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Topic: controlling hydro, heat via android and physical switch (Read 1 time) previous topic - next topic


Mar 31, 2012, 07:14 pm Last Edit: Apr 01, 2012, 03:30 pm by bertnic Reason: 1
Hello everybody, I need your help... I need/want to start this domotic project for my house in the mountains.
In the attached file you can see a very high level schematic of my home control system.
In this cottage there are two apartments. There are plenty of things to do when leaving home since it's bitter cold there in winter and the hydro plant can freeze. Moreover I have several heat sources (wood, GPL, solar etc.).
So I need to actuate some electro-valves to drain the pipings amd cotrol the many heating sources by mean of temperature sensors and pumps.
The logic is pretty complex but it's out of scope of this post.
The users will open each apartment or close it for winter by means of two switches (and a led to see if it's on or off), one for each apartment or by means of an android phone with a GUI replica of the two above mentioned physical switches.
I'm counting 9 temperature sensors, at least 14 relays to control valves and pumps, two switches and two leds.
Now I need all the help I can get from you.
Which tempaerature sensors are best fit for the pipings or for air tempaerature?
How would you design the board, is there any relays board with that many switches? Is the Mega 2560 the right choice? I want to control it via internet which is always on, so I added an ethernet shield.
Hints and links to similar projects or tutorials?
in the future I may add a couple of ip webcams and other relays, so I need some extra space and contacts
I'll build a buying list with your help and post it here for your approval, I don't want to waste money with things I'm not going to use or not buying necessary things.
Thank you in advance


Mar 31, 2012, 07:49 pm Last Edit: Apr 01, 2012, 11:30 am by bertnic Reason: 1
And this is my shopping cart so far

1x  - Arduino Mega 2560 Rev3
A000067      47,19 €   
1x  - Arduino ETH Shield Rev3 WITHOUT PoE Module
A000072      35,09 €   
1x  - External Temperature Sensor - Gewiss GW30703

2x  - Temperature sensor with control - Gewiss GW21852
1x  - Breadboard with Wire Kit
A000032      12,10 €   
1x  - Power Supply 12VDC 2.0A - EU
PHI 3023_1      15,73 €   
2x  - Digital Push Button
DFR0029      4,20 €   - 8,40 €
1x  - Relay Board (16 relay)
DFR0144      62 $
OPLEDS05PSM      2,42 € - 4,84 €
2x  - LED 5mm. ROSSO
OPLED05REC      0,36 € - 0,72 €

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