diff --git a/lib/ssd1306/ssd1306.c b/lib/ssd1306/ssd1306.c
--- a/lib/ssd1306/ssd1306.c
+++ b/lib/ssd1306/ssd1306.c
@@ -208,25 +208,30 @@ static const char fontData[][5] =
     {0x00,0x00,0x7F,0x00,0x00},         //   ( 92)  | - 0x007C Vertical Line
     {0x00,0x41,0x36,0x08,0x00},         //   ( 93)  } - 0x007D Right Curly Bracket
     {0x02,0x01,0x02,0x04,0x02},         //   ( 94)  ~ - 0x007E Tilde
-    {0x08,0x14,0x2A,0x14,0x22},         //   ( 95) << - 0x00AB Left-Pointing Double Angle Quotation Mark
+	{0x08,0x14,0x2A,0x14,0x22},         //   ( 95) << - 0x00AB Left-Pointing Double Angle Quotation Mark
     {0x00,0x02,0x05,0x02,0x00},         //   ( 96)    - 0x00B0 Degree Sign
-//    {0x44,0x44,0x5F,0x44,0x44},         //   ( 97) +- - 0x00B1 Plus-Minus Sign
-//    {0x7E,0x20,0x20,0x10,0x3E},         //   ( 98)  u - 0x00B5 Micro Sign
-//    {0x22,0x14,0x2A,0x14,0x08},         //   ( 99) >> - 0x00BB Right-Pointing Double Angle Quotation Mark
-//    {0x30,0x48,0x45,0x40,0x20},         //   (100)  ? - 0x00BF Inverted Question Mark
-//    {0x22,0x14,0x08,0x14,0x22},         //   (101)  x - 0x00D7 Multiplcation Sign
-//    {0x08,0x08,0x2A,0x08,0x08},         //   (102)  + - 0x00F7 Division Sign
-//    {0x18,0x14,0x08,0x14,0x0C},         //   (103)    - 0x221E Infinity
-//    {0x44,0x4A,0x4A,0x51,0x51},         //   (104)  < - 0x2264 Less-Than or Equal to
-//    {0x51,0x51,0x4A,0x4A,0x44},         //   (105)  > - 0x2265 Greater-Than or Equal to
-//    {0x54,0x14,0x64,0x08,0x70},         //   (106)  .: - RF Symbol
-//    {0x70,0x7C,0x72,0x7C,0x70},         //   (107)  ^ - Lock symbol
-//    {0x70,0x5C,0x52,0x54,0x70},         //   (108)  / - Unlock symbol
-//    {0x0C,0x1E,0x3C,0x1E,0x0C},         //   (109)  <3 - Heart Symbol
-//    {0x18,0x22,0xFF,0x12,0x0C},         //   (110)  U - USB Symbol
+    {0x44,0x44,0x5F,0x44,0x44},         //   ( 97) +- - 0x00B1 Plus-Minus Sign
+    {0x7E,0x20,0x20,0x10,0x3E},         //   ( 98)  u - 0x00B5 Micro Sign
+    {0x22,0x14,0x2A,0x14,0x08},         //   ( 99) >> - 0x00BB Right-Pointing Double Angle Quotation Mark
+    {0x30,0x48,0x45,0x40,0x20},         //   (100)  ? - 0x00BF Inverted Question Mark
+    {0x22,0x14,0x08,0x14,0x22},         //   (101)  x - 0x00D7 Multiplication Sign
+    {0x08,0x08,0x2A,0x08,0x08},         //   (102)  + - 0x00F7 Division Sign
+    {0x18,0x14,0x08,0x14,0x0C},         //   (103)    - 0x221E Infinity
+    {0x44,0x4A,0x4A,0x51,0x51},         //   (104)  < - 0x2264 Less-Than or Equal to
+    {0x51,0x51,0x4A,0x4A,0x44},         //   (105)  > - 0x2265 Greater-Than or Equal to
+    {0x54,0x14,0x64,0x08,0x70},         //   (106)  .: - RF Symbol
+    {0x70,0x7C,0x72,0x7C,0x70},         //   (107)  ^ - Lock symbol
+    {0x70,0x5C,0x52,0x54,0x70},         //   (108)  / - Unlock symbol
+    {0x0C,0x1E,0x3C,0x1E,0x0C},         //   (109)  <3 - Heart Symbol
+    {0x18,0x22,0xFF,0x12,0x0C},         //   (110)  U - USB Symbol
+	{0x22,0x5d,0x22,0x00,0x00},			//   (111) ez updown
+	{0x14,0x3e,0x14,0x00,0x00},         //   (112) ez updown short
 };
+/*
 
 
+*/
+
 // Set start page
 static void setStartPage(unsigned char d)
 {
@@ -316,9 +321,9 @@ void ssd1306_drawlogo()
 
 
 // Print a single character
-void ssd1306_drawchar(char ascii, unsigned char row, unsigned char xPos)
+void ssd1306_drawchar(unsigned char ascii, unsigned char row, unsigned char xPos)
 {
-    const char *srcPointer = (char*)-1;
+    const unsigned char *srcPointer = (char*)-1;
 
     srcPointer = &fontData[(ascii-32)][0];
 
@@ -335,7 +340,7 @@ void ssd1306_drawchar(char ascii, unsign
 
 
 // Print a single large character
-void ssd1306_drawcharbig(char ascii, unsigned char row, unsigned char xPos)
+void ssd1306_drawcharbig(unsigned char ascii, unsigned char row, unsigned char xPos)
 {
     const char *srcPointer = (char*)-1;
 
@@ -399,11 +404,11 @@ void ssd1306_drawcharbig(char ascii, uns
 
 
 // Print a string to the display
-void ssd1306_drawstring(const char *dataPtr, unsigned char row, unsigned char xPos)
+void ssd1306_drawstring(const unsigned char *dataPtr, unsigned char row, unsigned char xPos)
 {
-    char *srcPointer;
+    unsigned char *srcPointer;
 
-    srcPointer = (char*)dataPtr;
+    srcPointer = (unsigned char*)dataPtr;
     ssd1306_drawchar(' ',row,xPos); // NBSP must be written first before the string start
 
     while(1)
@@ -417,7 +422,7 @@ void ssd1306_drawstring(const char *data
 
 
 // Print a string to the display, big font
-void ssd1306_drawstringbig(const char *dataPtr, unsigned char row, unsigned char xPos)
+void ssd1306_drawstringbig(const unsigned char *dataPtr, unsigned char row, unsigned char xPos)
 {
     char *srcPointer;