{"componentChunkName":"component---src-templates-blog-post-js","path":"/lab-2/","webpackCompilationHash":"f2e780667fa7b13e6baf","result":{"data":{"github_icon":{"childImageSharp":{"fixed":{"base64":"data:image/png;base64,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","width":50,"height":50,"src":"/static/b71bc541b323dcd8f0a887920f9670f9/352e5/github-icon.png","srcSet":"/static/b71bc541b323dcd8f0a887920f9670f9/352e5/github-icon.png 1x,\n/static/b71bc541b323dcd8f0a887920f9670f9/aae31/github-icon.png 1.5x,\n/static/b71bc541b323dcd8f0a887920f9670f9/47c2b/github-icon.png 2x"}}},"site":{"siteMetadata":{"title":"Da Post","author":"Matthew Robertson"}},"markdownRemark":{"id":"3ffd14ec-3690-5a72-aad6-1ce14823d9a3","excerpt":"Objective The purposes of this lab are to: Reinforce enumerating requirements from use cases and user stories Become familiar with the Arduino platform and its…","html":"

Objective

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The purposes of this lab are to:

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Materials

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The materials used for this lab were

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References

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  1. Arduino IDE Examples
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  2. ESP8266WebServer Docs
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  3. Forum on how to use PROGMEM to store HTML
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  4. Arduino IDE
    5. \n
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Procedures

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  1. Install the Arduino IDE from here
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  2. \n

    Set up your environment to work with the ESP8266 Wemos D1 Mini

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    3. \n
  3. Implement WiFi on the Arduino using the example WiFi setup by going to File -> Examples -> ESP8266WiFi -> WiFiClientBasic
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  4. After you have tested that you are able to connect to network, you are ready to start setting up your web server.
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  5. Using the docs found for the ESP8266WebServer Library, create a web server that will turn on and off the lights and set them to a cycle mode. For the cycle mode, I would suggest using the millis() library so that you don’t lock up your server by using delay()‘s.
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  6. Once you have all of your code written and you’re ready to test it, connect your Arduino to the computer and flash it by going to Sketch -> Upload.
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  7. Once it has been flashed, keep it connected and open up the serial monitor (Tools -> Serial Monitor) so that you can monitor the server’s output.
    8. \n
  8. You have now implemented a stoplight using an Arduino! What else can you do using the same simple libraries??
    9. \n
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Thought Questions

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  1. \n

    What are some key differences between developing this lab on a Raspberry Pi, and developing on Arduino?

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    Developing on a Pi has a lot of overhead. There are a lot of different steps needed to even get the Pi up and running and able to host a web server. A Pi has multiple uses other than running a program for you since it has an entire OS on it. An Arduino on the other hand has a single purpose: be given compiled code and run it whenever I have power. Because of the simplistic nature, I had to be more creative to do things that are pretty easily implemented on a Pi (such as timeouts).

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    2. \n
  2. \n

    What are the strengths and trade-offs of each of these platforms?

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    I think that a Pi can do more complicated things quicker. As well, a Pi is a bit easier to work with. An arduino on the other hand is much more straight forward. There are two functions that need to be implemented and then you have a working product. As well, there is no overhead with starting/stopping a server which I think is incredible. It either has power or it doesn’t and if it does have power, it runs.

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    3. \n
  3. \n

    How familiar were you with the Arduino platform prior to this lab?

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    I had never used the Arduino platform prior to this lab. However, I will definitely be using it going forward it is an incredibly easy platform to work with and very powerful.

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    4. \n
  4. \n

    What was the biggest challenge you overcame in this lab?

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    The biggest challenge I had to overcome was getting my Arduino on WiFi. For one reason or another, my Arduino really struggled to get connected. It wasn’t until I erased all settings on the Arduino when I flashed the code (instead of just the sketch) that it actually worked for me.

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    5. \n
  5. \n

    Please estimate the total time you spent on this lab and report.

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    I spent about 1.5 hours on this project as a whole. Most of that time was familiarizing myself with the Arduino architecture.

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    6. \n
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Certification of Work

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I certify that the solution presented in this lab represents my own work. In the case where I have borrowed code or ideas from another person, I have provided a link to the author’s work in the references, and included a citation in the comments of my code.

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— Matthew Robertson

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Appendix

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Appendix 1: System Interface - Web Page

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State: Startup, /lights-out\n\n \n \n \n \n

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State: RED on, during cycle or manual\n\n \n \n \n \n

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State: YELLOW on, during cycle or manual\n\n \n \n \n \n

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Appendix 2: Server Output (via Serial)

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Appendix 3: Code

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Available on GitHub

","frontmatter":{"title":"Lab 2 - Arduino Stop Light 🚦","date":"October 01, 2019","description":"Lab 2 for IT441. In this lab, a stoplight is implemented using a ESP8266 micro-controller (Arduino) and a breadboard.","github_link":"https://github.com/mattrobertson14/it441-arduino-stop-light"}}},"pageContext":{"isCreatedByStatefulCreatePages":false,"slug":"/lab-2/","previous":{"fields":{"slug":"/lab-1/"},"frontmatter":{"title":"Lab 1 - Raspberry Pi Stop Light 🚦"}},"next":{"fields":{"slug":"/lab-3/"},"frontmatter":{"title":"Lab 3 - Arduino Stop Light w/ Distance Detector 🚦"}}}}}