Questions tagged [ev3]
EV3 is the current generation of LEGO MINDSTORMS, released in 2013.
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Strange blocks appeared in my program
In my Mindstorms program, I found these strange blocks. They appeared when I sent this program to my other PC on Windows 10, which is more powerful. They don't work and I can't change them. Mindstorms ...
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EV3 Folder not appearing on Windows
I am attempting to load a UF2 file into an EV3 robot, however when I plug everything in, nothing appears. Windows recognises that a device has been plugged in, and it even appears in the Device ...
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0answers
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EV3 motor port works in motor control but not in demo mode
I have a new EV3 set and tried running the Demo program on the initial build. Only the left motor turned, so the robot kept going in circles instead of going straight like its supposed to. When I ...
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43 views
EV3 square pattern motion
I'm trying to make my EV3 robot move in a square path, and an infinity path.
I've tried this code for a square path but it's not working.
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28 views
Infrared Sensor Activation Problems
I tried running my program that requires an infrared sensor, but it didn't work. I looked at the port view and I saw the infrared sensor. It was connected, the brick recognized it, but had a "---&...
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1answer
51 views
EV3 Gyro sensor is not working
I started using the EV3 Gyro for the first time in a few months, and it's not working. When I rotate the robot the output shown in the EV3-G port view stays at zero. In the rare case it registers some ...
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3answers
131 views
Distance Learning Mindstorms web-based software
I am a Technology education teacher from NJ and I use Lego Mindstorms for my 8th-grade robotics class. Since we are doing distance learning (teaching from home) my students have not been able to ...
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53 views
Why isn't the LEGO Mindstorms EV3 software compatible with OS X 10.9.5?
The download page said "Mac OS X 10.6 (Snow Leopard) or above" but when I downloaded the EV3 software, I couldn't open it because the installer said:
You have OS X 10.9.5. The application requires ...
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1answer
48 views
Is there a duplicate/copy paste function in Lego Mindstorms Ev3 programing?
I remember, when I first started out Lego Mindstorms, there was a copy and paste (duplicate) blocks function. I could highlight and right click the blocks then press on duplicate to make another copy ...
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4answers
492 views
How to prevent my connected axles from falling apart?
In my EV3 robot, I have two rear axles connected to each other using this part mounted like this:
[
The problem with this construction is that after a while of driving, the axles disconnect like ...
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0answers
55 views
SPIK3R can't even hold itself [closed]
The SPIK3R does not move properly. When I remove the legs and depend on the wheels it works like it should: goes forward when I make it go forward, and turns when I make it go backward. I did not make ...
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1answer
60 views
Error message when using loop index as an array index to get value in arrays
My program moves an ultrasonic sensor around 260 degrees and the values are recorded down in an array variable every 2 degrees it turns. It moves back and measure it 3 more times, storing each ...
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1answer
66 views
Is it okay to put rechargeable AA batteries into the EV3?
Is it really okay to put rechargeable AA batteries into the EV3 and continuously put them in after recharging them each time? Boring old one-use AA batteries are getting too expensive for me, and I ...
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0answers
44 views
EV3 menu tabs occasionally vanishing
When I say "EV3 menu tabs," I'm referring to this part:
And sometimes it disappears, just like the title says.
After testing the EV3, I concluded that there are certain circumstances where this ...
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2answers
122 views
How do you display multiple items at once on an EV3 screen?
I'm trying to make a program on the EV3 that will imitate the shutdown process.
At first, I wanted to make my life easier by naming the program "Shutting Down" and not interfere with the display in ...
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1answer
58 views
How do I remove programs from my Lego Mindstorms EV3 project?
The title says it all. But to be more specific, I find it annoying that I have to download one single program to the EV3 Brick but then all the others in the project end up in the brick too, therefore ...
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0answers
61 views
How to get Lego Mindstorms EV3 expansion set (45560) programmes in Scratch
I bought recently Mindstorms EV3 expansion set (45560) and found out that the available programs are written in old LabView-style programming language: https://le-www-live-s.legocdn.com/sc/media/files/...
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125 views
Given program for EV3 Race Car doesn't work, but why?
I have successfully built an EV3 Race Car with instructions from a fan-made book made by Laurens Valk. In the book, he tells how to make my blocks for the rack-and-pinion steering and how to make a ...
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107 views
Lego Mindstorms EV3 software being detected as Ransomware [closed]
While I was programming my EV3 robot on my Windows 10, the Lego Mindstorms software immediately closed, and then Bitdefender Antivirus said that it was some sort of Ransomware. It was Bitdefender that ...
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79 views
Lego Mindstorms Software: “Error code: 4”
After updating my EV3 Brick's firmware from V1.09E to V1.10E and reinstalling the Teacher Edition of the Lego Mindstorms EV3 software (even though I'm not a teacher), I decided to recover my Brick's ...
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1answer
87 views
EV3 screen stuck at starting after inserting MicroSD card
I followed the official guide to download microPython and flash it onto an empty MicroSD card (SanDisk Extreme Pro 32GB), but the EV3 screen is now stuck at "Starting" after I insert the MicroSD card. ...
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64 views
Bluetooth connection between EV3 brick and MacBook Pro fails after 2 seconds
As I was adviced, I searched for same questions before posting mine but although some are similar, I can't make their answer useful for my problem.
I have a Mindstorms EV3 Education brick and a ...
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1answer
817 views
Current LEGO Digital Designer download is missing a lot of parts [duplicate]
The current LDD download is missing a lot of bricks that were in version 1.3.11 before.
Such as, but not limited to:
EV3 motors, sensors and the main EV3 brick.
Does anyone have a solution/download ...
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0answers
46 views
How to use Myblock parameters on EV3? [closed]
How do I use them? What do they do? How do they work? I have no idea, and would like some information on them.
Thanks.
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1answer
54 views
Is it possible to use a switch with three conditionals and the color sensor to compare?
I am using an EV3 robot.
Is there a way to program it using a switch, or another way, to compare multiple colors?
The goal is to have the robot act as a car and use the color sensor to recognize ...
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1answer
55 views
EV3 program runs fine when connected to PC but does not respond when copied to the brick
I am building the race car mentioned in the LEGO Mindstorms discovery book using an EV3 brick.
The problem I am facing is that the driving program runs fine when the brick is connected to the PC via ...
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1answer
175 views
How can I upload .ev3 files to my brick under macOS Catalina
After updating my Mac to macOS Catalina I can no longer run the previous Mindstorms software. The new tool "Mindstorms Home" doesn't allow for opening .ev3 files and uploading them to the brick.
Does ...
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1answer
344 views
Is the LEGO Mindstorms Education (not Home, not Scratch based) Edition for Mac OS gone?
I am starting a robotics and programming club with some 9-12 year olds and for the past week I have been developing activities using my Windows version of LEGO Mindstorms (the education / teacher ...
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1answer
116 views
My Mindstorms Spik3r can't turn around
When I use the button for turning it just goes backwards. Why does this happen? I've checked the instructions and didn't find anything.
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0answers
111 views
How do I make a single arm double tap a piano key?
I am trying to make a Lego play piano from ev3, where I have connected two arms to a single motor on either side using Lego elements. Both the arms move counter clockwise to one another (if one plays ...
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1answer
60 views
EV3 software with large blocks
I can't seem to find a download for home or education version of EV3 software that has the large white blocks for either macos 10.13 or 10.15 on my imac.
Can someone help?
I currently have that ...
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29 views
Recover lost programs from EV3 brick [duplicate]
I saved all my Mindstorms EV3 programs in a pendrive,but now,the the pendrive has broken, so I lost all of my programs. But I have all programs inthe EV3 brick. Does someone know if I can recover my ...
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1answer
62 views
How to restart/reset a program automatically after stop block
I have a program that uses the colour sensor to progress that program. The colours are in a certain order. If the wrong colour is detected, the program stops.
I want to restart the program from the ...
3
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1answer
126 views
EV3 color sensor strangeness
I've run across something very strange with my color sensor when using multiple sensors and multiple nested loops for a sumobot. I have 4 separate loops continuously monitoring the "optical", "...
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1answer
85 views
LEGO EV3 Ultrasonic sensor missing from Home Edition programmer [duplicate]
I'll get straight to the point: When I open my LEGO MINDSTORMS EV3 Home Edition programmer and try to use an ultrasonic sensor, there is no option for it in any blocks. I don't even see any allusion ...
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1answer
56 views
How to make Spik3r move without the pincers moving
How do you make Spik3r move without the pincers moving as well? Seems like the legs are only controlled by the motor on port B, but the move tank and steer modules only allow for the use of 2 ports. ...
3
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1answer
96 views
Chromebook Lego Mindstorms EV3 trouble
I want to make a crane in LEGO Mindstorms EV3 and I've already downloaded the software but as you can see below some coding pieces here are not in the Chromebook version.
Should I download the ...
3
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1answer
195 views
Mindstorms EV3 unable to drive two motors simultaneously
Yesterday I had the basic driving robot with two large motors, but I could not get both motors running at the same time. I had the tank control programming block, with both motors set to 50% and when ...
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1answer
99 views
Port problem? Mindstorms EV3 brick doesn't detect sensor blocks
I've just bought a second hand Mindstorms EV3 home edition set but the ports aren't detecting any of the sensors just the motors.
When checking the ports on the EV3 brick it says "none". I've updated ...
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1answer
172 views
Is it possible to use EV3 MicroPython with Windows 7?
I have been trying to get python on my EV3 brick using an EV3 MicroPython SD card image as described on the Lego website. The EV3 brick seem fine with its new OS.
Instead my problems are at the ...
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1answer
92 views
What is the use of a single ultrasonic signal?
The EV3 ultrasonic sensor has an advanced mode that includes an option to use single or continuous sensing as described in the Help page:
You can choose whether the sensor sends a single ultrasonic ...
2
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1answer
82 views
Advanced mode in EV3 ultrasonic sensor
The EV3 Ultrasonic Sensor has an “Advanced mode" which measures either in centimeters or in inches. When exactly do you use this mode? Why doesn’t the sensor send just a single ultrasonic signal?
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1answer
280 views
Is the EV3RSTORM from Lego Mindstorms programmable using a real programming language? [duplicate]
I'm a software developer and Lego fan. I'll create a robot with Lego Mindstorms, but I'll like to know that the is EV3RSTORM is programable using a real programming language (Python, C#, JavaScript, ...
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0answers
95 views
Could Microsoft MakeCode be an alternative to the EV3 program?
Is it possible to use Microsoft MakeCode for the EV3 as an alternative to the widely used EV3 program by LEGO? What are the benefits and drawbacks?
3
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1answer
211 views
Is there a way to convert .ev3 files to .uf2 files?
I am using Lego Mindstorms EV3 Education Edition and I am wondering if there is a way to convert the default .ev3 files to .uf2 files
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1answer
95 views
Can you change the sensitivity of an EV3 Touch Sensor?
My son is making a LEGO pinball machine and is wondering if it is possible to increase the sensitivity of an Ev3 Touch Sensor as when a ball hits it? Or does he need to use Color Sensors?
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3answers
976 views
Does LEGO no longer support NXT 2.0 at all?
I am running Mac OS X 10.15 (Catalina) and the EV3 software can't detect my NXT 2.0 using USB.
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1answer
73 views
Is it possible to use multiple IR beacons on different channels to control EV3?
One IR beacon has very few buttons and I would like to buy additional beacons and use them simultaneously to be able to control more channels.
I can't find any information if this setup will work. ...
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1answer
44 views
Can the EV3 software program switch block take inputs?
Is it possible to input values into a switch block? For example, if I have a move steering block in switch statement, can I input a value for power from a math block outside the switch statement? If I ...
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53 views
Release date for New LEGO® MINDSTORMS® Education EV3 Classroom? [duplicate]
What is the release date for LEGO® MINDSTORMS® Education EV3 Classroom for New macOS (macOS 10.15 Catalina)?
