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#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x38,20,4);  // set the LCD address to 0x38 for a 20 chars and 4 line display

void setup()
{
  lcd.init();                      // initialize the lcd

  // Print a message to the LCD.
  lcd.backlight();
  lcd.print("Hello, world!");
}

void loop()
{

}
 

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Compiling 'LCD_DHT11' for 'Arduino Uno'
LCD_DHT11.ino : invalid conversion from 'int' to 't_backlighPol'
LCD_DHT11.ino : LiquidCrystal_I2C(uint8_t, uint8_t, t_backlighPol)'
LiquidCrystal_I2C.h : : In function 'void setup()':
LiquidCrystal_I2C.h : init()' is private
LCD_DHT11.ino : within this context
Error compiling
 

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Which version of Arduino is Visual Micro pointing to? (see tools>options) 

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Which version of Visual Micro is installed? (see tools>options) 

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Which version of Visual Studio or Atmel Studio are you using?