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You are here:Home » Arduino WiFi Control of LED From Web Browser

By Abhishek Ghosh April 19, 2018 5:53 pm Updated on April 19, 2018

Arduino WiFi Control of LED From Web Browser

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Previously, we discussed about ESP8266. Working With ESP8266 Not Exactly Just Easy. Here is Circuit Diagram, Code to Setup Arduino WiFi Control of LED From Web Browser to Help New Users. We searched the whole web as much possible to find easiest tutorial which a newbie can follow. Basically, ESP8266 as one component involves complex networking matters. There are development boards for IoT, which are easier for anyone to create things. Connecting ESP8266 with Arduino needs lot of research for your particular model, version. This guide is basic IoT setup.

 

Arduino WiFi Control of LED From Web Browser

 

ESP8266 is a serial WiFi module capable of sending and receiving data from the Web over the internet. It is probably better if you setup ESP8266 with Arduino following just basic guide on official Arduino’s site than ours this one for first attempt.

You will need :

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  1. Arduino development board
  2. ESP8266

  3. 3 LEDs

  4. 3 resistors – 1K or 2K
  5. Jumpers or some wires
  6. Breadboard
  7. Computer with WiFi
  8. The HTML webpage (free) we are providing

After copying the below code to Arduino IDE, compile and upload to the UNO. Then run serial monitor. Make sure you have test the NL and CR option and as well as right baud rate on serial monitor on the IDE.

The wiring part is not super difficult :

Arduino-WiFi-Control-of-LED-From-Web-Browser

Here is the HTML page with jQuery to get buttons on web page :

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https://github.com/elementzonline/Arduino-Sample-Codes/tree/master/IOT_Kit/iot_control_pins

Here is the code :

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#include <SoftwareSerial.h>
#define DEBUG true
SoftwareSerial esp8266(10,11); // make RX Arduino line is pin 10, make TX Arduino line is pin 11.
// This means that you need to connect the TX line from the esp to the Arduino's pin 2
// and the RX line from the esp to the Arduino's pin 3
void setup()
{
Serial.begin(9600);
esp8266.begin(9600); // your esp's baud rate might be different
pinMode(2,OUTPUT);
digitalWrite(2,LOW);
pinMode(3,OUTPUT);
digitalWrite(3,LOW);
pinMode(4,OUTPUT);
digitalWrite(4,LOW);
sendData("AT+RST\r\n",2000,DEBUG); // reset module
sendData("AT+CWMODE=2\r\n",1000,DEBUG); // configure as access point
sendData("AT+CIFSR\r\n",1000,DEBUG); // get ip address
sendData("AT+CIPMUX=1\r\n",1000,DEBUG); // configure for multiple connections
sendData("AT+CIPSERVER=1,80\r\n",1000,DEBUG); // turn on server on port 80
}
void loop()
{
if(esp8266.available()) // check if the esp is sending a message
{
if(esp8266.find("+IPD,"))
{
Serial.println("listening");
delay(1000); // wait for the serial buffer to fill up (read all the serial data)
// get the connection id so that we can then disconnect
int connectionId = esp8266.read()-48; // subtract 48 because the read() function returns
// the ASCII decimal value and 0 (the first decimal number) starts at 48
esp8266.find("pin="); // advance cursor to "pin="
int pinNumber = (esp8266.read()-48)*10; // get first number i.e. if the pin 13 then the 1st number is 1, then multiply to get 10
pinNumber += (esp8266.read()-48); // get second number, i.e. if the pin number is 13 then the 2nd number is 3, then add to the first number
digitalWrite(pinNumber, !digitalRead(pinNumber)); // toggle pin
// make close command
String closeCommand = "AT+CIPCLOSE=";
closeCommand+=connectionId; // append connection id
closeCommand+="\r\n";
sendData(closeCommand,1000,DEBUG); // close connection
}
}
}
/*
* Name: sendData
* Description: Function used to send data to ESP8266.
* Params: command - the data/command to send; timeout - the time to wait for a response; debug - print to Serial window?(true = yes, false = no)
* Returns: The response from the esp8266 (if there is a reponse)
*/
String sendData(String command, const int timeout, boolean debug)
{
String response = "";
esp8266.print(command); // send the read character to the esp8266
long int time = millis();
while( (time+timeout) > millis())
{
while(esp8266.available())
{
// The esp has data so display its output to the serial window
char c = esp8266.read(); // read the next character.
response+=c;
}
}
if(debug)
{
Serial.print(response);
}
return response;
}

Tagged With arduino wifi control , Arduino ESP8266 module as web brouser offline , arduino ethernet shield webserver LED , control led esp8266 webbrowser , esp8266 arduino led control , wifi internet led advertising display
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Abhishek Ghosh

About Abhishek Ghosh

Abhishek Ghosh is a Businessman, Surgeon, Author and Blogger. You can keep touch with him on Twitter - @AbhishekCTRL.

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