1Pcs Character Lcd Module Serial Interface 2004 20X4 Yellow IIC/I2C/TWI/SP​​I Ic

 

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. 
 

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  • 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.
    		•

    2004 LiquidCrystal_I2C

    Arduino 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);
    }
     
    Sun, 21 Apr 2024 18:33:45 GMT 638493500257420166 1FE1571F10C2A454