Redesigning the rest of my dash...
Has anyone thought about redesigning the A/C climate controls? I would imagine they are just a series of switches and variable resistors, although I'm not certain.
What I would like to do is to make my climate controls similar to the cadillac and Lamborghini style designs, where you simply set a temperature and then the car maintains that temperature on its own. Could this be possible to do such a conversion? I'd imagine you could find some sort of digital thermometer and then based on the output from that, have the car turn on heat or air conditioning, etc.
Just something to think about, I don't really know enough yet myself to attempt it, but I'm familiar with the basics of digital systems.
It would really depend on the car system. Some use mechanical switches, some use digital systems, some use some funky vacuum hose things. It your system's all digital, you shouldn't have much trouble
I want to do the same thing for my ride. but i wanted it to be computer controled. this way when i remote start my car the sytem would detect the diff temps (inside/outside and engin) and adjust the temp with a/c heat acordingly.
It's kinda funny that I should see this post, I'm trying to do something like this on my own. I have a Chrysler Cirrus, it uses a combination of vacuum hoses and digital interface for the HVAC controls.
As for the automatic climate control, I have yet to see a system that will switch between A/C and the heater efficiently enough that makes me want to implement it. HVAC runs in my family,or business that is.
Unless you want your A/C to kick in the dead of a snowstorm cause your cab temp went up to 24(metric) instead of staying at 20 be my guest and try it.
But if you want to keep your car at a certain temp use a thermocouple with a feedback loop, should be very simple to design.
My problem is that I'm going to require some sort of solenoid use to move the vacuum hose switches.
I know this is not going to help much, but I did see about a year ago, an automatic digital climate control system for cars. It was universal and had settings for both summer and winter. In principal it works on the simple heating and cooling premise of a house by cycling either the heat or A/C on and off until a desired temperature is reached. In other words, in winter you leave the heat all the way up and in summer the a/c all the way down. It is the fan that is cycled between 1,2,3, and 4 speeds simply.
This can built very easily, if you get a project style digital thermometer with threshold alarms and transistor switched outputs (Radio Shack) and some relays.
Unfortunately, I do not remember where I saw this but it was in a catalog in a car accessorie/Stereo place and it was about $169.00 Canadian.
Fortunately for me, I have automatic climate control in my 2000 Accord. hehe.. Very smartly built in the Accord I might add.