Journal of Applied Embedded Systems


Building a cloud connected acoustic vibration sensor by combining the Zephyr RTOS with bare metal peripheral access.

Building a cloud connected acoustic vibration sensor by combining the  Zephyr RTOS with bare metal peripheral access.

In this article, we will explore a battery power acoustic machine monitoring design built using the Nordic NRF9160 and the Zephyr real-time operating system (RTOS). We’ll demonstrate how to get to the “metal” and optimize low-level peripheral, digital signal processing, and efficient data packing for transmission to a cloud backend. All while leveraging Zephyr's high-level abstractions and build system that enable rapid application development and software lifecycle management.

What is Wavenumber?

What is Wavenumber?

I often get the question "Wavenumber....never heard of that one before! What is it?". It does seem like a word not common in the day-to-day lexicon. My observation is that even people with science and engineering background have either never heard about it or have a substrate-level understanding of it. Here we will learn about wavenumber using its trendier cousin frequency.

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