Harish Projects

                                                        ...............ARDUINO CODE..................   #include <LiquidCrystal.h> LiquidCrystal lcd(7, 6, 5, 4, 3, 2);   int redLed = 10; int greenLed = 12; int buzzer = 8; int smokeA0 = A0; // Your threshold value int sensorThres = 250;   void setup() {   pinMode(redLed, OUTPUT);   pinMode(buzzer, OUTPUT);   pinMode(smokeA0, INPUT);   Serial.begin(9600);   lcd.begin(16,2); }   void loop() {   int analogSensor = analogRead(smokeA0);     Serial.print("Pin A0: ");   Serial.println(analogSensor);   lcd.print("Harish :");   lcd.print(analogSensor-250);   // Checks if it has reached the threshold value   if (analogSensor-250 > sensorThres)   {     digitalWrite(redLed, HIGH);     lcd.setCursor(0, 2);     lcd.print("Alert....!!!");     digitalWrite(12, LOW);     tone(buzzer, 1000, 250);   }   else   {     digitalWrite(redLed, LOW);     digitalWrite(12, HIGH);     lcd.setCursor(0, 2);     lcd.print("..

                                                             ...........ARDUINO CODE.......... int WATERPUMP = 13; //motor pump connected to pin 13 int sensor = 8; //sensor digital pin vonnected to pin 8 int val; //This variable stores the value received from Soil moisture sensor. void setup() {      pinMode(13,OUTPUT); //Set pin 13 as OUTPUT pin   pinMode(8,INPUT); //Set pin 8 as input pin, to receive data from Soil moisture sensor.   //Initialize serial and wait for port to open:   Serial.begin(9600); // opens serial port, sets data rate to 9600 bps   while (! Serial);// wait for serial port to connect. Needed for native USB   Serial.println("Speed 0 to 255"); } void loop()   {    if (Serial.available()) //loop to operate motor   {     int speed = Serial.parseInt(); // to read the number entered as text in the Serial Monitor      if (speed >= 0 && speed <= 255)     {       analogWrite(WATERPUMP, speed);// tuns on the motor at specified speed      }   }   val =

                            ARDUINO CODE const int trigPin = 3;     const int echoPin = 2;     #define DCwater_pump 8     // defines pins     long duration;     int distance;     void setup()  {     pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output     pinMode(echoPin, INPUT); // Sets the echoPin as an Input     pinMode(DCwater_pump, OUTPUT);     Serial.begin(9600); // For serial communication }     void loop()  {     digitalWrite(trigPin, LOW);     delayMicroseconds(2);     digitalWrite(trigPin, HIGH);     delayMicroseconds(10);     digitalWrite(trigPin, LOW);     duration = pulseIn(echoPin, HIGH);     //Distance calculation     distance= duration*0.034/2;     // Printinng the distance on the Serial Monitor     Serial.print("Distance: ");     Serial.println(distance);       if (distance < 20) {  digitalWrite(DCwater_pump,LOW);  Serial.println("DC Pump is ON Now!!");  delay(50); } else {  digitalWrite(DCwater_pump,HIGH);  Serial.println("DC Pump is