Indigo Domotics

Hi forum!

I need help!

I'm trying to build a automation to heat my car during cold winter mornings.
My goals are following:
1. Set independent departure time for every day
2. On/Off (Enable/disable) independent for every day
3. Start the heating depending on outdoor temperature
If the temperature is +10C +5C then the heater need to start 1 hour before departure
If the temperature is +5C +0C then it need to start 2 hour before departure
If the temperature is -0C -10C then it need to start 3 hours before departure
If the temperature is -10 -20 then it need to start 4 hours before
And finally >-20 5 hours before departure

Nr 2 was easy, just create a true/false variable for each day.

Nr 1 I'm not really sure how to solve, I need a function similar to an alarm clock. Where I can set a time easy with up/down arrows for minutes and hours.

Nr 3 is even more tricky. I need to calculate time remaining to departure and depending on temperature start in time. I leave at earliest 05:00 in the morning for work, I guess I can set a count down timer at midnight every night, but I still down know set the departure time in Nr 1.

Some one more cleaver then me or more knowledge in scripting that can give me some help.

Someone beat you to it:

viewtopic.php?f=107&t=14891&p=103986&hilit=Preheat#p103986


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That script solves the basic with preheating depending on departure.
It takes ETD from a variable, if you don't like to modify the script to much u could use a schedule to update the time. Otherwise it won't be independent.
To set time on a control page is above my knowledge, I have tried. Right now I use pop-up on the iPad.


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What about pre cooling


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This morning it was -22C so the option to cool down the car isn't that appealing.
Where I live it's not really a priority any time of the year
But one option would be to roll down the windows with a relay?

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