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Community => Exhibition / Gallery => Topic started by: MuttDriver on Feb 22, 2015, 11:44 pm

Title: SMS remote for car heater with extras
Post by: MuttDriver on Feb 22, 2015, 11:44 pm
Finally I finished my first Arduino project: A SMS remote for controlling my cars Webasto petrol heater. While I was at it, I added some extras: GPS, Temperature, Humidity, Volt-meter.

I can turn on/off heater, set desired heater-time, set desired cabin temperature, turn on/off extra relay,  check temperature/humidity, check battery voltage, check GPS location and speed of car. All by SMS

I used:
Arduino Uno,
DHT22
2 channel isolated relay board
GSM module http://www.elecfreaks.com/store/gprsgsm-moduleefcom-pro-efcompro-p-450.html (http://www.elecfreaks.com/store/gprsgsm-moduleefcom-pro-efcompro-p-450.html),
Skylab GPS http://www.ebay.co.uk/itm/Skylab-GPS-Module-MT3329-SKM53-with-Embedded-GPS-Antenna-Arduino-Compatible-l-/301366918787?pt=LH_DefaultDomain_3&hash=item462ade3e83 (http://"http://\"http://www.ebay.co.uk/itm/Skylab-GPS-Module-MT3329-SKM53-with-Embedded-GPS-Antenna-Arduino-Compatible-l-/301366918787?pt=LH_DefaultDomain_3&hash=item462ade3e83"")
Total spent was about 80$

I mounted it all inside an old car stereo, as I had an extra ISO slot in my car. It was easy to wire to my heater, it just needs a positive on a single wire to turn on. Other heaters probably needs a CAN-BUS signal, or the original on/off button can probably be hacked

More details in ino file.

[EDIT] ino file removed. See post below with fixes and updated sketch.
Title: Re: SMS remote for car heater with extras
Post by: MuttDriver on Mar 18, 2015, 01:16 pm
I've made some fixes and improvements.


Most string variables are moved to PROGMEM. 
 
Added a routine to check if GSM is connected to network, and act accordingly. 
 
Added functions to set the low battery and empty battery threshold by SMS. 
 
"Speed" is now working. 
 
Added a "GPS virtual fence", which can be set by SMS to 1-99999 meters. 
 
I've split the sketch into several tabs for clarity, that's why the attached file is .zip
Title: Re: SMS remote for car heater with extras
Post by: Fork501 on Mar 18, 2015, 07:35 pm
Awesome!  Do you have any videos?  (Shot safely, while not driving, of course haha)
Title: Re: SMS remote for car heater with extras
Post by: MuttDriver on Mar 19, 2015, 12:39 am
Sorry, I haven't got a video. It would a little boring anyways, there are no moving parts, just a blinking light, some text messages, and the sound of a heater  ;)
Title: Re: SMS remote for car heater with extras
Post by: CsepregiArtur on Nov 02, 2019, 09:44 pm
Hello

Some updates? I woud like to adapt to work with original webasto termocal app, but im wondering the actual program what youmade is working fine?