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Replying to @josecastillo
Piping 3.7 volts from my Nordic Power Profiler into the battery pin of a stock feather M0, I’m drawing just shy of 128 microamperes, or 0.128 mA. Okay, but I’d like to get that lower. And at the suggestion of Ladyada herself, I have my sights set on the voltage regulator…
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