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9841 LEGO Mindstorms NXT Intelligent Brick thumbnail image

9841 LEGO Mindstorms NXT Intelligent Brick
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9841 LEGO Mindstorms NXT Intelligent Brick
  • NXT Intelligent Brick thumbnail
  • NXT Intelligent Brick thumbnail

LEGO 9841 NXT Intelligent Brick is a Mindstorms set from 2006 currently valued at $331 for new and sealed sets. Originally retailing for $169.99, the set has gained 95% in value since retiring in January 2016, with annual appreciation averaging 6.37%. On the used market, values range from $29 to $36 based on condition.

Set Value (New/Sealed)

This chart represents the current new/sealed value of the set NXT Intelligent Brick since June 2018. High accuracy
LEGO 9841 NXT Intelligent Brick is a Mindstorms NXT set released in 2006, containing 1 piece. It includes the programmable NXT brick featuring a 32-bit ARM7 microprocessor with Bluetooth wireless communication and a USB 2.0 port. The unit provides 4 input ports for sensors and 3 output ports for motors, serving as the central controller for Mindstorms NXT robots. It is designed for use with the Mindstorms NXT system.

A new and sealed NXT Intelligent Brick is currently valued at around $331, with annual growth of approximately 6%, which is higher than other NXT sets. The average used price is $30 for those in good overall condition. Based on current trends, this set could be valued near $350 within the next year. The set was available for 99 months, from October 2007 to January 2016.
NXT Intelligent Brick is a rare LEGO set. We have not seen set 9841-1 available in good/new condition online or in retail stores for over 2 years. Given how hard it is to find, the estimated value in new condition of $330.66 may not reflect its true collectible worth.

For Sale (New/Sealed)

There are currently no new/sealed listings available for 9841 NXT Intelligent Brick at this time.
All regions

For Sale (Used)

 (US) Used - Mindstorms NXT Intelligent Brick 9841 Programmable Robot Controller Retired
$35.00

Sets in Mindstorms / NXT

8527 Mindstorms NXT

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 577
Availability Retired
8527 LEGO Mindstorms NXT
Retail $249.99
Value $431.78
Growth  +72.7%
Annual growth 2.6%

8529 Connector Cables for Mindstorms NXT

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 7
Availability Retired
8529 LEGO Connector Cables for Mindstorms NXT
Retail $9.99
Value $19.98
Growth  +100.0%
Annual growth 3.0%

8528 Converter Cables for Mindstorms NXT

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 3
Availability Retired
8528 LEGO Converter Cables for Mindstorms NXT
Retail $9.99
Value $34.06
Growth  +240.9%
Annual growth 9.2%

9798 Rechargeable Battery

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9798 LEGO Mindstorms NXT Rechargeable Battery
Retail $54.99
Value $59.35
Growth  +7.9%

9833-2 Transformer

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9833-2 LEGO Mindstorms NXT Transformer
Retail $23.99
Value $25.03
Growth  +4.3%
Annual growth 1.0%

9842 Interactive Servo Motor

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9842 LEGO Mindstorms NXT Interactive Servo Motor
Retail $24.99
Value $26.95
Growth  +7.8%
Annual growth 2.3%

9843 Touch Sensor

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9843 LEGO Mindstorms NXT Touch Sensor
Retail $24.99
Value $32.46
Growth  +29.9%
Annual growth 3.7%

9844 Light Sensor

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9844 LEGO Mindstorms NXT Light Sensor
Retail $24.99
Value $16.99

9845 Sound Sensor

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9845 LEGO Mindstorms NXT Sound Sensor
Retail $34.99
Value $58.32
Growth  +66.7%
Annual growth 4.9%

9846 Ultrasonic Sensor

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9846 LEGO Mindstorms NXT Ultrasonic Sensor
Retail $39.99
Value $45.92
Growth  +14.8%
Annual growth 1.3%

9847 Bluetooth Dongle

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
9847 LEGO Mindstorms NXT Bluetooth Dongle
Retail $32.50
Value $32.00

Compass Sensor for Mindstorms NXT

Theme / Subtheme Mindstorms / NXT
Year 2006
Pieces 1
Availability Retired
LEGO Compass Sensor for Mindstorms NXT
Retail $54.99
Value $74.08
Growth  +34.7%
Annual growth 3.7%

My Collection

NXT Intelligent Brick Reviews

21 reviews
4.8
Collectors
Investors
Brickipedia
“The NXT Intelligent Brick is fitted with seven output and input ports and one USB port, all fixed at the top and bottom of the brick. It is powered by six 1.5v AA or six rechargeable lithium batteries (which can be found in set 9798). This set features a 32-bit ARM7... More microprocessor, being controlled via four buttons on the top, under the display.”
Full review at brickipedia.fandom.com

About Mindstorms NXT

NXT was the second generation of LEGO Mindstorms, released in July 2006 to replace the RCX of 1998. At its centre is the NXT Intelligent Brick, a small computer that runs the robot and takes signals from touch, light, sound and ultrasonic sensors, with three servo motors that can count their own turns. Robots are programmed on a computer with NXT-G, a drag-and-drop language built on LabVIEW from National Instruments, and the brick can talk to a phone or computer over Bluetooth.

NXT consists of 30 sets that ran from 2006 to 2011. As of today, 8527 Mindstorms NXT is the most valuable NXT set with an estimated new/factory sealed value of $432.
Summary
Mindstorms NXT NXT Intelligent Brick set 9841 was released on October 24, 2007, retailing for $170, it has since been retired. New, unopened sets are valued at $331, used ones can be found for $30.
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The robot's "brain!

The all-new NXT Intelligent Brick, your robot’s “brain,” features a powerful 32-bit microprocessor and Flash memory, plus support for Bluetooth™ and USB 2.0! The NXT intelligent Brick includes:

32-bit ARM7 microprocessor.
Support for Bluetooth wireless communication.
1 USB 2.0 port.
4 input ports.
3 output ports.
Powered by 6 AA (1.5v) Batteries, not included, or lithium Rechargeable Battery (#9798), sold separately.
Up to three NXT Bricks can be connected at the same time; however, you can only communicate with one NXT Brick at a time.
This is the individual component, and does not include any sensors, motors, cords, software or other accessories; for the complete LEGO® MINDSTORMS® NXT set, please see item #8527 or #8547.
Description provided by LEGO©