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lcd interface with 8051 microcontroller in tamil | How to fix LCD positi...

code:- LCD.h sbit rs = P0^0; sbit rw = P0^1; sbit en = P0^2; void delay(unsigned int dela) { unsigned int l,mm; for(mm=0;mm<100;mm++) for(l=0;l<dela;l++); } void lcdcmd(unsigned char cmd) { P2 = cmd; rs = 0; rw = 0; en = 1; delay(15); en = 0; delay(150); } void datawrt_lcd(unsigned char datas) { P2 = datas; rs = 1; rw = 0; en = 1; delay(15); en = 0; delay(150); } void display_lcd(unsigned int row, unsigned int colum, unsigned char *lcdstr) { if(row==1) { lcdcmd(0x80 + colum); } else if(row==2) { lcdcmd(0xc0 + colum); } while (*lcdstr !='\0') { datawrt_lcd(*lcdstr); lcdstr++; } } void lcd_init() { lcdcmd(0x38); lcdcmd(0x0C); lcdcmd(0x01); lcdcmd(0x80); } ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// main.c /////////////////////////////////////////////////////////

Gas leakage detector using Arduino with SMS alert | Gas Detecting Alarm ...

Code:- #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x3F, 16, 2); int temp=0,i,pos ; String stringVal = ""; const char offMessage[] = "Alarm off"; const char activeMessage[][16] = {"Gas Detected", "Please evacuate"}; const int piezo = 10; const int gasSensor = A0; int gas; void setup(){ pinMode(piezo, OUTPUT); pinMode(A0,INPUT); Serial.begin(9600); lcd.begin(); lcd.backlight(); lcd.print("Gas Leakage DTctr"); lcd.setCursor(0,1); lcd.print(" with SMS Alert "); // lcd.scrollDisplayLeft(); //scrolls display left by two positions delay(4000); gsm_init(); lcd.clear(); Serial.println("AT+CNMI=2,2,0,0,0"); delay(300); lcd.print("System Ready"); temp=0; } void loop() { int gas_level=readSensors(); lcd.clear(); if(gas_level>60) { setActive(); init_sms(); send_sms(); lcd_status(); } else

SMS BASED ELECTRONIC NOTICE BOARD USING GSM AND ARDUINO

code: #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x3F, 16, 2); #include <SoftwareSerial.h> #include <String.h> int led=13; int temp=0,i=0,x=0,k=0; char str[100],msg[32]; SoftwareSerial SIM800(10 , 11); void setup() { lcd.begin(); lcd.backlight(); SIM800.begin(9600); pinMode(led, OUTPUT); digitalWrite(led, HIGH); lcd.print("GSM Initilizing..."); gsm_init(); lcd.setCursor(0,0); lcd.print("Wireless Notice"); lcd.setCursor(0,1); lcd.print(" Board "); delay(2000); lcd.clear(); lcd.print("Anto's ATL E-Logger"); delay(500); lcd.setCursor(0,1); lcd.print("System Ready"); SIM800.println("AT+CNMI=2,2,0,0,0"); delay(500); SIM800.println("AT+CMGF=1"); delay(1000); digitalWrite(led, LOW); } void loop() { for(unsigned int t=0;t<30000;t++) { SIM800Event(); if(temp==1) { x=0,k=0,temp=0; while(x<i) { while(

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