Ryan Mitchell

If your robot jitters, overshoots, or refuses to reach its target position, the problem usually comes down to PID controller tuning. I’ve spent years helping robotics teams and hobbyists get smooth, reliable motion from their motors, and the same handful of mistakes show up every time. PID stands for Proportional, Integral, Derivative. It’s a feedback … Read more

A PID controller is the workhorse of modern robotics. I have used PID loops to stabilize quadcopters, control robotic arm joints, and regulate motor speeds on autonomous vehicles. If you work with any system that needs precise control, understanding PID is essential. In this complete guide, I will break down what a PID controller is, … Read more

Building a robot that stands on two wheels is one of the most rewarding projects in robotics. It combines physics, electronics, programming, and mechanical design into a single challenge that teaches you how real control systems work. I have spent years building and tuning self-balancing robots, and in this guide I will walk you through … Read more

You program your robot to drive straight, and it curves to the left. You adjust the code, and now it veers right. If you have spent hours trying to figure out why does my robot drift when driving straight, you are not alone. This is one of the most common problems in robotics, affecting everyone … Read more

If your robot’s encoders glitch, sensors throw random values, or serial communications drop packets the moment a motor starts spinning, you are looking at an electrical noise problem. Over the past few years, our team has built and torn down more than forty robots across hobby, research, and industrial settings, and we have learned the … Read more

Frame flex is the silent killer of robot performance. You spend weeks tuning PID loops, calibrating sensors, and perfecting your navigation stack, only to discover your robot drifts, wobbles, or veers off course because the chassis bends under load. If you have ever watched your autonomous robot miss its target by inches and suspected the … Read more

You power up your robot arm, quadcopter, or RC car, and the servo starts vibrating like it has a mind of its own. That rapid, nervous twitching is called servo jitter, and it is one of the most common problems hobbyists and engineers face with servo motors. I have spent years building Arduino and Raspberry … Read more

I have spent the last decade building robots and motor-driven gadgets, and I can tell you that nothing unlocks bidirectional motion quite like the H-bridge motor driver. An H-bridge motor driver is a circuit built from four switches arranged in an “H” shape that lets you reverse the polarity of the voltage applied to a … Read more

I have been building robots for over a decade, and the question I get most often is still the simplest: should I use aluminum or 3D printed parts for my robot chassis? It is a fair question, because the choice defines everything that follows. Your motor sizing, your battery budget, your fabrication timeline, even your … Read more

Every robot arm joint lives or dies by one number: torque. Get the calculation right, and your arm moves smoothly, lifts its payload, and runs for years without burning out a motor. Get it wrong, and you end up with a stalled joint, a smoking servo, or an arm that collapses under its own weight. … Read more