text: #ifndef PNEUMATIC_H
  #define PNEUMATIC_H
  
  #include <Arduino.h>
  
  struct Pneumatic
  {
      Pneumatic(int pin);
      void up_and_down_start();
      void up_and_down();
      void up();
      void down();
      unsigned long time;
      int pin;
  };
  
  #endif