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61 search results found

Harvey Mk II: Improved quick EV3 robot build

  • 27 September 201827 September 2018
  • EV3
  • Challenge ideas
  • How to
Posted by John Burfoot
Harvey Mk II is an improved version of the ever-popular Harvester quick EV3 robot build that was published in 2013. This version features improved stability and has more LEGO connection holes for external attachments. Building instructions: […]

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Harvey Mk II: Improved quick EV3 robot build

  • EV3
  • Challenge ideas
  • How to

How to toggle a motor on/off with a touch sensor

  • 16 November 201716 November 2017
  • EV3
  • How to
Posted by Josep Fargas
Starting with a simple challenge involving a touch sensor and a motor, this learning sequence shows how to turn a motor on and off with a touch sensor using flow control structures that include: waits […]

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How to toggle a motor on/off with a touch sensor

  • EV3
  • How to

How to wait for more than one sensor condition

  • 19 October 201714 December 2017
  • EV3
  • How to
Posted by Josep Fargas
The Wait block is one of the simplest blocks in the EV3 Software, and provides one of the simplest flow control structures. Its basic function is to pause the execution of a program until a […]

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How to wait for more than one sensor condition

  • EV3
  • How to

Why doesn’t my robot drive straight?

  • 21 September 20173 May 2018
  • Cross-platform, EV3
  • How to
  • Pedagogy
Posted by Rob Torok
It seems reasonable to expect that when you program a robot to drive straight, it should just work. And, of course, this is what the Move Steering block in the EV3 Software is designed to do. The Move Steering block makes use of […]

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Why doesn’t my robot drive straight?

  • Cross-platform, EV3
  • How to
  • Pedagogy

How to export an EV3 data file (*.rdf) to Excel

  • 27 July 20177 September 2017
  • EV3
  • How to
Posted by Rob Torok
To open an EV3 data file (*.rdf) in Excel (or equivalent application), the trick is to convert it to a (*.csv) file using the the Tools > Export Datasets menu option in the EV3 Software. […]

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How to export an EV3 data file (*.rdf) to Excel

  • EV3
  • How to

Tilt-to-Drive Android App for WeDo 2.0

  • 22 February 201721 December 2017
  • WeDo
  • How to
Posted by Rex
I’ve created an Android app for controlling a LEGO WeDo 2.0 skid-steer car. It was made using the MIT App Inventor. I’ve posted the build instructions and app programming here in my blog.  

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Tilt-to-Drive Android App for WeDo 2.0

  • WeDo
  • How to

Light and Gryo Sensor Calibration

  • 25 January 20171 June 2017
  • EV3
  • How to
Posted by Benjamin
Some sensors need to be calibrated to make sure they work correctly. I’ve made an EV3 project to help my FIRST LEGO League teams calibrate their sensors and would like to make it available to […]

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Light and Gryo Sensor Calibration

  • EV3
  • How to

Rookie EV3 tip: Motor “On” mode

  • 10 August 20167 September 2017
  • Challenge ideas
  • How to
Posted by Seshan Brothers
One of the common misunderstandings when programming the EV3 is that if you turn the motor “On”, the robot will just start moving. This mini-challenge is to make beginners aware of what the “On” mode […]

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Rookie EV3 tip: Motor “On” mode

  • Challenge ideas
  • How to

To light or not to light

  • 7 July 201621 December 2017
  • EV3
  • How to
Posted by Josep Fargas
This article highlights one of the difficulties in using the legacy RCX lamp with MINDSTORMS EV3 platform and presents an approach for overcoming this difficulty. It also presents a strategy for synchronizing mutliple lamps with […]

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To light or not to light

  • EV3
  • How to

Running MINDSTORMS NXT on Mac OS X 10.10 Yosemite

  • 30 September 201513 February 2016
  • NXT
  • How to
Posted by Barbara Bratzel
As a number of Mac users have discovered to their chagrin that the MINDSTORMS NXT Software (NXT-G) crashes on Apple computers running OS X Yosemite. The issue seems to be a problem with loading the Flash […]

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Running MINDSTORMS NXT on Mac OS X 10.10 Yosemite

  • NXT
  • How to

How to reconnect a task split

  • 6 August 201521 December 2017
  • EV3
  • How to
Posted by Rob Torok
This article describes a method for “reconnecting” the separate paths of an EV3 program after a task split. It’s usually best to avoid task splits where possible, especially because of the risk of them leading […]

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How to reconnect a task split

  • EV3
  • How to

From sequential programming to state machines

  • 14 April 201514 December 2017
  • EV3
  • Challenge ideas
  • How to
Posted by Josep Fargas
In this unit, we will explore some common algorithms for line following in a very systematic way, starting with well known “sequential” approaches, and then contrasting these with a “state machine” approach. We will see […]

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From sequential programming to state machines

  • EV3
  • Challenge ideas
  • How to

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