IIC/I2C/TWI/SP​​I Serial Interface2004 20X4 Character LCD Module Display Yellow

Product information

Product information

Specification:

but with a little change in the init lines:
LiquidCrystal_I2C lcd(0x20, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); // Addr, En, Rw, Rs, d4, d5, d6, d7, backlighpin, polarity
This is IIC Serial 20X4 LCD module . With this I2C interface LCD module, you will be able to realize data display via only 2 wires. If you already has I2C devices in your project, this LCD module actually cost no more resources at all. It is fantastic for Arduino based project.


Interface: I2C

I2C Address: 0x20

Sofware version :0022

SDA (DATA) -> analog input pin 4
SCL (CLOCK) -> analog input pin 5

Pin Definition : GND、VCC、SDA、SCL

Back lit (Yellow with black char color)

Supply voltage: 5V

Pcb Size : 60mm×99mm

Contrast Adjust : Potentiometer

Backlight Adjust : Jumper

XArduino Test Code：

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

LiquidCrystal_I2C lcd(0x27,16,2); //set the LCD address to 0x27 for a 16 chars and 2 line display

void setup()
{
lcd.init();
lcd.backlight();
lcd.setCursor(0, 0);
lcd.print("b2cqshop");
lcd.setCursor(0, 1);
lcd.print("Voltage: ");
lcd.setCursor(13, 1);
lcd.print("V");
}
void loop()
{
int val;
float temp;
val=analogRead(0);
temp=val/4.092;
val=(int)temp;//
lcd.setCursor(9, 1);
lcd.print(0x30+val/100,BYTE);
lcd.print(0x30+(val%100)/10,BYTE);
lcd.print('.');
lcd.print(0x30+val%10,BYTE);
delay(100);
}
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