Program Robots Like a Boss
In this tutorial I’ll show you how to compute the duration of a part of code in Arduino. The notion of time/duration is super important when you program, especially on embedded systems like Arduino. Writing a code that takes too much time, and not being able to know it, can lead to severe problems in … Read more
In this tutorial I’ll show you how to use a ROS AsyncSpinner with an example. You’ll see when using a roscpp AsyncSpinner is required, instead of the standard roscpp spinner. This tutorial could also be called: how to solve roscpp callback issues, when it seems that some callbacks are stuck or late. We’ll start by … Read more
In this tutorial I’ll show you how to create your own Arduino library. You’ll see, this might be much simpler than you thought! Very simply put, an Arduino library is a bunch of Cpp files that you have to organize in a certain way. Then you import it, use it, and that’s it. Creating an … Read more
This tutorial is the last post [4/4] of a series on how to create a ROS driver package. Make sure you have read the introduction [1/4] of this series, as well as either the Python ROS wrapper tutorial [2/4] or the Cpp ROS wrapper tutorial [3/4]. Let’s continue with the creation of your ROS driver … Read more
This Cpp ROS wrapper tutorial is the third post [3/4] of a series on how to create a ROS driver package. Make sure you have read the introduction [1/4] of this series, where I explain what is a ROS wrapper, and give some details about the driver we’ll use here. Part 2 shows you how … Read more
This Python ROS wrapper tutorial is the second post [2/4] of a series on how to create a ROS driver package. Make sure you have read the introduction [1/4] of this series, where I explain what is a ROS wrapper, and give some details about the driver we’ll use here. Note: after reading the introduction, … Read more
This is the first post [1/4] of a post series on how to create a ROS driver package. So, you have a piece of hardware, you wrote a driver for it, and now you want to interface it with ROS, in order to control it from the rest of your robotics application. In this post … Read more
In this tutorial I’ll show you how to write an Arduino String to the EEPROM memory, and then read it again. The EEPROM memory lets you save values on your Arduino board so you can retrieve them even after you reboot the board. This is very handy when you want to save some settings/data to … Read more
In this tutorial I’ll show you how to import a Python module from another package. ROS allows you to do that, and as you’ll see it’s quite simple. If you have a package which contains some common tools, helper functions, utils, or other stuff like that, you may want to be able to write the … Read more
In this tutorial I’ll show you how to communicate between a Raspberry Pi and an Arduino board via Serial communication. First, I’ll quickly explain what is Serial communication. Then you’ll see how to setup your hardware and software, and we’ll dive into the Python code (Cpp for Arduino). A basic example at first, leading to … Read more