Get some sleep, Mark!

I've just wired back up the original BlueGiga dev board, this time with analog audio instead of I2S and it's working well. My original BlueGiga dev board also has no working I2S either.

I have a choice in powering this system, and I've tried both and both work, and I'm wondering what your opinion of this is:

Option 1:
- Pololu voltage regulator's 5v output goes into VIN on the Arduino which goes into the Arduino voltage regulator.
- Everything else (5V input on BlueGiga board, Max232) are powered off the 5v rail coming off of the Arduino.

Option 2:
- VIN on Arduino is not used.
- Pololu voltage regulator powers everything and connects to everything's 5v rail, including Arduino's 5V rail, Max232, BlueGiga board's 5v input, everything.

Both have worked but I don't know which is correct.