RoyN

accensound you miss the point I think... although there are all those complex types of interactions between HVAC control unit and HVAC compressors, etc, the control units follow some sort of standard.... basically knobs/buttons/sliders, etc...

from what I understsand this project owuld be able to control the control unit, not replace it! so again, it will work on most units I gather...

doing it directly would be basically impossible... tka emy car for instance, the control unit speaks to a AirCon ECU, which only then commands the compressor... the protocol for airconecu->control unit comm is of course proprietary... but emulating a button press on the control unit is very much simple...

correct me if I'm worng Dancehaven, but this is how I think your gonna do it right?

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Roy

2005 Range Rover 4.4
Any ideas for putting a PC in this? :)

MP3Car.com

 

Danceheaven

SPOT ON

To a certain extent

To be totally hohnest based on what research we have already conducted

theres not that much to it!

Its a case of measureing and monitoring temp sensors and controlling various

outputs and motors based on the temp readings.

Theres no reason what you couldnt replace the entire system with this unit

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RoyN

what I'm saying is that you wont need to interface to complex things like vacuum hoses, etc...

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Roy

2005 Range Rover 4.4
Any ideas for putting a PC in this? :)

Danceheaven

Essentially yes

If people need to be able to drive a motor directly or fit a servo to control a

mechanical slider then the module will also allow this

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Scouse Monkey

Vehicle = Peugeot 306 with Auto Aircon
Year 1997
Air Con = Yes
Climate Control = No (auto mode)

AIR CON
=======

Air Con Button = Yes with LED indicator. Also auto on when windscreen selected for demisting

Climate control Button (Sometimes shown as AUTO) = Auto position on fan speed dial

RECIRCULATE
============

Recirculate button = Yes (Recirculates cabin air rather than use road air)

FAN SPEED SETTING
=================

Up and Down Buttons = No

Rotary Switch with hard limit = Yes - many positions + auto setting using mechanical feel. Control interface via poteniometer on PCB

Dial angle: approx 120-150deg

Rotary Switch with no hard limit = No

Mechanical Slider = No

Electronic Slider = No

Note: Please complete number of positions for Fan adjustment

TEMPERATURE CONTROL
=====================

Temperature Range in degrees C = 21 deg setting only - others are colder or hotter

Up and Down Buttons = No

Rotary Switch with hard limit = yes

Angle: 270deg from max tempt to min temp with 21 deg at approx 150 deg.

Rotary Switch with no hard limit = no

Mechanical Slider = No

Electronic Slider = No

Note: Please complete number of positions for temp adjustment

VENT POSITON CONTROL
=====================

Number of positons = 4 (screen, main vents + screen, floor, main vents) - potentiometer interface to pcb for activating A/C etc + mechanical rotary cam connected to 2 cables

Number of Vent buttons = 0

Rotary Switch with hard limit = yes

Angle: 270 deg.

Mechanical Slider = No

Electronic Slider = No

FRONT WINDSCREEN DEMISTER
==========================

As one of the Vent Postions = Yes

Button = No

Timeout = No

REAR WINDSCREEN DEMISTER
=========================

Button = Yes

Timeout = Yes

================================================== ==============

Rotation angle for dials

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If you want more answers on anything I have posted you can find me at digital-car.co.uk

or skiing or diving or doing somthing else fun!

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