First… I would like to say thank you for looking at my idea, and I hope it’s not too crazy. I will get right down to the nitty gritty.
Reason for the project: I fly on helicopters in the military for hours on end.
Project: I would like to make an automatic audio switch (a/b audio switch)
Details:
2 inputs
1- Helicopter ISC ( internal com ) ----- U174 ( is the standard helicopter plug)
2- MP3/Phone ------ Normal 3.5
1 output
1- This would go to my helmet
Idea expanded – I would like to get into the helicopter, and plug the helicopter com cord into this “box”(i1 ), then plug my helmet in to “box”(o1). This would allow me to hear everything over the ICS(heli coms) then I would like to plug a mp3 player into the “box”(i2). When audio from (i1) the helicopter is played it cuts off (i2) the mp3 music so I don’t miss anything important.
Extra challenges –
1-The helicopter is a low impedance system. (150ohms)
2-The power supply would need to by a battery pack of some sort
Extra - I would be willing to pay for a step by step guide , "project kit with script", " list of parts and a few pictures" anything to get this to work. I'm not sure how that works(Paying for stuff on here ) but please God it would make my life and so many others just that much "mo better" on deployments and in the day to day grind.
It is not crazy, but my first reaction was " Rube Goldberg".
There got to be a simple way to do this and probably been done using two or less parts. Just kidding.
Let me do some research.
Cheers Vaclav
drakraze:
Is there anything with Arduino I could do? That link seems a touch vague and hard to follow
I'm not sure whether you comprehend this, but an Arduino is a microcontroller module, essentially a miniature computer with modest processing capability which can be programmed to make decisions based on digital - and some analog - inputs.
What you are looking for is a form of VOX, This is a purely analog function which has nothing whatsoever to do with Arduinox.
Can't really find a circuit I like. The circuit would basically consist of an amplifier which allows it to respond to the smallest signal in the original headphones, a voltage doubler to derive a DC bias according to that amplified signal, a capacitor to hold the voltage in between speech elements, and a transistor to drive a relay which switches between your headphone source and your MP3 source.
