LED Brightness Control Using PWM

Solving Approach:

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Code

const int ledPin = 9;  
const int maxPWM = 255;

void setup() 
{
  pinMode(ledPin, OUTPUT);
}

void loop() 
{
  
  for (int duty = 0; duty <= maxPWM; duty++)
   {
    analogWrite(ledPin, duty);
    delay(2000 / maxPWM);  
  }

  
  for (int duty = maxPWM; duty >= 0; duty--) 
  {
    analogWrite(ledPin, duty);
    delay(1000 / maxPWM);  
  }
}




 

Output

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