DFR0091

3-wire Serial LCD Module (Arduino Compatible) (SKU:DFR0091) Introduction This LCD module uses a 128x64 liquid crystal display that support Chinese character , English characters and even graphics. It can exhibit 4 lines and 12 English characters/6 Chinese characters per line. It is suitable for interactive work with Arduino. It features a backlit control, pallerlel or serial control, contrast adjust. It can be connect to our interface shield via IDC6 socket and cables. connection diagram for LCD Module Mode Selection The LCD is shipped in Parallel mode by default. The PSB_ON switch is used to set the interface mode. To switch to 3-Wire mode, Set the switch to SPI. Code This sample is working under Parallel mode. You will need Arduino library which can be download here. Connection in Parallel mode: Fig1: Parallel_Mode /* LCD Arduino RS = 17; Analog Pin3 RW = 16; Analog Pin2 EN = 18; Analog Pin4 D0 = 8; D1 = 9; D2 = 10; D3 = 11; D4 = 4; D5 = 5; D6 = 6; D7 = 7; PIN15 PSB = 5V; */ #include "LCD12864R.h" #define AR_SIZE( a ) sizeof( a ) / sizeof( a[0] ) unsigned char show0[]={0xBB,0xFA,0xC6,0xF7,0xC8,0xCB,0xC3,0xCE,0xB9,0xA4,0xB3 ,0xA7};//DFRobot unsigned char show1[]="www.dfrobot.com";// void setup() { LCDA.Initialise(); // INIT SCREEN delay(100); } void loop() { LCDA.CLEAR();//Clear the screen delay(100); LCDA.DisplaySig(0,0,0x20);//Display space delay(100); LCDA.DisplayString(0,1,show0,AR_SIZE(show0));//LOGO delay(100); LCDA.DisplayString(2,0,show1,AR_SIZE(show1));;//LOGO while(1); } The following sample is working under 3-Wire mode. You will need the Arduino Library which can be downloaded here. Connection in 3-Wire mode:(2 Methods) Method1: Fig2: 3-Wire Mode_1 Method2: Fig2: 3-Wire Mode_2 /* 1. SPI Interface Inatruction clockPin --> SCK(EN) latchPin --> CS(RS) dataPin --> SID(RW) 2. Connection: 1)Turn the BL_ON Switch to the "ON" side; 2)Turn the PBS_ON Switch to the "SPI" side Method1: LCD Arduino EN Digital Pin 2 RS Digital Pin 7 RW Digital Pin 10 VCC 5V GND GND; Method2: LCD Arduino SCK clockPin(defined in the "initDriverPin" function) CS latchPin(defined in the "initDriverPin" function) SID dataPin (defined in the "initDriverPin" function) VCC 5V GND GND */ #include "LCD12864RSPI.h" #include "DFrobot_bmp.h" #include "DFrobot_char.h" #define AR_SIZE( a ) sizeof( a ) / sizeof( a[0] ) unsigned char wangzhi[]=" www.DFRobot.com "; unsigned char en_char1[]="ST7920 LCD12864 "; unsigned char en_char2[]="Test, Copyright "; unsigned char en_char3[]="by DFRobot ---> "; void setup() { LCDA.initDriverPin(2,7,10); //INIT SPI Interface LCDA.Initialise(); // INIT SCREEN delay(100); LCDA.DrawFullScreen(logo);//LOGO delay(5000); } void loop() { LCDA.CLEAR();//Clear Screen delay(100); LCDA.DisplayString(0,0,en_char1,16); delay(10); LCDA.DisplayString(1,0,en_char2,16); delay(10); LCDA.DisplayString(2,0,en_char3,16); delay(10); LCDA.DisplayString(3,0,wangzhi,16); delay(5000); LCDA.CLEAR();//Clear Screen delay(100); LCDA.DisplayString(0,0,show1,16); delay(10); LCDA.DisplayString(1,0,show2,16); delay(10); LCDA.DisplayString(2,0,show3,16); delay(10); LCDA.DisplayString(3,0,wangzhi,16);//LOGO delay(5000); } The following sample is working under 3-Wire mode. It demonstrates how to display integers on the LCD scrren. You will need the Arduino Library which can be downloaded here. /* 1. SPI Interface Inatruction clockPin --> SCK(EN) latchPin --> CS(RS) dataPin --> SID(RW) 2. Connection: 1)Turn the BL_ON Switch to the "ON" side; 2)Turn the PBS_ON Switch to the "SPI" side Method1: LCD Arduino EN Digital Pin 2 RS Digital Pin 7 RW Digital Pin 10 VCC 5V GND GND; Method2: LCD Arduino SCK clockPin(defined in the "initDriverPin" function) CS latchPin(defined in the "initDriverPin" function) SID dataPin (defined in the "initDriverPin" function) VCC 5V GND GND This sample shows how to use LCD12864 to display integer on the screen, and i t uses function itoa() from library stdlib.h */ #include "LCD12864RSPI.h" #include "DFrobot_bmp.h" #include "DFrobot_char.h" #include "stdlib.h" #define AR_SIZE( a ) sizeof( a ) / sizeof( a[0] ) int i=0; //counter, initial value is 0 unsigned char wangzhi[]=" www.DFRobot.cn "; unsigned char en_char1[]="ST7920 LCD12864 "; unsigned char en_char2[]="Test, Copyright "; unsigned char en_char3[]="by DFRobot ---> "; void setup() { LCDA.initDriverPin(2,7,10); //INIT SPI Interface LCDA.Initialise(); // INIT SCREEN delay(100); LCDA.DrawFullScreen(logo);//LOGO delay(2000); randomSeed(0); LCDA.CLEAR(); delay(100); LCDA.DisplayString(0,0,en_char1,16); delay(10); LCDA.DisplayString(1,0,en_char2,16); delay(10); LCDA.DisplayString(2,0,en_char3,16); delay(10); LCDA.DisplayString(3,0,wangzhi,16); delay(2000); } void loop() { LCDA.CLEAR();//clear the screen delay(100); int number= i; // the interger should be in the range from -32768 ~ 32767 char buf [16]; itoa(number,buf,10); //transform integer into string unsigned char temp[16]; for (int i=0;i