Infrared LEDs and receivers can be a great way to control a robot will create a home automation system but you need a library to simplify the coding process. In this tutorial we will give a brief explanation of how IR remotes work and show you how to use the IRLib library which makes it easy to send, receive, and decode IR signals.
The AR1100 is a nice chip that acts as a touch->USB converter and also comes with calibration software. The calibration software is Windows only, but once you've calibrated you can use the screen on any OS. The AR1100 shows up as a regular Mouse or Digitizer HID device so no drivers are required and it works on any operating system that supports a USB mouse (that is, every single one we've ever seen) There is also a red LED that lights up to indicate when a touch has been detected.