[HH] Portable Pi Power
Tom Metro
tmetro+hhacking at gmail.com
Sat Mar 1 18:07:11 EST 2014
Make Magazine explains how to power a Raspberry Pi from an 18V power
tool battery:
http://makezine.com/projects/portable-pi-power-raspbery-pi-to-go/
The author first tried a simple linear regulator, which overheated, then
an off-the-shelf car adapter, which didn't have a stable enough output
to keep the Pi from crashing. Finally he tried a custom circuit using a
Murata's OKI-78SR-5/1.5-W36-C, which puts out 5-volts at 1.6 amps. The
OKI-78SR series are switching regulators designed to be almost drop-in
replacements for the old 78xx linear regulators, requiring minimal
support components.
-Tom
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