Build Your First Robot!
Unleash the power of RCX Technology

Step into the world of robotics with this 221-piece set from 2003. Perfect for budding engineers and LEGO enthusiasts!

🏛 RCX
Set #9786

Robo Technology Set [USB Cable]

The Robo Technology Set [USB Cable] is an innovative educational tool.

🏆 Best For: Ideal for teens and adults interested in learning basic robotics and programming concepts through LEGO. ⏱ 4.5 hr build 🧩 222 pcs
★★★☆☆ 3.8

Fans appreciate the set's historical significance and its ability to introduce basic robotics concepts. However, some find the technology outdated compared to modern LEGO robotics platforms, and the price is relatively high given the age and capabilities.

MSRP
$149.99
Best Price
$134.99
You Save
10% OFF
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📝 Our Take

The Robo Technology Set [USB Cable] is an innovative educational tool. Released in 2003 as part of the RCX theme, this set combines LEGO building with programmable robotics, allowing users to create and control their own creations using a USB connection.

This set is perfect for educators, tech enthusiasts, and LEGO builders interested in robotics. It offers a hands-on learning experience in programming and engineering principles, blending physical construction with digital control.

Skip this if you're looking for a modern, app-controlled robotics experience. Consider newer LEGO MINDSTORMS or SPIKE Prime sets for more advanced features and a wider range of sensors and motors.

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What programming language is used to control the robot in this set? How does this set compare to modern LEGO MINDSTORMS sets in terms of functionality? What are the limitations of the RCX brick compared to newer programmable bricks? Is the original software required to program this set still readily available?

🧱 Building Experience

🧩
222
Pieces
4.5h
Build Time
📊
Intermediate
Difficulty
Build Highlights:
  • Building and programming a functional robot using LEGO Technic elements.
  • Learning to use sensors and motors to create interactive behaviors.
  • Exploring the basics of computer programming and robotics control.
  • Connecting the robot to a computer via USB for programming and control.

📈 Investment Analysis

↑ Trending up since release
B
Investment Grade
⏳ Appreciating
The Robo Technology Set [USB Cable] presents a moderate investment opportunity. As a retired set from the early 2000s, it has a nostalgic appeal and represents an early foray into LEGO robotics. Its value is driven by its relative rarity and the increasing interest in STEM-focused LEGO sets. However, its investment potential is somewhat limited by the availability of newer, more advanced robotics sets. The rising price trend suggests increasing demand, but potential investors should be aware of the niche nature of this product and the competition from modern alternatives. The set's educational focus and the inclusion of electronic components contribute to its collectibility.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

Compare Similar Sets

Compared to modern LEGO MINDSTORMS sets, the Robo Technology Set [USB Cable] offers a simpler, more foundational introduction to robotics. While newer sets boast more advanced sensors, motors, and app-based control, this set provides a classic experience for those interested in the history of LEGO robotics. Consider modern MINDSTORMS sets for advanced features, but choose this set for its historical significance and unique building experience.

📦 Full Parts Inventory - 66 unique parts • 220 total pieces

Transmitter Tower, IR, USB Cable, with Black Front Transmitter Tower...
Part #: 23319c01 Dark Gray
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Plate Round 2 x 2...
Part #: 2654 Black
Technic Pin with Friction Ridges Lengthwise and Center Slots Technic Pin with ...
Part #: 2780 12× Black
Technic Wedge Belt Wheel Tire Technic Wedge Bel...
Part #: 2815 Black
Tyre 81.6 x 15 Motorcycle Tyre 81.6 x 15 Mo...
Part #: 2902 Black
Wheel 61.6 x 13.6 Motorcycle Wheel 61.6 x 13.6...
Part #: 2903 White
Sensor, Light with Fixed Cable Sensor, Light wit...
Part #: 2982c01 Blue
Brick 2 x 4 Brick 2 x 4
Part #: 3001 Red
Brick 2 x 2 Brick 2 x 2
Part #: 3003 Yellow
Dome Hemisphere 4 x 4 Multifaceted Dome Hemisphere 4...
Part #: 30208 Trans-Neon Green
Plate 1 x 2 Plate 1 x 2
Part #: 3023 Blue
Plate 6 x 12 Plate 6 x 12
Part #: 3028 Red
Technic Plate 2 x 6 [5 Holes] Technic Plate 2 x...
Part #: 32001 Blue
Technic Pin 3/4 Technic Pin 3/4
Part #: 32002 Dark Gray
Technic Axle Connector with Axle Hole Technic Axle Conn...
Part #: 32039 Light Gray
Technic Axle 2 Notched Technic Axle 2 No...
Part #: 32062 Black
Technic Brick 1 x 2 with Axle Hole Type 2 [X Opening] Technic Brick 1 x...
Part #: 32064b Green
Technic Axle 5 Technic Axle 5
Part #: 32073 Light Gray
Technic Bush 1/2 Smooth with Axle Hole Reduced Technic Bush 1/2 ...
Part #: 32123a Light Gray
Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Technic Beam 3 x ...
Part #: 32250 Blue
Plate 1 x 8 Plate 1 x 8
Part #: 3460 Blue
Wheel with Split Axle hole Wheel with Split ...
Part #: 3482 Yellow
Tyre Offset Tread 24 x 8 Tyre Offset Tread...
Part #: 3483 Black
Minifig Head Standard Grin Print [Blocked Open Stud] Minifig Head Stan...
Part #: 3626bpr0001 Yellow
Tyre 43 x 17 Tyre 43 x 17
Part #: 3634 Black
Technic Gear 8 Tooth Technic Gear 8 Tooth
Part #: 3647 Light Gray
Technic Gear 24 Tooth [New Style with Single Axle Hole] Technic Gear 24 T...
Part #: 3648b Red
Technic Gear 40 Tooth Technic Gear 40 T...
Part #: 3649 Green
Technic Pin without Friction Ridges Lengthwise Technic Pin witho...
Part #: 3673 12× Light Gray
Technic Brick 1 x 2 [1 Pin Hole] Technic Brick 1 x...
Part #: 3700 Blue
Technic Brick 1 x 4 [3 Pin Holes] Technic Brick 1 x...
Part #: 3701 Blue
Technic Brick 1 x 16 [15 Pin Holes] Technic Brick 1 x...
Part #: 3703 Black
Technic Brick 1 x 16 [15 Pin Holes] Technic Brick 1 x...
Part #: 3703 Blue
Technic Axle 4 Technic Axle 4
Part #: 3705 Black
Technic Axle 6 Technic Axle 6
Part #: 3706 Black
Technic Axle 8 Technic Axle 8
Part #: 3707 Black
Technic Axle 12 Technic Axle 12
Part #: 3708 Black
Technic Plate 2 x 4 [3 Holes] Technic Plate 2 x...
Part #: 3709 Yellow
Technic Bush Technic Bush
Part #: 3713 20× Light Gray
Technic Axle 10 Technic Axle 10
Part #: 3737 Black
Technic Plate 2 x 8 [7 Holes] Technic Plate 2 x...
Part #: 3738 Yellow
Technic Axle Pin without Friction Ridges Lengthwise Technic Axle Pin ...
Part #: 3749 Tan
Plate 2 x 10 Plate 2 x 10
Part #: 3832 Light Gray
Technic Brick 1 x 6 [5 Pin Holes] Technic Brick 1 x...
Part #: 3894 Blue
Technic Brick 1 x 12 [11 Pin Holes] Technic Brick 1 x...
Part #: 3895 Blue
Hair, Smooth Hair, Smooth
Part #: 3901 Brown
Bracket 2 x 2 - 2 x 2 Bracket 2 x 2 - 2...
Part #: 3956 Blue
Technic Wedge Belt Wheel [aka Pulley] Technic Wedge Bel...
Part #: 4185 Yellow
Technic Pin 1/2 Technic Pin 1/2
Part #: 4274 Light Gray
Technic Axle 3 Technic Axle 3
Part #: 4519 Light Gray
Wire with Brick 2 x 2 x 2/3 Pair, 20L Wire with Brick 2...
Part #: 5306bc020 Black
Wire with Brick 2 x 2 x 2/3 Pair, 36L Wire with Brick 2...
Part #: 5306bc036 Black
Light Brick 1 x 2 with Single Side Light Light Brick 1 x 2...
Part #: 6035 White
Hair Ponytail Hair Ponytail
Part #: 6093 Black
Technic Axle and Pin Connector Perpendicular Technic Axle and ...
Part #: 6536 Light Gray
Technic Axle Connector Ridged [with x Hole x Orientation] Technic Axle Conn...
Part #: 6538b Light Gray
Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Technic Axle 1.5 ...
Part #: 6553 Light Gray
Technic Axle 3 with Stud Technic Axle 3 wi...
Part #: 6587 Dark Gray
Motor, 9V Mini [Old Style] Motor, 9V Mini [O...
Part #: 71427c01 Light Gray
Hose, Ribbed 7mm D. 12L / 9.6cm Hose, Ribbed 7mm ...
Part #: 78c12 Purple
Technic Rubber Belt Medium [24mm ID] [Round Cross Section] Technic Rubber Be...
Part #: 85544 Blue
Sensor, Touch Sensor, Touch
Part #: 879 Light Gray
Hub, RCX 1.0, No Power Jack [Complete Assembly] Hub, RCX 1.0, No ...
Part #: 884b Yellow
Hips and Blue Legs Hips and Blue Legs
Part #: 970c28 Blue
Torso, White Arms, Yellow Hands [Plain] Torso, White Arms...
Part #: 973c27h01 White
🧱 Storage Bin Lid, ...
Part #: 71082 Trans-Clear
🧱 Storage Bin, Dact...
Part #: upn0038 Bright Green
This set includes a good selection of Technic pins and bushings, useful for building complex mechanisms. The blue rubber belts are also valuable for creating functional drive systems in MOCs.

🛒 Where to Buy

eBay
✓ In Stock
$134.99
Walmart
✓ In Stock
$142.49
Target
✓ In Stock
$149.99
Amazon

💎 Notable Parts

Black Technic Pin with Friction Ridges Lengthwise and Center Slots (12x) $1.20
Blue Technic Rubber Belt 24mm (4x) $1.00
Light Gray Technic Bush (20x) $1.00
Est. BrickLink Part Value
$3.20

💡 MOC Potential

🤖 Advanced humanoid robots with complex movements
🚗 Programmable rovers with obstacle avoidance
🌳 Automated plant watering systems

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Charts Inventory Statistics

67
Unique Parts
222
Total Pieces
0
Minifigures
Inventory Version: 3