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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 steering mechanism and how to make a remote-...
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47 views

Confusion with error symbol and coding

I am making a colour sorter robot. However, when I'm trying to detect colour with the colour sensor it displays an error message. The error symbols look like ev3 programming blocks and then an ...
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36 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
703 views

Complete set of 2004 Knights Kingdom card images?

Back in 2004 LEGO released a Knights Kingdom line of sets with trading cards for a trading card game. Those trading cards had some pictures and story information on them. I was able to find pictures ...
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54 views

Where do I get PDF instructions for LEGO builds that were only in software, like NXT as of 2019?

LEGO Mindstorms NXT 2.0 (8547) stored almost all of its build instructions in the associated software. LEGO no longer supports the software for modern macOS versions. I can not find build instructions ...
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19 views

Do you need multiple start blocks rather than just multiple wires from one start block?

Using the Chromebook app I cannot have multiple "wires" from the start block to multiple sections of code blocks. I have to use a start block for each section. When I try to drag a wire it only ...
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0answers
63 views

Cutting Lego-compatible studs, +-axle holes?

TL;DR: Advice on how to machine/refine studs and +-axle holes on home made Lego-compatible parts. I've been really enjoying designing and 3D-printing my own Lego-compatible custom parts to supplement ...
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20 views

changing ev3p file back into an ev3 project file

how do I change an ev3p file into an ev3 project file. Everytime that I click on the ev3p file to open it, it turns up as text in notepad.
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63 views

City miniature for IoT (sensors etc.)

I was looking for a way to build a mini city (scale around 1/35) in a way that would be rather realistic. The objective is to present it on a 1.5m x 1.5m table, where we would simulate some sensors ...
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53 views

The HiTechnic Color sensor is not detected in the port view in lab view

When I inserted the HiTechnic Color Sensor Block into the Ev3, the Ev3 detected the color sensor. But in my Mindstorms lab view, the HiTechnic color sensor does not appear on the port control. Can ...
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83 views

Is there any software except SR 3D Builder with the ability to simulate the interaction of gears that doesn't require scripting?

I'm aware that one can do that in LDCad but with scripting. Should I invest my time in learning SR 3D Builder or is there any other option? It's just not a very intuitive software for me but I might ...
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48 views

EV3 Brick is Stuck on Red

The EV3 brick started by flashing red. Then started where it is stuck on two red buttons. Have changed batteries, and manual reset with no change.
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52 views

Using switch block with Hitechnic color block

Can I compare the Hitechnic block --> measure --> color output in a switch block? For example, if the Hitechnic color sensor is seeing black, then do something, else do another thing. If not, then how ...
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298 views

LEGO set database with box dimensions

I've been looking around the BrickLink and Rebrickable databases for comprehensive and accurate box dimensions (width, height, depth.) BL's data is questionable and incomplete and RB doesn't have any. ...
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2answers
759 views

Is EV3 Device Manager still active?

Link to https://ev3manager.education.lego.com/ is broken - will this be fixed?
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0answers
342 views

EV3 low battery communicate right after startup

I just bought an EV3 and started having battery problems. I am using 6 NiMH 1.5V batteries for my EV3. They lasted for around 10 minutes of work and went flat (that's what the EV3 kept saying but the ...
-1
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1answer
18 views

Fiery hair/head

I thought I saw a head with flames on it. (Maybe it was a hair piece?). I looked for 'flame' and 'fire' on BrickLink but couldn't find it. Here's a custom minifigure that may be using the hair piece ...
-1
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1answer
287 views

Can you print a LEGO Powered Up connector with a 3D printer?

Has anyone ever printed a LEGO Powered Up connector with a 3D printer? Currently, I'm using a modified SATA adapter for some LED lights on my train.

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