How many pieces does the LEGO Robotics Discovery Set (9735-1) have?

The LEGO Robotics Discovery Set set (9735-1) contains 390 pieces. It was released in 1999 as part of the LEGO Mindstorms theme.

How can I find missing parts for LEGO set 9735-1?

On BrickMissing you can check which parts from the LEGO Robotics Discovery Set (9735-1) you already own. Add your LEGO collection and we'll show exactly which of the 390 pieces you're missing and which you already have.

Can I build the LEGO Robotics Discovery Set with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 390 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Robotics Discovery Set from?

The LEGO Robotics Discovery Set (9735-1) belongs to the LEGO Mindstorms theme. You can browse all Mindstorms sets on BrickMissing to find more sets from this theme.

Robotics Discovery Set

9735-1 Mindstorms 1999 390 parts 7.3% repair risk Intermediate

LEGO RCX 9735-1 Robotics Discovery Set focuses on Robotics Discovery Set as a buildable character or creature. Recognition comes from pose, face, silhouette and details that carry the subject's personality. That gives the model presence on the shelf.

Parts Inventory

🧱 390 parts

Part	Color	Qty	LEGO price each
Tile 1 x 4 with Groove 2431	Light Gray	4×	Check price → View
Wedge Plate 3 x 3 Cut Corner 2450	Light Bluish Gray	2×	€0,12 View at LEGO → View
Brick 2 x 6 2456	Black	2×	€0,29 View at LEGO → View
Tile Special 1 x 1 with Clip and Straight Tips 2555	Black	4×	Check price → View
Brick Round Corner 4 x 4 Full Brick 2577	Black	4×	Check price → View
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] 2654	Black	2×	€0,07 View at LEGO → View
Technic Brick 1 x 10 [9 Pin Holes] 2730	Black	4×	Check price → View
Technic Pin with Friction Ridges Lengthwise and Center Slots 2780	Black	13×	Check price → View
Technic Beam 1 x 4 Thin with Stud Connector 2825	Light Gray	2×	Check price → View
Technic Engine Crankshaft Center 2854	Light Gray	2×	Check price → View
Brick 2 x 4 3001	Black	10×	€0,22 View at LEGO → View
Brick 2 x 2 3003	Black	2×	€0,13 View at LEGO → View