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Embedded Systems - free EdX course by UT-Austin!

Lonnie Honeycutt October 29, 20131 comment

I was very excited to see that there will be an Embedded Systems class available for free at https://www.edx.org/course/utaustin/ut-6-01x/embedded-systems-shape-world/1172

It's free to sign up and take the online class at the EdX website.

More exciting is that the class is based on a TI Launchpad Tiva microcontroller development board.  The Tiva Launchpad features an 80-MHz ARM Cortex M-4 MCU with 256 KB of flash storage, 32 KB of RAM and 43 general purpose I/O pins.  


Introduction to Microcontrollers - Buttons and Bouncing

Mike Silva October 26, 20133 comments

What Is A Button?

To your hardware, that is.  As discussed in Introduction to Microcontrollers - More On GPIO, a button (or key, or switch, or any form of mechanical contact) is generally hooked up to a microcontroller so as to generate a certain logic level when pushed or closed or "active," and the opposite logic level when unpushed or open or "inactive."  The active logic level can be either '0' or '1', but for reasons both historical and electrical, an...


Arduino robotics #4 - HC-SR04 ultrasonic sensor

Lonnie Honeycutt October 20, 20131 comment
Arduino Robotics

Arduino robotics is a series of article chronicling my first autonomous robot build, Clusterbot.  This build is meant to be affordable, relatively easy and instructive.  The total cost of the build is around $50.  

1. Arduino robotics - motor control2. Arduino robotics - chassis, locomotion and power3. Arduino robotics - wiring, coding and a test run4.

Arduino robotics #3 - wiring, coding and a test run

Lonnie Honeycutt October 17, 2013
Arduino Robotics

Arduino robotics is a series of article chronicling my first autonomous robot build, Clusterbot.  This build is meant to be affordable, relatively easy and instructive.  The total cost of the build is around $50.  

1. Arduino robotics - motor control2. Arduino robotics - chassis, locomotion and power3. Arduino robotics - wiring, coding and a test run4. 

Arduino robotics #2 - chassis, locomotion and power

Lonnie Honeycutt October 16, 20131 comment
Arduino Robotics

Beginner robotics is a series of article chronicling my first autonomous robot build, Clusterbot.  This build is meant to be affordable, relatively easy and instructive.  The total cost of the build is around $50.  

1. Arduino robotics - motor control2. Arduino robotics - chassis, locomotion and power3. Arduino robotics - wiring, coding and a test run4. 

Introduction to Microcontrollers - More Timers and Displays

Mike Silva October 15, 20133 comments

Building Your World Around Timers

By now you have seen four different ways to use timers in your programs.  Next we will look at some ways to produce the effect of multiple parallel streams of work in your program with the help of timers.  This effect is only an appearance, not a reality, since a single microcontroller (one core) can only run a single thread of code.  However, since microcontrollers are so fast in relation to a great many of the tasks to...


Arduino robotics #1 - motor control

Lonnie Honeycutt October 13, 20133 comments
Arduino Robotics

Beginner robotics is a series of article chronicling my first autonomous robot build, Clusterbot.  This build is meant to be affordable, relatively easy and instructive.  The total cost of the build is around $50.  

1. Arduino robotics - motor control2. Arduino robotics - chassis, locomotion and power3. Arduino robotics - wiring, coding and a test run4. 

Introduction to Microcontrollers - Adding Some Real-World Hardware

Mike Silva October 8, 20132 comments

When 2 LEDs Just Don't Cut It Anymore

So far, we've done everything in this series using two LEDs and one button.  I'm guessing that the thrill of blinking an LED has worn off by now, hard as that is to imagine.  What's more, we've just about reached the limits of what we can learn with such limited I/O.  We have come to the point where we need to add some hardware to our setup to continue with additional concepts and microcontroller...


Introduction to Microcontrollers - Timers

Mike Silva September 27, 20132 comments

Timers - Because "When" Matters

Computer programs are odd things, for one reason because they have no concept of time.  They may have the concept of sequential execution, but the time between instructions can be essentially any number and the program won't notice or care (unless assumptions about time have been built into the program by the programmer).  But the real world is not like this.  In the real world, especially the real embedded world,...


Introduction to Microcontrollers - More On Interrupts

Mike Silva September 25, 2013

A Little More Detail About The Interrupt Mechanism

It's time to look a little closer at what happens in an interrupt request and response.  Again this is in general terms, and different microcontroller designs may do things somewhat differently, but the basics remain the same.  Most but not all interrupt requests are latched, which means the interrupt event sets a flag that stays set even if the interrupt event then goes away.  It is this latched flag...


STM32 VS Code Extension Under The Hood

Peter McLaughlin April 21, 2023

VS Code is becoming the "go to" environment for many developers. Increasingly, toolchain providers are publishing VS Code extensions and ST has recently followed suit. Additionally, CMake is significantly growing in popularity, with many projects adopting it for its ease of use and flexibility. This video shows how the STM32 VS Code extension works under the hood and how to get more out of it.

Specifically, we'll review the CMake files generated by the VS Code extension and how to modify...


Getting Started With Zephyr: Writing Data to EEPROM

Mohammed Billoo December 6, 20235 comments

In this blog post, I show how to implement a Zephyr application to interact with EEPROM. I show how the Zephyr device driver model allows application writers to be free of the underlying implementation details. Unfortunately, the application didn't work as expected, and I'm still troubleshooting the cause.


Getting Started With Zephyr: Saving Data To Files

Mohammed Billoo October 31, 2023

In this blog post, I show how to implement a Zephyr application to mount a microSD card, create a new file on the microSD card, and write data to it. The lessons learned from such an application can be helpful for devices out in the field that need to write data to off-board memory periodically, especially in cases where Internet access may be sporadic.


What does it mean to be 'Turing complete'?

Nathan Jones October 16, 20235 comments

The term "Turing complete" describes all computers and even some things we don't expect to be as powerful as a typical computer. In this article, I describe what it means and discuss the implications of Turing completeness on projects that need just a little more power, on alternative processor designs, and even security.


Make Your Own MCU Boards (2023 Teardown Conference)

Nathan Jones March 7, 2024

Ditch the development boards! Products like the Nucleo development boards serve a wonderful purpose, but they’re ill-suited for projects that need to be small and cheap, such as hobby projects or products just beginning a production run. In this talk (a recording from the 2023 Teardown Conference), you’ll learn how to put a microcontroller or other custom circuit on a PCB a little larger than a stick of gum for less than $3 a board.


Getting Started with (Apache) NuttX RTOS Part 2 - Looking Inside and Creating Your Customized Image

Alan C Assis July 5, 2023

In the previous article (https://www.embeddedrelated.com/showarticle/1524.p...) we saw how to run NuttX RTOS using the SIMulator. Today we will see how NuttX's directory tree is organized and how to use the menuconfig to enable some applications, including some tricks to search and solve dependencies.

NuttX Directories organization:

If you have previously compiled the Linux kernel or the U-Boot bootloader you will see that the NuttX source tree organization is...


nRF5 to nRF Connect SDK migration via DFU over BLE

Mike Voytovich September 7, 20232 comments

This writeup contains some notes on how I was able to migrate one of my clients projects based on the nRF5 SDK, to nRF Connect SDK (NCS) based firmware, via a DFU to devices in the field over BLE.


7 Essential Steps for Reducing Power Consumption in Embedded Devices

Jacob Beningo June 26, 20241 comment

Reducing the amount of power your embedded device is consuming is not trivial. With so many devices moving to battery operations today, maximizing battery life can be the difference between a happy, raving customer and an unhappy one that ruins your company's reputation. This post explores seven steps for optimizing your embedded systems' power consumption. You'll gain insights into the steps and techniques necessary along with receiving a few resources to help you on your journey.


Mounting plate for Arduino

Ed Nutter November 30, 2015

While having a breadboard with your microcontroller is necessary, it is very cumbersome if the two aren't fastened together somehow. You can buy mounting plates, but I choose to make one.


Getting Started with the Microchip PIC® Microcontroller

Luther Stanton March 11, 2024

This first post of a five part series looks at the available hardware options for getting started with Microchip 8-bit PIC® Microcontroller, explores the MPLAB® X Integrated Development Environment and walks through setting up a project to expose the configured clock to an external pin and implement a single output GPIO to light an LED.


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