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diff --git a/samples/dashboard_4884/LCD4884.cpp b/samples/dashboard_4884/LCD4884.cpp
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+++ b/samples/dashboard_4884/LCD4884.cpp
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+/*
+Modified by Lauren
+version 0.3
+
+Any suggestions are welcome.
+
+Editors    : Lauren from DFRobot <Lauran.pan@gmail.com>
+             Stanley Huang <stanleyhuangyc@gmail.com>
+Date       : Feb. 11, 2012
+
+* Added LCD_putchar for basic console display
+* Have the back light under control.
+* Update the library and sketch to compatible with IDE V1.0 and earlier
+
+*/
+
+#include "LCD4884.h"
+#include "font_6x8.h"
+#include "font_big.h"
+
+#if defined(ARDUINO) && ARDUINO >= 100
+#include "Arduino.h"
+#else
+#include "WProgram.h"
+#include "WConstants.h"
+#endif
+
+
+extern "C" 
+{
+#include <avr/pgmspace.h>
+#include <avr/io.h>
+}
+
+#define NUM_COL 14
+#define NUM_ROW 5
+
+LCD4884::LCD4884():prev_char(0),char_mode(MENU_NORMAL)
+{};
+
+LCD4884 lcd = LCD4884();
+
+void LCD4884::backlight(unsigned char dat)
+{
+	if(dat==1)
+		digitalWrite(LCD_BL,HIGH);
+	else
+		digitalWrite(LCD_BL,LOW);
+}
+
+void LCD4884::LCD_init(void)
+{
+	for(unsigned char i = 2; i < 8; i++) {
+		pinMode(i,OUTPUT);
+		digitalWrite(i,LOW);
+	}
+
+	digitalWrite(LCD_RST,LOW);
+	delayMicroseconds(1);
+	digitalWrite(LCD_RST,HIGH);
+	
+	digitalWrite(SPI_CS,LOW);
+	delayMicroseconds(1);
+	digitalWrite(SPI_CS,HIGH);
+	delayMicroseconds(1);
+	digitalWrite(LCD_BL,HIGH);
+
+	LCD_write_byte(0x21, 0);
+	LCD_write_byte(0xc0, 0);
+	LCD_write_byte(0x06, 0);
+	LCD_write_byte(0x13, 0);
+	LCD_write_byte(0x20, 0);
+	LCD_clear();
+	LCD_write_byte(0x0c, 0);
+	
+	digitalWrite(SPI_CS,LOW);
+}
+  
+void LCD4884::LCD_write_byte(unsigned char dat, unsigned char dat_type)
+{
+	digitalWrite(SPI_CS,LOW);
+    if (dat_type == 0)
+		digitalWrite(LCD_DC,LOW);
+    else
+		digitalWrite(LCD_DC,HIGH);
+
+	for(unsigned char i=0; i<8; i++) { 
+		if(dat & 0x80) {
+			digitalWrite(SPI_MOSI,HIGH);
+		} else {
+			digitalWrite(SPI_MOSI,LOW);
+		} 
+		digitalWrite(SPI_SCK,LOW);
+		dat = dat << 1; 
+		digitalWrite(SPI_SCK,HIGH);
+	} 
+	digitalWrite(SPI_CS,HIGH);
+}
+
+void LCD4884::LCD_draw_bmp_pixel(unsigned char X,unsigned char Y,unsigned char *map,
+                  unsigned char Pix_x,unsigned char Pix_y)
+{
+    unsigned int i,n;
+    unsigned char row;
+    
+    if (Pix_y%8==0)
+		row=Pix_y/8;
+	else
+        row=Pix_y/8+1;
+    
+    for (n=0;n<row;n++) {
+		LCD_set_XY(X,Y);
+		for(i=0; i<Pix_x; i++) {
+			LCD_write_byte(map[i+n*Pix_x], 1);
+		}
+        Y++;                       
+	}      
+}
+
+void LCD4884::LCD_write_string(unsigned char X,unsigned char Y,char *s, char mode)
+  {
+    LCD_set_XY(X,Y);
+    while (*s) {
+		LCD_write_char(*s, mode);
+		s++;
+	}
+  }
+
+void LCD4884::LCD_write_string(char *s, char mode)
+  {
+    while (*s) {
+		LCD_write_char(*s, mode);
+		s++;
+	}
+  }
+
+void LCD4884::LCD_write_chinese(unsigned char X, unsigned char Y,unsigned char *c,unsigned char ch_with,unsigned char num,unsigned char line,unsigned char row) 
+{ 
+    LCD_set_XY(X,Y);                             
+    for (unsigned char i=0;i<num;) { 
+      for (unsigned char n=0; n<ch_with*2; n++) {  
+          if (n==ch_with) { 
+              if (i==0)
+				  LCD_set_XY(X,Y+1);
+              else
+                  LCD_set_XY((X+(ch_with+row)*i),Y+1); 
+          } 
+          LCD_write_byte(c[(i*ch_with*2)+n],1); 
+        } 
+      i++; 
+      LCD_set_XY((X+(ch_with+row)*i),Y); 
+    } 
+}
+
+
+void LCD4884::LCD_write_string_big ( unsigned char X,unsigned char Y, char *string, char mode )
+{
+    while ( *string ){
+        LCD_write_char_big( X, Y, *string , mode );
+        if(*string++ == '.')
+          X += 5;
+        else
+          X += 12;
+    }
+}
+
+/* write char in big font */ 
+void LCD4884::LCD_write_char_big (unsigned char X,unsigned char Y, unsigned char ch, char mode)
+{
+   unsigned char i, j;
+   unsigned char *pFont;
+   unsigned char ch_dat;
+   
+   pFont = (unsigned char *) big_number;
+   
+   switch (ch) {
+   case '.':
+    ch = 10;
+	break;
+   case '+':
+    ch = 11;
+	break;
+   case '-':
+    ch = 12;
+	break;
+   case ' ':
+	   for(i=0;i<3;i++) {	
+		 LCD_set_XY ( X, Y+i);
+		 for(j=0; j<16; j++) {
+		   LCD_write_byte( (mode == MENU_NORMAL)? 0 : 0xff, 1);
+		 }
+	   }
+	   return;
+	break;
+   default:
+    ch = ch & 0x0f;
+   }
+	
+   for(i=0;i<3;i++) {	
+	 LCD_set_XY ( X, Y+i);
+     for(j=0; j<16; j++){
+       ch_dat =  pgm_read_byte(pFont+ch*48 + i*16 +j);
+       LCD_write_byte( (mode == MENU_NORMAL)? ch_dat : (ch_dat^0xff), 1);
+     }
+   } 
+   
+  
+}
+  
+void LCD4884::LCD_write_char(unsigned char c, char mode)
+{
+    unsigned char line;
+    unsigned char *pFont;
+    byte ch;
+    
+    pFont = (unsigned char *)font6_8;
+    c -= 32;
+
+    for (line=0; line<6; line++) {
+		ch = pgm_read_byte(pFont+c*6+line);
+		LCD_write_byte( (mode==MENU_NORMAL)? ch: (ch^ 0xff) , 1);
+    }
+	 x = (x + 1) % NUM_COL;
+}
+
+  
+void LCD4884::LCD_set_XY(unsigned char X, unsigned char Y)
+  {
+    LCD_write_byte(0x40 | Y, 0);		// column
+    LCD_write_byte(0x80 | X, 0);         // row
+	x = X;
+  }
+
+
+void LCD4884::LCD_clear(void)
+  {
+    unsigned int i;
+
+    LCD_write_byte(0x0c, 0);			
+    LCD_write_byte(0x80, 0);			
+
+    for (i=0; i<504; i++)
+    LCD_write_byte(0, 1);
+
+	x = 0;
+  }
+
+void LCD4884::LCD_write_title(char* title)
+{
+	LCD_set_XY(0, 0);
+	for (char n = 0; n < NUM_COL; n++)
+       LCD_write_char(' ', MENU_HIGHLIGHT);
+	LCD_write_string((NUM_COL - strlen(title)) * 3, 0, title, MENU_HIGHLIGHT);
+	LCD_set_XY(0, 1);
+}
+
+void LCD4884::LCD_putchar(char c)
+{
+	if (prev_char == 27) {
+		switch (c) {
+		case '0':
+			LCD_clear();
+			break;
+		case '1':
+			LCD_set_XY(0, 0);
+			break;
+		case '2':
+			char_mode = MENU_NORMAL;
+			break;
+		case '3':
+			char_mode = MENU_HIGHLIGHT;
+			break;
+		case '4':
+			backlight(ON);
+			break;
+		case '5':
+			backlight(OFF);
+			break;
+		}
+	} else {
+		switch (c) {
+		case '\r':
+			for (char n = x; n < NUM_COL; n++) {
+				LCD_write_char(' ', char_mode);
+			}
+			break;
+		case '\n':
+			break;
+		default:
+			LCD_write_char(c, char_mode);
+		}
+	}
+	prev_char = c;
+}
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