With the start of a new decade, a pandemic where we are on lock-down and the arrival spring, it was a perfect time to go through the office and reorganize. While I was sorting and organizing, I came across an old LED Sequencer that I had built back when I was 17 years old which … Continue reading A Microchip PIC16F84 LED Sequencer – Part 1
Category: Hardware
7 Steps to Create a Reusable Debounce Algorithm
A quick google search reveals that there are over 212,000 websites that examine how to debounce a button. After examining a number of them it is obvious that these implementations are not meant for reuse. The implementations and strategies often lack scalability, the ability to debounce multiple buttons easily and portability. They are tightly coupled … Continue reading 7 Steps to Create a Reusable Debounce Algorithm
2 Techniques to Version Embedded Hardware
When it comes to embedded systems version control, I often immediately jump to thinking about the software. Software changes often and carefully managing those changes are crucial, but so is versioning the hardware. A small hardware change could obsolesce every version of software up to that hardware change. In todays’ post, we are going to … Continue reading 2 Techniques to Version Embedded Hardware
Protect Your Tools when the Hardware Bites Back
I recently had an exciting experience where I was working with a client who was having I2C issues with a new board they had developed. To speed up the debugging process, I connected my I2C/SPI bus tool to their development board and custom-built hardware. Being able to view the I2C traffic would allow a quick … Continue reading Protect Your Tools when the Hardware Bites Back
Creating an SWD Adapter for STM32 Development Boards (Part 3)
My adapter boards have arrived! As we discussed in the first two parts, the on-board debugger that comes with most development boards is functional but often offers far less than a professional debugger. We’ve been exploring how we can create an adapter board for the ST Microelectronic development boards that will allow us to use … Continue reading Creating an SWD Adapter for STM32 Development Boards (Part 3)
PCB Shops for Rapid Prototyping
I recently complete my series on “Creating an SWD Adapter for STM32 Development Boards” which you can find links to below: Part 1 Part 2 Part 3 While the prototype turned out great, I could have decreased my prototyping costs if I had spent the time to do a little more research on board houses. … Continue reading PCB Shops for Rapid Prototyping
7 Tips for Selecting a Secure Microcontroller
Developing a secure, connected device that can also operate efficiently requires that developers select a microcontroller that includes specific hardware and software features. These features can range from true random number generators through secure libraries. Let’s examine several tips for the hardware and software that developers should consider having in their secure microcontroller. Tip #1 … Continue reading 7 Tips for Selecting a Secure Microcontroller
Tips and Tricks – 10 Steps for Selecting a Microcontroller (2017)
The way developers select a microcontroller for their embedded systems is dramatically changing. Traditionally developers have focused on the hardware first and thought about the software second. Selecting a microcontroller in this manner, will result in failure today. There are several new steps that developers need to follow if they are going to be successful … Continue reading Tips and Tricks – 10 Steps for Selecting a Microcontroller (2017)
Hardware In-Loop Testing
Hardware In-Loop (HIL) testing runs the test case code on the target microcontroller rather than using a mocked software layer to act as the hardware. HIL testing can be extremely useful for verifying that hardware accesses from a HAL are working as expected and even test that all outputs from the system work as expected. … Continue reading Hardware In-Loop Testing
Tips and Tricks – Build an Embedded Workbench for less than $1000
An embedded systems developer looking to build a workbench could spend tens of thousands of dollars on test equipment, development boards and miscellaneous tools. Unfortunately, most equipment just sits on the bench collecting dust and is rarely if ever used. Let’s examine the core tools that every developer needs to build an embedded workbench on … Continue reading Tips and Tricks – Build an Embedded Workbench for less than $1000