Program Robots Like a Boss
WiringPi is a Cpp library for Raspberry Pi. With this library you can use many of the functionalities provided by the GPIO header: digital pins, SPI, I2C, UART, etc. Although there are many Python libraries for Raspberry Pi GPIOs, Cpp is quite a bit behind. Fortunately, there is WiringPi. In this post you’ll install WiringPi, … Read more
In this tutorial I’ll show you how to use and compile WiringPi in your ROS Cpp nodes, so you can talk to hardware devices from your ROS application. Make sure to read this introduction to WiringPi before if you don’t know the library well. The WiringPi library is a great tool for Raspberry Pi (4, … Read more
In this tutorial I’ll show you how to communicate between a Raspberry Pi 4 (also works with 3, 3B, 3B+) and an Arduino (Uno), using the SPI protocol. The Raspberry Pi will be configured as a master, and the Arduino as a slave. On Raspberry Pi we’ll use the WiringPi library inside a Cpp code … Read more
In this tutorial I’ll show you how to communicate between a Raspberry Pi 4 (also works with 3, 3B, 3B+) and an Arduino (Uno), using the I2C protocol. The Raspberry Pi will be configured as a master, and the Arduino as a slave. You’ll see how to setup the communication, read an write, thanks to … Read more
In this tutorial I’ll show you how to write a Cpp program with WiringPi on your Raspberry Pi board, to communicate with a sensor through I2C protocol. Make sure to read this introduction to WiringPi before if you don’t know the library well. We’ll just use the basic functionalities of the ADXL345 here: read acceleration … Read more
You’re programming with ROS, or are just getting started, and you wonder: should you use Python vs Cpp with ROS? Of course… It depends. But in this post I’ll try to go beyond this “it depends” answer, to give you some points on when to you use one language or the other. To this question, … Read more
In this tutorial I’ll show you how to use ROS Duration in your ROS code – for roscpp and rospy. Through several examples you’ll see some of the most common use cases where ROS Duration is useful. Also, for each example you’ll learn about the differences between the Python and Cpp implementation, which is sometimes … Read more
You want to create a nice robotics, electronics or domotic application and you wonder: when to use Arduino vs Raspberry Pi ? Could your application run with an Arduino board only, or a Raspberry Pi board only? Do you need both? In this post I’ll give you some tips on when to use each board. … Read more
Rqt graph is a very useful tool to see what’s going on in your ROS graph. It’s a GUI plugin from the Rqt tool suite. In this tutorial I’ll show you how to install and use it. What is rqt graph Rqt graph is a GUI plugin from the Rqt tool suite. With rqt graph … Read more
In this tutorial I’ll show you what is ROS rqt plot and how to use it efficiently, through some examples. What is rqt plot and what to do with it Rqt is a very useful ROS tool to help you during your ROS development. It’s based on the Qt framework and includes a lot of … Read more