SmartThings and Air Conditioners?

Haha, it’s true so boring. I only watch half of it.

The only way to connect the Arduino is by ST Arduino Shield.

First, I need to build the Universal Learning Remote on Arduino. Some people has done with this.
After that, attach the ST Shield so it can connect to ST hub

I’m haven’t try it yet, because I don’t have the ST Shield.

This thread is helpful for Arduino project

what happen with Harmony integration ?