individual assignment:
            write an application that interfaces a user with an input or output device that you made
         group assignment: 
            compare as many tool options as possible
      INDIVIDUAL ASSIGNMENT
      For this task, i used the microcontroller board i designed with both audio input and output.
      I will use create an interface that will show me samples or levels of inputs and outputs at the same time.
      
      To display our Interface we used Node-Red
      a. What is Node Red?
      Node-RED is an open-source visual programming tool used for wiring together hardware devices, APIs, and online services in new and interesting ways. It was originally developed by IBM's Emerging Technology Services team and is now a part of the JS Foundation. Node-RED is built on top of Node.js, a popular server-side JavaScript platform, and uses a browser-based flow editor to allow users to drag and drop nodes to create flows.
      b.How to install Node-Red on localhost
      Node-RED is an open-source programming tool that allows you to create flows for the Internet of Things (IoT) and is typically installed on a computer or server. However, you can also run Node-RED on an ESP32 microcontroller using the ESP-IDF framework. Here are the steps to install Node-RED on a localhost by using ESP32:
      Download Node.js on This Link and install

      Follow the steps and install
      

    I first thought it would be a straight forward journey but here are some challenges i met
    The laptop i am documenting on is a work-issued one, so i could not install since i am not the admin.
    Second, on my other laptop, my powershell execution policy was restricted. I had run the commands manytimes with an error.
    Until i run to the Poe AI and it guided me on how to remove the restrictions

    Here is what it looks like when you just got node js
    

    then you use the commands to install the program
    
    
    As you keep following the guide from nodered.org
    
    Chocolatey and other tools also had to be downloaded

    
    Then you get the node-red installed
    

    Now we have the new IP address to run in a browser

    

    Welcome to node-red
    

    Started by adding in (downloading) relevant palettes
    
    Serial added

    I built the flow that reads the analog value of a potential meter and the corresponing light intensity from the light Sensor
    

    the dashboard looks initially like this:
    

    Then i loaded in this arduino program:
    int newval = 0;
      void setup() {
        // Initialize Serial port
        Serial.begin(9600);
      }
      
      void loop() {
        newval = newval+4;
        if(newval == 500){
          newval=0;
          }
        int fixed =40;
        int sensorValue = analogRead(35);
         int sensorValue1 = analogRead(34);
        // Convert the analog reading (which goes from 0 - 1023) to a voltage (0 - 5V):
       // float voltage = sensorValue * (5.0 / 1023.0);
       Serial.print("{\"SENSOR1\":");
       Serial.print(sensorValue);
       Serial.print(",\"SESNOR2\":");
       Serial.print(fixed);
       Serial.print(",\"SESNOR3\":");
       Serial.print(sensorValue1);
       Serial.println("}");
       delay(2000);
      }

      then the com-port gives us these readings:
      

      then the dashboard becomes
      

      the video of the interface app working
      

      The interface and appication programming has been demonstrated.

      
this is how the connection was made
      
      
      The actual dashboard
      
      
The demonstrative video