Hi, I have been testing openhab some time and now I would like to buy the hardware to place it in to my house.
I have put motors to roller shutters and I have centralized all the cables in one point, also I would put a relay in to the heater with a temperature sensor inside and other outside. Finally I would make some dimers to a 12v lights with TIPS 120.
The main doubts are two.
I would put the server in a raspberry Pi3 but I have doubts to buy an arduinoMega to controller the sensors, tips and relay, and the connected to the raspberry Pi by Serial port or MQTT or just do all of this with the raspberry GPIO (then I would have to buy an extension of GPIO).
Other doubt is which relays I am going to use. To act to the heater and some light I would use the typical ones that can hold “10 A” but I am things to use a bigger relays (about 30A ) in the motors.
Which are your proposes.