A customized device that is connected to car speakers and is able to play audio files via a mobile app, using wifi. The normal car radio is to be connected to the wifi Audio receiver, which has an inbuilt output switcher that interchanges between the normal radio output and the wifi audio output. The wifi receiver then channels the selected output to the speakers. This is done so that the user can switch between the standard radio output or the wifi audio receiver output. I have attached a sketch for better illustration.
8 фрілансерів(-и) у середньому готові виконати цю роботу за $235
i am a professional electronic designer and made a lot of circuits for more than 8 years i hope i can help you and i will be able to get your target Stay tuned, I'm still working on this proposal.