#define ledChannel 0
#define ledPin 5
#define frecuency 10000
#define resolution 8

void setup() {

  Serial.begin(115200);

pinMode(ledPin, OUTPUT);

ledcSetup(ledChannel, frecuency, resolution);
ledcAttachPin(ledPin, ledChannel);
}

void loop() {
//incremento
for(int dutycycle = 0; dutycycle <= 255; dutycycle++){
  ledcWrite(ledChannel, dutycycle);
  delay(10);
}

//decremento
for(int dutycycle = 255; dutycycle >= 0; dutycycle--){
  ledcWrite(ledChannel, dutycycle);
  delay(10);
}
}