Let me preface this by saying I'm very new to electronics. I have a bit of experience with programming, but nothing too low level.
So- I have an Arduino Due. I was able to successfully follow this instructable
for getting audio into the Due- at least, I can read it in the serial monitor and it appears to be working.
But I'm really having trouble getting audio out. At this point what I'd really like to do is send a sine wave (or white noise, or whatever- any kind of audio) out of the DAC in the simplest way possible. I'm working towards using the audio I'm getting from the input, but I just want to take small steps to start.
So I guess my question is, how do I get signal from the DAC into speakers? What does that circuit look like?