Casil LED Backlit 16x2 LCD Display Module Project

An easy project using the Casil OPTO1156GTW-N I2C controlled LED Backlit 16x2 LCD Display Module that will work with mostly existing code.

Mar 5, 2020

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arduino

lcd display

i2c serial

Components and supplies

Jumper wires (generic)

Casil OPTO1156GTW-N 16x2 LCD Display Module with LED Back Light

Arduino Uno SMD Rev 3, PN: A000073

15 Ohms 1/4W Carbon Film Axial Resistor

1uF 25VDC Dipped Radial Tantalum Capacitor

28AWG 14-Wire Ribbon Cable

10K Ohm 1/4W Carbon Film Axial Resistor

Breadboard (generic)

SLW14S-1C7LF FFC & FPC Connector, 14P, ZIF, 1mm-Pitch

Tools and machines

Soldering iron (generic)

Solder Wire, Lead Free

Wire Stripper & Cutter, 32-20 AWG / 0.05-0.5mm² Solid & Stranded Wires

Project description

Code

LCD_ST7032.h subroutine program to interface with the LCD Display module.

c_cpp

1//-------------------------------------------------------------------------------------------
2//   LCD_ST7032.h - Arduino i2c master library for LCD ST7032
3// Olav Kallhovd sept2017
4//
5//   Tested Module    : ERC1602-4, EASTRISING TECHNOLOGY CO,.LTD.
6// Drive IC         :   ST7032
7// INTERFACE        : I2C
8// VDD              : 2.7V-5.5V
9// Tested   with MCU	: Arduino Uno, Attiny85@1mhz(5.0V), Attiny85@8mhz(5.0V) and ESP8266(3.3V)
10//-------------------------------------------------------------------------------------------
11
12#ifndef   LCD_ST7032_h
13#define LCD_ST7032_h
14
15#include <Arduino.h>
16
17#define   Write_Address                 0x3E //i2c address
18#define CNTRBIT                       0x00   //followed by command bytes
19#define CNTRBIT_CO                    0x80 //followed   by 1 command byte
20#define CNTRBIT_RS                    0x40 //after last control   byte, followed by DDRAM data byte(s)
21#define CLEAR_DISPLAY                 0x01   //Clear display
22#define RETURN_HOME                   0x02 //Cursor home to 00H
23#define   ENTRY_MODE_SET                0x04 //Sets cursor move direction and specifies display   shift.
24#define DISPLAY_ON_OFF                0x08 //display on, cursor on, cursor   position on
25#define FUNCTION_SET                  0x20 //DL: interface data is   8/4 bits, N: number of line is 2/1 DH: double height font, IS: instruction table   select
26#define SET_DDRAM_ADDRESS             0x80 //Set DDRAM address in address   counter
27#define CURSOR_OR_DISPLAY_SHIFT       0x10 //Set cursor moving and display   shift control bit, and the direction without changing DDRAM data.
28#define SET_CGRAM_ADDRESS              0x40 //Set CGRAM address in address counter
29#define INTERNAL_OSC_FREQ              0x10 //BS=1:1/4 bias, BS=0:1/5 bias, F2~0: adjust internal OSC frequency   for FR frequency.
30#define POWER_ICON_BOST_CONTR         0x50 //Ion: ICON display   on/off, Bon: set booster circuit on/off, C5,C4: Contrast set
31#define FOLLOWER_CONTROL               0x60 //Fon: set follower circuit on/off, Rab2~0: select follower amplified   ratio.
32#define CONTRAST_SET                  0x70 //C0-C3: Contrast set 
33#define   LINE_1_ADR                    0x80
34#define LINE_2_ADR                    0xC0
35
36//   Various flags and masks
37#define ENTRY_MODE_SET_S              0x01 //S: Shift   of entire display, see data sheet
38#define ENTRY_MODE_SET_ID             0x02   //I/D : Increment / decrement of DDRAM address (cursor or blink), see  data sheet
39#define   DISPLAY_ON_OFF_B              0x01 //cursor position on
40#define DISPLAY_ON_OFF_C               0x02 //cursor on
41#define DISPLAY_ON_OFF_D              0x04 //display   on
42#define FUNCTION_SET_IS               0x01 //IS: instruction table select
43#define   FUNCTION_SET_DH               0x04 //DH: double height font
44#define FUNCTION_SET_N                 0x08 //N: number of line is 2/1
45#define FUNCTION_SET_DL               0x10   //DL: interface data is 8/4 bits
46#define CURSOR_OR_DISPLAY_SHIFT_RL    0x04 //
47#define   CURSOR_OR_DISPLAY_SHIFT_SC    0x08 //
48#define INTERNAL_OSC_FREQ_F0          0x01   //F2~0: adjust internal OSC frequency for FR frequency.
49#define INTERNAL_OSC_FREQ_F1           0x02 //F2~0: adjust internal OSC frequency for FR frequency.
50#define   INTERNAL_OSC_FREQ_F2          0x04 //F2~0: adjust internal OSC frequency for FR   frequency.
51#define INTERNAL_OSC_FREQ_BS          0x08 //BS=1:1/4 bias (BS=0:1/5   bias)
52#define POWER_ICON_BOST_CONTR_Bon     0x04 //Ion: ICON display on/off
53#define   POWER_ICON_BOST_CONTR_Ion     0x08 //Bon: set booster circuit on/off
54#define   FOLLOWER_CONTROL_Rab0         0x01 //Rab2~0: select follower amplified ratio
55#define   FOLLOWER_CONTROL_Rab1         0x02 //Rab2~0: select follower amplified ratio
56#define   FOLLOWER_CONTROL_Rab2         0x04 //Rab2~0: select follower amplified ratio
57#define   FOLLOWER_CONTROL_Fon          0x08 //Fon: set follower circuit on/off
58
59#define   CONTRAST_MAX                  0x3F //limit range max value (0x00 - 0x3F)
60#define   CONTRAST_MIN                  0x10 //limit range min value (0x00 - 0x3F)
61#define   WRITE_DELAY_MS                  30 //see data sheet
62#define HOME_CLEAR_DELAY_MS			   1200 //see data sheet
63
64class LCD_ST7032: public Print 
65{
66	public:
67		LCD_ST7032();   
68		void begin();
69		void clear();
70		void home();
71		void display();
72		void   noDisplay();
73		void setCursor(uint8_t line, uint8_t pos);
74		void cursor();
75		void   noCursor();
76		void blink();
77		void noBlink();
78		void setcontrast(int   val);
79		void adjcontrast(int val);
80		uint8_t getcontrast();
81		virtual   size_t write(uint8_t chr);
82	
83	protected:
84		void Write_Instruction(uint8_t   cmd);
85		void Write_Data(uint8_t data);
86		uint8_t displayOnOffSetting =   (DISPLAY_ON_OFF | DISPLAY_ON_OFF_D);
87		uint8_t contrast = 0x18;
88};	
89
90#endif
91

//-------------------------------------------------------------------------------------------
//   LCD_ST7032.h - Arduino i2c master library for LCD ST7032
// Olav Kallhovd sept2017
//
//   Tested Module    : ERC1602-4, EASTRISING TECHNOLOGY CO,.LTD.
// Drive IC         :   ST7032
// INTERFACE        : I2C
// VDD              : 2.7V-5.5V
// Tested   with MCU	: Arduino Uno, Attiny85@1mhz(5.0V), Attiny85@8mhz(5.0V) and ESP8266(3.3V)
//-------------------------------------------------------------------------------------------

#ifndef   LCD_ST7032_h
#define LCD_ST7032_h

#include <Arduino.h>

#define   Write_Address                 0x3E //i2c address
#define CNTRBIT                       0x00   //followed by command bytes
#define CNTRBIT_CO                    0x80 //followed   by 1 command byte
#define CNTRBIT_RS                    0x40 //after last control   byte, followed by DDRAM data byte(s)
#define CLEAR_DISPLAY                 0x01   //Clear display
#define RETURN_HOME                   0x02 //Cursor home to 00H
#define   ENTRY_MODE_SET                0x04 //Sets cursor move direction and specifies display   shift.
#define DISPLAY_ON_OFF                0x08 //display on, cursor on, cursor   position on
#define FUNCTION_SET                  0x20 //DL: interface data is   8/4 bits, N: number of line is 2/1 DH: double height font, IS: instruction table   select
#define SET_DDRAM_ADDRESS             0x80 //Set DDRAM address in address   counter
#define CURSOR_OR_DISPLAY_SHIFT       0x10 //Set cursor moving and display   shift control bit, and the direction without changing DDRAM data.
#define SET_CGRAM_ADDRESS              0x40 //Set CGRAM address in address counter
#define INTERNAL_OSC_FREQ              0x10 //BS=1:1/4 bias, BS=0:1/5 bias, F2~0: adjust internal OSC frequency   for FR frequency.
#define POWER_ICON_BOST_CONTR         0x50 //Ion: ICON display   on/off, Bon: set booster circuit on/off, C5,C4: Contrast set
#define FOLLOWER_CONTROL               0x60 //Fon: set follower circuit on/off, Rab2~0: select follower amplified   ratio.
#define CONTRAST_SET                  0x70 //C0-C3: Contrast set 
#define   LINE_1_ADR                    0x80
#define LINE_2_ADR                    0xC0

//   Various flags and masks
#define ENTRY_MODE_SET_S              0x01 //S: Shift   of entire display, see data sheet
#define ENTRY_MODE_SET_ID             0x02   //I/D : Increment / decrement of DDRAM address (cursor or blink), see  data sheet
#define   DISPLAY_ON_OFF_B              0x01 //cursor position on
#define DISPLAY_ON_OFF_C               0x02 //cursor on
#define DISPLAY_ON_OFF_D              0x04 //display   on
#define FUNCTION_SET_IS               0x01 //IS: instruction table select
#define   FUNCTION_SET_DH               0x04 //DH: double height font
#define FUNCTION_SET_N                 0x08 //N: number of line is 2/1
#define FUNCTION_SET_DL               0x10   //DL: interface data is 8/4 bits
#define CURSOR_OR_DISPLAY_SHIFT_RL    0x04 //
#define   CURSOR_OR_DISPLAY_SHIFT_SC    0x08 //
#define INTERNAL_OSC_FREQ_F0          0x01   //F2~0: adjust internal OSC frequency for FR frequency.
#define INTERNAL_OSC_FREQ_F1           0x02 //F2~0: adjust internal OSC frequency for FR frequency.
#define   INTERNAL_OSC_FREQ_F2          0x04 //F2~0: adjust internal OSC frequency for FR   frequency.
#define INTERNAL_OSC_FREQ_BS          0x08 //BS=1:1/4 bias (BS=0:1/5   bias)
#define POWER_ICON_BOST_CONTR_Bon     0x04 //Ion: ICON display on/off
#define   POWER_ICON_BOST_CONTR_Ion     0x08 //Bon: set booster circuit on/off
#define   FOLLOWER_CONTROL_Rab0         0x01 //Rab2~0: select follower amplified ratio
#define   FOLLOWER_CONTROL_Rab1         0x02 //Rab2~0: select follower amplified ratio
#define   FOLLOWER_CONTROL_Rab2         0x04 //Rab2~0: select follower amplified ratio
#define   FOLLOWER_CONTROL_Fon          0x08 //Fon: set follower circuit on/off

#define   CONTRAST_MAX                  0x3F //limit range max value (0x00 - 0x3F)
#define   CONTRAST_MIN                  0x10 //limit range min value (0x00 - 0x3F)
#define   WRITE_DELAY_MS                  30 //see data sheet
#define HOME_CLEAR_DELAY_MS			   1200 //see data sheet

class LCD_ST7032: public Print 
{
	public:
		LCD_ST7032();   
		void begin();
		void clear();
		void home();
		void display();
		void   noDisplay();
		void setCursor(uint8_t line, uint8_t pos);
		void cursor();
		void   noCursor();
		void blink();
		void noBlink();
		void setcontrast(int   val);
		void adjcontrast(int val);
		uint8_t getcontrast();
		virtual   size_t write(uint8_t chr);
	
	protected:
		void Write_Instruction(uint8_t   cmd);
		void Write_Data(uint8_t data);
		uint8_t displayOnOffSetting =   (DISPLAY_ON_OFF | DISPLAY_ON_OFF_D);
		uint8_t contrast = 0x18;
};	

#endif

LCD_ST7032.h subroutine program to interface with the LCD Display module.

c_cpp

1//-------------------------------------------------------------------------------------------
2//  LCD_ST7032.h - Arduino i2c master library for LCD ST7032
3// Olav Kallhovd sept2017
4//
5//  Tested Module    : ERC1602-4, EASTRISING TECHNOLOGY CO,.LTD.
6// Drive IC         :  ST7032
7// INTERFACE        : I2C
8// VDD              : 2.7V-5.5V
9// Tested  with MCU	: Arduino Uno, Attiny85@1mhz(5.0V), Attiny85@8mhz(5.0V) and ESP8266(3.3V)
10//-------------------------------------------------------------------------------------------
11
12#ifndef  LCD_ST7032_h
13#define LCD_ST7032_h
14
15#include <Arduino.h>
16
17#define  Write_Address                 0x3E //i2c address
18#define CNTRBIT                       0x00  //followed by command bytes
19#define CNTRBIT_CO                    0x80 //followed  by 1 command byte
20#define CNTRBIT_RS                    0x40 //after last control  byte, followed by DDRAM data byte(s)
21#define CLEAR_DISPLAY                 0x01  //Clear display
22#define RETURN_HOME                   0x02 //Cursor home to 00H
23#define  ENTRY_MODE_SET                0x04 //Sets cursor move direction and specifies display  shift.
24#define DISPLAY_ON_OFF                0x08 //display on, cursor on, cursor  position on
25#define FUNCTION_SET                  0x20 //DL: interface data is  8/4 bits, N: number of line is 2/1 DH: double height font, IS: instruction table  select
26#define SET_DDRAM_ADDRESS             0x80 //Set DDRAM address in address  counter
27#define CURSOR_OR_DISPLAY_SHIFT       0x10 //Set cursor moving and display  shift control bit, and the direction without changing DDRAM data.
28#define SET_CGRAM_ADDRESS             0x40 //Set CGRAM address in address counter
29#define INTERNAL_OSC_FREQ             0x10 //BS=1:1/4 bias, BS=0:1/5 bias, F2~0: adjust internal OSC frequency  for FR frequency.
30#define POWER_ICON_BOST_CONTR         0x50 //Ion: ICON display  on/off, Bon: set booster circuit on/off, C5,C4: Contrast set
31#define FOLLOWER_CONTROL              0x60 //Fon: set follower circuit on/off, Rab2~0: select follower amplified  ratio.
32#define CONTRAST_SET                  0x70 //C0-C3: Contrast set 
33#define  LINE_1_ADR                    0x80
34#define LINE_2_ADR                    0xC0
35
36//  Various flags and masks
37#define ENTRY_MODE_SET_S              0x01 //S: Shift  of entire display, see data sheet
38#define ENTRY_MODE_SET_ID             0x02  //I/D : Increment / decrement of DDRAM address (cursor or blink), see  data sheet
39#define  DISPLAY_ON_OFF_B              0x01 //cursor position on
40#define DISPLAY_ON_OFF_C              0x02 //cursor on
41#define DISPLAY_ON_OFF_D              0x04 //display  on
42#define FUNCTION_SET_IS               0x01 //IS: instruction table select
43#define  FUNCTION_SET_DH               0x04 //DH: double height font
44#define FUNCTION_SET_N                0x08 //N: number of line is 2/1
45#define FUNCTION_SET_DL               0x10  //DL: interface data is 8/4 bits
46#define CURSOR_OR_DISPLAY_SHIFT_RL    0x04 //
47#define  CURSOR_OR_DISPLAY_SHIFT_SC    0x08 //
48#define INTERNAL_OSC_FREQ_F0          0x01  //F2~0: adjust internal OSC frequency for FR frequency.
49#define INTERNAL_OSC_FREQ_F1          0x02 //F2~0: adjust internal OSC frequency for FR frequency.
50#define  INTERNAL_OSC_FREQ_F2          0x04 //F2~0: adjust internal OSC frequency for FR  frequency.
51#define INTERNAL_OSC_FREQ_BS          0x08 //BS=1:1/4 bias (BS=0:1/5  bias)
52#define POWER_ICON_BOST_CONTR_Bon     0x04 //Ion: ICON display on/off
53#define  POWER_ICON_BOST_CONTR_Ion     0x08 //Bon: set booster circuit on/off
54#define  FOLLOWER_CONTROL_Rab0         0x01 //Rab2~0: select follower amplified ratio
55#define  FOLLOWER_CONTROL_Rab1         0x02 //Rab2~0: select follower amplified ratio
56#define  FOLLOWER_CONTROL_Rab2         0x04 //Rab2~0: select follower amplified ratio
57#define  FOLLOWER_CONTROL_Fon          0x08 //Fon: set follower circuit on/off
58
59#define  CONTRAST_MAX                  0x3F //limit range max value (0x00 - 0x3F)
60#define  CONTRAST_MIN                  0x10 //limit range min value (0x00 - 0x3F)
61#define  WRITE_DELAY_MS                  30 //see data sheet
62#define HOME_CLEAR_DELAY_MS			  1200 //see data sheet
63
64class LCD_ST7032: public Print 
65{
66	public:
67		LCD_ST7032();  
68		void begin();
69		void clear();
70		void home();
71		void display();
72		void  noDisplay();
73		void setCursor(uint8_t line, uint8_t pos);
74		void cursor();
75		void  noCursor();
76		void blink();
77		void noBlink();
78		void setcontrast(int  val);
79		void adjcontrast(int val);
80		uint8_t getcontrast();
81		virtual  size_t write(uint8_t chr);
82	
83	protected:
84		void Write_Instruction(uint8_t  cmd);
85		void Write_Data(uint8_t data);
86		uint8_t displayOnOffSetting =  (DISPLAY_ON_OFF | DISPLAY_ON_OFF_D);
87		uint8_t contrast = 0x18;
88};	
89
90#endif
91

//-------------------------------------------------------------------------------------------
//  LCD_ST7032.h - Arduino i2c master library for LCD ST7032
// Olav Kallhovd sept2017
//
//  Tested Module    : ERC1602-4, EASTRISING TECHNOLOGY CO,.LTD.
// Drive IC         :  ST7032
// INTERFACE        : I2C
// VDD              : 2.7V-5.5V
// Tested  with MCU	: Arduino Uno, Attiny85@1mhz(5.0V), Attiny85@8mhz(5.0V) and ESP8266(3.3V)
//-------------------------------------------------------------------------------------------

#ifndef  LCD_ST7032_h
#define LCD_ST7032_h

#include <Arduino.h>

#define  Write_Address                 0x3E //i2c address
#define CNTRBIT                       0x00  //followed by command bytes
#define CNTRBIT_CO                    0x80 //followed  by 1 command byte
#define CNTRBIT_RS                    0x40 //after last control  byte, followed by DDRAM data byte(s)
#define CLEAR_DISPLAY                 0x01  //Clear display
#define RETURN_HOME                   0x02 //Cursor home to 00H
#define  ENTRY_MODE_SET                0x04 //Sets cursor move direction and specifies display  shift.
#define DISPLAY_ON_OFF                0x08 //display on, cursor on, cursor  position on
#define FUNCTION_SET                  0x20 //DL: interface data is  8/4 bits, N: number of line is 2/1 DH: double height font, IS: instruction table  select
#define SET_DDRAM_ADDRESS             0x80 //Set DDRAM address in address  counter
#define CURSOR_OR_DISPLAY_SHIFT       0x10 //Set cursor moving and display  shift control bit, and the direction without changing DDRAM data.
#define SET_CGRAM_ADDRESS             0x40 //Set CGRAM address in address counter
#define INTERNAL_OSC_FREQ             0x10 //BS=1:1/4 bias, BS=0:1/5 bias, F2~0: adjust internal OSC frequency  for FR frequency.
#define POWER_ICON_BOST_CONTR         0x50 //Ion: ICON display  on/off, Bon: set booster circuit on/off, C5,C4: Contrast set
#define FOLLOWER_CONTROL              0x60 //Fon: set follower circuit on/off, Rab2~0: select follower amplified  ratio.
#define CONTRAST_SET                  0x70 //C0-C3: Contrast set 
#define  LINE_1_ADR                    0x80
#define LINE_2_ADR                    0xC0

//  Various flags and masks
#define ENTRY_MODE_SET_S              0x01 //S: Shift  of entire display, see data sheet
#define ENTRY_MODE_SET_ID             0x02  //I/D : Increment / decrement of DDRAM address (cursor or blink), see  data sheet
#define  DISPLAY_ON_OFF_B              0x01 //cursor position on
#define DISPLAY_ON_OFF_C              0x02 //cursor on
#define DISPLAY_ON_OFF_D              0x04 //display  on
#define FUNCTION_SET_IS               0x01 //IS: instruction table select
#define  FUNCTION_SET_DH               0x04 //DH: double height font
#define FUNCTION_SET_N                0x08 //N: number of line is 2/1
#define FUNCTION_SET_DL               0x10  //DL: interface data is 8/4 bits
#define CURSOR_OR_DISPLAY_SHIFT_RL    0x04 //
#define  CURSOR_OR_DISPLAY_SHIFT_SC    0x08 //
#define INTERNAL_OSC_FREQ_F0          0x01  //F2~0: adjust internal OSC frequency for FR frequency.
#define INTERNAL_OSC_FREQ_F1          0x02 //F2~0: adjust internal OSC frequency for FR frequency.
#define  INTERNAL_OSC_FREQ_F2          0x04 //F2~0: adjust internal OSC frequency for FR  frequency.
#define INTERNAL_OSC_FREQ_BS          0x08 //BS=1:1/4 bias (BS=0:1/5  bias)
#define POWER_ICON_BOST_CONTR_Bon     0x04 //Ion: ICON display on/off
#define  POWER_ICON_BOST_CONTR_Ion     0x08 //Bon: set booster circuit on/off
#define  FOLLOWER_CONTROL_Rab0         0x01 //Rab2~0: select follower amplified ratio
#define  FOLLOWER_CONTROL_Rab1         0x02 //Rab2~0: select follower amplified ratio
#define  FOLLOWER_CONTROL_Rab2         0x04 //Rab2~0: select follower amplified ratio
#define  FOLLOWER_CONTROL_Fon          0x08 //Fon: set follower circuit on/off

#define  CONTRAST_MAX                  0x3F //limit range max value (0x00 - 0x3F)
#define  CONTRAST_MIN                  0x10 //limit range min value (0x00 - 0x3F)
#define  WRITE_DELAY_MS                  30 //see data sheet
#define HOME_CLEAR_DELAY_MS			  1200 //see data sheet

class LCD_ST7032: public Print 
{
	public:
		LCD_ST7032();  
		void begin();
		void clear();
		void home();
		void display();
		void  noDisplay();
		void setCursor(uint8_t line, uint8_t pos);
		void cursor();
		void  noCursor();
		void blink();
		void noBlink();
		void setcontrast(int  val);
		void adjcontrast(int val);
		uint8_t getcontrast();
		virtual  size_t write(uint8_t chr);
	
	protected:
		void Write_Instruction(uint8_t  cmd);
		void Write_Data(uint8_t data);
		uint8_t displayOnOffSetting =  (DISPLAY_ON_OFF | DISPLAY_ON_OFF_D);
		uint8_t contrast = 0x18;
};	

#endif

Main program to control the LCD Display Module with the Arduino Uno

c_cpp

This main program makes use of the LCD_ST7032.h subroutine driver to interface with the LCD display

1//-------------------------------------------------------------------------------------------
2//  Tested Module    : OPTO1156GTW-N, CASIL SEMICONDUCTOR LTD.
3// Drive IC         :  ST7032
4// INTERFACE        : I2C
5// VDD              : 3.3V
6// Tested with  MCU	: Arduino Uno
7//-------------------------------------------------------------------------------------------
8
9#include  <LCD_ST7032.h>
10
11LCD_ST7032 lcd;
12
13void setup() {
14  lcd.begin();
15  lcd.setcontrast(63); //contrast value range is 0-63
16}
17
18void loop() {
19  
20  // Text for first line...
21  lcd.setCursor(0,0);  //LINE 1, ADDRESS 0
22  lcd.print("16X2 LCD DISPLAY");
23
24  // Text for second line...
25  lcd.setCursor(1,  1);  //LINE 2, ADDRESS 1
26  lcd.print("W/LED BACKLIGHT");
27}
28

//-------------------------------------------------------------------------------------------
//  Tested Module    : OPTO1156GTW-N, CASIL SEMICONDUCTOR LTD.
// Drive IC         :  ST7032
// INTERFACE        : I2C
// VDD              : 3.3V
// Tested with  MCU	: Arduino Uno
//-------------------------------------------------------------------------------------------

#include  <LCD_ST7032.h>

LCD_ST7032 lcd;

void setup() {
  lcd.begin();
  lcd.setcontrast(63); //contrast value range is 0-63
}

void loop() {
  
  // Text for first line...
  lcd.setCursor(0,0);  //LINE 1, ADDRESS 0
  lcd.print("16X2 LCD DISPLAY");

  // Text for second line...
  lcd.setCursor(1,  1);  //LINE 2, ADDRESS 1
  lcd.print("W/LED BACKLIGHT");
}

Downloadable files

Schematic diagram for Interfacing the Casil LCD Display to the Arduino Uno

Wire up as shown with with all component mentioned in the parts list

Schematic diagram for Interfacing the Casil LCD Display to the Arduino Uno

Wire up as shown with with all component mentioned in the parts list

Schematic diagram for Interfacing the Casil LCD Display to the Arduino Uno

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