[marco3020]

Buona sera a tutti ho provato a caricare quella libreria ma non va perche ha bisogno della libreria liquidcrytal e io invece ho la : #include <PCF8574_HD44780_I2C.h> quindi mi da erori su errori, ho provato a caricarla cosi:

//The full code is in library example file Quick_tour.ino
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
#include <PCF8574_HD44780_I2C.h>
#include <buttons.h>
#include <MENWIZ.h>
#include <EEPROM.h>

PCF8574_HD44780_I2C lcd(0x3F, 20, 4);

// DEFINE ARDUINO PINS FOR THE NAVIGATION BUTTONS
#define UP_BOTTON_PIN       9
#define DOWN_BOTTON_PIN     10
#define LEFT_BOTTON_PIN     7 
#define RIGHT_BOTTON_PIN    8
#define CONFIRM_BOTTON_PIN  12
#define ESCAPE_BOTTON_PIN   11

menwiz tree;
// create lcd obj using LiquidCrystal lib


int  list,sp=110;

void setup(){
  _menu *r,*s1,*s2;

  Serial.begin(9600);    
  tree.begin(PCF8574_HD44780_I2C lcd(0x3F, 20, 4);); //declare lcd object and screen size to menwiz lib

 lcd.init();           // LCD Initialization
  lcd.backlight( );      // Backlight ON
  lcd.clear();          // Clear the display
  
  r=tree.addMenu(MW_ROOT,NULL,F("Root"));
    s1=tree.addMenu(MW_SUBMENU,r, F("Node1"));
      s2=tree.addMenu(MW_VAR,s1, F("Node3"));
        s2->addVar(MW_LIST,&list);
        s2->addItem(MW_LIST, F("Option1"));
        s2->addItem(MW_LIST, F("Option2"));
        s2->addItem(MW_LIST, F("Option3"));
      s2=tree.addMenu(MW_VAR,s1, F("Node4"));
        s2->addVar(MW_AUTO_INT,&sp,0,120,10);  
    s1=tree.addMenu(MW_VAR,r, F("Node2"));
      s1->addVar(MW_ACTION,myfunc);
       tree.navButtons(UP_BOTTON_PIN,DOWN_BOTTON_PIN,LEFT_BOTTON_PIN,RIGHT_BOTTON_PIN,ESCAPE_BOTTON_PIN,CONFIRM_BOTTON_PIN);
  }

void loop(){
  tree.draw(); 
  }

void myfunc(){
  Serial.println("ACTION FIRED");
  }

e questo è lo'erroere

Arduino:1.6.5 (Windows 7), Scheda:"Arduino/Genuino Mega or Mega 2560, ATmega2560 (Mega 2560)"

quick_tour.ino: In function 'void setup()':
quick_tour error: expected primary-expression before 'lcd'
quick_tour error: expected primary-expression before ')' token
quick_tour error: expected ';' before ')' token
expected primary-expression before 'lcd'