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15-07-2011, 10:51 PM #1
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DIY cell phone remote control for Mitsi MSZ-FD25
Just got this snake box up and running
. Cell phone with auto answer connected to electronics that reads DTMF tones (buttons being pressed at other end) ja sends control commands to heat pump.
Just a basic setup: Power on/off. Mode heating/auto/cooling. Temperature 16-31. Everything else is static at the moment but there seems to be plenty of free code space left in electronics to develop more controls.
Cell phone keymap of control:
1: Power ON
4: Power OFF
2: Mode->Heating
5: Mode->Auto
8: Mode->Cooling
3: +1C temp
6: +22C fixed
9: -1C temp
*: Excecute command (=send to heat pump)
Example if you want device on to heating mode and temperature set to 24C -> Call to GSM control and wait for it answer to your call. Then press 1-2-6-3-3.
It you then suddenly decide to cool room down to 21C, just press 8-9-9-9-* (or 8-6-9-*).
First impression this setup was so good that I think I have to get a nicer plastic enclosure for this puppy and let it run for ever...
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15-07-2011, 11:45 PM #2
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Re: DIY cell phone remote control for Mitsi MSZ-FD25
im impressed- could it be made smaller?
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16-07-2011, 07:43 AM #3
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Re: DIY cell phone remote control for Mitsi MSZ-FD25
I believe size could be reduzed to 1/4 of current setup. Shorter and better organized wires, smaller speaker, etc...
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17-07-2011, 07:52 PM #4
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Re: DIY cell phone remote control for Mitsi MSZ-FD25
Schematic and Arduino code attached. This thing also tends to make you lazy
. Controlling pump from bed, livingroom... 
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17-07-2011, 08:01 PM #5
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Re: DIY cell phone remote control for Mitsi MSZ-FD25
Wow, looks good, well done.
Chillin
IF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
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12-08-2011, 10:14 AM #6
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Re: DIY cell phone remote control for Mitsi MSZ-FD25
Only with nokia 1112? or any other options beside Nokia 1112?
Idea price? One indoor one SIM card to host?
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24-09-2011, 09:50 PM #7
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Re: DIY cell phone remote control for Mitsi MSZ-FD25
U can use any cell phone that has auto answer ability.
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02-10-2011, 07:59 PM #8
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Re: DIY cell phone remote control for Mitsi MSZ-FD25
very nice, pity i could not open the " pde" file to check wat was in there.
did you work whit pcb's from a Mitsu indoor unit?
Ice
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04-10-2011, 08:46 PM #9
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Re: DIY cell phone remote control for Mitsi MSZ-FD25
It is file format used by Arduino Software. Actually plain text so it can be renamed to .txt and open in any text editor.
Originally Posted by icecube51
No, did not touch any pcb. Originally Posted by icecube51
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22-10-2011, 09:06 AM #10
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Re: DIY cell phone remote control for Mitsi MSZ-FD25
wow thats awesome....
i wonder what sort of similiar electronics there is out there to hook up to say a daikin?
