I hope this makes sense! I'm trying to make a little box to hold our Pi0 Recalbox emulator with on-board sound driven by the PhatDAC and a mini-Amp. I'm using a Zero4U as USB Hub, but havent included that in my design 'drawings', just to try and keep things simple.
I'm not sure I have the right idea when it comes to the audio wiring.
My layout looks like this (ie. a messy mess)
With the real thing overlaid:
Just triple check my GPIO choices please (4 and 14 used to power the mini-Amp). I'm not sure what Ground I should use between the Pi and the DAC either:
Now, when it comes to wiring one speaker from this mini-Amp: Do I wire the speaker to one side (R+ and R-) or split it between channels (R+ and L-)?
And, is this the right way to wire the audio-out on the PhatDAC? Going from the DAC to the Mini-Amp, then to a single 3W speaker.
Going really low-budget and up-cycling some Amazon packaging! Hopefully, I'll be able to add-on a power/reset button and status LED. The speaker is made of clear plastic and with the LED housed inside the box should give off some cool ambient lighting.
I want it to be as raw and basic as possible to show you can make things from what's around you. I've used a built-in speaker instead of HDMI-Sound because the kids cheap monitors dont have built-in speakers and I don't want them to miss out on glorious 8Bit chiptunes!
Any pointers or criticism will be gratefully received! All aboard!