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64 lines
1.5 KiB
64 lines
1.5 KiB
3 years ago
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//www.elegoo.com
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//2016.12.9
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/*
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LiquidCrystal Library - Hello World
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Demonstrates the use a 16x2 LCD display. The LiquidCrystal
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library works with all LCD displays that are compatible with the
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Hitachi HD44780 driver. There are many of them out there, and you
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can usually tell them by the 16-pin interface.
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This sketch prints "Hello World!" to the LCD
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and shows the time.
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The circuit:
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* LCD RS pin to digital pin 7
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* LCD Enable pin to digital pin 8
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* LCD D4 pin to digital pin 9
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* LCD D5 pin to digital pin 10
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* LCD D6 pin to digital pin 11
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* LCD D7 pin to digital pin 12
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* LCD R/W pin to ground
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* LCD VSS pin to ground
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* LCD VCC pin to 5V
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* 10K resistor:
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* ends to +5V and ground
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* wiper to LCD VO pin (pin 3)
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Library originally added 18 Apr 2008
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by David A. Mellis
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library modified 5 Jul 2009
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by Limor Fried (http://www.ladyada.net)
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example added 9 Jul 2009
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by Tom Igoe
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modified 22 Nov 2010
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by Tom Igoe
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This example code is in the public domain.
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http://www.arduino.cc/en/Tutorial/LiquidCrystal
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*/
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// include the library code:
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#include <LiquidCrystal.h>
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// initialize the library with the numbers of the interface pins
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LiquidCrystal lcd(7, 8, 9, 10, 11, 12);
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void setup() {
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// set up the LCD's number of columns and rows:
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lcd.begin(16, 2);
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// Print a message to the LCD.
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lcd.print("Hello, World!");
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}
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void loop() {
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// set the cursor to column 0, line 1
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// (note: line 1 is the second row, since counting begins with 0):
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lcd.setCursor(0, 1);
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// print the number of seconds since reset:
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lcd.print(millis() / 1000);
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}
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