How many pieces does the LEGO Robotics Invention System, Version 2.0 (3804-1) have?

The LEGO Robotics Invention System, Version 2.0 set (3804-1) contains 720 pieces. It was released in 2001 as part of the LEGO Mindstorms theme.

How can I find missing parts for LEGO set 3804-1?

On BrickMissing you can check which parts from the LEGO Robotics Invention System, Version 2.0 (3804-1) you already own. Add your LEGO collection and we'll show exactly which of the 720 pieces you're missing and which you already have.

Can I build the LEGO Robotics Invention System, Version 2.0 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 720 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Robotics Invention System, Version 2.0 from?

The LEGO Robotics Invention System, Version 2.0 (3804-1) belongs to the LEGO Mindstorms theme. You can browse all Mindstorms sets on BrickMissing to find more sets from this theme.

Robotics Invention System, Version 2.0

3804-1 Mindstorms 2001 720 parts 2.1% catalog rarity Intermediate

Robotics Invention System, Version 2.0 (3804-1) is a LEGO set with a listed count of 720 parts. Available inventory data is shown below.

Parts Inventory

🧱 720 parts

Showing the first 12 rows of the parts list (720 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Black	1×	Check price → View
Black	4×	Check price → View
Green	2×	€0,29 View at LEGO → View
Light Gray	8×	Check price → View
Black	2×	€0,07 View at LEGO → View
Black	8×	€0,48 View at LEGO → View
Black	24×	Check price → View
Black	2×	€0,38 View at LEGO → View
Light Gray	4×	Check price → View
Light Gray	2×	Check price → View
Light Gray	2×	Check price → View
Black	4×	Check price → View

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Catalog rarity

How common are the parts in Robotics Invention System, Version 2.0?

2.1%Low rarity

more commonless common

3 of 144 recorded part+color combinations appear in 3 or fewer sets in our catalog. This does not measure replacement availability or price.

Theme average

8.4%

All sets

6.7%

Least common in our catalog

Cable, Fiber Optics, Wide 25L / 20.0cm · Trans-Clear · only this set in our catalogCD-Rom, for 3804 [RIS v2.0] · Unknown · only this set in our catalogPlaymat, Test Mat for Mindstorms Robotic… · Unknown · only this set in our catalog

How we calculate this →