Question

CODE WITH ARDUINO: With an RGB Led, Use the iterative loop (for loop) to make red, blue, and green. Use ‘analogWrite’ command inside the 'for loop.' Use the value ranges from 0-255 for this command. So, to activate any of the pins, the value should be 255. To turn off 0.

pattern:

First for loop Red light – delay – Second for loop for blue light – delay - Third for loop for green light - delay.

(The resulting lights will be all the combinations of three colors and of course red, blue and green)

Answer 1

Here our task is to create an arduino program which produce RED BLUE GREEN colour from an rgbled using 3 for loops

Points to remember before coding

• we have do drive led through analoge pins hence 3 variables should create for stores the pin number at which red blue green is going to be connected
• create a for loop which iterate for some number (say 50) and turn on one colour pin using Analogue write(255)
• after closing the for loop turn  off the same pin by analogwrite(0) and introduce some delay.Repaet above 2 steps for other colours

CODE

Working

(screenshots taken while simulating above code are shown below)

Text version of the code is given below

int red=A0; //declaring variables at which led doing to be connected
int green=A1;
int blue=A2;
int i,j,k; /iterating variables for for-loops
void setup() {   
pinMode(red,OUTPUT); //setting led pins as output
pinMode(green,OUTPUT);
pinMode(red,OUTPUT);
}
void loop() {
for(i=0;i<50;i++){ // for loop for red
analogWrite(red,255); //turning red on
}
analogWrite(red,0); //turning red off after loop
  
delay(200); //delay

for(i=0;i<50;i++){
analogWrite(blue,255);
}
analogWrite(blue,0);
  
delay(200);
  
for(i=0;i<50;i++){
analogWrite(green,255);
}
analogWrite(green,0);
delay(200);
}

Note :But remember the above task can be easily implemented without a for loop as follow