This monochrome display uses Philips PCD8544 internal driver chip. It is fun to program and use.
Display works only at 3.3V and have 3V communication levels. So level sifter is needed. Below is schematics. Two pins can be saved by connecting CS to ground and reset to Arduino reset pin. It will reset the screen automatically.
Driver code for display. For graphic operations use LcdWrite function directly.
const byte PIN_DC = 5; const byte PIN_SDIN = 4; const byte PIN_SCLK = 3; // send instruction command or data const boolean LCD_C = LOW; const boolean LCD_D = HIGH; // width and height of display const byte LCD_X = 84; const byte LCD_Y = 48; static const byte ASCII[][5] = { {0x00, 0x00, 0x00, 0x00, 0x00} // 20 ,{0x00, 0x00, 0x5f, 0x00, 0x00} // 21 ! ,{0x00, 0x07, 0x00, 0x07, 0x00} // 22 " ,{0x14, 0x7f, 0x14, 0x7f, 0x14} // 23 # ,{0x24, 0x2a, 0x7f, 0x2a, 0x12} // 24 $ ,{0x23, 0x13, 0x08, 0x64, 0x62} // 25 % ,{0x36, 0x49, 0x55, 0x22, 0x50} // 26 & ,{0x00, 0x05, 0x03, 0x00, 0x00} // 27 ' ,{0x00, 0x1c, 0x22, 0x41, 0x00} // 28 ( ,{0x00, 0x41, 0x22, 0x1c, 0x00} // 29 ) ,{0x14, 0x08, 0x3e, 0x08, 0x14} // 2a * ,{0x08, 0x08, 0x3e, 0x08, 0x08} // 2b + ,{0x00, 0x50, 0x30, 0x00, 0x00} // 2c , ,{0x08, 0x08, 0x08, 0x08, 0x08} // 2d - ,{0x00, 0x60, 0x60, 0x00, 0x00} // 2e . ,{0x20, 0x10, 0x08, 0x04, 0x02} // 2f / ,{0x3e, 0x51, 0x49, 0x45, 0x3e} // 30 0 ,{0x00, 0x42, 0x7f, 0x40, 0x00} // 31 1 ,{0x42, 0x61, 0x51, 0x49, 0x46} // 32 2 ,{0x21, 0x41, 0x45, 0x4b, 0x31} // 33 3 ,{0x18, 0x14, 0x12, 0x7f, 0x10} // 34 4 ,{0x27, 0x45, 0x45, 0x45, 0x39} // 35 5 ,{0x3c, 0x4a, 0x49, 0x49, 0x30} // 36 6 ,{0x01, 0x71, 0x09, 0x05, 0x03} // 37 7 ,{0x36, 0x49, 0x49, 0x49, 0x36} // 38 8 ,{0x06, 0x49, 0x49, 0x29, 0x1e} // 39 9 ,{0x00, 0x36, 0x36, 0x00, 0x00} // 3a : ,{0x00, 0x56, 0x36, 0x00, 0x00} // 3b ; ,{0x08, 0x14, 0x22, 0x41, 0x00} // 3c < ,{0x14, 0x14, 0x14, 0x14, 0x14} // 3d = ,{0x00, 0x41, 0x22, 0x14, 0x08} // 3e > ,{0x02, 0x01, 0x51, 0x09, 0x06} // 3f ? ,{0x32, 0x49, 0x79, 0x41, 0x3e} // 40 @ ,{0x7e, 0x11, 0x11, 0x11, 0x7e} // 41 A ,{0x7f, 0x49, 0x49, 0x49, 0x36} // 42 B ,{0x3e, 0x41, 0x41, 0x41, 0x22} // 43 C ,{0x7f, 0x41, 0x41, 0x22, 0x1c} // 44 D ,{0x7f, 0x49, 0x49, 0x49, 0x41} // 45 E ,{0x7f, 0x09, 0x09, 0x09, 0x01} // 46 F ,{0x3e, 0x41, 0x49, 0x49, 0x7a} // 47 G ,{0x7f, 0x08, 0x08, 0x08, 0x7f} // 48 H ,{0x00, 0x41, 0x7f, 0x41, 0x00} // 49 I ,{0x20, 0x40, 0x41, 0x3f, 0x01} // 4a J ,{0x7f, 0x08, 0x14, 0x22, 0x41} // 4b K ,{0x7f, 0x40, 0x40, 0x40, 0x40} // 4c L ,{0x7f, 0x02, 0x0c, 0x02, 0x7f} // 4d M ,{0x7f, 0x04, 0x08, 0x10, 0x7f} // 4e N ,{0x3e, 0x41, 0x41, 0x41, 0x3e} // 4f O ,{0x7f, 0x09, 0x09, 0x09, 0x06} // 50 P ,{0x3e, 0x41, 0x51, 0x21, 0x5e} // 51 Q ,{0x7f, 0x09, 0x19, 0x29, 0x46} // 52 R ,{0x46, 0x49, 0x49, 0x49, 0x31} // 53 S ,{0x01, 0x01, 0x7f, 0x01, 0x01} // 54 T ,{0x3f, 0x40, 0x40, 0x40, 0x3f} // 55 U ,{0x1f, 0x20, 0x40, 0x20, 0x1f} // 56 V ,{0x3f, 0x40, 0x38, 0x40, 0x3f} // 57 W ,{0x63, 0x14, 0x08, 0x14, 0x63} // 58 X ,{0x07, 0x08, 0x70, 0x08, 0x07} // 59 Y ,{0x61, 0x51, 0x49, 0x45, 0x43} // 5a Z ,{0x00, 0x7f, 0x41, 0x41, 0x00} // 5b [ ,{0x02, 0x04, 0x08, 0x10, 0x20} // 5c ¥ ,{0x00, 0x41, 0x41, 0x7f, 0x00} // 5d ] ,{0x04, 0x02, 0x01, 0x02, 0x04} // 5e ^ ,{0x40, 0x40, 0x40, 0x40, 0x40} // 5f _ ,{0x00, 0x01, 0x02, 0x04, 0x00} // 60 ` ,{0x20, 0x54, 0x54, 0x54, 0x78} // 61 a ,{0x7f, 0x48, 0x44, 0x44, 0x38} // 62 b ,{0x38, 0x44, 0x44, 0x44, 0x20} // 63 c ,{0x38, 0x44, 0x44, 0x48, 0x7f} // 64 d ,{0x38, 0x54, 0x54, 0x54, 0x18} // 65 e ,{0x08, 0x7e, 0x09, 0x01, 0x02} // 66 f ,{0x0c, 0x52, 0x52, 0x52, 0x3e} // 67 g ,{0x7f, 0x08, 0x04, 0x04, 0x78} // 68 h ,{0x00, 0x44, 0x7d, 0x40, 0x00} // 69 i ,{0x20, 0x40, 0x44, 0x3d, 0x00} // 6a j ,{0x7f, 0x10, 0x28, 0x44, 0x00} // 6b k ,{0x00, 0x41, 0x7f, 0x40, 0x00} // 6c l ,{0x7c, 0x04, 0x18, 0x04, 0x78} // 6d m ,{0x7c, 0x08, 0x04, 0x04, 0x78} // 6e n ,{0x38, 0x44, 0x44, 0x44, 0x38} // 6f o ,{0x7c, 0x14, 0x14, 0x14, 0x08} // 70 p ,{0x08, 0x14, 0x14, 0x18, 0x7c} // 71 q ,{0x7c, 0x08, 0x04, 0x04, 0x08} // 72 r ,{0x48, 0x54, 0x54, 0x54, 0x20} // 73 s ,{0x04, 0x3f, 0x44, 0x40, 0x20} // 74 t ,{0x3c, 0x40, 0x40, 0x20, 0x7c} // 75 u ,{0x1c, 0x20, 0x40, 0x20, 0x1c} // 76 v ,{0x3c, 0x40, 0x30, 0x40, 0x3c} // 77 w ,{0x44, 0x28, 0x10, 0x28, 0x44} // 78 x ,{0x0c, 0x50, 0x50, 0x50, 0x3c} // 79 y ,{0x44, 0x64, 0x54, 0x4c, 0x44} // 7a z ,{0x00, 0x08, 0x36, 0x41, 0x00} // 7b { ,{0x00, 0x00, 0x7f, 0x00, 0x00} // 7c | ,{0x00, 0x41, 0x36, 0x08, 0x00} // 7d } ,{0x10, 0x08, 0x08, 0x10, 0x08} // 7e ← ,{0x78, 0x46, 0x41, 0x46, 0x78} // 7f → }; void LcdCharacter(char character) { for (int index = 0; index < 5; index++) { LcdWrite(LCD_D, ASCII[character - 0x20][index]); } LcdWrite(LCD_D, 0x00); } void LcdClear(void) { // fill with blanks for (int index = 0; index < LCD_X * LCD_Y / 8; index++) { LcdWrite(LCD_D, 0x00); } // reset cursor position LcdWrite(LCD_C, 0x80); LcdWrite(LCD_C, 0x40); } void LcdInitialise(void) { pinMode(PIN_DC, OUTPUT); pinMode(PIN_SDIN, OUTPUT); pinMode(PIN_SCLK, OUTPUT); LcdWrite(LCD_C, 0x21 ); // LCD Extended Commands. LcdWrite(LCD_C, 0xB1 ); // Set LCD Vop (Contrast). LcdWrite(LCD_C, 0x04 ); // Set Temp coefficent. //0x04 LcdWrite(LCD_C, 0x14 ); // LCD bias mode 1:48. //0x13 LcdWrite(LCD_C, 0x20 ); // LCD Basic Commands LcdWrite(LCD_C, 0x0C ); // LCD in normal mode. } void LcdString(char *characters) { while (*characters) { LcdCharacter(*characters++); } } void LcdWrite(byte dc, byte data) { digitalWrite(PIN_DC, dc); shiftOut(PIN_SDIN, PIN_SCLK, MSBFIRST, data); } void setup(void) { LcdInitialise(); LcdClear(); LcdString("Juvar's blog"); } void loop(void) { // nothing here }