$20 USD 在2天内
(1条评论)
0.8
rohitcochin

Hi, Basically I'm an electronics engineer. I'm expert in embedded system design. I am sure I can help you. Please come to chat for more discussion. Thank you

$15USD 在1天里
(0条评论)
0.0
DesignEnlight

Dear Employer, I would like to apply as a Designer in your job post. It says that you are looking for Graphic Designer and also who is a detail-oriented person. I think that I am the right person for the job. I 更多

$15 USD 在0天内
(0条评论)
0.0
Cumair

Hi, this is Engr Umair. I am highly skilled electrical engineer with more than 3 years of experience in the field of electronics. Also i am a Professional Graphic designer. I've been working on Industrial Automa 更多

$15USD 在1天里
(0条评论)
0.0
xarpa

I do Business, Technical, Academic, Commercial, Fiction, IT , ITES apps and Blog writing. I work in PHP, JAVA, ASP, DOT NET, Prestashop, Magento, woo commerce, OSCommerce, WordPress, Joomla, Web Hosting Panels Progr 更多

$100 USD 在3天内
(0条评论)
0.0
zarkoostojic91

A proposal has not yet been provided

$15 USD 在5天内
(0条评论)
0.0