Examining The Stack For Fun And Profit

Steve Branam February 19, 20201 comment

Well, maybe not so much for profit, but certainly for fun. This is a wandering journey of exploration and discovery, learning a variety of interesting and useful things.

One of the concerns with an embedded system is how much memory it needs, known as the memory footprint. This consists of the persistent storage needed for the program (i.e. the flash memory or filesystem space that stores the executable image), and the volatile storage needed to hold the data while executing over long...

Video-Based STEM Embedded Systems Curriculum, Part 2

Steve Branam October 25, 2021
Contents: Introduction

This post continues from part 1. It contains the first three lesson plans.

Lesson Plan 1: Introducing Arduino

This lesson is first because Arduino is the simplest programming environment, yet allows lots of interaction with hardware. In...

VolksEEG Project: Initial Hardware Architecture

Steve Branam November 2, 20211 comment

The initial hardware architecture for the prototype VolksEEG uses an Adafruit Feather nRF52840 Sense, which connects to a PC via USB for UI (User Interface). Through several additional chips, this provides power to and acquires data from the ADS1299 ADC.

An important topic I mentioned in my introduction to the project is isolation, ensuring there is no conductive path for current through the patient. The architecture is therefore split into...