ease of use? - Page 2

scott_fx · 07-14-2007, 03:36 AM

i think i am grasping it now, thanks.

greenman100 · 07-14-2007, 09:22 AM

That is our configuration, and you attach a relay to those two terminals.

This works great because it makes relays simple to hook up, since 12v is part of the circuit.

However, you need to switch the EXISTING voltage, not insert 12v. Relays are great for that.

scott_fx · 07-23-2007, 04:39 AM

hey guys, thanks for all the input, i think i'm going to have to pass on this for now. I think it'll just be a bit too far over my head especially with the display and rotary temp knobs.

hopefully in the future i'll find a use for this device and will be able to implement it in my install. I think this is an amazing product and would love to support you guys.

jordan24 · 07-23-2007, 05:38 AM

Quote: Originally Posted by greenman100

You can, yes, but you have to have a pretty good idea of what you're doing, and you'd have to understand what those buttons are doing, also. I can't really tell you how to hook it up without having it in from of me to test and understand how it works. I can say without a doubt that disconnecting the switches and connecting the relays will work.

yes, i think we have to have a pretty good idea of what you're doing.thanks!

Red_Baron · 10-29-2007, 09:56 PM

I want to do something simular with the hvac controls, but I don't want to use anything from the old controls. All the knobs are variable resistors, and you stated those can be controled by the brain right?
Attached is the pin outs for the controls I was thinking of replacing with the fusion brain. Thanks for any help you can give me, and thanks for the great product. I hope to be using it soon in my carpc install.
--
Red Baron

h3rk · 10-29-2007, 10:42 PM

Quote: Originally Posted by Red_Baron

I want to do something simular with the hvac controls, but I don't want to use anything from the old controls. All the knobs are variable resistors, and you stated those can be controled by the brain right?
Attached is the pin outs for the controls I was thinking of replacing with the fusion brain. Thanks for any help you can give me, and thanks for the great product. I hope to be using it soon in my carpc install.
--
Red Baron

Looks your fan switch closes contacts across a tapped resistor like most. 4 speeds right, probably gonna use 4 digital outputs to close contacts in succession across the resistor, full resistance= low speed; all contacts closed (resistor shorted) =max speed. Very possible. This knob is not itself a variable resistor.

The switch that controls the position, the 'mode' switch is just a sequenced switch that opens and closes discrete outputs, this is exactly the kind of stuff that the brain is designed for. Gonna need more than that wiring table to be sure what to use and how, but it's very possible. This knob is not a variable resistor.

The knob that controls temperature may be not be a resistor, I say that because:

"TEMPERATURE SWITCH
The temperature switch controls the temperature door position that will be used to regulate the air conditioning system's discharge air temperature. The switch includes a rack amp; pinion and a cable"

Sounds like it uses a bowden cable setup, and if it does, your one of the unluck ones that is going to have to set up a servo on the blend (temperature) damper (flap) at the airbox. If not, if it is a variable resistor, then, you're going to have to wait until the make the analog output add-on available to replicate it.

For servo control of dampers, I think some people have done it using mastero's aircon. Use the fusion but check out the control of HVAC via serial connection thread in the Hardware Design forum ( search: servo ). ]
Or Check out the manual for the full automatic climate control version for your vehicle or one very similar, maybe you can swap out some OEM stuff if this is the case.

Red_Baron · 10-29-2007, 11:02 PM

yeah I knew the fan control wasn't a resistor and should have stated that my bad. Well I don't believe the temp switch uses a 'bowden cable' setup. I should have attached the wiring pictures for you to view earlier. The exploded view of the heater assembly shows that the inlet is actuator motor controled. Also waiting for you to make the "analog output add-on available to replicate it" isn't a problem. Thanks again for the help and the quick reply.

h3rk · 10-30-2007, 06:45 AM

Yep, looks like you have a great setup to put a brain in your climate controls. I'll be doing a very similar setup, controlling it with my modernity skin. I was hoping to increase the number of fan speed settings from 4 to 10, but I'm running into roadblocks with that. Anyway, if you haven't had a whole lot of experience with hacking into your AC controls, (since you were asking for help with this), keep an eye out for greenman100's writeup; and I will be going into the details of accurate automatic climate control through the skin in my Modernity thread.

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