DomoticHome
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This software is distributed under creative commons license http://creativecommons.org/licenses/by-nc-nd/2.0/it/deed.en_US Author: Mattia Lipreri - [email protected]
I created this project and my target is improve the comfort of my home.
Taking a look around I noticed that home automation solution proposed by
the big market player are too much expensive for me and, above all, I
should create new wires connections between light, plug, etc.. and the
control box. My idea is use what we already have without spend lot of money to buy a
owner solution, so I started with arduino, my android mobile phone, some
relays and my home. I have a nice home, 2 bad rooms, kitchen with living room and it was very
nice tka e the control of the lights, gate and door with my mobile phone.
Let's start to play. I used an Arduino 2009 with ethernet shield and the game is very easy, I
send some http message to arduino, he moves some relays and give me back
a JSON response. Not so hard, but the hard business is interfacing with
the electrical wiring of home, with some patience I found what I need and
I linked those wires at the relays.
Go deeper. Let's analyze a bit what my mobile send to arduino, the actors in this
scenario are:
AS = Arduino Station (arduino 2009/Mega + ethernet shield with relays
linked to arduin digital out)
M = Master (android app)
Sync Mobile - Arduino
You have to configure the ip of your arduino on the app, in this way when
you perform a sync the mobile will send to arduino this:
http://arduinoip/?m=hello
and arduini will reply with this json message:
{"ip" : "arduinoip", "devices" : [" + "{ "type" : "gate", "name" :
"cancellino ingresso", "out" : "5"}, {"type" : "door", "name" : "porta
ingresso", "out" : "4"}, {"type" : "light", "name" : "luce soggiorno",
"out" : "6"}, {"type" : "light", "name" : "luce cucina", "out" : "7"},
{"type" : "temperature", "name" : "camera da letto", "out" : "0"},
{"type" : "temperature", "name" : "camera bimbi", "out" : "9"}, {"type" :
"wattmeter", "name" : "consumo energetico casa", "out" : "10"}]}
so we know what sensor/realys are linked to arduino and what they are
used for.
Take a closer look at this message:
ip is the arduino ip out is the arduino pin where the relay/sensor is linked name a human identifier type object type
Right now there are the following type available:
plug light door gate temperature humidity wattmeter
The type temperature, humidity, wattmeter can't be controlled because
they are sensons, the app has a background job that retrieve this value
and store into a database, in the future we could make graph or use this
data for statistical consideration.
Now the app is in sync with arduino!
Put something on/off
We just have to call to turn something on:
http://arduinoip/?out=1&status=1
status can be 1(on) or 0(off) out point at the arduino pin
our arduino will give back this JSON massage if the transaction succeed:
{"out": "4", "status" , "1"}
What can we do with the andriod app:
- sync the app with arduino
- turn something on/off
- create custom action (turn light on and then open the gate)
Items used:
1 Arduino 2009 1 Ethernet shield 1 Relay with driver 1 power pack 1 electrical stuff 1 Pannello di plexiglas Total in euro: 70
What I control:
- living light
- home gate
- front door
- check living room temperature
What I like to do in the future:
- integrate my irrigation system
- trigger an action at a specified time (need to work on android app)
- link another arduino and handle it with the app
- when the software will work fine give the code at the community
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