What would make a relay even better? How about controlling a relay over the internet from anywhere in the world? Yea!
This process is made really simple using the Teleduino sketch for your ethernet enabled Arduino. Haven't heard of Teleduino? That's cool, you may want to take a look at Arduino Control via a Web Service with Teleduino to get yourself started.
This tutorial will guide you through the process of attaching a 5V relay to your Arduino, and provide some example Teleduino API calls to:
- Define the pin mode of a pin
- Turn on the relay
- Turn off the relay
- Toggle the relay
Let's get started!