View source for Lego Mindstorms NXT

{{Short description|Programmable robotics kit}}
{{Other uses|Mindstorm (disambiguation)}}
{{multiple issues|
{{Primary sources|date=July 2022}}
{{More footnotes needed|date=July 2022}}
}}
[[File:Lego NXT Logo.png|thumb|alt=Logo, with the word "mindstorms" on an orange background|Logo of Lego Mindstorms NXT]]
[[File:Lego Mindstorms Nxt-FLL.jpg|thumb|alt=A small robot on a floor|"Golf bot", a robot built with the NXT set]]

'''Lego Mindstorms NXT''' is a programmable [[robotics]] kit released by [[Lego]] on August 2, 2006.<ref>{{cite press release |url=http://www.lego.com/eng/info/default.asp?page=pressdetail&contentid=17278&countrycode=2057&yearcode=&archive=false |title=What's NXT? LEGO Group Unveils Lego Mindstorms NXT Robotics Toolset at Consumer Electronics Show |location=[[Las Vegas, Nevada|Las Vegas, NV]] |access-date=2007-09-17 |date=January 4, 2006 |publisher=[[The Lego Group]] |archive-url=https://web.archive.org/web/20090708131613/http://www.lego.com/eng/info/default.asp?page=pressdetail&contentid=17278&countrycode=2057&yearcode=&archive=false |archive-date=July 8, 2009 |url-status=dead }}</ref><ref>{{cite press release |url=http://www.lego.com/eng/info/default.asp?page=pressdetail&contentid=21257&countrycode=2057&yearcode=2006&archive=true |title=LEGO MINDSTORMS NXT Robotics Toolset Now Widely Available |location=[[New York City|New York, NY]] |access-date=July 3, 2022 |date=August 2, 2006 |publisher=[[The Lego Group]] |archive-url=https://web.archive.org/web/20060911025537/http://www.lego.com/eng/info/default.asp?page=pressdetail&contentid=21257&countrycode=2057&yearcode=2006&archive=true |archive-date=September 11, 2006 |url-status=dead }}</ref>{{Primary source inline|date=July 2022}} It replaced the [[Lego Mindstorms#Robotics Invention System|Robotics Invention System]], the first-generation [[Lego Mindstorms]] kit. The base kit ships in two versions: the retail version<ref>{{cite web|url=http://mindstorms.lego.com/Products/|title=8527Mindstorms NXT Kit|website=Mindstorms.lego.com|publisher=[[LEGO Group]]|access-date=2008-12-26|archive-date=2009-02-03|archive-url=https://web.archive.org/web/20090203224929/http://mindstorms.lego.com/Products/|url-status=dead}}</ref> and the education base set.<ref>{{cite web|url=http://education.lego.com/en-gb/products/mindstorms/9797/|title=Lego Mindstorms Education NXT Base Set|website=Education.lego.com|access-date=2011-09-30|archive-url=https://web.archive.org/web/20111210153002/http://education.lego.com/en-gb/products/mindstorms/9797/|archive-date=2011-12-10|url-status=dead}}</ref> It comes with the NXT-G programming software or the optional LabVIEW for Lego Mindstorms.<ref>{{Cite web |url=http://www.legoeducation.us/eng/product/ni_labview_for_lego_mindstorms_software/2257 |title=LEGO Education &#124; Products > Middle School > NI LabVIEW for LEGO MINDSTORMS Software |access-date=2011-11-16 |archive-date=2011-12-16 |archive-url=https://web.archive.org/web/20111216105420/http://www.legoeducation.us/eng/product/ni_labview_for_lego_mindstorms_software/2257 |url-status=dead }}</ref> A variety of unofficial languages exist, such as NXC, NBC, leJOS NXJ, and RobotC. A second-generation set, Lego Mindstorms NXT 2.0, was released on August 1, 2009, with a color sensor and other upgrades. The third-generation [[Lego Mindstorms EV3|EV3]] was released in September 2013.

== NXT Intelligent Brick ==
[[File:Lego Mindstorms NXT Kit.jpg|thumb|alt=Parts of the kit|Lego Mindstorms NXT Kit]]
[[File:Lego MindStorms NXT - Alpha Rex.jpg|thumb|alt=A humanoid robot|Robot built from the kit]]
The kit's main component is the NXT Intelligent Brick computer, which can accept input from up to four [[sensor]]s and control up to three [[electric motor|motors]] with a modified version of [[RJ12]] cables (similar to, but incompatible with, [[RJ11]] phone lines). The plastic pin to hold the cable in the socket is moved slightly to the right. The brick has a 100×64 pixel monochrome [[LCD]] and four buttons that can navigate a user interface with hierarchical menus. It has a 32-bit [[ARM7TDMI]]-core [[Atmel]] [[AT91SAM7]]S256 microcontroller with 256&nbsp;KB of FLASH memory and 64&nbsp;KB of RAM, an 8-bit [[Atmel AVR|Atmel AVR ATmega48]] microcontroller, and Bluetooth support. The kit has a [[Loudspeaker|speaker]], and can play sound files at sampling rates up to 8&nbsp;kHz. Power is supplied by 6 [[AA battery|AA batteries]] (1.5 V each) in the consumer version of the kit, and a rechargeable [[Li-Ion]] battery in the educational version. The brick is compatible with sensors and motors of its successor [[Lego Mindstorms EV3]].<ref>{{Cite web |date=2013-11-01 |title=Using EV3 software to run the NXT – LEGO Engineering |url=http://legoengineering.com/using-ev3-software-to-run-the-nxt/index.html |access-date=2024-08-05 |language=en-US}}</ref>

=== Development kits===
Lego has released [[open source]] firmware for the NXT Intelligent Brick and schematics for all hardware components.<ref>{{cite web | url = http://mindstorms.lego.com/Overview/NXTreme.aspx | title = All the tools to take your Lego Mindstorms NXT to the Extreme! | archive-url = https://web.archive.org/web/20091006202012/http://mindstorms.lego.com/Overview/NXTreme.aspx | archive-date = 6 October 2009 }}</ref>

Several developer kits are available with documentation for the NXT:
* Software Developer Kit (SDK), with information on host USB drivers, executable file format, and bytecode reference
* Hardware Developer Kit (HDK), with documentation and schematics for the NXT brick and sensors
* Bluetooth Developer Kit (BDK), documenting protocols used for Bluetooth communications

== Programming ==
{{further|Lego Mindstorms#Programming languages}}
Simple programs can be created using the menu on the NXT Intelligent Brick. More complicated programs and sound files can be downloaded with a USB port or Bluetooth. Files can be copied wirelessly between two NXT bricks, and some mobile phones can be used as a remote control. Up to three NXT bricks can communicate simultaneously via Bluetooth when user-created programs are run.

The kit's retail version includes software for writing programs that run on Windows and Mac OS personal computers. The software, based on [[National Instruments]] [[LabVIEW]], provides a visual programming language for writing simple programs and downloading them to the NXT Brick; instead of requiring users to write lines of code, they can use flowchart-like blocks to design their program.

{{glossary}}
{{term|1=NXT}}
{{defn|1=NXT-G v2.0 is a graphical programming environment that comes bundled with the NXT and can be used for real-world programming. The software can run a handful of parallel loops  or blend autonomous control with Bluetooth or other remote control. It supports virtual instruments for all Lego and most third-party sensors and components. Version 2.0 contains new challenges, a remote control, custom graphics and sound designers, and Lego color sensor support.<ref>{{Cite web|url=https://brickshelf.com/cgi-bin/gallery.cgi?f=191310|title=Brickshelf Gallery - Example code fragments|website=Brickshelf.com|access-date=3 July 2022}}</ref>}}
{{term|1=C# with Microsoft Robotics Developer Studio}}
{{defn|1=Free tools ([[Visual Studio Express]] in combination with the [[Robotics Developer Studio]]) enable programming the NXT using the [[C Sharp (programming language)|C#]] language.<ref name="coding4fun">{{Cite web|url=https://docs.microsoft.com/en-us/shows/|title=Shows|website=Docs.microsoft.com|access-date=3 July 2022}}</ref>}}
{{term|1=BricxCC, Next Byte Codes, Not eXactly C}}
{{defn|1=[[Bricx Command Center]] (BricxCC) is the [[integrated development environment]] (IDE) used to write, [[compiler|compile]], and edit NBC and NXC programs for the NXT. Also, as BricxCC was originally made for the [[Lego Mindstorms#RCX|RCX]], programs for it can be written using [[Not Quite C|NQC]] via BricxCC.
Different firmware versions can be flashed to the NXT using BricxCC. Next Byte Codes (NBC) is a simple [[open source]] language with an [[assembly language]] syntax that can be used to program the NXT brick. BricxCC also has the capability to [[Decompiler|decompile]] standard .rxe NXT executables to NBC. Not eXactly C (NXC) is a high-level [[open source]] language,<ref name="Not eXactly C">{{cite web|url=http://bricxcc.sourceforge.net/nxc/|title=Not eXactly C|website=Sourceforge.net}}</ref> similar to [[C (programming language)|C]] and built on the NBC compiler. It can be used to program the NXT brick. NXC is basically [[Not Quite C|NQC]] for the NXT.<ref name="bricxcc.sourceforge.net">{{cite web|url=http://bricxcc.sourceforge.net/nbc/|title=NBC – NeXT Byte Codes, Not eXactly C, and SuperPro C|website=Sourceforge.net}}</ref>}}
{{term|1=Robolab}}
{{defn|1=The newer programming environment originally used on the RCX programmable brick. Version 2.9 has been updated to program the NXT brick. Lego has announced that it will stop supporting Robolab, but Robolab 2.9 is still available.<ref>{{cite web|url=https://education.lego.com/en-us|title=Lego Education|website=Lego.com}}</ref>}}
{{term|1=RoboMind}}
{{defn|1=[[RoboMind]] is educational software to teach students about logic, programming and robotics. Scripts can be transferred to a [[Lego Mindstorms]] NXT robot for testing.<ref>{{cite web|url=http://robomind.net/en/docLego.html|title=RoboMind.net – Documentation > Lego Mindstorms NXT support|website=Robomind.net}}</ref>}}
{{term|1=Enchanting}}
{{defn|1=[[Enchanting (programming language)|Enchanting]] brings NXT programming to the Scratch IDE, designed by the Lifelong Kindergarten Group at MIT to make programming intuitive for young children.}}
{{term|1=ROBOTC}}
{{defn|1=A programming language based on [[C (programming language)|C]] for VEX, the VEX Cortex, [[FIRST Tech Challenge]], and [[Lego Mindstorms]]. ROBOTC allows the NXT to run programs quickly, and compresses files to accommodate a large number of programs.}}
{{term|1=NXTGCC}}
{{defn|1=A GCC toolchain for programming NXT firmware in C.}}
{{term|1=leJOS NXT}}
{{defn|1=[[leJOS]] NXJ is a high-level open source language based on [[Java (programming language)|Java]] that uses custom firmware.<ref name="auto">{{cite web|url=http://lejos.sourceforge.net/index.php|title=LeJOS, Java for Lego Mindstorms|first=Juan Antonio Breña|last=Moral|website=Sourceforge.net}}</ref>}}
{{term|1=nxtOSEK}}
{{defn|1=[[nxtOSEK]] can be used to write in C and [[C++]] with custom firmware.<ref name="sourceforge.net">{{cite web|url=http://lejos-osek.sourceforge.net/index.php|title=nxtOSEK|website=Sourceforge.net|date=9 January 2014 }}</ref>}}
{{term|1=ICON}}
{{defn|1=ICON can write files on the NXT itself.<ref>{{Cite web|url=http://www.teamhassenplug.org/NXT/ICON/|title=ICON|website=Teamhassenplug.org|access-date=3 July 2022}}</ref><ref>{{Cite web|url=http://www.teamhassenplug.org/|title=Team Hassenplug|website=Teamhassenplug.org|access-date=3 July 2022}}</ref>}}
{{term|1=MATLAB and Simulink}}
{{defn|1=[[MATLAB]] is a high-level programming language for numerical computing, data acquisition, and analysis. It can control Lego NXT robots over a [[Bluetooth]] serial port (serial port communication is part of the base functionality of MATLAB) or via [[USB]].<ref>{{Cite web|url=https://git.rwth-aachen.de/mindstorms/ev3-toolbox-matlab|title=mindstorms / ev3-toolbox-matlab · GitLab|website=Gi.rwth-aachen.de|access-date=3 July 2022}}</ref> (free & open-source). [[Simulink]] is a block-diagram environment for modeling and simulating dynamic systems. A user can design and simulate control algorithms and Lego systems, and program the Lego NXT or EV3.<ref>{{Cite web|url=https://www.mathworks.com/hardware-support.html|title=Search Hardware Support|website=Mathworks.com|access-date=3 July 2022}}</ref>}}
{{term|1=Lua}}
{{defn|1=plLua<ref name="auto4">{{Cite web|url=http://www.hempeldesigngroup.com/lego/pbLua/|title=pbLua Home Page|date=8 December 2008|archive-url=https://web.archive.org/web/20081208045027/http://www.hempeldesigngroup.com/lego/pbLua/ |access-date=3 July 2022|archive-date=2008-12-08 }}</ref> is a port of the [[Lua programming language]], a general-purpose scripting language, for Lego Mindstorms.}}
{{term|1=Ada}}
{{defn|1=A port of GNAT<ref name="auto1">{{Cite web |url=http://libre.adacore.com/libre/tools/mindstorms/ |title=Libre - Home > Tools > GNAT GPL for LEGO MINDSTORMS NXT – Ravenscar Edition |access-date=2009-06-24 |archive-date=2012-03-05 |archive-url=https://web.archive.org/web/20120305152716/http://libre.adacore.com/libre/tools/mindstorms/ |url-status=dead }}</ref> for the NXT. It relies on a dedicated run-time kernel based on the [[Ravenscar profile]] used on the [[Goce satellite]], allowing high-level Ada features to develop concurrent and real-time systems on the Mindstorms NXT.}}
{{term|1=URBI}}
{{defn|1=[[URBI]] is a parallel, event-driven language with interfaces to C++/Java and Matlab. It has a component architecture (UObject) for distribution. Urbi is compatible with many robots, including Nao (cf Robocup), Bioloid and Aibo.<ref name="gostai.com">{{cite web|url=http://www.gostai.com/nxt|archive-url=https://web.archive.org/web/20070430122133/http://www.gostai.com/nxt/|url-status=dead|archive-date=2007-04-30|title=Gostai|website=Gostai.com}}</ref>}}
{{term|1=FLL NXT Navigation}}
{{defn|1=FLL Nxt Navigation<ref name="auto2">{{Cite web |url=http://fllnxtnavigation.codeplex.com/ |title=FLL NXT Navigation - Home |access-date=2009-03-12 |archive-date=2016-03-04 |archive-url=https://web.archive.org/web/20160304040028/http://fllnxtnavigation.codeplex.com/ |url-status=dead }}</ref> is an open source program to aid navigation on the FLL competition table.  It uses NXT-G and .txt files to write programs.}}
{{term|1=Ruby-nxt}}
{{defn|1=Ruby-nxt<ref>{{Cite web|url=https://github.com/zuk/ruby-nxt|title=zuk/ruby-nxt|date=14 November 2020|access-date=3 July 2022|website=Github.com}}</ref> is a library to program the NXT for the [[Ruby (programming language)|Ruby]] programming language. The code is not compiled to a binary file (unlike other languages for the NXT), but is transmitted to the NXT via Bluetooth.}}
{{term|1=Robotics.NXT}}
{{defn|1=Robotics.NXT<ref name="auto3">{{Cite web|url=http://hackage.haskell.org/package/NXT|title=NXT|website=Hackage.haskell.org|access-date=3 July 2022}}</ref> is a [[Haskell (programming language)|Haskell]] interface to NXT over Bluetooth. It supports direct commands, messages and many sensors, and supports simple message-based control of an NXT brick via a remotely-executed program. Basic NXC code is included.}}
{{term|1=LibNXT}}
{{defn|1=LibNXT<ref>{{Cite web|url=https://code.google.com/archive/p/libnxt|title=Google Code Archive - Long-term storage for Google Code Project Hosting.|website=Code.google.com|access-date=3 July 2022}}</ref> is a utility library for talking to the Lego Mindstorms NXT intelligent brick at a relatively low level. It is targeted at platforms overlooked by official Lego Mindstorms NXT software (such as Linux), and works on any POSIX-compliant operating system where libusb 0.1 is supported. Windows support is also possible with libusb's win32 port.}}
{{term|1=C_NXT}}
{{defn|1=C_NXT<ref>{{Cite web|url=https://github.com/llllllllll/C_NXT|title=C_NXT|date=13 June 2016|access-date=3 July 2022|website=Github.com}}</ref> is a library for controlling the Lego NXT licensed under the [[GNU General Public License|GPLv2]]. It allows users to control a Lego NXT via Bluetooth from other C programs. The library, which runs on Linux, provides low-level control and high-level abstraction.}}
{{term|1=PyNXC}}
{{defn|1=PyNXC<ref>{{Cite web|url=https://code.google.com/archive/p/pynxc|title=Google Code Archive - Long-term storage for Google Code Project Hosting.|website=Code.google.com|access-date=3 July 2022}}</ref> is a project which converts [[Python (programming language)|Python]] code to Not Exactly C (NXC)<ref>{{Cite web|url=http://bricxcc.sourceforge.net/nbc/|title=NBC - NeXT Byte Codes, Not eXactly C, and SuperPro C|website=Bricxcc.sourceforge.net|access-date=3 July 2022}}</ref> to download to Lego Mindstorms robots.}}
{{term|1=NXT-Python}}
{{defn|1=NXT-Python<ref>{{Cite web|url=https://github.com/schodet/nxt-python|title=Schodet/nxt-python|date=18 June 2022|access-date=3 July 2022|website=Github.com}}</ref> is a Python module which communicates with the NXT via USB or Bluetooth. It supports commands and several aftermarket sensors.}}
{{term|1=LEGO Mindstorms EV3 Software}}
{{defn|1=The software which ships with the newer Mindstorms EV3 set can program the NXT.<ref>{{cite web |title=FAQs available for |url=https://education.lego.com/en-us/support/mindstorms-ev3/faqs#NXT%20Compatibility |website=Education.lego.com |access-date=7 December 2019 |language=en}}</ref>}}
{{term|1=Physical Etoys}}
{{defn|1=[[File:Auto PE.png|thumb|alt=Programming diagram|A Lego NXT car which avoids walls, implemented in Physical Etoys]]
[[Physical etoys|Physical Etoys]] is a visual programming system for electronic devices which supports direct and compiled modes.}}
{{term|1=C/C++ Interpreter Ch}}
[[Ch (computer programming)|Ch]] is a C/C++ interpreter running C/C++ code to control Lego NXT or EV3. No firmware upload/download or compilation is needed. A C/C++ code running in Ch can control a Lego NXT, EV3, or multiple of NXT/EV3.<ref>{{cite web|url=http://c-stem.ucdavis.edu/studio/ch-robot-controller/|title=UC Davis Center for Integrated Computing and STEM Education » Ch Robot Controller|website=Ucdavis.edu}}</ref>
{{glossary end}}

== {{anchor|Sensors and Actuators}}Sensors and actuators ==
The Lego Mindstorms NXT base kit includes:<ref>{{cite web|url=http://mindstorms.lego.com/eng/Overview/default.aspx|title=Home – LEGO MINDSTORMS® - LEGO.com – Mindstorms LEGO.com|website=Lego.com|access-date=2009-01-15|archive-date=2012-05-29|archive-url=https://web.archive.org/web/20120529013030/http://mindstorms.lego.com/eng/Overview/default.aspx|url-status=dead}}</ref>
* Three [[Servomechanism|servo]] motors with built-in [[reduction gear]] assemblies and internal optical [[rotary encoder]]s which sense their rotations within one degree of accuracy.<ref>{{cite web|url=http://mindstorms.lego.com/eng/Overview/Interactive_Servo_Motors.aspx|title=Home – LEGO MINDSTORMS® - LEGO.com – Mindstorms LEGO.com|website=Lego.com}}</ref>
* A [[tactile sensor|touch sensor]] detects whether it is pressed, has been bumped, or is released. The orange enter button and the gray right and left NXT buttons can be programmed as touch sensors. In the NXT-G programming software, a value of 0 is given when it is not pressed and a value of 1 is given if it is pressed.<ref>{{cite web|url=http://mindstorms.lego.com/eng/Overview/Touch_Sensor.aspx|title=Home – LEGO MINDSTORMS® - LEGO.com – Mindstorms LEGO.com|website=Lego.com|access-date=2009-01-15|archive-date=2012-02-17|archive-url=https://web.archive.org/web/20120217215501/http://mindstorms.lego.com/eng/Overview/Touch_Sensor.aspx|url-status=dead}}</ref>
* A [[photodetector|light sensor]] detects the light level in one direction, and includes an [[LED]] for illuminating an object. It can sense reflected light values with the built-in red LED, or ambient light. In the NXT-G programming software, it senses light on a scale of 0 to 100; 100 is very bright, and 0 is dark.<ref>{{cite web|url=http://mindstorms.lego.com/eng/Overview/Light_Sensor.aspx|title=Home – LEGO MINDSTORMS® - LEGO.com – Mindstorms LEGO.com|website=Lego.com}}</ref> If calibrated, the sensor can be used as a distance sensor.
* A sound sensor measures volume on a scale of 0 to 100; 100 is very loud, and 0 is silent.
* An [[ultrasound#Ultrasonic range finding|ultrasonic sensor]] can measure the distance from the sensor to something it is facing and detect movement. It can show distance in centimeters and inches. The maximum distance it can measure is {{convert|233|cm}}, with a precision of {{convert|3|cm}}. The sensor sends ultrasonic sound waves that bounce off an object ahead of it and then back, and senses the time it took.<ref>{{cite web|url=http://mindstorms.lego.com/eng/Overview/Ultrasonic_Sensor.aspx|title=Home – LEGO MINDSTORMS® - LEGO.com – Mindstorms LEGO.com|website=Lego.com}}</ref>

Other parts may be bought separately.<ref>{{cite web|url=http://mindstorms.lego.com/Products/Sensors/Default.aspx|title=Home – Lego Mindstroms - LEGO.com|website=Lego.com|access-date=2009-01-15|archive-date=2009-10-06|archive-url=https://web.archive.org/web/20091006194016/http://mindstorms.lego.com/Products/Sensors/Default.aspx|url-status=dead}}</ref> Third-party companies manufacture sensors such as a [[compass]], [[gyroscope]], [[infrared]] tracker, [[RFID]] reader and [[accelerometer]] sensors sold by Lego. The temperature sensor can measure in Celsius or Fahrenheit.

=== Connector ===
Sensors are connected to the NXT brick with a six-position [[modular connector]] with analog and digital interfaces. The analog interface is backward-compatible (using an adapter) with the older Robotics Invention System. The digital interface is capable of [[I2C|I<sup>2</sup>C]] and [[RS-485]] communication.
{| class="wikitable"
|+ NXT sensor interface pinout
! Pin !! Name !!Function !! Color || Pin number
|-
| 1 || ANALOG || Analog interface, +9V supply
|[[File:Wire white.svg|60px|Pin 1 – ANA]]<br /> White
| rowspan="6" | [[File:Rj25 connector.jpg|150px]]
|-
| 2 || GND || Ground
|[[File:Wire black.svg|60px|Pin 2 – GND]]<br /> Black
|-
| 3 || GND || Ground
|[[File:Wire red.svg|60px|Pin 3 – GND]]<br /> Red
|-
| 4 || IPOWERA || +4.3V supply
|[[File:Wire green.svg|60px|Pin 4 – IPOWERA]]<br /> Green
|-
| 5 || DIGIAI0 || I<sup>2</sup>C clock (SCL), RS-485 B
|[[File:Wire yellow.svg|60px|Pin 5 – DIGIAI0]]<br /> Yellow
|-
| 6 || DIGIAI1 || I<sup>2</sup>C data (SDA), RS-485 A
|[[File:Wire blue.svg|60px|Pin 6 – DIGIAI1]]<br /> Blue
|}

== NXT 2.0 ==
{{For|the wrestling television programme|WWE NXT}}
Lego Mindstorms NXT 2.0 is the second set in the [[Lego Mindstorms]] series, introduced on August 5, 2009, at the Lego Shop in the U.S. The set contains 619 pieces, including a sensor that can detect colors. It was followed by the [[Lego Mindstorms EV3]].<ref>{{cite web|url=https://www.pocket-lint.com/parenting/news/lego/93511-lego-mindstorms-nxt-2-0-launches|title=LEGO Mindstorms NXT 2.0 launches|website=Pocket-lint|date=November 6, 2018|access-date=January 28, 2009|first=Stuart|last=Miles}}</ref>

=== {{anchor|8547 Kit Features}}Features ===
[[File:==MultipleViews NXT Forklift==.jpg|thumb|alt=See caption|Model forklift constructed with the Lego Mindstorms NXT 2.0]]
* A sound editor for recording a sound and programming the NXT brick to play it.
* An image editor for downloading an image to the NXT brick to appear on the screen.

==== {{anchor|NXT Intelligent Brick|Sensors|Actuators}}NXT intelligent brick ====
* 32-bit [[Atmel]] [[AT91SAM7]]S256 main [[microcontroller]] (256&nbsp;KB [[flash memory]], 64&nbsp;KB [[RAM]])
* 8-bit Atmel [[Atmel AVR|ATmega48]] microcontroller @ 4&nbsp;MHz (4&nbsp;KB flash memory, 512 Bytes RAM)
* 100×64 pixel [[LCD]] screen
* Four [[RJ12]] input ports (ports 1–4)
* Three RJ12 output ports (ports A-C)
* USB port
* Bluetooth Class II V2.0
* Loudspeaker – 8&nbsp;kHz sound quality, 8-bit resolution, 2–16&nbsp;kHz sample rate
* Four push buttons to navigate menus and use in programs
* Powered by six AA batteries or the NXT rechargeable battery

== See also ==
* [[Braigo]] Braille Lego printer low-cost project
* [[Lego Mindstorms EV3]]
* [[Lego Mindstorms]]
* [[Robotics Invention System]]
* [[URBI]]
* [[Robotics suite]]
* [[Dexter Industries]] – Sensors for the Lego Mindstorms NXT
* [[FIRST Lego League]] – A competition with the Lego Mindstorms NXT robot
* [[Robot app store|RobotAppStore – Apps for Robots (including Lego Mindstorms NXT)]]
* [[Robots]]

==References==
{{Reflist}}

==External links==
{{Commons category|Lego Mindstorms NXT}}
* [https://web.archive.org/web/20161021002216/http://lego.edutech.com/ lego.Edutech.com], Official Lego Education partner
* [https://www.kickstarter.com/projects/fatcatlab/evb-replace-the-brain-of-your-lego-ev3-with-beagle/ external controller with open hardware beaglebone]
* [https://web.archive.org/web/20130617041200/http://programnxt.com/ Program NXT, help for programming your Lego Mindstorms NXT]
* [http://www.hitechnic.com/ HiTechnic.com], LEGO Certified Sensors for the Lego Mindstorms
* [http://www.mindsensors.com/ mindsensors.com], Sensors for the Lego Mindstorms NXT
* [https://trinfactor3.appspot.com/ Trinfactor3.com], Enables use of 32 analog sensors with 1 NXT
* [http://www.robojoy-club.com/e/challenge.php robojoy-club], NXT robot and program for beginner
* [http://www.legomindstormsnxtstore.blogspot.com Placing and Fitting Gears]
* [http://www.roberta-home.de/en Roberta], Educational Robotics
* [https://web.archive.org/web/20140316022444/http://www.masc2279.com/ Lego Mindstorms Community and Projects]
* [http://www.everysingletopic.com/read-this-review-before-you-buy-lego-mindstorms-ev3/ Read This Review Before You Buy Lego Mindstorms EV3]
* [http://nxtprograms.com/ Lego Mindstorms NXT and Lego Mindstorms NXT 2.0 Projects]
* [https://www.youtube.com/watch?v=zL0QnkQ6cSA The NXT 2.0 Shooterbot in action]

{{Lego}}
{{Robot kits}}

[[Category:Lego Mindstorms| ]]
[[Category:Lua (programming language)-scriptable hardware]]
[[Category:Robot kits]]
[[Category:Products introduced in 2006]]
[[Category:2006 in robotics]]