Skip to main content

Mission Tamil Electronics

Search This Blog

Room Temperature Based Fan speed Control Without Microcontroller

on August 29, 2018

Get link
Facebook
Twitter
Pinterest
Email
Other Apps

Get link
Facebook
Twitter
Pinterest
Email
Other Apps

Comments

Post a Comment

Popular Posts

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

Bidirectional Visitor Counter using IR sensors and Arduino

code:- #include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x27, 16, 2); const int Sensora = 2; const int sensorB = 3; const int output = 13; int count = 0; boolean sensorATriggered = false; unsigned long sensorATime; byte currStateA; byte prevStateA = HIGH; boolean sensorBTriggered = false; unsigned long sensorBTime; byte currStateB ; byte prevStateB = HIGH; void setup () { lcd.begin(); lcd.backlight(); Serial.begin (9600); pinMode (Sensora, INPUT); pinMode (sensorB, INPUT); pinMode (output, OUTPUT); lcd.print(" No of visitors "); } void loop () { lcd.setCursor(8,1); currStateA = digitalRead (Sensora); if (currStateA != prevStateA) { if (currStateA == LOW) { sensorATriggered = true; sensorATime = millis (); } } // prevStateA = currStateA; currStateB = digitalRead (sensorB); if (currStateB != prevStateB) { if (currStateB == LOW) { sensorBTriggered

Powered by Blogger

Theme images by lishenjun