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[on:]

Hi,
I build an thermostat to control my home heating system. It's made with an arduino, an ethernet shield and an 2 chanel relay. I also made an android app to control the thermostat.
In the picture the button text is in dutch but in the uploaded version the text is in english.
In the arduino sketch there is some documentation how to connect to your heating system.
I hope to get some sugestions to improve this project.
Arduino sketch
Android app
Video
 

Links to the used library's:

EEPROMEX

DHT

[Reply #1 on:]

nice,tried but hit check and get errors

[Reply #2 on:]

What kind of errors?  Is it on your phone or on the arduino?

[Reply #3 on:]

error: 'DHT' does not name a type

[Reply #4 on:]

You dont have the DHT files in you arduino/libraries folder. you can download it here:
https://github.com/adafruit/DHT-sensor-library
instructions are in the readme.txt

[Reply #5 on:]

It would be nice to have a schematic of your arduino.
Not everyone knows how to build your idea.

And do you have the Dutch version on-line as well?

[Reply #6 on:]

I quickly made some schematics. see he first post.
You like the app with dutch text labels? For now its not online, perhaps a future version is multi langual. If i have time i send you a previous version in dutch or you can use my other app that suports custom text labels and has nearly the same funcionality.
http://arduino.cc/forum/index.php/topic,127770.0.html

[Reply #7 on:]

Hi,
Seems to be a nice project....

i am trying to test it but I received a lot of errors...
----------------
sketch_oct31a.cpp:24:22: error: EEPROMex.h: No such file or directory
sketch_oct31a.cpp:25:20: error: Avviso.h: No such file or directory
sketch_oct31a.cpp: In function 'void setup()':
sketch_oct31a:141: error: 'EEPROM' was not declared in this scope
sketch_oct31a.cpp: In function 'void loop()':
sketch_oct31a:280: error: 'EEPROM' was not declared in this scope
sketch_oct31a.cpp: In function 'void action(int, EthernetClient)':
sketch_oct31a:422: error: 'EEPROM' was not declared in this scope
sketch_oct31a:459: error: 'EEPROM' was not declared in this scope
-----------------
Where can I find the above libraries? Please help

Thanks a lot,

[Reply #8 on:]

the EEPROMex library with thanks to mrTeehttp://arduino.cc/forum/index.php?topic=115587.0

You can delete the line  #include <Avviso.h>
This an libray to send notifications to you phone. I commented out the code it uses but i forgot to remove the include line in the uploaded version. It has some nice function but i removed it because it needs a subscrision to "prowl" or "notifier my android" and because the sketch became to big to fit an arduino uno. More info can be found here: https://github.com/colagrosso/avviso. Whenever i recieve my mega (china post  ) i wil us it to let the arduino send a notification when the temperature in my house gets to hot and i can decide to open some windows remotely or close the shutters when its freezing outside.

[Reply #9 on:]

Looks an interesting project. Do you have schematics?

[Reply #10 on:]

I think I've found the pieces I ws looking for on other projects.

[Reply #11 on:]

Nice - thanks for sharing
what exactly do the relays hook up to and what do they do?
This could be different for a lot of heating systems, and it is the core of your whole idea.

[Reply #12 on:]

This looks great, can't wait to try it out!

I'm confused about the relays though, which one does what? I would only need one relay for my boiler?

thanks

[Reply #13 on:]

testing now, but LCD screen is stuck on 'Getting IP'. I have assigned it the same IP that I use in other sketches and same mac address.

With the serial debugging I can see that is also stuck on Getting IP

have you seen this before? I have installed the DHT AND EEEPROM libs, I'm running bare bones with no temp sensors connected but don't think that is the problem?

[Reply #14 on:]

Nice - thanks for sharing
what exactly do the relays hook up to and what do they do?
This could be different for a lot of heating systems, and it is the core of your whole idea.

With one relay you can switch between your current thermostat and the arduino thermostat.

The second thermostat turns on / off your heating system the same way your current thermostat does.

I uploaded some simple schematict in the opening post.