Serial1.print() causes Audio Library / Adapter Crackling.

[KurtE]

@kurtE, forgive my ignorance here, i understand in theory how "adding caps" can smooth out power draws or provide more available current for these heavy draw spikes.

in practice there are many types and values for caps. can you elaborate a little or help with links/keywords that might help me fix my current boards?

As I mentioned better answered by Hardware people. Me being a software guy, I have a tendency to try something and hope it works. Like maybe having a couple of reasonable large polcaps on both sides of voltage regulator like maybe 33uf (probably overkill), plus a few other decoupling capacitors, like .1uf. Again I might have one on both sides of Voltage regulator, plus maybe 1 right at the connections to XBee...

But again there are others up here who are much much much more hardware experts!