8051 Interface – LCD

Interfacing an LCD (Liquid Crystal Display) with the 8051 microcontroller is a common practice in embedded systems for displaying information. Here’s a brief overview of 8051 Interface LCD

Hardware Connections: Connect the data lines (D0-D7) of the LCD to the GPIO pins of the 8051. Connect the control lines (RS, RW, E) to specific GPIO pins. Optionally, connect the backlight control pin and adjust the contrast using a potentiometer.
Initialization: Send initialization commands to the LCD to configure its operation mode, display settings, and other parameters. This typically involves sending specific command codes over the data lines.
Sending Data: To display characters or strings on the LCD, send the ASCII codes of the characters over the data lines while setting the RS (Register Select) line appropriately to indicate data transmission mode.
Sending Commands: To control the operation of the LCD (such as clearing the display, setting the cursor position, etc.), send command codes over the data lines while setting the RS line to indicate command transmission mode.
Timing Considerations: Ensure proper timing between data/command transmissions and the strobing of the E (Enable) line to ensure reliable communication with the LCD.
Busy Flag Checking: Check the busy flag of the LCD before sending new commands or data to ensure that the LCD is ready to receive new instructions.
Writing Custom Characters: Some LCDs allow you to define custom characters by programming specific patterns into the CGRAM (Character Generator RAM) of the LCD.
Example Code: Here’s a basic example of initializing and sending data to an LCD connected to an 8051 microcontroller:

Displaying Information: LCDs (Liquid Crystal Displays) are used to visually display information such as text, numbers, and symbols.
Interface Compatibility: They can be easily interfaced with 8051 microcontrollers through parallel or serial communication interfaces.
Textual Output: LCDs allow for the display of textual information, making them suitable for user interfaces or information panels.
Low Power Consumption: They typically consume less power compared to other display technologies, making them suitable for battery-powered devices.
Compact Size: LCD modules come in various sizes, allowing for flexibility in design and integration into compact devices.
Backlighting Options: Some LCD modules offer backlighting options, enabling visibility in low-light conditions.
Dynamic Display: LCDs can be dynamically updated to show changing information or real-time data.
Multipurpose Usage: They find applications in various domains such as digital clocks, thermometers, calculators, and industrial control panels.

Next will see about code of 8051 Interface LCD

Code Header file (LCD8.h)

#define LCD_First_Line     0x80
#define LCD_Second_Line    0xc0
#define LCD_Curser_On          0x0f
#define LCD_Curser_Off         0x0c
#define LCD_Clear_Display 0x01
#define Lcd8_Data_Port         P2

sbit Lcd8_RS = P0^0;
sbit Lcd8_RW = P0^1;
sbit Lcd8_EN = P0^2;

void Lcd8_Init();
void Lcd8_Command(unsigned char);
void Lcd8_Write(unsigned char,unsigned char);
void Lcd8_Display(unsigned char,const unsigned char*,unsigned int);
void Lcd8_Decimal2(unsigned char,unsigned char);
void Lcd8_Decimal3(unsigned char,unsigned char);
void Lcd8_Decimal4(unsigned char,unsigned int);
void Delay(unsigned int);

void Lcd8_Init()
{
    Lcd8_Command(0x38);     //to select function set
    Lcd8_Command(0x06);     //entry mode set
    Lcd8_Command(0x0c);     //display on
    Lcd8_Command(0x01);     //clear display
}

void Lcd8_Command(unsigned char com)
{
    Lcd8_Data_Port=com;
    Lcd8_EN=1;
    Lcd8_RS=Lcd8_RW=0;
    Delay(125);
    Lcd8_EN=0;
    Delay(125);
}

void Lcd8_Write(unsigned char com,unsigned char lr)
{
    Lcd8_Command(com);

    Lcd8_Data_Port=lr;          // Data 
    Lcd8_EN=Lcd8_RS=1;
    Lcd8_RW=0;
    Delay(125);
    Lcd8_EN=0;
    Delay(125);
}

void Lcd8_Display(unsigned char com,const unsigned char *word,unsigned int n)
{
    unsigned char Lcd_i;

    for(Lcd_i=0;Lcd_i<n;Lcd_i++)
    { 
        Lcd8_Write(com+Lcd_i,word[Lcd_i]);
    }
}

void Lcd8_Decimal2(unsigned char com,unsigned char val)
{
    unsigned int Lcd_hr,Lcd_t,Lcd_o;

    Lcd_hr=val%100;
    Lcd_t=Lcd_hr/10;
    Lcd_o=Lcd_hr%10;
    
    Lcd8_Write(com,Lcd_t+0x30);
    Lcd8_Write(com+1,Lcd_o+0x30);
}


void Lcd8_Decimal3(unsigned char com,unsigned char val)
{
    unsigned int Lcd_h,Lcd_hr,Lcd_t,Lcd_o;

    Lcd_h=val/100;
    Lcd_hr=val%100;
    Lcd_t=Lcd_hr/10;
    Lcd_o=Lcd_hr%10;
    
    Lcd8_Write(com,Lcd_h+0x30);
    Lcd8_Write(com+1,Lcd_t+0x30);
    Lcd8_Write(com+2,Lcd_o+0x30);
}

void Lcd8_Decimal4(unsigned char com,unsigned int val) 
{
    unsigned int Lcd_th,Lcd_thr,Lcd_h,Lcd_hr,Lcd_t,Lcd_o;

    val = val%10000;
    Lcd_th=val/1000;
    Lcd_thr=val%1000;
    Lcd_h=Lcd_thr/100;
    Lcd_hr=Lcd_thr%100;
    Lcd_t=Lcd_hr/10;
    Lcd_o=Lcd_hr%10;

    Lcd8_Write(com,Lcd_th+0x30);
    Lcd8_Write(com+1,Lcd_h+0x30);
    Lcd8_Write(com+2,Lcd_t+0x30);
    Lcd8_Write(com+3,Lcd_o+0x30);
}

void Delay(unsigned int del)
{
    while(del--);
}

Code Main File (LCD8_Interface_Main.c)

#include<reg51.h>
#include "LCD8.h"

void timer_init(void);

static unsigned char i;
static unsigned int x=100,y=150,cnt; 

void main()
{
    Lcd8_Init();
    Lcd8_Display(LCD_First_Line,"   Hello World  ",16);
    while(1)
    {
        Lcd8_Display(LCD_Second_Line," ArunEworld.com ",16);
    }//while(1)
}//void main()

Hits (since 2024-Jan-26) - 443

Arduino Interface – LCD

Liquid Crystal Library

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ESP8266 NodeMCU Interface – LCD

The ESP8266 NodeMCU Interface with LCD allows you to integrate an LCD with your NodeMCU board, enabling you to create projects with visual feedback.

We can easily add a 2×16 LCD to ESP8266.
But ESP8266 has less GPIO pins.
Two methods.
- Using i2c driver
- Using GPIO pins.

Code

This code provides basic functionality for interfacing with a 16×2 HD44780 LCD using an ESP8266 NodeMCU board. Adjustments may be needed based on your specific hardware setup and requirements.

-- Define GPIO pins for LCD connections
local PIN_RS = 1    -- GPIO5
local PIN_EN = 2    -- GPIO4
local PIN_D4 = 3    -- GPIO0
local PIN_D5 = 4    -- GPIO2
local PIN_D6 = 5    -- GPIO14
local PIN_D7 = 6    -- GPIO12

-- Function to send a command to LCD
local function lcd_command(cmd)
    gpio.write(PIN_RS, gpio.LOW)   -- Set RS pin LOW for command mode
    -- Send high nibble
    gpio.write(PIN_D4, bit.isset(cmd, 4) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D5, bit.isset(cmd, 5) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D6, bit.isset(cmd, 6) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D7, bit.isset(cmd, 7) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_EN, gpio.HIGH)
    gpio.write(PIN_EN, gpio.LOW)
    -- Send low nibble
    gpio.write(PIN_D4, bit.isset(cmd, 0) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D5, bit.isset(cmd, 1) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D6, bit.isset(cmd, 2) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D7, bit.isset(cmd, 3) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_EN, gpio.HIGH)
    gpio.write(PIN_EN, gpio.LOW)
    -- Delay for command execution
    tmr.delay(2000)  -- Adjust delay as needed
end

-- Function to send data to LCD
local function lcd_data(data)
    gpio.write(PIN_RS, gpio.HIGH)  -- Set RS pin HIGH for data mode
    -- Send high nibble
    gpio.write(PIN_D4, bit.isset(data, 4) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D5, bit.isset(data, 5) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D6, bit.isset(data, 6) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D7, bit.isset(data, 7) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_EN, gpio.HIGH)
    gpio.write(PIN_EN, gpio.LOW)
    -- Send low nibble
    gpio.write(PIN_D4, bit.isset(data, 0) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D5, bit.isset(data, 1) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D6, bit.isset(data, 2) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_D7, bit.isset(data, 3) and gpio.HIGH or gpio.LOW)
    gpio.write(PIN_EN, gpio.HIGH)
    gpio.write(PIN_EN, gpio.LOW)
    -- Delay for data transfer
    tmr.delay(2000)  -- Adjust delay as needed
end

-- Function to initialize the LCD
local function lcd_init()
    -- Set GPIO pins as outputs
    gpio.mode(PIN_RS, gpio.OUTPUT)
    gpio.mode(PIN_EN, gpio.OUTPUT)
    gpio.mode(PIN_D4, gpio.OUTPUT)
    gpio.mode(PIN_D5, gpio.OUTPUT)
    gpio.mode(PIN_D6, gpio.OUTPUT)
    gpio.mode(PIN_D7, gpio.OUTPUT)
    
    -- Initialization sequence
    tmr.delay(15000)  -- Wait for power-up
    lcd_command(0x33) -- Initialize
    lcd_command(0x32) -- Set to 4-bit mode
    lcd_command(0x28) -- 2 lines, 5x8 font
    lcd_command(0x0C) -- Display on, cursor off, blink off
    lcd_command(0x01) -- Clear display
    lcd_command(0x06) -- Increment cursor
end

-- Function to clear the LCD
local function lcd_clear()
    lcd_command(0x01) -- Clear display
end

-- Function to set cursor position
local function lcd_set_cursor(row, col)
    local offset = {0x00, 0x40}
    lcd_command(0x80 + offset[row] + col - 1)
end

-- Function to write a string to the LCD
local function lcd_write_string(str)
    for i = 1, #str do
        lcd_data(string.byte(str, i))
    end
end

-- Example usage
lcd_init()  -- Initialize the LCD
lcd_clear() -- Clear the LCD
lcd_set_cursor(1, 1) -- Set cursor to first row, first column
lcd_write_string("Hello, World!") -- Write a string to the LCD

Code Explanation

Section	Explanation
Initialization	– The code initializes the LCD module by setting up the GPIO pins for communication and configuring the LCD settings.
Function Definitions	– Defines helper functions for sending commands and data to the LCD, such as `lcd_send_command` and `lcd_send_data`. These functions handle the low-level communication with the LCD module.
LCD Initialization	– Initializes the LCD by sending a sequence of commands to configure its display settings, such as the number of lines, cursor behavior, and display on/off settings.
Clearing the Display	– Sends a command to clear the display and return the cursor to the home position.
Setting Cursor	– Sets the cursor position on the LCD. The `lcd_set_cursor` function takes the row and column numbers as parameters and calculates the corresponding position based on the LCD’s row length.
Writing Characters	– Writes characters to the LCD at the current cursor position. The `lcd_write_char` function sends data to the LCD to display the specified character.
Writing Strings	– Writes strings to the LCD. The `lcd_write_string` function iterates over each character in the string and calls `lcd_write_char` to display them sequentially.
Main Function	– Demonstrates how to use the defined functions to interact with the LCD. It initializes the LCD, clears the display, sets the cursor to the first position, and writes a string to the LCD.

Nokia-5110 PCD8544 Display interface

Required NodeMCU Modules (Firmware): GPIO Module
Required hardware: ESP8266 with Programmer (or) NodeMCU Dev Kit, Nokia 5110 PCD8544 LCD Display,
Required software tools: ESPlorer IDE Tool

Code

`lua
-- https://www.aruneworld.com/embedded/esp8266/esp8266-nodemcu/
-- Tested By : Arun(20170212)
-- Example Name : AEW_LCD_Nokia-5110_PCD8544.lua
-- Reference data sheet: https://www.sparkfun.com/datasheets/LCD/Monochrome/Nokia5110.pdf

--------------------------------------------------------------------------------
-- The following code referred by this post: http://playground.arduino.cc/Code/PCD8544
-- You need to configure the pins you are using here
PIN_RESET = 0
PIN_SCE = 1
PIN_DC = 2
PIN_SDIN = 3
PIN_SCLK = 4

local LCD_D = gpio.HIGH
local LCD_C = gpio.LOW
local LCD_X = 84
local LCD_Y = 48

local chars = "\0\0\0\0\0\0\0\95\0\0\0\7\0\7\0\20\127\20\127\20\36\42\127\42\18\35\19\8\100\98\54\73\85\34\80\0\5\3\0\0\0\28\34\65\0\0\65\34\28\0\20\8\62\8\20\8\8\62\8\8\0\80\48\0\0\8\8\8\8\8\0\96\96\0\0\32\16\8\4\2\62\81\73\69\62\0\66\127\64\0\66\97\81\73\70\33\65\69\75\49\24\20\18\127\16\39\69\69\69\57\60\74\73\73\48\1\113\9\5\3\54\73\73\73\54\6\73\73\41\30\0\54\54\0\0\0\86\54\0\0\8\20\34\65\0\20\20\20\20\20\0\65\34\20\8\2\1\81\9\6\50\73\121\65\62\126\17\17\17\126\127\73\73\73\54\62\65\65\65\34\127\65\65\34\28\127\73\73\73\65\127\9\9\9\1\62\65\73\73\122\127\8\8\8\127\0\65\127\65\0\32\64\65\63\1\127\8\20\34\65\127\64\64\64\64\127\2\12\2\127\127\4\8\16\127\62\65\65\65\62\127\9\9\9\6\62\65\81\33\94\127\9\25\41\70\70\73\73\73\49\1\1\127\1\1\63\64\64\64\63\31\32\64\32\31\63\64\56\64\63\99\20\8\20\99\7\8\112\8\7\97\81\73\69\67\0\127\65\65\0\2\4\8\16\32\0\65\65\127\0\4\2\1\2\4\64\64\64\64\64\0\1\2\4\0\32\84\84\84\120\127\72\68\68\56\56\68\68\68\32\56\68\68\72\127\56\84\84\84\24\8\126\9\1\2\12\82\82\82\62\127\8\4\4\120\0\68\125\64\0\32\64\68\61\0\127\16\40\68\0\0\65\127\64\0\124\4\24\4\120\124\8\4\4\120\56\68\68\68\56\124\20\20\20\8\8\20\20\24\124\124\8\4\4\8\72\84\84\84\32\4\63\68\64\32\60\64\64\32\124\28\32\64\32\28\60\64\48\64\60\68\40\16\40\68\12\80\80\80\60\68\100\84\76\68\0\8\54\65\0\0\0\127\0\0\0\65\54\8\0\16\8\8\16\8\120\70\65\70\120"

local function shiftOut(d, cl, data)
    for index = 0, 7 do
        if bit.isset(data, 7 - index) then
            gpio.write(d, gpio.HIGH)
        else
            gpio.write(d, gpio.LOW)
        end
        gpio.write(cl, gpio.HIGH)
        tmr.delay(5)
        gpio.write(cl, gpio.LOW)
    end
end

local function LCDWrite(dc, data)
    gpio.write(PIN_DC, dc)
    gpio.write(PIN_SCE, gpio.LOW)
    shiftOut(PIN_SDIN, PIN_SCLK, data)
    gpio.write(PIN_SCE, gpio.HIGH)
end

function LcdSetPins(sclk, sdin, dc, sce, reset)
    PIN_SCLK = sclk
    PIN_SDIN = sdin
    PIN_DC = dc
    PIN_SCE = sce
    PIN_RESET = reset
end

function LcdLocate(x, y)
    LCDWrite(LCD_C, 64 + x)
    LCDWrite(LCD_C, 128 + y)
end

function LcdCharacter(character)
    LCDWrite(LCD_D, 0x00)
    for index = 0, 5 do
        LCDWrite(LCD_D, character)
    end
    LCDWrite(LCD_D, 0x00)
end

function LcdClear()
    local c = 84 * 6
    for index = 0, c do
        tmr.delay(5)
        LCDWrite(LCD_D, 0)
    end
end

function LcdPrintChar(c)
    LCDWrite(LCD_D, 0)
    local char_index = 1 + (string.byte(c) - 32) * 5
    for index = 0, 4 do
        LCDWrite(L

Code Explanation

This Lua code initializes and interacts with a Nokia 5110 LCD module (PCD8544 controller) using an ESP8266 NodeMCU board. The code provides a basic framework for interfacing with the Nokia 5110 LCD module using the ESP8266 NodeMCU board, allowing for the display of text and basic graphics. Here’s the explanation:

Section	Explanation
Initialization and Pins	– Pins for interfacing with the LCD module are configured (RESET, SCE, DC, SDIN, SCLK). – References and credits are provided in the comments.
LCD Character Data	– Character data for the LCD is defined in the `chars` variable. Each character is represented by a series of bytes.
Shift Out Function	– Sends data to the LCD module by shifting bits out through a specified pin.
LCD Write Function	– Writes data to the LCD. Sets the appropriate data/command mode and then uses `shiftOut` to send the data.
Setting Pin Configuration	– Allows setting the pins used for communication with the LCD dynamically.
LCD Cursor Positioning	– Positions the cursor at the specified coordinates on the LCD.
Writing a Character	– Writes a single character to the LCD at the current cursor position.
Clearing the LCD	– Clears the entire LCD display.
Printing a Character	– Prints a character to the LCD, advancing the cursor position accordingly.
Initialization	– Initializes the LCD module with the appropriate settings.
Test Function	– A test function that initializes the LCD and prints some sample text.

ESP8266 NodeMCU Interface – LCD

NodeMCU Get Start

NodeMCU Build Firmware

NodeMCU Flash Firmware

NodeMCU IDE

ESP8266 NodeMCU Modules

NodeMCU Module–Firmware Info

NodeMCU Module – GPIO

NodeMCU Module – Node

NodeMCU Module – WiFi

NodeMCU Module – Timer

NodeMCU Module – I2C

NodeMCU Module – File

NodeMCU Module – NET

NodeMCU Module – HTTP

NodeMCU Module – MQTT

ESP8266 NodeMCU Interface

NodeMCU Interface LED

NodeMCU Interface Button

NodeMCU Interface 7 Seg

NodeMCU Interface LCD

NodeMCU Interface ADC

NodeMCU Interface DHT11

NodeMCU Interface MCP23008

NodeMCU Interface MCP23017

NodeMCU Interface ADXL345

NodeMCU Interface DS18B20

ESP8266 NodeMCU Tutorials

NodeMCU Tutorials Google Time

NodeMCU Tutorials WebServer

ESP8266 NodeMCU Projects

Imperial March Ringtone Play

WiFi Router Status Indicator

ESP8266 NodeMCU Project – Home Automation

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Embedded Interface – LCD

LCD stands for Liquid Crystal Display. It’s a type of flat-panel display technology commonly used in TVs, computer monitors, smartphones, and other electronic devices. This work by sandwiching a layer of liquid crystals between two transparent electrodes and two polarizing filters. When an electric current passes through the liquid crystals, they align to allow varying amounts of light to pass through, creating images or text on the screen. LCDs are known for their sharp image quality, energy efficiency, and relatively low cost compared to other display technologies like OLED (Organic Light Emitting Diode).

Sure, here are some advantages and disadvantages of LCD displays:

Advantages:

Energy Efficiency: LCDs typically consume less power compared to older display technologies like CRTs (Cathode Ray Tubes), making them more energy-efficient.
Slim Profile: LCD panels are generally thin and lightweight, making them suitable for slim and portable devices such as laptops, tablets, and smartphones.
Sharp Image Quality: LCDs can produce high-resolution images with excellent clarity and color accuracy, providing a visually pleasing viewing experience.
Versatility: LCD technology is versatile and can be used in various applications, including TVs, computer monitors, digital signage, and automotive displays.
Longevity: LCD panels have a relatively long lifespan compared to some other display technologies when properly maintained, providing years of reliable use.

Disadvantages:

Limited Viewing Angles: LCDs may exhibit color distortion or brightness loss when viewed from extreme angles, making them less suitable for applications where multiple viewers may be viewing the screen from different angles.
Potential Motion Blur: Some LCD displays, especially those with slower response times, may suffer from motion blur, resulting in less-than-optimal performance for fast-moving content such as gaming or sports.
Backlight Uniformity Issues: LCDs rely on a backlight source to illuminate the screen, and sometimes there can be issues with backlight uniformity, leading to uneven brightness or “clouding” in certain areas of the display.
Limited Contrast Ratio: While modern LCDs have improved contrast ratios, they may still not match the deep blacks and high contrast levels achievable with technologies like OLED.
Risk of Dead Pixels: LCD panels may develop dead pixels over time, resulting in small, permanently lit or unlit spots on the screen, which can be distracting, especially in high-resolution displays.

Despite these disadvantages, LCD technology remains widely used and continues to be improved upon with advancements in backlighting, panel technology, and image processing algorithms.

Examples

Display Character
Display String
Display Decimal
- Display one Digit Decimal
- Display Two Digit Decimal
- Display Three Digit Decimal
Auto scroll Display
Blink
Cursor On/Off
Custom Character
Display
Hello world
Scroll
Serial Display
Set Cursor
Text Direction

Interface with Micro-controllers

ESP8266 NodeMCU Interface – LCDs

Different LCD Displays

Nokia 5110 LCD Module with PCD8544
Nokia 6610
OLEDs
2×16 LCD- hd44780
Nextion Display

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Embedded Interface 7 Segment (Add Soon)

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Embedded Interface Button (Add Soon)

Embedded Interface EEPROM (Add Soon)

Embedded Interface LCD (Add Soon)

Embedded Interface LCD HD44780 (Add Soon)

Embedded Interface LED

Embedded Interface MCP23017

Embedded Interface Motor (Add Soon)

Embedded Interface PCF8574 and PCF8574A

Embedded Interface RTC (Add Soon)

Embedded Interface Switch

Embedded Interface Touch Kypad

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Embedded Interface – LCD HD44780

HD44780 compliant controllers 16×2 Character LCD is a very basic and low-cost LCD module that is commonly used in electronic products and projects.
16×2 means it contains 2 rows that can display 16 characters.
Its other variants such as 16×1 and 16×4 are also available in the market.
In these displays, each character is displayed using 5×8 or 5×10 dot matrix.

Experiments

Change Cursor Location Based on Key Input

LCD4 Bit Mode Functions

void Lcd4_Clear()   {    Lcd4_Cmd(0x00);    Lcd4_Cmd(0x01);    }    // clear screen 0x01

void Lcd4_DisplayOFF_BlinkON_CursorON()        {    Lcd4_Cmd(0x00);    Lcd4_Cmd(0x0B);    }    // 0x0B

void Lcd4_DisplayON_BlinkOFF_CursorOFF()    {    Lcd4_Cmd(0x00);    Lcd4_Cmd(0x0C);    }    // 0x0C

void Lcd4_DisplayON_BlinkOFF_CursorON()     {    Lcd4_Cmd(0x00);    Lcd4_Cmd(0x0D);    }    // 0x0C

void Lcd4_DisplayON_BlinkON_CursorOFF() {    Lcd4_Cmd(0x00);    Lcd4_Cmd(0x0E);    }    // 0x0E

//void Lcd4_Shift_Left()                      {   Lcd4_Cmd(0x01); Lcd4_Cmd(0x08); }   //  0x18

//void Lcd4_Shift_Right()                     {   Lcd4_Cmd(0x01); Lcd4_Cmd(0x0C); }   //  0x1C

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Embedded Interface LED

Embedded Interface MCP23017

Embedded Interface Motor (Add Soon)

Embedded Interface PCF8574 and PCF8574A

Embedded Interface RTC (Add Soon)

Embedded Interface Switch

Embedded Interface Touch Kypad

Embedded Interface RGB LED (Add Soon)

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Archives

8051 Interface – LCD

Uses of LCD

Code Header file (LCD8.h)

Code Main File (LCD8_Interface_Main.c)

Arduino Interface – LCD

Liquid Crystal Library

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ESP8266 NodeMCU Interface – LCD

LCD 16×2 HD44780 Display Interface

Code

Code Explanation

Nokia-5110 PCD8544 Display interface

Code

Code Explanation

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Embedded Interface – LCD

Advantages:

Disadvantages:

Examples

Interface with Micro-controllers

Different LCD Displays

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Embedded Interface – LCD HD44780

Experiments

LCD4 Bit Mode Functions

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