In general, the task that stands before me is described in the title, now I will describe how I see the process:
1. Computer - at the moment normal, ideally Arduino.
2. Electrovalve (for turning off / on the water supply)
3. Power glass (for opening the windows of the greenhouse), I think to take a simple car.
4. Battery - I don’t know what to take under this case at all, I don’t know if the car is suitable.
5. Somehow insert a gsm module into this case (3g modem as an option).
Well, in general, that's all, that is, the scheme of work sent SMS with one code, water flowed, stopped with another, etc. Then it will be possible to stick temperature sensors and similar prikolyukhs! But I would like to get info from experienced people, how to organize all this. Thank you in advance!