gistfile1.txt

#define SIGNAL_5PIN 2
#define SIGNAL_6PIN 1
#define POWER_PIN   3
#define MOTOR_POWER 255
#define MOVE_TIME   20000
#define STOP_TIME   1000

void setup() {
  pinMode(SIGNAL_5PIN, OUTPUT);
  pinMode(SIGNAL_6PIN, OUTPUT);
}

void loop() {
  stop_mortor();
  delay(STOP_TIME);
  
  foward_mortor(MOTOR_POWER);
  delay(MOVE_TIME);

  stop_mortor();
  delay(STOP_TIME);

  back_mortor(MOTOR_POWER);
  delay(MOVE_TIME);
}

void stop_mortor() {
  digitalWrite(SIGNAL_6PIN, LOW);
  digitalWrite(SIGNAL_5PIN, LOW);
}

void foward_mortor(int power) {
  digitalWrite(SIGNAL_6PIN, HIGH);
  digitalWrite(SIGNAL_5PIN, LOW);

  analogWrite(POWER_PIN, power);
}

void back_mortor(int power) {
  digitalWrite(SIGNAL_6PIN, LOW);
  digitalWrite(SIGNAL_5PIN, HIGH);

  analogWrite(POWER_PIN, power);
}