Published August 31, 2022

Summer Bridge AIB

I am a CNM student who has participated in the STEM Core summer program. This is my project while in the course.

BeginnerShowcase (no instructions)38

Things used in this project

Hardware components

Particle Argon

Seeed Studio Base Shield V2

Seeed Studio Grove - Light Sensor

Seeed Studio Grove - 6-Axis Accelerometer&Gyroscope

Seeed Studio Grove - CO2 & Temperature & Humidity Sensor (SCD30)

Adafruit NeoPixel Ring: WS2812 5050 RGB LED

Software apps and online services

Microsoft VS Code

Story

As a complete beginner, I was a bit intimated by the scope and aim of this course work, especially when it comes to electronics. But Professor Brian has pulled the abstract towards us in a concretizing manner. His explanations and hands-on method for both coding and building electronic components has enhanced much of my introduction to IoT.

Now to the actual electronic board (I still do not know what to call it): we were tasked with a project where we would be writing code that would flash a little LED light, and later, a LED ring. Both lights were external components that were connected to the board.

After writing codes to flash the LED lights, we added code that would have the board read both temperature and humidity in the room. The test code written for the temperature used a random number generator between 65 and 85 as data for temperature; this was utilized as a controlled experiment to understand how the data would appear on the Cloud in Adafruit.io. Next, we installed code on the electronic board that enabled the data recorded (humidity and temperature F) to be sent to the Cloud and transposed into a graph (for temp F) and a gauge (for humidity).

Next, we used an accelerometer/gyroscope (A/G). We coded a trigonometric equation to give us the degrees of altitude of the A/G with respect to its position, We then attached the coded A/G to a little plastic cut-out of an airplane. When we augmented the direction and angle of the physical airplane, we were able to received a number that represented the angle in degrees that the airplane was altered with respect to the level ground; parallel to ground was represented by a zero.

Lastly, we used a neat little component that measured the light in the room, a Grove Light Sensor (GLS). We transposed this data into a graph that showed the amount of light entering the little component, and this was seen in the cloud. Covering the GLS gave us a depression point on the graph, an indication that the device was working.

I enjoyed this experience very much. Thank you to all the people and organizations that made this possible. I will be pursuing more education in IoT as a result of taking this short introduction. Special thanks to Professor Brian for his help.

Code

/*
 * Project Motion
 * Description: Learn to use accelerometer
 * Author: 
 * Date:
 */

#include <ADXL345.h>

int x, y, z; 
float ax, ay, az, pitch, roll; 


ADXL345 adxl; 

SYSTEM_MODE(SEMI_AUTOMATIC);
SYSTEM_THREAD(ENABLED);

void setup() {
    Serial.begin(9600);
    adxl.powerOn();
}

void loop() {
    //read the accelerometer values and store them in variables  x,y,z    
    adxl.readXYZ(&x, &y, &z); //tell it to put data into x,y,z from reality
    Serial.printf("values of X = %i, Y = %i, Z = %i\n",x,y,z); //print along the usb cable

    // Get acceleration in g's
    double xyz[3]; //array xyz; acceleration of xyz into those variables
    adxl.getAcceleration(xyz);
    ax = xyz[0];
    ay = xyz[1];
    az = xyz[2];
    pitch = asin(ax)*(180/(M_PI));
    roll = atan2(ay,az)*(360/(2*M_PI)); 
    Serial.printf("values of X = %0.2f, Y = %0.2f, Z = %0.2f, pitch = %0.2f, roll = %0.2f\n",ax,ay,az,pitch,roll);
    delay(500);

}

/*
 * Project neo
 * Description:
 * Author:
 * Date:
 */

#include "neopixel.h"
#include "colors.h"
#include "math.h"

#define PIXEL_PIN A2
#define PIXEL_COUNT 16
#define PIXEL_TYPE WS2812B

Adafruit_NeoPixel pixel(PIXEL_COUNT, PIXEL_PIN, PIXEL_TYPE);

int i, pixelNum, color; 
bool buttonState; //gives a variable that can be on or off 
float bright, t, freq; //brightness, time, frequency (occilation)

SYSTEM_MODE(SEMI_AUTOMATIC);
SYSTEM_THREAD(ENABLED);

// setup() runs once, when the device is first turned on.
void setup() {
  // Put initialization like pinMode and begin functions here.
  pinMode(D10,INPUT); //we've got a button attached
  freq = 1/3.0; //interger divided by interger is integer (would actually equal zero)
  pixel.begin();
  pixel.setPixelColor(5,red);
  pixel.show();
  i = 0; 
}

// loop() runs over and over again, as quickly as it can execute.
void loop() {
  // The core of your code will likely live here.
  
  buttonState = digitalRead(D10); //whatever the button actually is, T(Pressed) or F(not Pressed)
  while(buttonState == true) {
    t = millis() / 1000.0;
    bright = 127.5 * sin(2 * M_PI * freq *t) + 127.5; //Trig equation 
    pixel.setBrightness(bright); 
    i++;
    pixelNum = i % 14;
    color = i % 6;
    pixel.setPixelColor(pixelNum,rainbow[color]);
    pixel.show();
    delay(25); 
    buttonState = digitalRead(D10);
}
}

Credits

Andre Bunker

1 project • 2 followers

Summer Bridge AIB

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Circuit Breadboard

Circuit Schematic

Code

Motion

Neopixel

Credits

Andre Bunker

Comments

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Summer Bridge AIB

Summer Bridge AIB

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Circuit Breadboard

Circuit Schematic

Code

Motion

Neopixel

Credits

Andre Bunker

Comments

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