Joe Roop / Mbed 2 deprecated rtos_project

WashWatch, keep a pulse your laundry facility with a simple sonar based real-time alert system.

Dependencies:   C12832_lcd EthernetInterface WebSocketClient mbed-rtos mbed

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Table of Contents

  1. WashWatch
  2. Project Overview
  3. Additional Hardware and Software
  4. Code
  5. Testing
  6. Known Issues

WashWatch

A simple Ethernet enabled remote sensing project

Project Overview

This project utilizes the LPC1768 device with an analog sonar device to sense motion and provides that data to a server over a websocket. The device will connect over Ethernet via DHCP. The use case for the project was to allow several users to see whether a laundry facility was being occupied and if not when it was last occupied. The project provides an end-to-end system to allow users to view data from a remote LPC1768 device.

The project also makes use of several other tools for the server and client side part of the application. Node.js running on Linux was used for the web server with a MongoDB used for the database. HTML5 and websockets were used to provide the real-time updates to the clients. Clients can connect with most browsers that support websockets to receive the data.

/media/uploads/joeroop/washwatch.png

Additional Hardware and Software

  • Sonar device Ultrasonic Range Finder - XL-Maxsonar EZ4

Sonar Device

  • Node.js used for the web server
  • MongoDB used for the database to store sonar data
  • Smoothie.js library to plot the sonar data in the browser
  • jQuery library to create and modify HTML structure
  • Javascript to link everything together

The sonar device is connected to the LPC1768 application board as follows: /media/uploads/joeroop/mbed_sonar.png

Code

LPC1768 device code:

Javascript Server side code example:


 
Client side code example:


 
Testing


Known Issues


    


    


    


        

        
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