In this paper, 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.

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.

Using external PSRAM on the MCX FlexSPI port can enable a large degree of application flexibility. In this paper we show how to add 8MB of Octal DDR PSRAM to the MCXN947 and execute baseline performance tests.

The MCX A is one of latest members of the MCX all-purpose microcontroller device series. All MCX A devices include a Full-Speed USB device (USBFS) controller with onboard PHY. The combination of small / low pin count device packages such as a 5mm² 32QFN with the full speed USB positions MCX A for interesting USB peripheral applications. MCX A works with the open source TinyUSB stack. In this paper we should how to integrate TinyUSB with the MCUXpresso build tooling and create BLDC hall effect sensor simulator with a WebUSB UI.