Thread: Climate Control
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Old 04-05-2008, 04:02 AM   #9
Cocide
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I guess this is where I would need to provide more information about my install plans. My biggest concern with running the climate off of a pc is if the pc is, for whatever reason, not functioning correctly or at all.

Having an easy way to interface a frontend with digital outputs is almost all I need.

At this point it seems to me that my best solution is to write my own code on a microcontroller that will control the elements of the system. all I want is to get the ability to have temporary push buttons on the pc that raise and lower the target temp (two separate outputs), the ability to override the system and do manual control (override pin then pins to turn zones on or off) based on latching buttons, and control of mixer and blower (four more temporary pins).

Is the Brain is able to pulse outputs so I could make a basic instruction system and do it all over one pin?

That way I could have the Brain connect to my system, that will automate, and allow it to on the fly modify.

I have found several posts or topics that by h3rk has commented on, most of which have drastically changed my concept of how to automate the system effectively.

Using a Brain would I be able to script actions such as:
if inputX high
call up a keypad
get value
compare to variable / file
if input == constant
set outputY high
wait [time]
set outY low

Basically if prompted allow me to enter a pin number then start the car.

If it is not obvious that am stuck in my view that it is prone to failure and I could find better low power solutions. Don't take me wrong, I do like the idea of a computer in the car, in fact thats the idea I started with a few months ago. Unfortunately I have been unable to generate a VGA signal grater then 640x480 with 18bit color easily, not to add that did not look anywhere as nice as some of the interfaces do and would be difficult to say the least to code a good interface into the system.

Well back to topi.... closer to topic.

The Brain looks like exactly what I need, is it linux compatible? Dose it allow for data transfer (even slow, I'm talking just if pressed send 00110101 then low)? Can a command force some part of the fronted to focus to do its job (the whole keypad thing)?

Thanks again for the help and advice
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