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Red/Blue LEDS in vents to correspond hot air/cold air

5.4K views 15 replies 13 participants last post by  capflyboy05  
#1 ·
I was wondering if it would be possible to put Red & Blue LEDS in the vents to correpsond with what temperature air is coming out. For example, when you turn the dial to warm air, or heat, the red LEDs will turn on and the same with turning the temperature control dial to cold air with the blue LEDS to turn on. I think it would look sick and was wondering if anyone thought of it, actually did it, or if it is possible. Thanks!
 
#6 ·
You could wire some leads to the temp control knob...as a relay between the LEDs and the power wire. A bit complicated, whichever way you go.
 
#11 ·
You could easily run constant 12 to two circuits, each of which using a thermistor (thermal-resistor), however you would wind up with purple at "warm" temps. Keep in mind that LEDs do not have a very linear voltage-light output curve, they are for the most part on or off, with a very narrow section in between. You'll have to get the voltage dividers just right, or use incandescent bulbs with colored covers.
 
#15 ·
[quote author=as1an_1nvas10n link=topic=133376.msg2938623#msg2938623 date=1234732523]
i'm sure theres a way to do it. but you'd probably have to find different chips that sense temperature and connect circuits according to the temperature. look around on google. i'd love to see it
[/quote]

It shouldn't even need temp sensors or anything like that, just wire it into the temp knob somehow.

Except for those that have one of those new-fangled "digital" temp controls :p