Arduino Basic Project 4

Welcome to the Technical Praveen, In this article, we will figure out how to make a few rudiments venture with arduino at home. in the event that you wanna figure out how to make it deliberately read the full article. this is the most fascinating and famous venture these days in hardware and designing, a considerable lot of the understudies from school a lot making this marvelous task. instructions to make circuit graph and how to compose the code. 

Beginning 

Before you can begin working with Arduino, you need to ensure you have the IDE programming introduced on your PC. This program permits you to compose, see and transfer the code to your Arduino Uno board. You can download the IDE for nothing through my site. 

When the IDE is introduced, you should interface your Arduino to your PC. To do this, plug one finish of the USB link to the Arduino Uno and afterward the opposite finish of the USB to your PC's USB port.

Select The Board

When the board is connected, you should open the IDE and snap on Tools > Board > Arduino Uno to choose the board.

Select Serial Port

Next, you need to tell the Arduino which port you are utilizing on your PC. To choose the port, go to Instruments > Port and afterward select the port that says Arduino.

NOW THE NINTH PROJECT BEGINS

9) RGB LED

This undertaking will utilize a RGB Prompted look through an assortment of tones. RGB represents Red, Green and Blue and this LED can make almost limitless color combinations.

Parts Needed

• (1) Arduino Uno
• (1) USB A-to-B Cable
• (1) Breadboard – Half Size
• (1) RGB LED
• (3) 330 Ω Resistor
• (5) Jumper Wires

Project Diagram

Project Code

const int RED_PIN = 9;

const int GREEN_PIN = 10;

const int BLUE_PIN = 11;

const int DISPLAY_TIME = 1000;  // used in mainColors() to determine the 

// length of time each color is displayed.

void setup() //Configure the Arduino pins to be outputs to drive the LEDs

{

  pinMode(RED_PIN, OUTPUT);

  pinMode(GREEN_PIN, OUTPUT);

  pinMode(BLUE_PIN, OUTPUT);

}

void loop()

{

  mainColors();        // Red, Green, Blue, Yellow, Cyan, Purple, White

  //  showSpectrum();    // Gradual fade from Red to Green to Blue to Red

}

/******************************************************************

 * void mainColors()

 * This function displays the eight "main" colors that the RGB LED

 * can produce. If you'd like to use one of these colors in your 

 * own sketch, you can copy and paste that section into your code.

/*****************************************************************/

void mainColors()

{

  // all LEDs off

  digitalWrite(RED_PIN, LOW);

  digitalWrite(GREEN_PIN, LOW);

  digitalWrite(BLUE_PIN, LOW);

  delay(DISPLAY_TIME);

  // Red

  digitalWrite(RED_PIN, HIGH);

  digitalWrite(GREEN_PIN, LOW);

  digitalWrite(BLUE_PIN, LOW);

  delay(DISPLAY_TIME);

  // Green

  digitalWrite(RED_PIN, LOW);

  digitalWrite(GREEN_PIN, HIGH);

  digitalWrite(BLUE_PIN, LOW);

  delay(DISPLAY_TIME);

  // Blue

  digitalWrite(RED_PIN, LOW);

  digitalWrite(GREEN_PIN, LOW);

  digitalWrite(BLUE_PIN, HIGH);

  delay(DISPLAY_TIME);

  // Yellow (Red and Green)

  digitalWrite(RED_PIN, HIGH);

  digitalWrite(GREEN_PIN, HIGH);

  digitalWrite(BLUE_PIN, LOW);

  delay(DISPLAY_TIME);

  // Cyan (Green and Blue)

  digitalWrite(RED_PIN, LOW);

  digitalWrite(GREEN_PIN, HIGH);

  digitalWrite(BLUE_PIN, HIGH);

  delay(DISPLAY_TIME);

  // Purple (Red and Blue)

  digitalWrite(RED_PIN, HIGH);

  digitalWrite(GREEN_PIN, LOW);

  digitalWrite(BLUE_PIN, HIGH);

  delay(DISPLAY_TIME);

  // White (turn all the LEDs on)

  digitalWrite(RED_PIN, HIGH);

  digitalWrite(GREEN_PIN, HIGH);

  digitalWrite(BLUE_PIN, HIGH);

  delay(DISPLAY_TIME);

}

/******************************************************************

 * void showSpectrum()

 * 

 * Steps through all the colors of the RGB LED, displaying a rainbow.

 * showSpectrum() calls a function RGB(int color) that translates a number

 * from 0 to 767 where 0 = all RED, 767 = all RED

 *  

 * Breaking down tasks down into individual functions like this

 * makes your code easier to follow, and it allows. 

 * parts of your code to be re-used.

/*****************************************************************/

void showSpectrum()

{

  for (int x = 0; x <= 767; x++)

  {

    RGB(x);      // Increment x and call RGB() to progress through colors.

    delay(10);   // Delay for 10 ms (1/100th of a second) - to help the "smoothing"

  }

}

/******************************************************************

 * void RGB(int color)

 * 

 * RGB(###) displays a single color on the RGB LED.

 * Call RGB(###) with the number of a color you want

 * to display. For example, RGB(0) displays pure RED, RGB(255) 

 * displays pure green.

 * 

 * This function translates a number between 0 and 767 into a

 * specific color on the RGB LED. If you have this number count

 * through the whole range (0 to 767), the LED will smoothly

 * change color through the entire spectrum.

 * 

 * The "base" numbers are:

 * 0   = pure red

 * 255 = pure green

 * 511 = pure blue

 * 767 = pure red (again)

 * 

 * Numbers between the above colors will create blends. For

 * example, 640 is midway between 512 (pure blue) and 767

 * (pure red). It will give you a 50/50 mix of blue and red,

 * resulting in purple.

/*****************************************************************/

void RGB(int color)

{

  int redIntensity;

  int greenIntensity;

  int blueIntensity;

  color = constrain(color, 0, 767); // constrain the input value to a range of values from 0 to 767

    // if statement breaks down the "color" into three ranges:

  if (color <= 255)       // RANGE 1 (0 - 255) - red to green

  {

    redIntensity = 255 - color;    // red goes from on to off

    greenIntensity = color;        // green goes from off to on

    blueIntensity = 0;             // blue is always off

  }

  else if (color <= 511)  // RANGE 2 (256 - 511) - green to blue

  {

    redIntensity = 0;                     // red is always off

    greenIntensity = 511 - color;         // green on to off

    blueIntensity = color - 256;          // blue off to on

  }

  else                    // RANGE 3 ( >= 512)- blue to red

  {

    redIntensity = color - 512;         // red off to on

    greenIntensity = 0;                 // green is always off

    blueIntensity = 767 - color;        // blue on to off

  }

  // "send" intensity values to the Red, Green, Blue Pins using analogWrite()

  analogWrite(RED_PIN, redIntensity);

  analogWrite(GREEN_PIN, greenIntensity);

  analogWrite(BLUE_PIN, blueIntensity);

}