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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,...

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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...

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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...

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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...

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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...

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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...

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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...

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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...

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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...

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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...

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