An RTOS for an 8-pin ARM CPU
While researching another post recently, I tripped over an impressively small RTOS (real time operating system) that can be built …
Category Archives: Technologies
PDM in another 8-pin CPU
This post explores interfacing a PDM microphone with an NXP LPC810 ARM CORTEX-M0 microprocessor, taking advantage of its existing peripherals …
SPL is Logarithmic
In this post, we discuss why we represent SPL on a logarithmic scale, why you should care, and how we …
PDM in ATTiny85 Source Code
This is part of a series of articles on the general subject of audio signal processing from air to information. …
Resolution of audio recovered from a PDM data stream
This is part of a series of articles on the general subject of audio signal processing from air to information. …
PDM in a Tiny CPU
This is part of a series of articles on the general subject of audio signal processing from air to information. …
Using a PDM Microphone
This is part of a series of articles on the general subject of audio signal processing from air to information. …
Introduction to MEMS Microphones
This is the first of several articles on the general subject of audio signal processing, starting at the interface between …
A Practical Example of I/O Interfacing to the Raspberry Pi
The Raspberry Pi is an inexpensive single board computer barely larger than a credit card. It has become very popular …
Digression: Using OAuth 2.0 at WordPress.com
This is a digression from a series of posts discussing using a tool written in Lua to publishing posts on …
Words from Cheshire Engineering Corp. 