Edward Mallon writes:
I saved SD power control to the end of my quest for low power logging, because of all the potential weirdness that could arise with the Arduino libraries. But after a reasonably thorough round of testing it all seems to be working OK with a BJT switching the ground line.
More details at Edward Mallon’s blog.
Via the Arduino forum.
from Dangerous Prototypes http://ift.tt/2qVo79t