#include <analogWrite.h>
#define fanPin1 19
#define fanPin2 18

void setup() {
  pinMode(fanPin1, OUTPUT);
  pinMode(fanPin2, OUTPUT);
}

void loop() {
  digitalWrite(fanPin1, LOW); //pwm = 0
  analogWrite(fanPin2, 180);
  delay(3000);
  digitalWrite(fanPin1, LOW);
  digitalWrite(fanPin2, LOW);
  delay(1000);
  digitalWrite(fanPin1, HIGH); //pwm = 255
  analogWrite(fanPin2, 210);
  delay(3000);
  digitalWrite(fanPin1, LOW);
  digitalWrite(fanPin2, LOW);
  delay(1000);

}