I am looking to make an aural tone generator using an arduino, and I kinda need some help to see if I can actually do this. I am not familiar with this item at all, but I do have an avionics background.
I have a car with some AEM aftermarket gauges that monitor fuel pressure, oil pressure, oil temp, water temp, boost, and Air Fuel Ratio, which output 0-5 Volts DC depending one what the signal value is.
Now what I would like to do is divide the gauge output into 2 groups, that is have an aural tone that goes off for HIGH voltage values, that allows me to know aurally that I have high oil temp water temp ect, and then an aural tone that goes of for LOW voltage values, which tells me I lost oil pressure, fuel pressure ect. I would also like to broadcast the 2 different aural tones through the cars stereo system, since it is rather loud.
Basically I was curious if this is possible at all with the arduino. As far as programming wise, I would need some help, as I know basic C++ with MS Visual Studio.
I have a couple of questions related to the arduino:
What is its limit in input voltage?
How can I output 2 different tones?
Is it possible to have tones with a voice over, like aircraft have with “terrain”?
Look forward to the advice!
I should note that this would have no screen to monitor, so maybe a test button should be used as a press and hold, to run though a test sequence? Ideally what I would want is when I turn the car on, have the ardunio boot up within 15 secs. Thanks!