I already wrote my first Arduino program. It’s really simple but fun

What it does is that every time somebody visits my website, a LED light blinks once in my room, and I get a warm feeling of a visitor

How to do that:

• Burn this code to your Arduino.
• Connect a LED light to pin 12 and ground it.
• Connect your Arduino to your web server through USB.
• Log in to your web server and type: “sudo chmod 666 /dev/ttyUSB0″.
• Add this PHP code to your website header.
• Enjoy!

In case this doesn’t work; try to solve your problem or comment this article and I will try to help you.