Hacker “replayreb” recently obtained some IKEA FYRTUR motorized blackout shades, but wasn’t satisfied with the stock remote control that comes with them. Instead he wanted to be able to open and shut the blinds with the same remote that he uses for AV equipment.
Rather than attempting to go through a home automation gateway setup, he simply opened up the remote and wired an Arduino Leonardo to use its GPIO pins as a low-voltage relay. An IR receiver was added to the Arduino, allowing it to take these signals and translate them into simulated button presses as needed.
More info is available in replayreb’s tutorial and you can see it in action in the video below!