I want to control my remote controllable skylights with my Raspberry Pi. The windows were installed a few years back and come already with the remote capable io-homecontrol technology, which comes with remotes that can each control one window. Going forward into 2017 I want to interface those devices with a more central system. My goal is to control it via Raspberry Pi.
Unfortunately io-homecontrol is a multi-vendor system that's poorly documented for outsiders. I've found an old blog that details how to make it work by physically connecting the GPIO of the Raspberry Pi to the dissected remote of the skylight. I would very much prefer to forgo so many relays and cracked open remotes.
How do I control io-homecontrol devices via Raspberry Pi without physically attaching the PCB of the remote to it?