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The bare minimum robotics toolkit

If you’re into robotics, there are some things that are a must have. They help you do your thing efficiently. So here’s the list of things that is absolutely essential. 1. Multimeter When your circuits don’t work, you search for your multimeter. When things do work, you check if everything the current is withing the […]

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Simple motor driver circuit

Components used For this project, we’ll be using the following components: One L293D H Bridge One 7805 voltage regulator One 7812 voltage regulator Four capacitors, around 10uF Two DC motors The H-Bridge is the key component. To power this chip, we use the two voltage regulators. The 7805 is used for generating logic voltages (5V […]

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How servo motors work?

What is a servo? A servo is a small motor that you can position at any angle very accurately. It contains internal circuits that will automatically maintain that particular angle. However, you cannot do full revolutions with a servo. You are restricted to a certain range, usually from 180-270 degrees. Servos are very powerful for […]

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78xx voltage regulator

Without the 78xx ICs Different parts of a robot require different voltages. Motors usually run on high voltages, like 12V or 36V. Microcontrollers run on 3.3V or 5V. Electromagnets work on even greater voltages and currents. If you didn’t have the 78xx ICs, you’d have more batteries on your circuits. One for 5V, another for […]

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L293D: An H-Bridge

H-what? An H-Bridge is nothing but an electronic circuit. Using such a circuit, you can supply current in two directions. Thats it. The L293D is an H-Bridge with two possible outputs. Meaning, you can connect two things to it… and you can control the direction of current flow in both. Lets say you have a […]

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Robocup soccer rules for the Small Sized League (SSL)

What is robocup? The RoboCup Small Sized League is a team based competition. You must create a team of robots that can play soccer/football/whatever you call it. Your team will compete against another team of robots. There must be no human intervention during the match. Everything is autonomous. Everything depends on artificial intelligence. You might […]

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The secret to wininng (almost) any robotics competition

What? Planning to take part in some robotics event? Is it RoboCup? Or is it a national level competition at some technical festival? Whatever be the case, there is one secret to actually win pretty much any of those. And in this short post, I’ll tell you what it is. So here we go, the […]

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The three motors you’ll ever use in robotics

Robotics makes great use of motors. They rotate and do things you expect your robot to do. Pot a ball, hold a can or salute you! Here’s a list of three different types of motors that you’ll use when creating your robot. These three motors cover a HUGE variety of requirements: speed, torque, accuracy, etc. […]

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Identification tags in competitions

Vision based competitions require that you track robots and objects in real time. Whether its a ball or block that you need to place in the correct position, you need to identify the robot’s exact position and orientation to decide the timeline of events in the near future. Here are a few ways to efficiently […]

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Pulse Width Modulators

Pulse Width Modulators, also called PWMs, are relatively new in the world of electronics. Before PWMs, usually a variable resistance (a rheostat) was used to control the voltage applied to a motor, bulb, etc. But this was inefficient because energy was wasted. A PWM solves this problem. With it, you can apply analog voltages using […]

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