Learning A New Microcontroller

Steve Branam

Contents: Introduction Background For The Beginner The Peripherals System Complexity Support Software Do It Like Phil The Programs GPIO And Timers UART And Timers I2C/SPI PWM ADC Go Crazy And Combine Them All WET And DRY...


Development of the MOS Technology 6502: A Historical Perspective

Jason Sachs

One ubiquitous microprocessor of the late 1970s and 1980s was the MOS Technology MCS 6502. I included a section on the development of the 6502 in Part 2 of Supply Chain Games, and have posted it as an excerpt here, as I believe it is deserving...


Supply Chain Games: What Have We Learned From the Great Semiconductor Shortage of 2021? (Part 2)

Jason Sachs

Welcome back! Today we’re going to zoom around again in some odd directions, and give a roundabout introduction to the semiconductor industry, touching on some of the following questions: How do semiconductors get designed and...


Patterns of Thinking: Metaphors in Programming

Miro Samek

Several years ago, I once attended an “Object-Oriented Analysis and Design” training. As most such courses go, the instructor began with brushing up on the fundamental OO concepts. When explaining inheritance, the instructor spontaneously...


Reading and Understanding Profitability Metrics from Financial Statements

Jason Sachs

Whoa! That has got to be the most serious-minded title I’ve ever written. Profitability Metrics from Financial Statements, indeed. I’m still writing Part 2 of my Supply Chain Games article, and I was about to mention something about...


A Second Look at Slew Rate Limiters

Jason Sachs

I recently had to pick a slew rate for a current waveform, and I got this feeling of déjà vu… hadn’t I gone through this effort already? So I looked, and lo and behold, way back in 2014 I wrote an article titled Slew Rate...


Supply Chain Games: What Have We Learned From the Great Semiconductor Shortage of 2021? (Part 1)

Jason Sachs

So by now I’m sure you’ve heard about the semiconductor shortage of 2021. For a few complicated reasons, demand is greater than supply, and not everybody who wants to buy integrated circuits can do so. Today we’re going to try...


Review: Modern Software Engineering

Steve Branam

This is actually a review of 3 books by Dave Farley, because they really form a set: Modern Software Engineering: Doing What Works to Build Better Software Faster (just released for 2022, 224 pages) Continuous Delivery: Reliable...


VolksEEG: Rust Development On Adafruit nRF52840 Feather Express

Steve Branam

Contents: Introduction Setup Hardware Workstation Software Checks USB Device Minicom JLinkExe FTHR840BOOT Contents OpenOCD VolksEEG/eeg-device-firmware PR "Merging initial implementation of the PC communications...


Working With ESP-C3-32S-Kit Dev Board

Steve Branam

Introduction The ESP-C3-32S-Kit is a small dev board made by Ai.Thinker, containing an ESP-C3-32S SoC module, supporting WiFi and BLE: Development for the board uses the Espressif IoT Development Framework...