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  • 用Tinkercad学arduino之 LCD显示Hello World

    /*
      LiquidCrystal Library - Hello World
    
     Demonstrates the use a 16x2 LCD display.  The LiquidCrystal
     library works with all LCD displays that are compatible with the
     Hitachi HD44780 driver. There are many of them out there, and you
     can usually tell them by the 16-pin interface.
    
     This sketch prints "Hello World!" to the LCD
     and shows the time.
    
      The circuit:
     * LCD RS pin to digital pin 12
     * LCD Enable pin to digital pin 11
     * LCD D4 pin to digital pin 5
     * LCD D5 pin to digital pin 4
     * LCD D6 pin to digital pin 3
     * LCD D7 pin to digital pin 2
     * LCD R/W pin to ground
     * LCD VSS pin to ground
     * LCD VCC pin to 5V
     * 10K resistor:
     * ends to +5V and ground
     * wiper to LCD VO pin (pin 3)
    
     Library originally added 18 Apr 2008
     by David A. Mellis
     library modified 5 Jul 2009
     by Limor Fried (http://www.ladyada.net)
     example added 9 Jul 2009
     by Tom Igoe
     modified 22 Nov 2010
     by Tom Igoe
    
     This example code is in the public domain.
    
     http://www.arduino.cc/en/Tutorial/LiquidCrystal
     */
    
    // include the library code:
    #include <LiquidCrystal.h>
    
    // initialize the library with the numbers of the interface pins
    LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
    
    void setup() {
      // set up the LCD's number of columns and rows:
      lcd.begin(16, 2);
      // Print a message to the LCD.
      lcd.print("hello, world!");
    }
    
    void loop() {
      // set the cursor to column 0, line 1
      // (note: line 1 is the second row, since counting begins with 0):
      lcd.setCursor(0, 1);
      // print the number of seconds since reset:
      lcd.print(millis() / 1000);
    }
     
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  • 原文地址:https://www.cnblogs.com/meetrice/p/14078104.html
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