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Yellow Diamond Error in EV3 Software

7 May 20197 May 2019
EV3
How To

Posted by Jim

One of my robotics teams recently ran across an error message and problem that I had never seen before. While they were rehearsing for a local robotics competition, their robot began to act “wacky”. I suggested […]

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Yellow Diamond Error in EV3 Software

EV3
How To

Harvey Mk II: Improved Quick EV3 Robot Build

27 September 20182 April 2019
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 20172 April 2019
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 20172 April 2019
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 20172 April 2019
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

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Cross-Platform (110) BOOST (7) EV3 (86) LabVIEW (26) Machines & Mechanisms (2) NXT (93) RCX (27) ROBOLAB (21) WeDo (47)

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