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How to control DHT11 sensor data with PHP and MySQL

Assalam-o-Alaikum!

Today’s topic is very interesting because today we will work on PHP and MySQL to control DHT11 data. We will write a code that get status from MySQL and based on that information you can stop receiving data or start receiving data.

Problem:

Here is a problem. Let’s suppose you need a system that stores Sensors On/Off status into Database and you have a frontend that will show the current status of that sensor’s ON/OFF. If sensor’s receiving data status is ON then you can OFF it or if it is OFF you can ON it. If sensor status is ON then data will start to add into database otherwise will stop.

Solution:

You have to perform 3 steps to complete this process.

Create a database
Write PHP/HTML/CSS code
Write code for Sensor on WeMos or Arduino

And that’s it. Now let’s begin with step No.1.

I assume that you setup a server (may be XAMPP or WAMPP) and now create database (I created temperature) and add some data:

CREATE TABLE `devices_status` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `device_name` varchar(50) DEFAULT NULL,
  `device_status` tinyint(1) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=latin1;

INSERT INTO `devices_status` VALUES ('1', 'home_sensor', '1');

CREATE TABLE `temps` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `temp` int(11) NOT NULL,
  `humidity` int(11) DEFAULT NULL,
  `time` time DEFAULT NULL,
  `dated` date DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

CREATE TABLE `devices_status` (

`id` int(11) NOT NULL AUTO_INCREMENT,

`device_name` varchar(50) DEFAULT NULL,

`device_status` tinyint(1) DEFAULT NULL,

PRIMARY KEY (`id`)

) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=latin1;

INSERT INTO `devices_status` VALUES ('1', 'home_sensor', '1');

CREATE TABLE `temps` (

`id` int(11) NOT NULL AUTO_INCREMENT,

`temp` int(11) NOT NULL,

`humidity` int(11) DEFAULT NULL,

`time` time DEFAULT NULL,

`dated` date DEFAULT NULL,

PRIMARY KEY (`id`)

) ENGINE=InnoDB DEFAULT CHARSET=latin1;

These are 2 tables one for controlling device status and 2^nd is for storing sensor data (Temperature and Humidity)

Now let’s move to our send part. We will write some PHP code along with some CSS. First let’s see what is in PHP code:

You need three PHP pages and one inc page, one inc page for storing MySQL connection, one PHP page for getting device status and second PHP page for storing data into database and last one is for showing you visual and functional button for sensor status . First of all see connection code. It is .inc file.

<?php
    $servername = "localhost";
    $username = "root";
    $password = "";
    $dbname = "temperature";
    // Create connection
     $conn	=	mysqli_connect($servername, $username,$password);
    $connection = mysqli_select_db($conn,$dbname);
?>

<?php

$servername = "localhost";

$username = "root";

$password = "";

$dbname = "temperature";

// Create connection

$conn = mysqli_connect($servername, $username,$password);

$connection = mysqli_select_db($conn,$dbname);

Change values as per your server and save it as inc.inc. Now let’s see PHP code that will get status from Database. Copy an paste below code and save it as “get_status.php” without quotes:

<?php
 include_once('inc.inc');
 
 // Check connection
 if ($conn->connect_error) {
 die("Connection failed: " . $conn->connect_error);
 }
 date_default_timezone_set("Asia/Karachi");
 $device_name = $_GET['device_name'];
 
 $sql = "SELECT device_status FROM devices_status WHERE device_name='$device_name'";
 $result = $conn->query($sql);
 if ($result->num_rows > 0) {
 while($row = $result->fetch_assoc())
 {
 echo $row['device_status'];
 }
 } else {
 echo "Error:" . $sql . "<br>" . $conn->error;
 }
 
 $conn->close();
?>

<?php

include_once('inc.inc');

// Check connection

if ($conn->connect_error) {

die("Connection failed: " . $conn->connect_error);

}

date_default_timezone_set("Asia/Karachi");

$device_name = $_GET['device_name'];

$sql = "SELECT device_status FROM devices_status WHERE device_name='$device_name'";

$result = $conn->query($sql);

if ($result->num_rows > 0) {

while($row = $result->fetch_assoc())

{

echo $row['device_status'];

}

} else {

echo "Error:" . $sql . "<br>" . $conn->error;

}

$conn->close();

This will get current status of Sensor status and echo it out. On the other side WeMos will catch this response as 1 or 0 and then perform action. Our next page is “add_data.php”. It will store data into database received from WeMos. Code is here:

<?php
    include_once('inc.inc');
    
    // Check connection
    if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
    }
    date_default_timezone_set("Asia/Karachi");
    $val = $_GET['temp'];
    $humd = $_GET['humidity'];
    
    
    
    $date = date('Y-m-d');
    $time = date('H:i:s');
    $sql = "INSERT INTO temps(temp,humidity,dated,time) VALUES ($val,$humd,'$date','$time');";
    
    if ($conn->query($sql) === TRUE) {
        echo "Saved Successfully!";
    } else {
        echo "Error:" . $sql . "<br>" . $conn->error;
    }
    
    $conn->close();
?>

<?php

include_once('inc.inc');

// Check connection

if ($conn->connect_error) {

die("Connection failed: " . $conn->connect_error);

}

date_default_timezone_set("Asia/Karachi");

$val = $_GET['temp'];

$humd = $_GET['humidity'];

$date = date('Y-m-d');

$time = date('H:i:s');

$sql = "INSERT INTO temps(temp,humidity,dated,time) VALUES ($val,$humd,'$date','$time');";

if ($conn->query($sql) === TRUE) {

echo "Saved Successfully!";

} else {

echo "Error:" . $sql . "<br>" . $conn->error;

}

$conn->close();

Very simple code. Just receiving $_GET[] request from somewhere and then stores it into database. Now let’s see last page, very interesting, copy and paste this code and save file as “status_page.php”:

<!DOCTYPE html>
<html lang="en">
    <head>
		<meta charset="UTF-8" />
        <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> 
		<meta name="viewport" content="width=device-width, initial-scale=1.0"> 
        <title>Button Switches with Checkboxes and CSS3 Fanciness</title>
 
        <link rel="stylesheet" type="text/css" href="css/style.css" />
<style type="text/css">
body{
background: #614385;  /* fallback for old browsers */
background: -webkit-linear-gradient(to right, #516395, #614385);  /* Chrome 10-25, Safari 5.1-6 */
background: linear-gradient(to right, #516395, #614385); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */

}
</style>
    </head>
    <body style="set_background">
    
    <?php
    include_once('inc.inc');
    
    if(isset($_GET['device_status']))
    {
       $status  =   $_GET['device_status'];
       if($status==1)
       {
        $update_status  =   0;
       }
       elseif($status==0)
       {
        $update_status  =   1;
       }
       $query   =   "UPDATE devices_status SET device_status='$update_status' WHERE device_name='home_sensor'";
       $conn->query($query);
    }

    
    $get_status_sql            =   "SELECT device_status FROM devices_status WHERE device_name='home_sensor'";
    $result         =   $conn->query($get_status_sql);
    
    if ($result->num_rows > 0) {
    while($row = $result->fetch_assoc())
    {
        $current_status = $row['device_status'];
        
        if($current_status == 1)
        {
            $checked    =   'checked';
        }
        else
        {
            $checked    =   '';
        }}}
    
    ?>
    
        <div class="container">
		
			<section class="main">
				<h1 style="text-align: center; padding: 30px; font-size: 35px; font-family: fantasy;">Controll Sensor Data with PHP and MySQL</h1>
				<div class="switch demo3">
					<input onClick="location.href='<?php echo $_SERVER['PHP_SELF']; ?>?device_status=<?php echo $current_status; ?>'" type="checkbox" value="<?php echo $current_status;?>" <?php echo $checked;?> />
                    <label><i></i></label>
                </div>
                <h2 style="text-align: center;">Created by ICE786 Technologies Team </h2>
				
			</section>
			
        </div>

    </body>
</html>

<!DOCTYPE html>

<head>

<title>Button Switches with Checkboxes and CSS3 Fanciness</title>

body{

background: #614385; /* fallback for old browsers */

background: -webkit-linear-gradient(to right, #516395, #614385); /* Chrome 10-25, Safari 5.1-6 */

background: linear-gradient(to right, #516395, #614385); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */

}

</style>

</head>

<?php

include_once('inc.inc');

if(isset($_GET['device_status']))

{

$status = $_GET['device_status'];

if($status==1)

{

$update_status = 0;

}

elseif($status==0)

{

$update_status = 1;

}

$query = "UPDATE devices_status SET device_status='$update_status' WHERE device_name='home_sensor'";

$conn->query($query);

}

$get_status_sql = "SELECT device_status FROM devices_status WHERE device_name='home_sensor'";

$result = $conn->query($get_status_sql);

if ($result->num_rows > 0) {

while($row = $result->fetch_assoc())

{

$current_status = $row['device_status'];

if($current_status == 1)

{

$checked = 'checked';

}

else

{

$checked = '';

}}}

<h1 style="text-align: center; padding: 30px; font-size: 35px; font-family: fantasy;">Controll Sensor Data with PHP and MySQL</h1>

<input onClick="location.href='<?php echo $_SERVER['PHP_SELF']; ?>?device_status=<?php echo $current_status; ?>'" type="checkbox" value="<?php echo $current_status;?>" <?php echo $checked;?> />

</div>

<h2 style="text-align: center;">Created by ICE786 Technologies Team </h2>

</section>

</div>

</body>

</html>

One thing that I want to tell you that visual button, generated with CSS is not my code I downloaded it from here

https://tympanus.net/Tutorials/CSS3ButtonSwitches/index3.html

However, PHP and some major changes in mine. For this page you also need a CSS code. Copy and paste below code create a folder “css” and save in this folder and name it as “style.css”. But remember this is not mine:

@import url('normalize.css');
@import url('demo.css');

/* GLOBALS */

*,
*:after,
*:before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

.switch {
  margin: 50px auto;
  position: relative;
}

.switch label {
  width: 100%;
  height: 100%;
  position: relative;
  display: block;
}

.switch input {
  top: 0; 
  right: 0; 
  bottom: 0; 
  left: 0;
  -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
  filter: alpha(opacity=0);
  -moz-opacity: 0;
  opacity: 0;
  z-index: 100;
  position: absolute;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

/* DEMO 1 */

.switch.demo1 {
  width: 100px;
  height: 100px;
}

.switch.demo1 label {
  border-radius: 50%;
  background: #eaeaea;
  box-shadow: 
      0 3px 5px rgba(0,0,0,0.25),
      inset 0 1px 0 rgba(255,255,255,0.3),
      inset 0 -5px 5px rgba(100,100,100,0.1),
      inset 0 5px 5px rgba(255,255,255,0.3);
}

.switch.demo1 label:after {
  content: "";
  position: absolute;
  top: -8%; right: -8%; bottom: -8%; left: -8%;
  z-index: -1;
  border-radius: inherit;
  background: #ddd;
  background: -moz-linear-gradient(#ccc, #fff);
  background: -ms-linear-gradient(#ccc, #fff);
  background: -o-linear-gradient(#ccc, #fff);
  background: -webkit-gradient(linear, 0 0, 0 100%, from(#ccc), to(#fff));
  background: -webkit-linear-gradient(#ccc, #fff);
  background: linear-gradient(#ccc, #fff);
  box-shadow: 
    inset 0 2px 1px rgba(0,0,0,0.15),
    0 2px 5px rgba(200,200,200,0.1);
}

.switch.demo1 label:before {
  content: "";
  position: absolute;
  width: 20%;
  height: 20%;
  border-radius: inherit;
  left: 40%;
  top: 40%;
  background: #969696;
  background: radial-gradient(40% 35%, #ccc, #969696 60%);
  box-shadow:
      inset 0 2px 4px 1px rgba(0,0,0,0.3),
      0 1px 0 rgba(255,255,255,1),
      inset 0 1px 0 white;
}

.switch.demo1 input:checked ~ label {
  background: #dedede;
  background: -moz-linear-gradient(#dedede, #fdfdfd);
  background: -ms-linear-gradient(#dedede, #fdfdfd);
  background: -o-linear-gradient(#dedede, #fdfdfd);
  background: -webkit-gradient(linear, 0 0, 0 100%, from(#dedede), to(#fdfdfd));
  background: -webkit-linear-gradient(#dedede, #fdfdfd);
  background: linear-gradient(#dedede, #fdfdfd);
}

.switch.demo1 input:checked ~ label:before {
  background: #25d025;
  background: radial-gradient(40% 35%, #5aef5a, #25d025 60%);
  box-shadow:
      inset 0 3px 5px 1px rgba(0,0,0,0.1),
      0 1px 0 rgba(255,255,255,0.4),
      0 0 10px 2px rgba(0, 210, 0, 0.5);
}

/* DEMO 2 */

.switch.demo2 {
  width: 50px;
  height: 100px;
}

.switch.demo2 label {
  background: #cbc7bc;
  margin: 0 auto;
  border-radius: 5px;
  box-shadow:
      inset 0 1px 0 white,
      0 0 0 1px #999,
      0 0 5px 1px rgba(0,0,0,0.2),
      0 2px 0 rgba(255,255,255,0.6),
      inset 0 10px 1px #e5e5e5,
      inset 0 11px 0 rgba(255,255,255,0.5),
      inset 0 -45px 3px #ddd;
}

.switch.demo2 label:after {
  content: "";
  position: absolute;
  top: -20px;
  left: -25px;
  bottom: -20px;
  right: -25px;
  background: #ccc;
  background: -moz-linear-gradient(#ddd, #bbb);
  background: -ms-linear-gradient(#ddd, #bbb);
  background: -o-linear-gradient(#ddd, #bbb);
  background: -webkit-gradient(linear, 0 0, 0 100%, from(#ddd), to(#bbb));
  background: -webkit-linear-gradient(#ddd, #bbb);
  background: linear-gradient(#ddd, #bbb);
  z-index: -1;
  border-radius: 5px;
  border: 1px solid #bbb;
  box-shadow:
      0 0 5px 1px rgba(0,0,0,0.15),
      0 3px 3px rgba(0,0,0,0.3),
      inset 0 1px 0 rgba(255,255,255,0.5);
}

.switch.demo2 label:before {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  background: #666;
  top: -13px;
  left: 20px;
  border-radius: 50%;
  box-shadow:
      0 120px 0 #666,
      0 1px 0 white,
      0 121px 0 white;
}

.switch.demo2 input:checked ~ label {
  background: #d2cbc3;
  box-shadow:
      inset 0 1px 0 white,
      0 0 0 1px #999,
      0 0 5px 1px rgba(0,0,0,0.2),
      inset 0 -10px 0 #aaa,
      0 2px 0 rgba(255,255,255,0.1),
      inset 0 45px 3px #e0e0E0,
      0 8px 6px rgba(0,0,0,0.18);
}

/* DEMO 3 */

.switch.demo3 {
  width: 180px;
  height: 50px;
}

.switch.demo3 label {
  display: block;
  width: 100%;
  height: 100%;
  background: #a5a39d;
  border-radius: 40px;
  box-shadow:
      inset 0 3px 8px 1px rgba(0,0,0,0.2),
      0 1px 0 rgba(255,255,255,0.5);
}

.switch.demo3 label:after {
  content: "";
  position: absolute;
  z-index: -1;
  top: -8px; right: -8px; bottom: -8px; left: -8px;
  border-radius: inherit;
  background: #ababab;
  background: -moz-linear-gradient(#f2f2f2, #ababab);
  background: -ms-linear-gradient(#f2f2f2, #ababab);
  background: -o-linear-gradient(#f2f2f2, #ababab);
  background: -webkit-gradient(linear, 0 0, 0 100%, from(#f2f2f2), to(#ababab));
  background: -webkit-linear-gradient(#f2f2f2, #ababab);
  background: linear-gradient(#f2f2f2, #ababab);
  box-shadow: 0 0 10px rgba(0,0,0,0.3),
        0 1px 1px rgba(0,0,0,0.25);
}

.switch.demo3 label:before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -18px; right: -18px; bottom: -18px; left: -18px;
  border-radius: inherit;
  background: #eee;
  background: -moz-linear-gradient(#e5e7e6, #eee);
  background: -ms-linear-gradient(#e5e7e6, #eee);
  background: -o-linear-gradient(#e5e7e6, #eee);
  background: -webkit-gradient(linear, 0 0, 0 100%, from(#e5e7e6), to(#eee));
  background: -webkit-linear-gradient(#e5e7e6, #eee);
  background: linear-gradient(#e5e7e6, #eee);
  box-shadow:
      0 1px 0 rgba(255,255,255,0.5);
  -webkit-filter: blur(1px);
  -moz-filter: blur(1px);
  -ms-filter: blur(1px);
  -o-filter: blur(1px);
  filter: blur(1px);
}

.switch.demo3 label i {
  display: block;
  height: 100%;
  width: 60%;
  border-radius: inherit;
  background: silver;
  position: absolute;
  z-index: 2;
  right: 40%;
  top: 0;
  background: #b2ac9e;
  background: -moz-linear-gradient(#f7f2f6, #b2ac9e);
  background: -ms-linear-gradient(#f7f2f6, #b2ac9e);
  background: -o-linear-gradient(#f7f2f6, #b2ac9e);
  background: -webkit-gradient(linear, 0 0, 0 100%, from(#f7f2f6), to(#b2ac9e));
  background: -webkit-linear-gradient(#f7f2f6, #b2ac9e);
  background: linear-gradient(#f7f2f6, #b2ac9e);
  box-shadow:
      inset 0 1px 0 white,
      0 0 8px rgba(0,0,0,0.3),
      0 5px 5px rgba(0,0,0,0.2);
}

.switch.demo3 label i:after {
  content: "";
  position: absolute;
  left: 15%;
  top: 25%;
  width: 70%;
  height: 50%;
  background: #d2cbc3;
  background: -moz-linear-gradient(#cbc7bc, #d2cbc3);
  background: -ms-linear-gradient(#cbc7bc, #d2cbc3);
  background: -o-linear-gradient(#cbc7bc, #d2cbc3);
  background: -webkit-gradient(linear, 0 0, 0 100%, from(#cbc7bc), to(#d2cbc3));
  background: -webkit-linear-gradient(#cbc7bc, #d2cbc3);
  background: linear-gradient(#cbc7bc, #d2cbc3);
  border-radius: inherit;
}

.switch.demo3 label i:before {
  content: "off";
  text-transform: uppercase;
  font-style: normal;
  font-weight: bold;
  color: rgba(0,0,0,0.4);
  text-shadow: 0 1px 0 #bcb8ae, 0 -1px 0 #97958e;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 24px;
  position: absolute;
  top: 50%;
  margin-top: -12px;
  right: -50%;
}

.switch.demo3 input:checked ~ label {
  background: #9abb82;
}

.switch.demo3 input:checked ~ label i {
  right: -1%;
}

.switch.demo3 input:checked ~ label i:before {
  content: "on";
  right: 115%;
  color: #82a06a;
  text-shadow: 
    0 1px 0 #afcb9b,
    0 -1px 0 #6b8659;
}

/* DEMO 4 */

.switch.demo4 {
  width: 150px;
  height: 150px;
}

.switch.demo4 label {
  border-radius: 50%;
  background: #b2ac9e;
  background: -moz-linear-gradient(#f7f2f6, #b2ac9e);
  background: -ms-linear-gradient(#f7f2f6, #b2ac9e);
  background: -o-linear-gradient(#f7f2f6, #b2ac9e);
  background: -webkit-gradient(linear, 0 0, 0 100%, from(#f7f2f6), to(#b2ac9e));
  background: -webkit-linear-gradient(#f7f2f6, #b2ac9e);
  background: linear-gradient(#f7f2f6, #b2ac9e);
  position: relative;
  color: #a5a39d;
  font-size: 70px;
  text-align: center;
  line-height: 150px;

  -webkit-transition: all 0.3s ease-out;
  -moz-transition: all 0.3s ease-out;
  -ms-transition: all 0.3s ease-out;
  -o-transition: all 0.3s ease-out;
  transition: all 0.3s ease-out;

  text-shadow: 0 2px 1px rgba(0,0,0,0.25);

  box-shadow:
    inset 0 2px 3px rgba(255,255,255,0.13),
    0 5px 8px rgba(0,0,0,0.3),
    0 10px 10px 4px rgba(0,0,0,0.3);
  z-index: -1;
}

.switch.demo4 label:after {
  content: ""; 
  position: absolute;
  left: -20px;
  right: -20px;
  top: -20px;
  bottom: -20px;
  z-index: -2;
  border-radius: inherit;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.1),
    0 1px 2px rgba(0,0,0,0.3),
    0 0 10px rgba(0,0,0,0.15);
  
}

.switch.demo4 label:before {
  content: ""; 
  position: absolute;
  left: -10px;
  right: -10px;
  top: -10px;
  bottom: -10px;
  z-index: -1;
  border-radius: inherit;
  box-shadow: inset 0 10px 10px rgba(0,0,0,0.13); 
  -webkit-filter:blur(1px);
  -moz-filter:blur(1px);
  -ms-filter:blur(1px);
  -o-filter:blur(1px);
  filter: blur(1px); 
}

.switch.demo4 input:checked ~ label {
  box-shadow:
    inset 0 2px 3px rgba(255,255,255,0.13),
    0 5px 8px rgba(0,0,0,0.35),
    0 3px 10px 4px rgba(0,0,0,0.2);
  color: #9abb82;
} 

.switch.demo4 .icon-off:after {
  content: "";
  display: block;
  position: absolute;
  width: 70%;
  height: 70%;
  left: 50%;
  top: 50%;
  z-index: -1;
  margin: -35% 0 0 -35%;
  border-radius: 50%;
  background: #d2cbc3;
  background: -moz-linear-gradient(#cbc7bc, #d2cbc3);
  background: -ms-linear-gradient(#cbc7bc, #d2cbc3);
  background: -o-linear-gradient(#cbc7bc, #d2cbc3);
  background: -webkit-gradient(linear, 0 0, 0 100%, from(#cbc7bc), to(#d2cbc3));
  background: -webkit-linear-gradient(#cbc7bc, #d2cbc3);
  background: linear-gradient(#cbc7bc, #d2cbc3);
  box-shadow:
    0 -2px 5px rgba(255,255,255,0.05),
    0 2px 5px rgba(255,255,255,0.1);
}

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@import url('normalize.css');

@import url('demo.css');

/* GLOBALS */

*:after,

*:before {

-webkit-box-sizing: border-box;

-moz-box-sizing: border-box;

box-sizing: border-box;

padding: 0;

margin: 0;

}

.switch {

margin: 50px auto;

position: relative;

}

.switch label {

width: 100%;

height: 100%;

position: relative;

display: block;

}

.switch input {

top: 0;

right: 0;

bottom: 0;

left: 0;

-ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";

filter: alpha(opacity=0);

-moz-opacity: 0;

opacity: 0;

z-index: 100;

position: absolute;

width: 100%;

height: 100%;

cursor: pointer;

}

/* DEMO 1 */

.switch.demo1 {

width: 100px;

height: 100px;

}

.switch.demo1 label {

border-radius: 50%;

background: #eaeaea;

box-shadow:

0 3px 5px rgba(0,0,0,0.25),

inset 0 1px 0 rgba(255,255,255,0.3),

inset 0 -5px 5px rgba(100,100,100,0.1),

inset 0 5px 5px rgba(255,255,255,0.3);

}

.switch.demo1 label:after {

content: "";

position: absolute;

top: -8%; right: -8%; bottom: -8%; left: -8%;

z-index: -1;

border-radius: inherit;

background: #ddd;

background: -moz-linear-gradient(#ccc, #fff);

background: -ms-linear-gradient(#ccc, #fff);

background: -o-linear-gradient(#ccc, #fff);

background: -webkit-gradient(linear, 0 0, 0 100%, from(#ccc), to(#fff));

background: -webkit-linear-gradient(#ccc, #fff);

background: linear-gradient(#ccc, #fff);

box-shadow:

inset 0 2px 1px rgba(0,0,0,0.15),

0 2px 5px rgba(200,200,200,0.1);

}

.switch.demo1 label:before {

content: "";

position: absolute;

width: 20%;

height: 20%;

border-radius: inherit;

left: 40%;

top: 40%;

background: #969696;

background: radial-gradient(40% 35%, #ccc, #969696 60%);

box-shadow:

inset 0 2px 4px 1px rgba(0,0,0,0.3),

0 1px 0 rgba(255,255,255,1),

inset 0 1px 0 white;

}

.switch.demo1 input:checked ~ label {

background: #dedede;

background: -moz-linear-gradient(#dedede, #fdfdfd);

background: -ms-linear-gradient(#dedede, #fdfdfd);

background: -o-linear-gradient(#dedede, #fdfdfd);

background: -webkit-gradient(linear, 0 0, 0 100%, from(#dedede), to(#fdfdfd));

background: -webkit-linear-gradient(#dedede, #fdfdfd);

background: linear-gradient(#dedede, #fdfdfd);

}

.switch.demo1 input:checked ~ label:before {

background: #25d025;

background: radial-gradient(40% 35%, #5aef5a, #25d025 60%);

box-shadow:

inset 0 3px 5px 1px rgba(0,0,0,0.1),

0 1px 0 rgba(255,255,255,0.4),

0 0 10px 2px rgba(0, 210, 0, 0.5);

}

/* DEMO 2 */

.switch.demo2 {

width: 50px;

height: 100px;

}

.switch.demo2 label {

background: #cbc7bc;

margin: 0 auto;

border-radius: 5px;

box-shadow:

inset 0 1px 0 white,

0 0 0 1px #999,

0 0 5px 1px rgba(0,0,0,0.2),

0 2px 0 rgba(255,255,255,0.6),

inset 0 10px 1px #e5e5e5,

inset 0 11px 0 rgba(255,255,255,0.5),

inset 0 -45px 3px #ddd;

}

.switch.demo2 label:after {

content: "";

position: absolute;

top: -20px;

left: -25px;

bottom: -20px;

right: -25px;

background: #ccc;

background: -moz-linear-gradient(#ddd, #bbb);

background: -ms-linear-gradient(#ddd, #bbb);

background: -o-linear-gradient(#ddd, #bbb);

background: -webkit-gradient(linear, 0 0, 0 100%, from(#ddd), to(#bbb));

background: -webkit-linear-gradient(#ddd, #bbb);

background: linear-gradient(#ddd, #bbb);

z-index: -1;

border-radius: 5px;

border: 1px solid #bbb;

box-shadow:

0 0 5px 1px rgba(0,0,0,0.15),

0 3px 3px rgba(0,0,0,0.3),

inset 0 1px 0 rgba(255,255,255,0.5);

}

.switch.demo2 label:before {

content: "";

position: absolute;

width: 8px;

height: 8px;

background: #666;

top: -13px;

left: 20px;

border-radius: 50%;

box-shadow:

0 120px 0 #666,

0 1px 0 white,

0 121px 0 white;

}

.switch.demo2 input:checked ~ label {

background: #d2cbc3;

box-shadow:

inset 0 1px 0 white,

0 0 0 1px #999,

0 0 5px 1px rgba(0,0,0,0.2),

inset 0 -10px 0 #aaa,

0 2px 0 rgba(255,255,255,0.1),

inset 0 45px 3px #e0e0E0,

0 8px 6px rgba(0,0,0,0.18);

}

/* DEMO 3 */

.switch.demo3 {

width: 180px;

height: 50px;

}

.switch.demo3 label {

display: block;

width: 100%;

height: 100%;

background: #a5a39d;

border-radius: 40px;

box-shadow:

inset 0 3px 8px 1px rgba(0,0,0,0.2),

0 1px 0 rgba(255,255,255,0.5);

}

.switch.demo3 label:after {

content: "";

position: absolute;

z-index: -1;

top: -8px; right: -8px; bottom: -8px; left: -8px;

border-radius: inherit;

background: #ababab;

background: -moz-linear-gradient(#f2f2f2, #ababab);

background: -ms-linear-gradient(#f2f2f2, #ababab);

background: -o-linear-gradient(#f2f2f2, #ababab);

background: -webkit-gradient(linear, 0 0, 0 100%, from(#f2f2f2), to(#ababab));

background: -webkit-linear-gradient(#f2f2f2, #ababab);

background: linear-gradient(#f2f2f2, #ababab);

box-shadow: 0 0 10px rgba(0,0,0,0.3),

0 1px 1px rgba(0,0,0,0.25);

}

.switch.demo3 label:before {

content: "";

position: absolute;

z-index: -1;

top: -18px; right: -18px; bottom: -18px; left: -18px;

border-radius: inherit;

background: #eee;

background: -moz-linear-gradient(#e5e7e6, #eee);

background: -ms-linear-gradient(#e5e7e6, #eee);

background: -o-linear-gradient(#e5e7e6, #eee);

background: -webkit-gradient(linear, 0 0, 0 100%, from(#e5e7e6), to(#eee));

background: -webkit-linear-gradient(#e5e7e6, #eee);

background: linear-gradient(#e5e7e6, #eee);

box-shadow:

0 1px 0 rgba(255,255,255,0.5);

-webkit-filter: blur(1px);

-moz-filter: blur(1px);

-ms-filter: blur(1px);

-o-filter: blur(1px);

filter: blur(1px);

}

.switch.demo3 label i {

display: block;

height: 100%;

width: 60%;

border-radius: inherit;

background: silver;

position: absolute;

z-index: 2;

right: 40%;

top: 0;

background: #b2ac9e;

background: -moz-linear-gradient(#f7f2f6, #b2ac9e);

background: -ms-linear-gradient(#f7f2f6, #b2ac9e);

background: -o-linear-gradient(#f7f2f6, #b2ac9e);

background: -webkit-gradient(linear, 0 0, 0 100%, from(#f7f2f6), to(#b2ac9e));

background: -webkit-linear-gradient(#f7f2f6, #b2ac9e);

background: linear-gradient(#f7f2f6, #b2ac9e);

box-shadow:

inset 0 1px 0 white,

0 0 8px rgba(0,0,0,0.3),

0 5px 5px rgba(0,0,0,0.2);

}

.switch.demo3 label i:after {

content: "";

position: absolute;

left: 15%;

top: 25%;

width: 70%;

height: 50%;

background: #d2cbc3;

background: -moz-linear-gradient(#cbc7bc, #d2cbc3);

background: -ms-linear-gradient(#cbc7bc, #d2cbc3);

background: -o-linear-gradient(#cbc7bc, #d2cbc3);

background: -webkit-gradient(linear, 0 0, 0 100%, from(#cbc7bc), to(#d2cbc3));

background: -webkit-linear-gradient(#cbc7bc, #d2cbc3);

background: linear-gradient(#cbc7bc, #d2cbc3);

border-radius: inherit;

}

.switch.demo3 label i:before {

content: "off";

text-transform: uppercase;

font-style: normal;

font-weight: bold;

color: rgba(0,0,0,0.4);

text-shadow: 0 1px 0 #bcb8ae, 0 -1px 0 #97958e;

font-family: Helvetica, Arial, sans-serif;

font-size: 24px;

position: absolute;

top: 50%;

margin-top: -12px;

right: -50%;

}

.switch.demo3 input:checked ~ label {

background: #9abb82;

}

.switch.demo3 input:checked ~ label i {

right: -1%;

}

.switch.demo3 input:checked ~ label i:before {

content: "on";

right: 115%;

color: #82a06a;

text-shadow:

0 1px 0 #afcb9b,

0 -1px 0 #6b8659;

}

/* DEMO 4 */

.switch.demo4 {

width: 150px;

height: 150px;

}

.switch.demo4 label {

border-radius: 50%;

background: #b2ac9e;

background: -moz-linear-gradient(#f7f2f6, #b2ac9e);

background: -ms-linear-gradient(#f7f2f6, #b2ac9e);

background: -o-linear-gradient(#f7f2f6, #b2ac9e);

background: -webkit-gradient(linear, 0 0, 0 100%, from(#f7f2f6), to(#b2ac9e));

background: -webkit-linear-gradient(#f7f2f6, #b2ac9e);

background: linear-gradient(#f7f2f6, #b2ac9e);

position: relative;

color: #a5a39d;

font-size: 70px;

text-align: center;

line-height: 150px;

-webkit-transition: all 0.3s ease-out;

-moz-transition: all 0.3s ease-out;

-ms-transition: all 0.3s ease-out;

-o-transition: all 0.3s ease-out;

transition: all 0.3s ease-out;

text-shadow: 0 2px 1px rgba(0,0,0,0.25);

box-shadow:

inset 0 2px 3px rgba(255,255,255,0.13),

0 5px 8px rgba(0,0,0,0.3),

0 10px 10px 4px rgba(0,0,0,0.3);

z-index: -1;

}

.switch.demo4 label:after {

content: "";

position: absolute;

left: -20px;

right: -20px;

top: -20px;

bottom: -20px;

z-index: -2;

border-radius: inherit;

box-shadow:

inset 0 1px 0 rgba(255,255,255,0.1),

0 1px 2px rgba(0,0,0,0.3),

0 0 10px rgba(0,0,0,0.15);

}

.switch.demo4 label:before {

content: "";

position: absolute;

left: -10px;

right: -10px;

top: -10px;

bottom: -10px;

z-index: -1;

border-radius: inherit;

box-shadow: inset 0 10px 10px rgba(0,0,0,0.13);

-webkit-filter:blur(1px);

-moz-filter:blur(1px);

-ms-filter:blur(1px);

-o-filter:blur(1px);

filter: blur(1px);

}

.switch.demo4 input:checked ~ label {

box-shadow:

inset 0 2px 3px rgba(255,255,255,0.13),

0 5px 8px rgba(0,0,0,0.35),

0 3px 10px 4px rgba(0,0,0,0.2);

color: #9abb82;

}

.switch.demo4 .icon-off:after {

content: "";

display: block;

position: absolute;

width: 70%;

height: 70%;

left: 50%;

top: 50%;

z-index: -1;

margin: -35% 0 0 -35%;

border-radius: 50%;

background: #d2cbc3;

background: -moz-linear-gradient(#cbc7bc, #d2cbc3);

background: -ms-linear-gradient(#cbc7bc, #d2cbc3);

background: -o-linear-gradient(#cbc7bc, #d2cbc3);

background: -webkit-gradient(linear, 0 0, 0 100%, from(#cbc7bc), to(#d2cbc3));

background: -webkit-linear-gradient(#cbc7bc, #d2cbc3);

background: linear-gradient(#cbc7bc, #d2cbc3);

box-shadow:

0 -2px 5px rgba(255,255,255,0.05),

0 2px 5px rgba(255,255,255,0.1);

}

Now let’s come to WeMos code:

//include libraries
#include <ESP8266HTTPClient.h>
#include <ESP8266WiFi.h>
#include <dht.h>
#define dht_apin D4 // Analog Pin sensor is connected to
dht DHT;
float get_temperature,get_humidity; // Setting up variables
int delay_time  = 3000; // Its mean 3 seconds wait to enter first record

//Access point credentials
const char* ssid        = "Password lyna hay";
const char* pwd         = "Google@007";
String get_status_url   = "http://192.168.8.100/device_controll/get_status.php";
String add_data_url     = "http://192.168.8.100/device_controll/add_data.php";
WiFiServer server(80);  // open port 80 for server connection

void setup() 
{
  Serial.begin(115200); //initialise the serial communication
  delay(20);
  WiFi.begin(ssid, pwd);

   
    //starting the server
    server.begin();

}

void loop()
{
    String device_status  = get_device_status("home_sensor");
    delay(2000);
    WiFiClient client = server.available();
    DHT.read11(dht_apin);
    get_temperature =   DHT.temperature;
    get_humidity    =   DHT.humidity;
    
    if(device_status=="1")
    {
     add_device_data(get_temperature, get_humidity);
    }
    else
    {
      Serial.println("Device Status is going OFF");
      }
    
    delay(delay_time);
      
      
}


///This is the function that will get status of device that is On or Off
void add_device_data(float get_temperature, float get_humidity)
  {
    
        WiFiClient client = server.available();

        HTTPClient http;
        String url = add_data_url+"?temp="+get_temperature+"&humidity="+get_humidity;
        http.begin(url);
        //GET method
        int httpCode = http.GET();
        String payload = http.getString();
        Serial.println(url);
        Serial.println(payload);
        http.end();
        
  
  }


String get_device_status(String device_name)
  {
    
        WiFiClient client = server.available();

        HTTPClient http;
        String url = get_status_url+"?device_name="+device_name;
        http.begin(url);
        int httpCode = http.GET();
        String payload = http.getString();
        Serial.println(url);
        Serial.println(payload);
        return payload;
        
  
  }

//include libraries

#include <ESP8266HTTPClient.h>

#include <ESP8266WiFi.h>

#include <dht.h>

#define dht_apin D4 // Analog Pin sensor is connected to

dht DHT;

float get_temperature,get_humidity; // Setting up variables

int delay_time = 3000; // Its mean 3 seconds wait to enter first record

//Access point credentials

const char* ssid = "Password lyna hay";

const char* pwd = "Google@007";

String get_status_url = "http://192.168.8.100/device_controll/get_status.php";

String add_data_url = "http://192.168.8.100/device_controll/add_data.php";

WiFiServer server(80); // open port 80 for server connection

void setup()

{

Serial.begin(115200); //initialise the serial communication

delay(20);

WiFi.begin(ssid, pwd);

//starting the server

server.begin();

}

void loop()

{

String device_status = get_device_status("home_sensor");

delay(2000);

WiFiClient client = server.available();

DHT.read11(dht_apin);

get_temperature = DHT.temperature;

get_humidity = DHT.humidity;

if(device_status=="1")

{

add_device_data(get_temperature, get_humidity);

}

else

{

Serial.println("Device Status is going OFF");

}

delay(delay_time);

}

///This is the function that will get status of device that is On or Off

void add_device_data(float get_temperature, float get_humidity)

{

WiFiClient client = server.available();

HTTPClient http;

String url = add_data_url+"?temp="+get_temperature+"&humidity="+get_humidity;

http.begin(url);

//GET method

int httpCode = http.GET();

String payload = http.getString();

Serial.println(url);

Serial.println(payload);

http.end();

}

String get_device_status(String device_name)

{

WiFiClient client = server.available();

HTTPClient http;

String url = get_status_url+"?device_name="+device_name;

http.begin(url);

int httpCode = http.GET();

String payload = http.getString();

Serial.println(url);

Serial.println(payload);

return payload;

}

Here is little explanation for this code.

First you connect with WiFi then you get sensor data and then you get status of sensor from MySQL via calling URL and then you add this data into Database via calling URL.

Now open serial monitor and upload this code, I assume that you setup Sensor on WeMos like this:

Plus wire into 3 or 5 volt
Minus wire into G
Data wire into D4 or as you wish.

Browse for “status_page.php” to ON or OFF the sensor data. If status is OFF then your data should not be added into database if ON your sensor data should be added into database. Try toggle the button and check both status by watching serial monitor.

I hope you understand what I explained. However, you are free to comment and ask for anything.

Complete source code is here for download.

See you in next tutorial. Happy coding.

About Muhammad Faryad

Muhammad Faryad is a professional web application developer. He has been working for 5 years in ICE786 Technologies Pvt. Ltd as a Senior Programmer and Developer. You can contact him on facebook at www.facebook.com/tolamangali

Who will like these

12 comments

Pavel
March 28, 2018 at 5:14 am

brother, thanks a lot for sharing this code.

Reply
John
July 11, 2018 at 8:45 am

Dear Sir. Really nice tutorial. I am looking how i could alter it to suit my needs. i have a remote site(VPN to that) that i need to have an ESP8266 nodemcu to send me data from:
-3 magnetic door swithes (open/close)
-dht11
then i will have an idea of the temperature/humidity and the status of each door/window.
My network is 192.168.0.0/24. Router is on 192.168.0.1. The Raspberry that has the LAMP server is on 192.168.0.2. The ESP8266 nodemcu will in 192.168.0.3 and the other ESP8266 in 192.168.0.4

Would you be so kind to help me get this working, please?

Reply
boris romero
July 17, 2018 at 8:43 pm

hello, and thank you for the guide.
i tried to implement it but is giving me errors in the arduino code.
i am using wemos mini d1r1 and it says “no matching function for call to ‘dht::dht()'”

Reply
boris romero
July 17, 2018 at 10:54 pm

how can i send at the same time the data to thingspeak? i cant see how to

Reply
mike mendoza
July 22, 2018 at 4:01 pm

hi all im getting omn the serial comm. is this value ?

“localhost/testdht/get_status.php?device_name=home_sensor
Device Status is going OFF”

is there something wrong ?

Reply
tasha
January 23, 2019 at 2:40 pm

Hello..i am so grateful if u can share on how to setup the dht11 and esp8266 based on the scripting u made on wemos or arduino..can u please share it?

Reply
leprom
January 30, 2019 at 1:44 pm

thank you for shared,

Reply
Denis Digula
February 25, 2019 at 9:57 pm

Hi!

First, thanks for sharing.

I have done all as you described, but it cant connect to localhost or something and cant add or get data.

This is error line:

Device Status is going OFF
http://127.0.0.1/device_controll/get_status.php?device_name=home_sensor

I would be grateful if you share sollution for this problem.

Thanks!

Denis

Reply
- Muhammad Faryad
  May 9, 2020 at 8:05 am
  
  I think the device is not connected properly or not configured properly
  
  Reply
Asif Bin Karim
March 18, 2019 at 2:33 pm

please, sir, help me to understand these two lines-

String get_status_url = “http://192.168.8.100/device_controll/get_status.php”;
String add_data_url = “http://192.168.8.100/device_controll/add_data.php”;

here what the IP address meant here? which IP address do you use? Is this IP from ESP8266 or Server IP?

Reply
- Muhammad Faryad
  May 9, 2020 at 8:04 am
  
  This is your device IP that you will access
  
  Reply
Lucas Joseph
March 19, 2019 at 11:15 pm

Dear, I was compiling and presented the following error:

code: 36: 26: error: expected primary-expression before ‘.’ token

get_temperature = DHT.temperature;

^

code: 37: 23: error: expected primary-expression before ‘.’ token

get_humidity = DHT.humidity;

^

would anyone know how to solve ??

The problem is in the functions:

dht.read (dht_pin);
get_temperature = DHT.temperature;
get_humidity = DHT.humidity;

Reply