<h1>Robotics Invention System Upgrade Kit</h1><div class='tags floatleft'><a href='/sets/3803-1/Robotics-Invention-System-Upgrade-Kit'>3803-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Robotics Invention System Upgrade Kit

3803-1 Mindstorms 1.0 1999

©1999 LEGO Group

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3803: Robotics Invention System Upgrade Kit

3803-1 Mindstorms 1.0 1999

Pieces: 70
RRP: $25.00
PPP: 35.7c
Packaging: Box

Value new: ~$35.72
Notes: Upgrades version 1.0 to version 1.5. Contains V1.5 CD-Rom, User Guide, Constructopedia and Test Pad plus 65 extra LEGO elements.

Our community: 84 own this set, 105 want it

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<h1>RCX Programmable LEGO Brick</h1><div class='tags floatleft'><a href='/sets/9709-1/RCX-Programmable-LEGO-Brick'>9709-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

RCX Programmable LEGO Brick

9709-1 Mindstorms 1.0 1999

©1999 LEGO Group

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9709: RCX Programmable LEGO Brick

9709-1 Mindstorms 1.0 1999

9V Electric Rcx

Pieces: 1
RRP: $110.00
PPP: 11000.0c

Value new: ~$59.15
Value used: ~$7.71

Our community: 321 own this set, 129 want it

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<h1>Robotics Discovery Set</h1><div class='tags floatleft'><a href='/sets/9735-1/Robotics-Discovery-Set'>9735-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Robotics Discovery Set

9735-1 Mindstorms 1.0 1999

©1999 LEGO Group

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9735: Robotics Discovery Set

9735-1 Mindstorms 1.0 1999

9V Electric Electric Motor Multibuild Robot Sensor

Pieces: 390
RRP: $150.00
PPP: 38.5c
Instructions: Yes

Value new: ~$149.99
Value used: ~$80.00
Notes: Random set of the day on 27 Mar 2021

Our community: 411 own this set, 148 want it

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<h1>RCX Remote Control Unit</h1><div class='tags floatleft'><a href='/sets/9738-1/RCX-Remote-Control-Unit'>9738-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

RCX Remote Control Unit

9738-1 Mindstorms 1.0 1999

©1999 LEGO Group

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9738: RCX Remote Control Unit

9738-1 Mindstorms 1.0 1999

Electric Remote Control

Pieces: 1
RRP: $19.75
PPP: 1975.0c

Value new: ~$33.66
Value used: ~$10.05

Our community: 272 own this set, 110 want it

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<h1>Robotics Invention System 1.5</h1><div class='tags floatleft'><a href='/sets/9747-1/Robotics-Invention-System-1-5'>9747-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-5'>1.5</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Robotics Invention System 1.5

9747-1 Mindstorms 1.5 1999

©1999 LEGO Group

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9747: Robotics Invention System 1.5

9747-1 Mindstorms 1.5 1999

9V Cd Rom Electric Electric Motor Multibuild Playmat Rcx Robot Sensor

Pieces: 717
RRP: $200.00
PPP: 27.9c
Instructions: Yes

Value new: ~$181.59
Value used: ~$19.10
Notes: Random set of the day on 20 Dec 2018
Version 1.5.

Our community: 1255 own this set, 120 want it

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<h1>Droid Developer Kit</h1><div class='tags floatleft'><a href='/sets/9748-1/Droid-Developer-Kit'>9748-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-Star-Wars'>Star Wars</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Droid Developer Kit

9748-1 Mindstorms Star Wars 1999

©1999 LEGO Group

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9748: Droid Developer Kit

9748-1 Mindstorms Star Wars 1999

Cd Rom Droid Electric Electric Motor Large Scale Droid Micro Scout Control Brick Multibuild Original Trilogy Prequel Trilogy Sensor Star Wars The Phantom Menace

✭✭✭✭✩ 3.8 58 ratings 3 reviews

Pieces: 657
RRP: $100.00
PPP: 15.2c
Instructions: Yes

Value new: ~$137.28
Value used: ~$62.20

Our community: 2883 own this set, 490 want it

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<h1>Temperature Sensor</h1><div class='tags floatleft'><a href='/sets/9755-1/Temperature-Sensor'>9755-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Temperature Sensor

9755-1 Mindstorms 1.0 1999

©1999 LEGO Group

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9755: Temperature Sensor

9755-1 Mindstorms 1.0 1999

9V Electric Polybag Sensor

Pieces: 1
RRP: $24.00
PPP: 2400.0c
Packaging: Polybag

Value new: ~$3.99
Value used: ~$10.96

Our community: 128 own this set, 124 want it

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<h1>Rotation Sensor</h1><div class='tags floatleft'><a href='/sets/9756-1/Rotation-Sensor'>9756-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Rotation Sensor

9756-1 Mindstorms 1.0 1999

©1999 LEGO Group

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9756: Rotation Sensor

9756-1 Mindstorms 1.0 1999

9V Electric Sensor

Pieces: 1
RRP: $15.00
PPP: 1500.0c

Value new: ~$8.99
Value used: ~$5.82

Our community: 213 own this set, 120 want it

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<h1>Touch Sensor</h1><div class='tags floatleft'><a href='/sets/9757-1/Touch-Sensor'>9757-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Touch Sensor

9757-1 Mindstorms 1.0 1999

©1999 LEGO Group

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9757: Touch Sensor

9757-1 Mindstorms 1.0 1999

9V Electric Sensor

Pieces: 2
RRP: $11.00
PPP: 550.0c

Value new: ~$8.00
Value used: ~$6.99

Our community: 174 own this set, 110 want it

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<h1>Light Sensor</h1><div class='tags floatleft'><a href='/sets/9758-1/Light-Sensor'>9758-1</a> <a href='/sets/theme-Mindstorms'>Mindstorms</a> <a class='subtheme' href='/sets/subtheme-1-0'>1.0</a> <a class='year' href='/sets/theme-Mindstorms/year-1999'>1999</a> </div><div class='floatright'>©1999 LEGO Group</div>

Light Sensor

9758-1 Mindstorms 1.0 1999

©1999 LEGO Group

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9758: Light Sensor

9758-1 Mindstorms 1.0 1999

9V Electric Sensor

Pieces: 1
RRP: $19.75
PPP: 1975.0c

Value new: ~$4.99
Value used: ~$0.57
Notes: Available from Shop At Home 05/2004.

Our community: 204 own this set, 111 want it

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