Arduino with L298N Let us see how we could integrate Arduino with the L298N which is our motor controller. Now, it you are unsure about why we need an L298N H bridge, here is some background information about this! With that being said, our sketch looks like this: 1/* 2* DC Motor Encoder Test Sketch 3* by Joesan …

DC Motor Speed Control with ROS We saw from the previous tutorial on how to measure the RPM of a DC Motor fitted with an encoder. In this tutorial, let us see how we could do a basic speed control using commands from a ROS node. Combined with what we learnt on how to use PID speed control algorithm let us put this all …

In this section, let us explore and understand this 17th century idea on how we could effectively do a speed control for the DC Motor, the PID Controller mechanism PID Control We will try to debunk a PID controller from a functional perspective and later on converge on the P, I and the D. The block diagram below shows …

DC Motor A DC Motor equipped with a built-in encoder is going to immensely help us in precisely controlling the speed at which the motor rotates. Let us go through the basics behind such an encoder and how it relates to the speed ot the motor. In this tutorial, we will look at how to do speed control using a DC Motor …

I have been a happy user of the Travis CI free usage over the last couple of years. But one announcement recently made me deeply worried. Have a look here at their announcement Yes, Travis CI will no longer be free for OSS projects. There is no point in blaming Travis CI for this but rather on those idiots who abused …

Pi with Arduino Let us see how we could set up the ROS serial communication between a Raspberry Pi and an Arduino board. So, our very first integration attempt is to integrate the Raspberry Pi with Arduino. We will use the Raspberry Pi 4. Let us break this down into the following steps: ROS on the Raspberry Pi 4 …

It is a good practice to write integration unit tests for your services and integrate them in your CI workflow. Such integration tests boosts the confidence of your application quality especially when it needs to be deployed in an environment where it has to talk to numerous other external services. In this regard, I …

I could not say this more than what the title says. I had a very severe blow to my already damaged left knee. First a bit of history here and here. It was on the 28th of September where I went for my first ever defensive sport training called "VingTsun". Inspired by my Physio friend who is a beginner, I …

Recently, I can say that I made very good progress playing across the neck of my guitar. I memorized few pentatonic shapes, but I was stuck the whole while on those specific boxes. The whole thing did not make any sense to me. Just wandering within those boxes is not pleasant music. Frustrated, I looked at Youtube for …

I have been using a Mac for over 7 years now, I have used about 3 Mac's where the 3rd one is still working fine. I have kids at home, they feed food to it and because of that the keys on my Mac is out of order. So it was time for me to have some privacy and get one machine for myself. Looking around the latest …