PWM Fade 18

Control LED brightness, buzzers, and motor driver speed inputs.

/*
  Roboda verified Arduino sample 0429
  Feature: PWM Fade
  Generated for online build, classroom practice, and hardware upload testing.
*/

const byte pwmPin = 11;
int level = 0;
int stepSize = 9;

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

void loop() {
  analogWrite(pwmPin, level);
  level += stepSize;
  if (level <= 0 || level >= 255) {
    stepSize = -stepSize;
  }
  delay(51);
}

How it works

Create a smooth analog-like output using PWM.

1. Use a PWM-capable pin from the map.
2. Connect an LED with resistor or a motor driver enable input.
3. Increase level until it reaches 255.
4. Reverse stepSize to fade back down.

Connections