Audio from SDCard to USB & AudioJack Speaker

Other Hardware Audio
1

Hello there!

I had an idea of a speaker playing a song as soon as I open the gate of my garage. I made some notes but I still couldn't figure out how it will work.

These are the objects I think could make this possible:

- Battery Snap to barrel plug, so I can power the Arduino Uno:

- MicroSD Card Module, so the Arduino can get the Music:

- Male to Female jumper wires, so I can connect the MicroSD Card module and other modules:

- Trust Ziva USB Speaker, to play the sound:

- USB Module, to connect the speakers to the Arduino Uno:

900×900 42.9 KB

- 3.5mm Audio Jack module, to connect the speakers to the Arduino Uno:

![](https://s4.sywcdn.net/getImage?url=http%3A%2F%2Fc.shld.net%2Frpx%2Fi%2Fs%2Fpi%2Fmp%2F10152378%2Fprod_16555413224%3Fsrc%3Dhttps%253A%252F%252Fimages-na.ssl-images- amazon.com%252Fimages%252FI%252F51AXYDk9-lL.SL1024.jpg%26d%3Db55dfb648ee831da24f4601e3aca9824e819c6e1&t=Product&w=1000&h=1000&qlt=100&mrg=1&str=1&s=71f703d1ab186695d271ac846711efef)

I don't know a lot about the Arduino so it might help explaining in detail if somebody is willing to help.

2

USB speakers require a USB driver (Typically running under Windows, OS-X, or Linux). And, the UNO is a USB device (like the USB speaker) not a USB host.

Your best bet is an [u]audio shield[/u]. (Maybe that's what you have... Your image doesn't show-up in my browser.) They come with various features, but they all have a memory slot, a sample-rate clock, a DAC, and all of the necessary firmware, etc., to "make sound". The Arduino is just a "master controller", and in some cases the audio shield can work without a microcontroller.

An audio shield will work with regular (analog) powered computer speakers, or with an amplifier and speakers. Or, some audio shields can drive a passive 8-Ohm speaker (at low power).