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<p>I just wasted a good chunk of a day chasing weird sensor behavior
with a Nucleo STM32F031K6 board. After seeing three flavors of
other misbehavior on top of the little detail of the sensor giving
goofy measurements it occurred to me to look at the sensor chip
power supply fed from the 3.3v pin of the dev board. What I found
is shown below. The noise spikes are almost 5V. Swapping in
another of the boards solved the problem.</p>
<p>-Pete</p>
<p><img src="cid:part1.4481FE37.F72C44DD@soper.us" alt=""></p>
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