Switching off SD cards for low power data logging


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

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