The first examle to introduce RobotPlace HTTP communication from Web Interfaces.
This code is the simplest way to switch ON/OFF a LED or a Relay on the Arduino.
View more description:
here:http://www.robotplace.com/example/arduino-led-http-simpliest-letter/
Use this URL when outside home network:
(use RobotPlace's Proxy)
http://yourWANIP:50184/a to turn the LED ON
http://yourWANIP:50184/s to turn the LED OFF
You MUST setup correct Port forwarding on your router according to the Arduino's IP and Port.