Preheat automation upgrade.

I made an update for the heater automation box. Sadly no schedulin yet. But oled display and better refhresh free UI.

Also UI looks now bit different. Don't know if it's better or worse for usability?

Dropdown listbox and two buttons. Listbox always defaults on 2H which is the most used option.

Car preheating automation with ESP8266

 Don't copy this. It requires messing with mains 230V that is lethal!

Seriously. Don't.

So here in finland winters are cold. Even at as south as Helsinki temperature can go bellow -25°C or -13°F so cars like some preheating before they are started for maximizing librication and minimizing gasoline consumption and engine wear. Also most of the people have heater blower inside car to heat it from the inside so it melts ice and snow from the windows. (Also it's much more comfortable to go and sit in the warm car.)

Till now i did not have any proper timing system or anything to turn heater on for x amount of time or schedule heating. There is only cable in the kitchen that goes through the wall outside and when you want to heat up car you plug the cable inside to socket. This means you might forget to do so, or remove the cable after heating meaning that car keeps getting heat even tho it's not necessary thus wasting electricity. (And too much heat is not good for car either since it causes oil from inside to dry out and flow down again reducing lubrication.)

Then i decided that timer/automation would be awesome. And since i need car kinda random times of day, i did not want those mechanical or digital timers that you plug to socket. Also something i can switch on from bed when i wake up would be totally great. So i started thinking and decided to make my own with ESP8266-12E and couple relays.