cristi, your using this separate thread to work thru your project & questions will work well. No problems created.
"I started to built up an interface that can be access through an internal network. Here I want all sensor readings to be shown and also to be able to interact with different things."
papa: As you may have seen, in this forum we use (open source) OpenHAB software for this.
papa: Below for different parts of your plan, I categorize what is available so far on this forum. I pointed out one place to begin & if needed, can help you with the other locations.
For the following in your plan, detailed forum posts exist:
- temperature and humidity sensors in all rooms
You might
work thru this thread to
get your feet wet & create a temp / humidity sensor node that has the start of controlling lights
- automatic control of lights
- windows and doors open/close detection
This forum probably has the pieces to adapt for:
- movement sensors for light on the stairs
- bathrooms and kitchen water leak sensors
Sensor approaches from the Uber Home Automation instructable might be adapted into this forum's current approach:
- each house level CO and smoke sensors
- technical space, kitchen and fireplace fire sensors
- bathrooms and kitchen water leak sensors
I believe forum members have reported efforts & can perhaps help with:
- automatic control of the blinds
- each house level CO and smoke sensors
- technical space, kitchen and fireplace fire sensors
This may take a ready made commercial product that is compatible with the OpenHAB controlling software:
- automatic control of the ventilation, air conditioning and heat
"Now I am trying to wrap my head around gateway and gateway and nodes."
papa: You might enlarge & study the diagram I did
for this post to get an overview of how our forum approach ties things together.