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15 votes
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How can I make a precise one-way clutch using Technic elements?

Would this solve your problem? Depending on the direction of the input, only one axle will turn.
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14 votes

NXT Brick will not update firmware (clicking brick syndrome)

I just got an e-mail from LEGO that was the real fix: Make sure the NXT brick is unplugged from the computer and take the battery or batteries out. On the fourth battery holder down from the ...
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10 votes
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Programming Mindstorms on a chromebook

Update Dec 2016 There is now an app for chromebooks on the chrome store: https://chrome.google.com/webstore/detail/lego-mindstorms-education/jhnhfnolmcleankdkhfklakpchnccipg?hl=en-US I have used it ...
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8 votes
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List of parts to buy for to "upgrade" existing Mindstorms NXT 1.0 to Mindstorms EV3 set?

I don't know of such a list, but you can find the inventory for the EV3 on Bricklink and other similar sites. However, it would be more economical to buy an entire EV3 set. The 31313 retail set is ...
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8 votes

LEGO Mindstorms 9797 (NXT Education base set) Software Download

I contacted Lego and they gave me this link for a PC: https://fileshare.corp.lego.com/node_share_links/119233?token=7a9527d5-cd94-491c-88b3-689587eae5ae I don't have the link for a Mac, but you can ...
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7 votes
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How much does the NXT brick weigh?

Without batteries installed, the NXT brick weighs 159.3 grams, so that's about 0.351 pounds. Do take into account the added weight of what ever batteries you have installed, though, as that will ...
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7 votes

Lego Mindstorms EV3: programming language recommendation

In general, would you recommend switching to a normal programming language (I am quite "fluent" in languages like C/C++, Python and Java) in order to avoid having to use blocks when building more ...
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7 votes

Does LEGO no longer support NXT 2.0 at all?

LEGO officially stopped supporting NXT in 2015, however, as of 2019, the original NXT programming software is still available on the official LEGO MINDSTORMS web page. The original NXT programming ...
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6 votes

How to locate objects, and move towards them, without pre-programming the path

If the ultrasonic cannot echo-locate the objects because they're too small, even with the sensor suspended very close to the floor, I suggest using a very sensitive feeler out front. It can be ...
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5 votes

Are NXT Light sensors compatible with EV3?

NXT Color Sensors are supported directly by EV3-G, the EV3 software running on the PC or MAC. NXT Light Sensors are not. To use Light sensors requires a bit of trickery. EV3-G has a Raw Sensor block ...
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5 votes
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Is there a time mechanism that can be added to an NXT program?

To get the actual time of day, you can use the mindsensors.com Realtime Clock Sensor.
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5 votes
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What is NXT-G number format?

The NXT actually uses IEEE 794 32-bit floating point number format in little endian byte order. I like using this site for conversions. So, to decode your messages: TX: 00 09 00 05 60 EA 00 00 00 ...
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5 votes

LEGO Mindstorms 9797 (NXT Education base set) Software Download

As of 2021, the retail version of the NXT software is still available for download from the official LEGO MINDSTORMS download page (near the bottom of the page). The Education version of the software ...
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5 votes
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Uses for tracks in 9648

My FIRST LEGO League team likes to use them as clothing accessories, like belts, headbands, sashes, etc. More commonly, though, they are used for conveyor belts (for example, in a great ball ...
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5 votes

Does LEGO no longer support NXT 2.0 at all?

The NXT is no longer for sale by Lego, and I don't think they offer technical support for the NXT platform anymore. However, the EV3 software does support NXT. If you can't connect the software to the ...
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5 votes
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Lego RCX to NXT converter cables not working properly with EV3

These cable don't have anything connected to pins 5 or 6. This causes the software running on the EV3 that detects which type of motor is connected to think that there is nothing connected. Since it ...
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4 votes

Is there any other way to program the Lego Mindstorms NXT other than the provided software?

I started coding using NXT software and later EV3 and lately I have switched to java using leJOS. EV3 software ( and NXT ) is great for quickly hacking your ideas but when things get ugly the ...
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4 votes
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NXT or EV3 gyro sensor

LEGO doesn't make a gyro sensor for NXT, but Hitechnic sells a gyro third party product and Mindsensors has a combo gyro/accelerometer/compass (IMU). Both can be used with EV3, and LEGO also has a ...
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4 votes
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Mindstorms Software Versions

You probably don't need it, but the LEGO Education NXT 2.1 Software is still for sale through LEGO Education (at least in the USA). They do not advertise and upgrade price, but it does not hurt to ask....
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4 votes
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fgetc() moves pointer one step forward

The most basic solution would be to store the character read by fgetc, for example, instead of: if(!isspace(fgetc(handle))) you'd write: char val = fgetc(handle); if(!isspace(val)) This way if the ...
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4 votes

Programming/running a NXT brick with a dead screen, via PC?

There is a tool called NeXTScreen that is available here that will let you see the screen (and remotely control the NXT). There are similar tools for OS X and Linux on the same page. Once you have ...
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4 votes

How to use the ultrasonic sensor on mindstorm NXT

It's a little unclear from your question where this is currently failing, but I do see a couple issues with your code. 1. Your if blocks are probably not doing what you expect. You should include ...
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  • 34k
4 votes

NXT software on Windows 10 isn't detecting NXT brick

You need a newer version of the Lego Fantom Driver. You can download it here as part of the whole software kit: https://education.lego.com/en-us/downloads/retiredproducts/nxt/software If you want JUST ...
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3 votes
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LEGO Mindstorms NXT projects

I think your "obvious" answer is right. Given that you have a background in computer science and math, I'm certain you will be pleasantly surprised how fast you can go beyond connecting dots and come ...
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  • 166
3 votes
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Is it possible to add block to the on-brick "NXT Program" menu?

There is a piece of software called ICON (archived copy) which runs on the NXT and allows you to create programs on the NXT with many more commands than the built-in NXT programmer.
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3 votes

Installing Linux on my NXT

There is no Linux firmware for the NXT. The NXT has very limited resources, so running Linux is probably not a possibility.
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3 votes
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Did all the nxt 2.0 lego content vanish from the Lego website?

There is still some NXT stuff on the LEGO website. It is just hidden a little bit. Go to the new Mindstorms website and click on downloads. Then look for the arrows at the top left of the Download ...
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3 votes

What are all the third party (unofficial) accessories I can get for an NXT

There's lots of third party SENSORS to attach (see very helpful list from Philo), but I found it hard to find any info on third party MOTORS to connect to EV3. Pretty much only the mindsensors.com ...
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3 votes

How to control a RCX from a Mindstorms NXT

I know this is 3 and a half years late, but I figured I'd throw in my two cents. Attach an NXT light sensor and an RCX light sensor facing into each other. You can communicate bi-directionally by ...
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3 votes
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How to build an automatic Lego train system?

I think I'd use the ultrasound sensor instead of the touch sensor (or the brightness sensor with the light turned on in a dark tunnel). I haven't tried this but I'd worry about the touch sensor ...
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