[bobf]

Unless you really want to dive into building it for fun, check out the Sensibo Sky. If your unit is compatible, I think that's the way to go. I honestly think they're slightly overpriced for what they are, even on sale, but I've also bought 4 and have been very happy.

Basically you get all the control/features you want by app or API, based on the unit's thermostat and hygrometer. Remote control, scheduling, auto on/off based on your location if you want that, and the big thing for me: programmable event control with any settings (cool/dry/fan at X degrees and Y strength/angle).

I mostly use the temperature based on/off programability because that feels the most like a traditional central air to me. I usually do: "when temperature is >24C, turn unit on to cool 20C medium fan strength" and "when temperature is <23C, turn unit off".

[p1mrx]

How does Sensibo handle the state synchronization problem? I would happily pay for something that works, but throwing state-dependent IR codes into the void is a recipe for pain.