short : L

open: H

default address:0x27

(不同公司產品Address可能不同)

SDA-->A4

SCL-->A5

//1.

//先以此程式確定 Address

//Address Scanner

#include <Wire.h>

void setup()
{
Wire.begin();

Serial.begin(9600);
while (!Serial); // Leonardo: wait for serial monitor
Serial.println("\nI2C Scanner");
}

void loop()
{
byte error, address;
int nDevices;

Serial.println("Scanning...");

nDevices = 0;
for(address = 1; address < 127; address++ )
{
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the address.
Wire.beginTransmission(address);
error = Wire.endTransmission();

if (error == 0)
{
Serial.print("I2C device found at address 0x");
if (address<16)
Serial.print("0");
Serial.print(address,HEX);
Serial.println(" !");

nDevices++;
}
else if (error==4)
{
Serial.print("Unknow error at address 0x");
if (address<16)
Serial.print("0");
Serial.println(address,HEX);
}
}
if (nDevices == 0)
Serial.println("No I2C devices found\n");
else
Serial.println("done\n");

delay(5000); // wait 5 seconds for next scan
}

//18

/*

createChar()

Create a custom character (gylph) for use on the LCD. Up to eight characters of 5x8 pixels are supported (numbered 0 to 7).

*/

#include "LiquidCrystal_I2C.h"

LiquidCrystal_I2C lcd(0x3F,16,2);
byte charYear[8] = {
0x10,
0x1F,
0x02,
0x0F,
0x0A,
0x1F,
0x02,
0x00
};

void setup()
{
lcd.init(); // initialize the lcd
lcd.backlight();
lcd.createChar(0, charYear);
lcd.home();
lcd.write(0);

}

void loop()
{

}

//19

#include "LiquidCrystal_I2C.h"

LiquidCrystal_I2C lcd(0x3F,16,2);
byte charYear[8] = {
0x10,
0x1F,
0x02,
0x0F,
0x0A,
0x1F,
0x02,
0x00
};

byte heart[8] = {0x0,0xa,0x1f,0x1f,0xe,0x4,0x0,0x0};
void setup()
{
lcd.init(); // initialize the lcd
lcd.backlight();
lcd.createChar(0, charYear);
lcd.createChar(1, heart);
lcd.home();
lcd.print("Hello world...");

lcd.setCursor(0,1);//Change to 2nd row
lcd.write(0);
lcd.write(1);

}

void loop()
{
lcd.scrollDisplayRight();
delay(500);
lcd.scrollDisplayLeft();
delay(500);
}

//20

#include "LiquidCrystal_I2C.h"

byte bell[8] = {0x4,0xe,0xe,0xe,0x1f,0x0,0x4};
byte note[8] = {0x2,0x3,0x2,0xe,0x1e,0xc,0x0};
byte clock1[8] = {0x0,0xe,0x15,0x17,0x11,0xe,0x0};
byte heart[8] = {0x0,0xa,0x1f,0x1f,0xe,0x4,0x0};
byte duck[8] = {0x0,0xc,0x1d,0xf,0xf,0x6,0x0};
byte check[8] = {0x0,0x1,0x3,0x16,0x1c,0x8,0x0};
byte cross[8] = {0x0,0x1b,0xe,0x4,0xe,0x1b,0x0};
byte retarrow[8] = { 0x1,0x1,0x5,0x9,0x1f,0x8,0x4};

LiquidCrystal_I2C lcd(0x3F,16,2);

void setup()
{
lcd.init();
lcd.backlight();

lcd.createChar(0, bell);
lcd.createChar(1, note);
lcd.createChar(2, clock1);
lcd.createChar(3, heart);
lcd.createChar(4, duck);
lcd.createChar(5, check);
lcd.createChar(6, cross);
lcd.createChar(7, retarrow);
lcd.home();
for (int j=0; j<8; j++) {
   lcd.write(j);
}
}
void loop(){}