Powering cellular IoT for months in the wild

For a LTE M1 connected IoT project that is meant to operate in the wild for months at a time, we’re designing a set of rechargeable power packs that will provide the electrons we need in an easily swapped out form factor. In the meantime, we needed some way to test the modules and profile…

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Quick & Easy Attitude and Heading Reference System

Though I’d used the Razor 9DoF and a few other IMUs, it’d been a few years since I got to play with an AHRS.  Recently, I got a request to tweak a system using the MPU-9250, a nine-axis (gyro, accelerometer and compass) MEMS device, to see how nicely we could get it to play. I…

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