The Arduino IRremote library lets you control your Arduino through a standard infrared remote control, or use your Arduino to control other devices (TV, stereo, etc).

To download and install, go to the Arduino-IRremote github page.

This wiki has documentation (under development):

• Hardware setup
• Sending with the IRremote library
• IRremote library API
• Receiving with the IRremote library
• IRremote projects
• Types of IR codes
• The internals
• Troubleshooting

For more details, see the blog post A Multi-Protocol Infrared Remote Library for the Arduino