Arduino Internet Controlled Desk Lamp

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1 Summary of Arduino Internet Controlled Desk Lamp

3 Step 2: Upload your code to the arduino

Summary of Arduino Internet Controlled Desk Lamp

This project demonstrates how to control an Arduino-connected relay via a Linux web server using PHP. The Arduino reads serial commands ('1' or '0') to switch a relay on or off, controlling a light bulb. The relay is driven through a transistor connected to pin 13. A PHP script communicates with the Arduino over a specified serial device. Uploading the Arduino code and PHP files to the server enables internet-based control of a desk lamp.

Parts used in the Arduino Internet Controlled Desk Lamp:

Arduino
Relay
Transistor
Light bulb
Linux web-server with PHP
Connection cables

Step 1: What You’ll need

A linux web-server with PHP, an arduino, a relay and some other components.

Step 2: Upload your code to the arduino

Upload the following code to your arduino:

void setup(){
Serial.begin(9600);
}
void loop()
{
if (Serial.available() > 0) {
char inByte = Serial.read();
if(inByte == ‘1’){
digitalWrite(13,HIGH);
}
else if(inByte == ‘0’){
digitalWrite(13,LOW);
}
}
}

SerialOnOff.ino250 bytes

Step 3: The circuit

Connect everything as shown in the image.
Connect the base of the transistor to the pin used in the code I used pin 13Connect your light bulb in series with switching contacts of the relay.And connect your arduino to your server.

Step 4: The webpage

php_serial.class.php = Serial libraryexample.php = The code
make sure you put the path of your arduino on the following line:
$serial->deviceSet(“/dev/ttyUSB0”);Upload this two files to your server in the same directory.