Pankhil's Den

Assignment 5: Input Devices & Phone Sensors

1).Various Sensors in Mobile Phone

2).Experiment Using One of the Mobile Sensor

By- Pankhil & Iman

We tried to measure the intensity of buzzer sound with "Sound Meter Application". The app was showing data according to the changes occuring in the buzzer sound (in decibles) and it plots the data in a graph which is shown below.

Temprature & Humidity Sensor With LCD Display

I have chosen the Temprature & Humidity sensor with LCD display for Indput Device assignment. So i initially staretd working with the Sensor only and then i conncted it with the LCD display to view the real time data.

Scope

We can incorporate this system with multiple devices and we can simultaneously operate other devices as well, we have tried this experiment with our Course project, where we have conncted a DC fan with the temparture sensor, and we succeeded to run fan speed according to the temprature changes

Circuit Diagram

Coding for the system

#include <LiquidCrystal.h>

#include <SimpleDHT.h>

//Declaring digital pin no 6 as the dht11 data pin

int pinDHT11 = 6;
SimpleDHT11 dht11;

//Declaring the lcd pins

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup() {
// Don't forget to choose 9600 at the port screen
  
  Serial.begin(9600);
 
//Telling our lcd to start up
  
  lcd.begin(16, 2);
   
   
}

void loop() {

//These serial codes are for getting readings on the port screen aswell as the LCD display, since they'll offer us a more detailed interface
  
  
  Serial.println("=================================");
  Serial.println("DHT11 readings...");
  
 
  byte temperature = 0;
  byte humidity = 0;
  int err = SimpleDHTErrSuccess;

//This bit will tell our Arduino what to do if there is some sort of an error at getting readings from our sensor
  if ((err = dht11.read(pinDHT11, &temperature, &humidity, NULL)) != SimpleDHTErrSuccess) {
    Serial.print("No reading , err="); Serial.println(err);delay(1000);
    return;
  }
  
  Serial.print("Readings: ");
  Serial.print((int)temperature); Serial.print(" Celcius, ");
  Serial.print((int)humidity); Serial.println(" %");
 
  //Telling our lcd to refresh itself every 0.75 seconds
  lcd.clear();
 
  //Choosing the first line and row
  lcd.setCursor(0,0);
  //Typing Temp: to the first line starting from the first row
  lcd.print("Temp: ");
  //Typing the temperature readings after "Temp: " 
  lcd.print((int)temperature);
  //Choosing the second line and first row
  lcd.setCursor(0,1);
  //Typing Humidity(%): to the second line starting from the first row
  lcd.print("Humidity(%): ");
  //Typing the humidity readings after "Humidity(%): "
  lcd.print((int)humidity);
 
  
  
  
  delay(750);
}