The LEGO Group have advertised the EV3's excellent backwards compatibility with NXT.
As the cables are the same, the EV3 will work with NXT sensors, motors and, of course, LEGO Technic bricks. RCX sensors will work with the aid of converter cables.
Software designed for programming the NXT will not work for the EV3 as the NXT runs firmware, but the EV3 ...
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 top, there is a black rubber button. Using a paper clip, please press down and hold this
black rubber button for at least 20 seconds.
Put the batteries back ...
Update Dec 2016
There is now an app for chromebooks on the chrome store:
I have used it to program EV3 version of the bricks. It connects via bluetooth to the EV3 brick (I don't think USB is even supported). The bluetooth connection can be buggy ...
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 about $350 (USD). To buy just the EV3 brick, motors and sensors individually would be more than that.
EV3 Intelligent Brick - $190
EV3 Large Motor - $25 x 2
It doesn't seem to be possible. To quote mindsqualls' site:
MindSqualls is a .Net library for controlling a LEGO MINDSTORMS NXT or NXT 2.0 robot via either a Bluetooth- or an USB connection. It is written in C# and requires .Net v. 2.0 or newer.
Which means it allows you to control your NXT brick from the PC, and from the PC only. It does not offer any ...
To work properly, the Forward 5 block on the NXT as well as the Move block of NXT-G require that TWO motors be connected on ports B and C. That's probably the problem you see... To test a single motor, there is the motor block.
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 almost double the weight, and not all types of AA batteries weigh the same. If you're using a rechargeable battery, then for reference, the original NXT ...
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 complex programs?
Yes, especially if you plan on doing image processing.
If so, which programming language would you recommend? I feel like there is a big ...
I built the 3 to 4 multiplexer posted above (thank you for posting that) but was able to tweak it into a 2 to 4 mux. The axles that are connected to the large gears are used to select the outputs by rotating the large gears.
It ended up being too big for what I needed though so I went a different route and built a 2 to 4 multiplexer that uses a turntable ...
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 sticking forward like a jousting lance, and your robot can swivel back & forth while traveling to scan.
The trick to making it very sensitive is to:
(1) make it ...
Here we go. I was browsing around looking for answers when I stumbled upon this thread: https://discussions.apple.com/thread/4158314?start=0&tstart=0
One person mentioned Lego tech support sent him a link to an ISO. It looked like maybe it was a newer ISO than the one I was using, so I tried it: http://dl.dropbox.com/u/31950731/MINDSTORMS%20NXT%20Retail%...
The problem can be restated:
360 / 20 = 18 deg / sec = 1 deg / .056 sec
One degree is the smallest increment provided by the rotation sensors.
NXT-G has a timer sensor with 1/100th second resolution.
Set a motorPower variable to 10
Start a timer
Loop until rotationDegrees >= 360
If timeElapsed * 18 > rotationSensorDegrees
I just installed the retail version of NXT 2.0 (v2.0f6) on Mac OS 10.5.8 and got the error 1003 "a required file is broken" when first starting up the Mindstorms NXT application. Turns out this is a known bug when using the case-sensitive journaled filesystem. Mindstorm tech support walked me through the fix which was to rename the "/Library/Frameworks/...
The ultrasonic cannot detect the color of objects. It's just to detect the distance between the sensor and an object in it's line of sight.
To find objects in the surrounding area of your robot you have to look all around. This is simply done by rotating your robot or your sensor. When you measure a distance in a certain range (best results between aprox. ...
EV3 has no support for the Light Sensor, just the Color sensor. There is a Raw Sensor that can be used to create a Light Sensor MyBlock. That MyBlock can then be used to create the various WaitFor, Loop, and Switch blocks using the Logic form of those blocks.
Then there is the calibration problem. The Color Sensor block in calibration mode does not work ...
It sounds like you want to use the Ultrasonic sensor as a revolving radar dish. This is definitely possible. Note that because of the wire, you probably want the sensor to pan back and forth rather than go around in complete circles. Here's an example of what this could look like:
There are building instructions for this project available here:
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 that provides access to the Light sensor values. The raw sensor returns values from 0-1023, which is very different than the 0-100 of the NXT-G Light Sensor ...
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
Byte 0: 0x00 - response required
Byte 1: 0x09 - write message command
Byte 2: 0x00 - Mailbox 1
Byte 3: 0x05 - Message size of 5 bytes
Bytes 4-7: 0x60 0xEA ...
I contacted Lego and they gave me this link for a PC:
I don't have the link for a Mac, but you can ask Lego for it.
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 contraption). You can also use them for a chain drive when 3711 is not strong enough or big enough.
I also saw this recently where small carriages were attached to the ...
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 software and EV3 desktop programming software are both 32-bit, so cannot run on macOS 10.15.
The new EV3 programming software based on Scratch does not work ...
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 thinks nothing is connected, it periodically resets the output port which turns off the motor.
To work around this, the unregulated motor block needs to be ...
We had the same problem. The current version of the Kit ships with version 2.1 of the software which does not have the "remote control" item on the Tools menu.
We uninstalled this version, downloaded version 2.0 from the below link... and bam... the "remote control" option is there and it even works great through our laptop's Bluetooth connection.
It depends on which version you're talking about.
NXT 1.0 Light Sensor: This sensor should detect up to 100 shades from white(100) to black(0).
NXT compatible Hitechnic Color Sensor: This sensor will detect 17 colors including white(17) and black(0) or 100 shades from white(100) to black(0).
NXT 2.0 Color Sensor: This sensor can detect 6 colors including ...
As you say yourself, you want to detect the tilt of the pendulum rod, so I'm assuming what you're after is actually its angle. Measuring anything else would probably result in tedious calculations anyway; and in addition, considering you'll want to try to keep the angle in a specific range, you'll need to know it.
As such, an angle sensor may seems the most ...
As per This LEGO education FAQ, it is not possible to use the USB cable the same way it's done between multiple EV3 bricks:
Can I connect my NXT Intelligent Brick to the LEGO MINDSTORMS Education EV3 Intelligent Brick?
No. It is not possible to daisy chain with the NXT brick.
However, keep in mind this is valid within the scope of official software; it ...
I needed to update the firmware. 1.05 was too old. 1.31 works.
I did need to run the old NXT-G software to download the newer firmware. I did not try to download the firmware using EV3.