SG90_Slow1.ino

#define servoPin 12
#define servoCh   0

#define servoBits 15
#define servoMax 32767

void degreeToLED(float inDegree) {
  float msec = inDegree / 90.0 * 0.5 + 1.5;
  int   duty = msec / 20.0 * (float)servoMax;
  Serial.println(duty);
  ledcWrite(servoCh, duty);
}


float pos = 0;


void setup() {
  Serial.begin(115200);
  ledcSetup(servoCh, 50, servoBits);
  ledcAttachPin(servoPin, servoCh);
}

void loop() {
  for (pos = -90; pos <= 90; pos += 0.1) { // goes from 0 degrees to 180 degrees
    // in steps of 1 degree
    degreeToLED(pos);              // tell servo to go to position in variable 'pos'
    delay(15);
  }
  for (pos = 90; pos >= -90; pos -= 0.1) { // goes from 180 degrees to 0 degrees
    degreeToLED(pos);              // tell servo to go to position in variable 'pos'
    delay(15);
  }
}