Data Validity in Embedded Systems
If you take a high-level view of software systems you might say that the overall goal of software is to generate outputs from inputs. It’s a gross simplification of a nuanced and complex field but the truth of the statement is unarguable: data goes in, is manipulated and then is spat out again.That’s what software does. The simplicity of the statement contributes to the joy of Computer Science majors who take an abstract view of everything from software to love but infuriates...
How to Estimate Encoder Velocity Without Making Stupid Mistakes: Part I
Here's a common problem: you have a quadrature encoder to measure the angular position of a motor, and you want to know both the position and the velocity. How do you do it? Some people do it poorly -- this article is how not to be one of them.
Well, first we need to get position. Quadrature encoders are incremental encoders, meaning they can only measure relative changes in position. They produce a pair of pulse trains, commonly called A and B, that look like...
Motion Sensor with Raspberry Pi and MPU6050 - Part 1
This blog will help you build your own, low cost 3-axis motion sensor using Raspberry Pi and Invensense MPU6050.
Basic Sensors for an Autonomous Vehicle
The following are a few basic sensors that can be used to help an autonomous vehicle navigate its environment.
The faster the vehicle is traveling, the faster the sensor must be processed.
Moving vehicles could knock something over or cause damage to a person or object if it collides with them.
Drop-off and line sensors function better when mounted to the front of the vehicle.
Drop-off and collision sensors should be mounted front and rear, if your vehicle can back up.
Getting Started With Zephyr: Using GDB To Fix a Driver Bug
In this blog post, I show how to use GDB to debug an issue encountered with a TSL2591 light sensor driver in Zephyr. The fix was submitted and successfully incorporated into The Zephyr Project.
Video-Based STEM Embedded Systems Curriculum, Part 2
Contents:
- Introduction
- Lesson Plan 1: Introducing Arduino
- Lesson Plan 2: Circuit Drawings With Fritzing
- Lesson Plan 3: Basic Electronics
- Coming Soon
This post continues from part 1. It contains the first three lesson plans.
Lesson Plan 1: Introducing ArduinoThis lesson is first because Arduino is the simplest programming environment, yet allows lots of interaction with hardware. In...
