I just watned to ask if it would be possible to create a JDM car melody box that plays mp3 sounds when i turn the ignition on in my car. I have in mind something like the Ressha melody box(https://www.youtube.com/watch?v=-a9V3zV7vkY) or Dasai small passenger(ULTIMATE SMALL PASSENGER) with an ability to change volume, tracks and play random sound every time i turn on the car. I have absolutely no expirience with arduino so any help would be appreciated.
I would recommend a small Arduino like Nano V3 or Pro Mini/Micro, and a DFplayer Mini board.
Does your vehicle have USB output that could power the circuit? If not, I would suggest to purchase a 12V-5V adapter module sold for use in vehicles with at least 1A output.