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-   -   Arduino (or similar) and 12v exhaust cutout (https://www.diymobileaudio.com/forum/technical-advanced-car-audio-discussion/420409-arduino-similar-12v-exhaust-cutout.html)

damonryoung 08-13-2019 03:09 PM

Arduino (or similar) and 12v exhaust cutout
 
Hey ya'll... I've been stumped by this problem and wanted to reach out to some more seasoned 12v minds.

The exhaust on my RS4 has been really loud for nearly a year now and while I love it, there would be some times when being quieter would be handy. Took me quite a while to find something that worked and was OEM-ish. The OEM mufflers had internal flaps that were controlled by the vacuum system but was still not loud enough. I found mufflers by an Australian company called Varex. They have electric flaps (with reversing motors) built into the muffler and come with a fob to control them. They are currently wired in that fashion, but I want something more OEM.

Here's where you come in... I want the flaps to function with the "S" button in my car. Of course, that is only a momentary switch, not latching. I'm looking for some way to take that momentary switch output and make it latching for a pre-determined amount of time. I don't know the exact length of time yet, but I can find that out fairly quickly.

So my basic logic is as follows:
Odd number of "S" button push: Power to the flap for x amount of seconds
Even number of "S" button push: Reverse power to the flap for x amount of seconds.
Ignition power-off: Counter resets to 0


If there is an easier way to do this, I'm all ears!

Photo of car for attention:
https://live.staticflickr.com/65535/...0061a239_b.jpg

oabeieo 08-13-2019 05:21 PM

Re: Arduino (or similar) and 12v exhaust cutout
 
Check out the PAC TR-7

itís fully programmable, does + or - triggers

Has timers and pulse count triggers

Can do anything you want as far as triggering


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