LCD1602 KEYPAD SHIELD

LCD1602 KEYPAD SHIELD

- Hiển thị : 16x02 kí tự

- Nguồn cấp chip : 4.5V - 5v

- Dòng điện : 2mA (5V)

- Nguồn cấp module : 5V

- Kích thước module : 2.95x4.35mm

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Code test : 

#include <LCD4Bit_mod.h>

LCD4Bit_mod lcd = LCD4Bit_mod (2);

GP2D12 char; 

char A, B; 

char str1 [] = "Renge:"; 

char str2 [] = "Renge Over"; 

char Str3 [] = "cm & lt";

Void set () 

{ 

  lcd.init (); 

  lcd.clear (); 

  lcd.printIn ("GP2D12 testing ...");  

}

Loop void () 

{ 

      GP2D12 read_gp2d12_range = (. 1); 

      IF (GP2D12> 80 || GP2D12 <10) 

        { 

          lcd.cursorTo (2,0);  

          lcd.printIn (str2);      

        } 

      the else 

        { 

          A = 0x30 + GP2D12 / 10 ; 

          B = 0x30 + 10% GP2D12;           

          lcd.cursorTo (2,. 3);  

          lcd.printIn (str1);     

          lcd.print (A);     

          lcd.print (B); 

          lcd.printIn (Str3);                     

        }     

    Delay (50 ); 

}

read_gp2d12_range a float (byte PIN)

{

int tmp;

tmp = analogRead (PIN);

IF (tmp<3) return -1;

return (6787.0/ ((a float) tmp - 3.0)) - 4.0;