ESP 8266 Wifi Controlled Home Automation





Introduction: ESP 8266 Wifi Controlled Home Automation

About: So basically i am a crazy person, who loves to think the most odd way ever possible,who makes what he thinks and also let other also make those . Check out my crazy projects if you like do follow me :D

ESP8266 is a great thing for starting to Wifi And IOT

It is also cheap and be used for making cool projects connected to the Internet .Learn how to make a simple IOT Project with it .The ESP8266 WiFi Module is a self contained SOC with integrated TCP/IP protocol stack that can give any microcontroller access to your WiFi network. The ESP8266 is capable of either hosting an application or offloading all Wi-Fi networking functions from another application processor. Each ESP8266 module comes pre-programmed with an AT command set firmware, meaning, you can simply hook this up to your Arduino device and get about as much WiFi-ability as a WiFi Shield offers (and that’s just out of the box)! The ESP8266 module is an extremely cost effective board with a huge, and ever growing, community.

Update : I made a iot home control box to control home appliances

Step 1: Components and Connection

Thing we will need

ESP8266 Pinouts

Vcc -power supply 3.3 v

Gnd - Ground

RST- reset

CH-PD-Chip power Down- Connected to 3.3V


Tx - Transmit

GPIO 0- Normal mode for HIGH Programming Mode for LOW

GPIO 2 General purpose 2

Step 2: Making the Esp 8266 Bread Board Friendly

Esp 8266 esp 1 is badly famous for being rude to the Bread board .

Here is a small hack to make it convert into a DIP pack.

You only want a 4x 4holes perf section with 4 rows of copper track of length four holes.

see the photos and you'd understand what I mean by that.

Cut two Strips of 4 Male Header pins each.

Cut two Strips of 4 Female Header pins each.

Push the 4-Pin Female header pins

Solder the Female Header (4-Pins each)

Push the 4 pin male all the way down until they are invisible in one side of the plastic frame.

Solder the male Header (4-Pins each) and join female together with it


Vcc and ch_pd to vcc

Gnd to gnd

Rst to button 1

GPIO0 to button 2

Note While uploading Program press reset once while holding GPIO Button as long as the program uploads

Step 3: Setting Up the Arduino Environment

You need to download the core if your Arduino is below 1.6

Installing with Boards Manager for Arduino

Starting with 1.6.4, Arduino allows installation of third-party platform packages using Boards Manager. We have packages available for Windows, Mac OS, and Linux (32 and 64 bit).

  • Install Arduino 1.6.8 from the Arduino website.Start Arduino and open Preferences window.
  • Enter into Additional Board Manager URLs field.
  • You can add multiple URLs, separating them with commas.
  • Open Boards Manager from Tools > Board menu and install esp8266 platform (and don't forget to select your ESP8266 board from Tools > Board menu after installation).

Boards manager link:

Step 4: Trying the Blink Sketch


The led is connected to the GPIO 2

Tx is connected to Rx

Rx is connected to Tx

Vcc to 3.3v

gnd to gnd

Ch_pd to 3.3v

GPIO 0 to gnd while programing

int ledPin=2;

void setup() {
pinMode(ledPin, OUTPUT);

void loop() {
digitalWrite(ledPin, HIGH); // turn the LED on (HIGH is the voltage level)
delay(1000); // wait for a second
digitalWrite(ledPin, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second

Step 5: Making a Web Controlled Home Automation


The led is connected to the GPIO 2

Tx is connected to Rx
Rx is connected to Tx

Vcc to 3.3v gnd to gnd

Ch_pd to 3.3v

GPIO 0 to gnd while programing

<p>#include <ESP8266WiFi.h><br></p><p>const char* ssid = "dlink";
const char* password = "ilovechips";</p><p>int ledPin = 2; // GPIO2
WiFiServer server(80);</p><p>void setup() {
delay(10);</p><p>pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, LOW);</p><p>// Connect to WiFi network
Serial.print("Connecting to ");
Serial.println(ssid);</p><p>WiFi.begin(ssid, password);</p><p>while (WiFi.status() != WL_CONNECTED) {
Serial.println("WiFi connected");</p><p>// Start the server
Serial.println("Server started");</p><p>// Print the IP address
Serial.print("Use this URL to connect: ");
Serial.println("/");</p><p>}</p><p>void loop() {
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
}</p><p>// Wait until the client sends some data
Serial.println("new client");
}</p><p>// Read the first line of the request
String request = client.readStringUntil('\r');
client.flush();</p><p>// Match the request</p><p>int value = LOW;
if (request.indexOf("/LED=ON") != -1) {
digitalWrite(ledPin, HIGH);
value = HIGH;
if (request.indexOf("/LED=OFF") != -1) {
digitalWrite(ledPin, LOW);
value = LOW;
}</p><p>// Set ledPin according to the request
//digitalWrite(ledPin, value);</p><p>// Return the response
client.println("HTTP/1.1 200 OK");
client.println("Content-Type: text/html");
client.println(""); // do not forget this one
");</p><p>client.print("Led pin is now: ");</p><p>if(value == HIGH) {
} else {
client.println("Click <a>here</a> turn the LED on pin 2 ON<br>");
client.println("Click <a>here</a> turn the LED on pin 2 OFF<br>");
Serial.println("Client disonnected");



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31 Discussions

Hi Sir,

I made the same project. It works fine but there is one issue. Communication of webpage with esp8266 goes off randomly and I need to push reset button for esp to make that connection again and then it works fine again for some random period of time. My router is working properly and everything is as per you mentioned in this page.

Please help me how to get rif of this issue.



the code supplied is not compiling.what can be done regarding this?


Aoa sir my project is remote control of home appliance with arduino through webpage for interfacing arduino with webpage i am using esp8266 esp project i am using master slave technique ...which means webpage will interface with master arduino through esp8266 then that master arduino will send signal to slave arduino through rf module ..and this slave will now light up the main issue is i have made webpage communication between master slave has been done ...but interfacing of arduino with webpage is making problem code is correct connections are correct but the code is not burning in wifi module it is giving error "
Error : failed to open com6
Error: espcom_open failed
Error: espcom_upload_mem failed "
Do you have some idea about it ?
Moreover sir i wana ask we have to remove arduino chip when we are buring code in esp8266 ?
Or we have to write the code in the same arduino file which we have developed while communication between master and slave ?

1 reply

When you connect your esp to computer, go to Tools>Ports and change port from COM1 to available ports like COM4 or COM7

How did you program esp01??.. Please explain.. thank you!!


im occuring a problem with my arduino board... while im connecting my arduino uno board to my laptop the port is availablein IDE.. but whenever i connect esp8266 to my arduino uno.. the port is getting unavailable.. by clicking the serial monitor im getting '' Board at COM4 is not available ''.

so how can i clear this problem.. plss help me...

Thanks for this, but it's a breadboard implementation. Are you able to take it into the real world? I guess you need to squeeze it into a housing with a battery of some type? After that step it's a killer project.

2 replies

I kept it for appetizer :P
Comming soon

warning: espcomm_sync failed

error: espcomm_open failed
error: espcomm_upload_mem failed

I am continuously receiving this error. Please help me finding the solution. Connection and everything seems fine but whenever i upload the code, it gives error.

I am using esp-01 with arduino mega2560. i've also tried PL2303 but got the same error. Waiting for your reply. Thank you

3 replies

You need to make EN pin high by shorting it to 3V3 pin and short the IO0 to GND. After that you need to upload the NodeMCU firmware on the module. You can find the same on GITHUB :

After this process this error on your arduino IDE will be solved.

I am also getting same error .Did you get how to solve it.

Hi Mubashir,

I just resolved the same problem just yesterday night.

You need to pull down the REST pin of your ESP while you see 'Uploading' on Arduino IDE, then quickly you must pull up the REST pin and leave it as it is. Using a 10K resistor is the good way to do so.

I highly recommend the schematics in here:

Since my FTDI didn't have RTS pin, I had to do Reseting (REST) of ESP manually...

my arduino is unable to compile the above code,if i erase all those '<p>' then only it is able to compile, but if i do so i am not getting the button in the web page

ESP8266 is amazing! Especially the new ESP8266-12e, which packs I/O thus rendering arduino not necessary.

I made a Smarthome setup from these chips: - see demo video here. It packs IFTTT , Siri integration, lights control, power switches and much more. Everything open source

Have u tried the relay module on inductive load? Any obsurd resets by esp-01?

Can you please post a proper circuit drawing as the above drawing does not make sense. there appears to be connections missing


2 replies

I agree. The circuit diagram appears a bit faulty, and photos don't help to understand the connections, a circuit scheme is really appreciated/needed!