Control a Stepper Motor using an Arduino,

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Smartphone Controlled Arduino Rover.

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How to Build a Robot Line Follower without a Controller

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In this tutorial I will show you how to make a simple line follower robot. Normally these type of robots use microcontrollers and complex logic to track and follow line. But today I will be showing you how you can make a simple line follower without a microcontroller. Before we start making the robot, let’s understand what a line follower is and how it works. What is a Line Follower? Line Followers are Automated Guided Vehicles (AGVs). These robots follow a line (black or white) using some logic. They’re mostly used to carry material around inside a factory. A microcontroller is like a brain of the robot that can be programmed to add unique features. But we don’t really need any coding knowledge or fancy microcontrollers to make this particular robot. How does it works? A line follower is an array of Infrared (IR) sensors. These sensors have a set of IR LEDs and Photodiodes. The LEDs emit infrared light on a surface (floor) and the Photodiode receives reflected light. The a
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