BLOG# 1 - Beats Per Minute Nano

A Heart Rate Monitor using the Arduino Nano 33 IoT Board

INTRODUCTION

This is my Introductory blog post for this Design Challenge: Design for A Cause 2021

^Updated

version 1.4

For this design challenge, I've decided to port a project that I developed during a challenge in the Azure Sphere Group, to the Arduino Nano 33 IoT Board

• Beats Per Minute -- Home Is Where the Hack Is Challenge
  • In this blog, I demonstrated how I connected a Heart Rate Sensor to the Avnet MT3620 kit. The Beats Per Minute are calculated and displayed on an attached OLED Display. The RED LED will indicate the users heart beat..
  • I will replace the MT3620 kit with the Arduino Nano 33 IoT Board

Beats Per Minutes project photos and video
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The 5 Blogs

• • To comply with the Challenge requirement to create 5 blogs,  my plan is to use this blog post as a table of contents and will add the other blogs as links..
  • Blog Naming Format
  • • In order to keep track of the BLOGS, I use the following naming convention to title my blogs related to this challenge.
  • • Blog# <n> Beats Per Minute Nano - <topic>

• • Blog Version numbering
    • Blogs will be marked with a version number to indicate changes over time. The naming convention for version number will be (<major#>. <minor#>)
    • • for example 1.0 is the first edition of the blog and 1.1 is the 2nd and so on.
    • The major number will not change during this challenge and will be used for a later Design cycle, if ever.

My Idea

My plan, is to use the supplied challenge kit (Nano 33 IoT ) as a Beats Per Minute Heart Sensor Unit. I will be designing this heart Sensor unit for this challenge.

• For my Design, I'll be attaching a Heart Rate Sensor and a OLED Display to the supplied challenge kit (Nano 33 IoT )

• I never worked with an Arduino before so, I will be experimenting with the Nano 33 IoT and the components I'll be using for this challenge.
  • Connecting the Heart Sensor
  • Connecting the OLED Display

• Researching and experimenting with persisting telemetry data.
  • I'll experiment with the Arduino's IoT Cloud, in order to store Heart Rate Sensor Data
  • If time permits, I'd like to research attaching to MongoDB atlas, which is a NoSQL database engine that I used in the following challenge:

  • • Blog# 8.2 (Part 2 of 2) EAS - DATA REPOSITORY MongoDB

• I will be using a developer workstation that I configured with Ubuntu.
  • Here are my notes: My OLD/NEW Linux Developer workstation.
  • I have attached the Nano to it.
  • I plan to use Visual Studio Code with an exciting extension I just discovered, called PlatformIO

• In addition to Arduino's IoT Cloud, I'm intrigued to experiment and implement the following technologies into my design using the following project listed on Arduino page

• • Blynk: a simple project from our community connecting to Blynk to operate your board from a phone with little code

• • IFTTT: see an in-depth case of building a smart plug connected to IFTTT

• • AWS IoT Core: we made this example on how to connect to Amazon Web Services

• • If time permits:

• • • Azure: visit this github repository explaining how to connect a temperature sensor to Azure's Cloud

• • Firebase: If you want to connect to Google's Firebase, this Arduino library will show you how

Required Hardware (Bill of Materials)

Here are the components I used for the project. I also used: Breadboards and Jumper wires for experimenting and the challenge Heart Sensor circuit.

The Project Plan Blogs   

• Blog#2 Beats Per Minute Nano - Research & Experimentation

  • Since I have not used Arduino before I will need to research and experiment with the following:
  • The Challenge Kit Arduino Nano 33 IoT
  • • connecting the Nano to the IDE.
      • I plan to use VS Studio with the PlatformIO extension, which is claimed to function like the Arduino IDE
      • I will be experimenting with a few example sketches.
  • Connecting the Heart Sensor to the Nano
  • Connecting the OLED to the Nano
  • Using the Arduino IoT Cloud
  • Experimenting with selected projects from the Element14 community: Blynk, IFTTT, Azure
  • Using MongoDB Atlas if Possible.

• Blog#3 Beats Per Minute Nano - System Design

  • Block diagram
    • Wiring Diagram
      • Show the components (Nano & OLDED) wired to a breadboard.
  • Software Design
    • UML Sequence Diagram
      • Show the Logic of the flow of the Software
    • Libraries
      • All the libraries are used in Blog#2

• Blog#4 Beats Per Minute Nano - System Implementation and Testing

  • Electronics build
    • Use the wiring diagram described in the design blog#2
  • Software Programming
    • Use a GitHub repository to maintain the source code
    • Describe the routines used.
    • Conclusions and/or Problem encountered.

• • Testing
    • Electrical
      • Test the wiring.
      • Conclusions and Findings
  • • Software
      • Unit test the code dealing with the 2 components (Pulse sensor,& OLED)
      • Conclusions and Findings
  • • Run Application
      • Run the application and compare the BPM to another BPM app if possible.
      • Show a video
      • Conclusions
        • Any Problems?

• Blog#5 Beats Per Minute Nano -  Conclusions and Future Enhancements

• • Conclusions
    • Give some conclusions as to what you have gained from this Design Challenge
    • Did everything work as designed?
    • What were the biggest hurdles you had to overcome?
  • Future Enchantments
    • List some possible enhancements that can be added to make the system more useful.
    • The subjects that I did not have time to implement:

1. Using the Arduino IoT Cloud

• • • • • LINK to Project page

2. Experimenting with selected projects from the Element14 community: Blynk, IFTTT, Azure

• • • • • LINK to Project page

3. Using MongoDB Atlas if Possible?

• • • • • Connect to MongoDB Atlas with C

    • • • Write the data from the Heart Sensor Project to the Database.

    • Other Enhancement Ideas?