ディスプレイには秋月電子のものを使用した。
ディスプレイ Arduino
LCD-DB7 14pin D4
LCD-DB6 13pin D5
LCD-DB5 12pin D6
LCD-DB4 11pin D7
LCD-E 6pin D11
LCD-R/W 5pin
LCD-RS 4pin D12
LCD-Vo 3pin potentiometerの中点で端点はGNDと+5v
2pin +5V
1pin GND
16pin GND
15pin +4.2V 抵抗100 ohmを経由する
Sketch
// include the library code:
#include <LiquidCrystal.h>
// initialize the library with the numbers of the interface pins
//LiquidCrystal(rs, enable, d4, d5, d6, d7)
LiquidCrystal lcd(12, 11, 7, 6, 5, 4);
void setup() {
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.home();
lcd.print("Hello, World!");
lcd.setCursor(0,1);
lcd.print("JA1NHL");
lcd.setCursor(10,1);
}
void loop() {
// Turn off the display:
lcd.noDisplay();
delay(500);
// Turn on the display:
lcd.display();
delay(500);
}
/*
LiquidCrystal Library - display() and noDisplay()
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 uses the
display() and noDisplay() functions to turn on and off
the display.
The circuit:
* LCD RS pin(pin 4) to digital pin 12
* LCD Enable pin(pin 6) to digital pin 11
* LCD DB4 pin(pin 11)to digital pin 7
* LCD DB5 pin(pin 12) to digital pin 6
* LCD DB6 pin(pin 13) to digital pin 5
* LCD DB7 pin(pin 14) to digital pin 4
* LCD R/W pin(pin 5) to ground
* 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
*/
完成すると Hello, World!
JA1NHL
と表示され、表示が点滅する。
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