2x Sensor Proportional Line Follower

This EV3 programming tutorial will teach you how to make a 2x Sensor Proportional Line Follower in EV3-G. This is a combination of two different line followers that I have previously made. This line follower preforms well in FIRST Lego League (FLL) Competition. 142 total views, no views today    Send article as PDF   

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Simple Line Following Using MyBlocks

Full Simple Line Following Code: Code to Measure the Reflected Light Levels: 108 total views, no views today    Send article as PDF   

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Convert Distance to Degrees of Wheel Rotation

This tool and EV3-G MyBlock Code can be used to easily convert your wheel/tire size information into useful data to be used by First Lego League (FLL) Robots. 385 total views, no views today    Send article as PDF   

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Simple Proportional Line Following Code

What Does Proportional Mean? A proportional control system measures the error (the difference between the system setpoint and the current state) in a system and then either increases or decreases the system output by enough to minimize the error. Proportional refers to the system’s ability to make small changes for small errors and large changes […]

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Calculating Wheel Movement for Accurate Turns

Overview: Two Types of Turns Calculating Rotations for Pivot Turns Equation for Calculating Pivot Turns Calculating Rotations for Point Turns Equation for Calculating Point Turns Relationships Between the Two Types of Turns Parting Thoughts Two Types of Turns: Pivot Turn – robot turns about a central point located at one of the wheels One wheel […]

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EV3-G Compare Block

Compare allows you to compare two numeric values with Equal To, Not Equal To, Greater Than, Greater Than or Equal To, Less Than, or Less Than or Equal To. Using the Math programming block and a Switch, you can set it up to have different reactions depending on the result. There is an example below. […]

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EV3-G Data Wires

Using data wires, you can change a block’s settings while a program is running (by using data from a new sensor reading, for example). Data wires are one of the most powerful EV3 programming features, and learning how to use them will open up many more possibilities for your programs. 333 total views, no views today […]

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EV3-G Variable Block

Variables let you store a value and use it later in the program. For example, say you want to take a sensor reading and then compare that reading to other sensor readings in the future. To do this, you would save the first sensor reading to a variable, which you could access later and compare […]

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ABS(x) Math Function with EV3-G

abs(x) returns ‘x‘ if x ≥ 0 and –x if x < 0. The result is always positive. Only Negative Value of Variable Only Positive Value of Variable 195 total views, 1 views today    Send article as PDF   

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EV3-G Compare Block

For the next program, you’ll use the Compare block to compare two numbers (see below). Let’s take a quick look at how this block works. The Compare block is on the Data Operations palette. You can supply the two Input values using data wires or by manually setting one or both of the parameters. The […]

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