Please explain to me how the following arduino code control the
smart home system design below.
#include "ESP8266.h"
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <dht.h>
#define DATA_PIN 2
#define SSID "abc"
#define PASSWORD "12345678"
byte termometerLogo[8] =
{
B00100,
B01010,
B01010,
B01110,
B01110,
B11111,
B11111,
B01110
};
byte humidityLogo[8] =
{
B00100,
B00100,
B01010,
B01010,
B10001,
B10001,
B10001,
B01110,
};
SoftwareSerial mySerial(10,11);
ESP8266 wifi(mySerial);
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);
dht DHT;
char buffData[150];
const int pinRelay1=3;
const int pinRelay2=4;
const int pinPir=6;
const int pinGas=5;
boolean notif;
boolean light=false,fan=false;
void setup(void)
{
lcd.begin(16,2);
pinMode(pinRelay1,OUTPUT);//light
pinMode(pinRelay2,OUTPUT);//fan
digitalWrite(pinRelay1,HIGH);
digitalWrite(pinRelay2,HIGH);
pinMode(pinPir,INPUT);
pinMode(pinGas,INPUT);
lcd.backlight();
delay(250);
lcd.noBacklight();
delay(250);
lcd.backlight();
lcd.clear();
lcd.createChar(1,termometerLogo);
lcd.createChar(2,humidityLogo);
lcd.setCursor(0,0);
lcd.print(" SMART HOME ");
lcd.setCursor(0,1);
lcd.print(" SYSTEM ");
wifi.setOprToStation();
if (wifi.joinAP(SSID, PASSWORD)) {
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Join Net OK");
} else {
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Join Net Fail");
}
delay(2000);
lcd.clear();
}
boolean updatenotif=false;
void loop(void)
{
int readData = DHT.read22(DATA_PIN);
float t = DHT.temperature;
float h = DHT.humidity;
int statusPir=digitalRead(pinPir);
int statusGas=digitalRead(pinGas);
if(!statusGas){
if(!updatenotif) notif=true;
updatenotif=true;
}else{
notif=false;
updatenotif=false;
}
lcd.setCursor(0, 0);
lcd.write(1);
lcd.setCursor(1, 0);
lcd.print((float)DHT.temperature, 2);
lcd.setCursor(6, 0);
lcd.print((char)223);
lcd.print("C");
lcd.setCursor(9, 0);
lcd.write(2);
lcd.setCursor(10, 0);
lcd.print((float)DHT.humidity, 2);
lcd.print("%");
if(DHT.temperature>27){
fan=true;
digitalWrite(pinRelay2,LOW); //pir temp to fan
}else{
fan=false; // relay active low
digitalWrite(pinRelay2,HIGH);
}
if(statusPir){
light=true;
digitalWrite(pinRelay1,LOW); //PIR sensor to light
}else{
light=false;
digitalWrite(pinRelay1,HIGH);
}
lcd.setCursor(0, 1);
if(statusPir){
lcd.print("ACTIVE");
}else{
lcd.print("PASSIVE");
}
lcd.setCursor(8, 1);
if(!statusGas){
lcd.print("DANGER");
}else{
lcd.print("NORMAL");
}
if (wifi.createTCP("lab-android.com", 80)) {
} else {
}
sprintf(buffData,"GET /abcde/mail.php?t=%d&h=%d&g=%d&p=%d&n=%d&l=%d&f=%d HTTP/1.1\r\nHost: www.lab-online.com\r\nConnection: close\r\n\r\n",int(t),int(h),statusGas,statusPir,notif,light,fan);
wifi.send((const uint8_t*)buffData, strlen(buffData));
if (wifi.releaseTCP()) {
notif=false;
} else {
}
lcd.clear();
}
Homework Answers
Above all are arduino program to setup he device here " # define" is a syntax : use to set constants for compiling in arduino and "#include" also syntax: used to include the libraries objects of those components. such as lcd and pir. This is the program for remote controlling of temperature.
SoftwareSerial mySerial(10,11); // this defines RX and TX
ESP8266 wifi(mySerial); // reading wifi data connected to these pins
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE); // calling LCD pins
dht DHT; // humidity and temperature sensor
char buffData[150]; //storing index pointed by buffer
const int pinRelay1=3; //setting relay
const int pinRelay2=4;
const int pinPir=6; // setting Pir value
const int pinGas=5;
boolean notif; // data structure : true or false
boolean light=false,fan=false; // is it light and fan on? set = false
void setup(void)
{
lcd.begin(16,2); // if false the boolean string hen lcd pin 16,2 get info
pinMode(pinRelay1,OUTPUT);//light
pinMode(pinRelay2,OUTPUT);//fan
digitalWrite(pinRelay1,HIGH); // turn on ligh
digitalWrite(pinRelay2,HIGH); // turn on fan
pinMode(pinPir,INPUT); // asking pir
pinMode(pinGas,INPUT);
lcd.backlight();
delay(250); // lcd delay time set
lcd.noBacklight();
delay(250);
lcd.backlight();
lcd.clear();
lcd.createChar(1,termometerLogo); // lcd shows or initiate thermometer
lcd.createChar(2,humidityLogo);
lcd.setCursor(0,0); // curser at initial position
lcd.print(" SMART HOME "); // displays smart home on screen
lcd.setCursor(0,1); // curser moves 1 pixel y-coordinate
lcd.print(" SYSTEM "); display system on screen
wifi.setOprToStation(); // calling wifi
if (wifi.joinAP(SSID, PASSWORD)) { // decision structure wifi ssid and password
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Join Net OK"); // display net ok on screen
} else { // decision structue: if false "wifi is not ok" do this operation
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Join Net Fail"); // show net fail on screen
}
delay(2000);
lcd.clear();
}
boolean updatenotif=false; // bollean value updating set false
void loop(void)
{
int readData = DHT.read22(DATA_PIN); // read the value of humidity sensor
float t = DHT.temperature; // temperature valve data in DHT
float h = DHT.humidity; // humidity value in DHT
int statusPir=digitalRead(pinPir); // read status of PIR sensor
int statusGas=digitalRead(pinGas); // and Gas
if(!statusGas){ // using ! = not ( it show true as false) operator ; reading status of gas
if(!updatenotif) notif=true; // if false set as true; here used not operator
updatenotif=true; // uodate as true
}else{ // otherwise means false
notif=false;
updatenotif=false; // then update as false
}
lcd.setCursor(0, 0);
lcd.write(1); // write data
lcd.setCursor(1, 0);
lcd.print((float)DHT.temperature, 2); // display DHT temperature in real number
lcd.setCursor(6, 0); // move x-position to 6
lcd.print((char)223); // display the degree
lcd.print("C"); // and C ; hear above and this command lines are to show centigrade
lcd.setCursor(9, 0);
lcd.write(2);
lcd.setCursor(10, 0);
lcd.print((float)DHT.humidity, 2); // display humidity
lcd.print("%"); / in percentage
if(DHT.temperature>27){ // comparision operator if temp > 27 true
fan=true; // fan set to on
digitalWrite(pinRelay2,LOW); //pir temp to fan // set relayy 2:: low means off the fan
}else{ // otherwise
fan=false; // relay active low :: fan set off
digitalWrite(pinRelay2,HIGH); // turn it on
}
if(statusPir){ // reading pir status
light=true; // light is on
digitalWrite(pinRelay1,LOW); //PIR sensor to light:; then off it
}else{
light=false;
digitalWrite(pinRelay1,HIGH); // otherwise turn it on
}
lcd.setCursor(0, 1);
if(statusPir){ // asking pir status
lcd.print("ACTIVE"); // display active
}else{ // otherwise
lcd.print("PASSIVE"); // show as passive or off
}
lcd.setCursor(8, 1);
if(!statusGas){ // read gas and used not operator
lcd.print("DANGER"); // display danger
}else{
lcd.print("NORMAL"); // otherwise shows as normal
}
if (wifi.createTCP("lab-android.com", 80)) { // create protocal b/w port and lab-android.com
} else { // otherwise
}
sprintf(buffData,"GET /abcde/mail.php?t=%d&h=%d&g=%d&p=%d&n=%d&l=%d&f=%d HTTP/1.1\r\nHost: www.lab-online.com\r\nConnection: close\r\n\r\n",int(t),int(h),statusGas,statusPir,notif,light,fan);
wifi.send((const uint8_t*)buffData, strlen(buffData)); /// ruun the buffering path and code; it sends data to host website through wifi communication path
if (wifi.releaseTCP()) { // if tcp off
notif=false; // notify it
} else {
}
lcd.clear(); //clear all values of lcd; reset
}
Add Answer to:
Please explain to me how the following arduino code control the smart home system design below. #...
Please explain how the smart home system circuit design below is connected and designed. The smar...
Please explain how the smart home system circuit design below is
connected and designed. The smart home will be able to automatic
on/off light through motion sensor, automatic on/off fan after
reaching 27 degree, send email when detect smoke. The bulb was
changed into a LED which is connected directly to the relay instead
of parallel with the fan.
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Please explain how the smart home system circuit design below is
connected and designed. The smart home will be able to automatic
on/off light through motion sensor, automatic on/off fan after
reaching 27 degree, send email when detect smoke. The bulb was
changed into a LED which is connected directly to the relay instead
of parallel with the fan.
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Code that I already have below, I do not know how to start it
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