Robot Inventor (51515-1) is a Mindstorms LEGO set released in 2020 with 949 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Mindstorms sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 145 unique part types.
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Building instructions
Official LEGO instructions — read on BrickID
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Parts in this set
145 parts · page 1 of 4 · updating…
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Antenna 8H Whip2569 · ×2 · Black -
Ball, Hard Plastic, 51mm (approx. 6 studs diameter)41250 · ×1 · Red -
Battery Pack, Rechargeable, Mindstorms Robot Inventor67704 · ×1 · Dark Turquoise -
Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end25214 · ×8 · Black -
Cable, USB, SPIKE / Mindstorms Robot Inventor39881 · ×1 · White -
Differential Gear - 28 Tooth with Round Axle Hole65413 · ×1 · Red -
Differential Gear House65414 · ×1 · Light Bluish Gray -
Dish 6 x 6 Inverted (Radar) with Solid Studs44375b · ×1 · White -
![Dish 8 x 8 Inverted [Radar], Solid Studs, Rounded Anti-stud Underside](https://cdn.rebrickable.com/media/parts/ldraw/3/3961.png)
Dish 8 x 8 Inverted [Radar], Solid Studs, Rounded Anti-stud Underside3961 · ×1 · Dark Turquoise -
Hose Rigid 3mm D. 8L / 6.4cm75c08 · ×2 · Light Bluish Gray -
Hub, Programmable, Mindstorms Robot Inventor67718 · ×1 · Dark Turquoise -
Large Figure Weapon, Barrel with 2 Pin Holes and 3 Axle Holes98585 · ×6 · Black -
Launcher, Brick Special 2 x 6 Spring Shooter with Light Bluish Gray Top49743c01 · ×2 · Dark Bluish Gray -
Motor, Medium Servo SPIKE54696 · ×4 · Light Bluish Gray -
Plate Special 2 x 2 with Pin on Bottom2476a · ×2 · Light Bluish Gray -
Projectile, Arrow with Shaft, Hollow Black Rubber End46537 · ×2 · Light Bluish Gray -
Projectile, Large Figure Weapon, Zamor Sphere / Ball54821 · ×1 · Red -
![Rubber Belt Small [15mm ID] [Round Cross Section]](https://cdn.rebrickable.com/media/parts/elements/4544140.jpg)
Rubber Belt Small [15mm ID] [Round Cross Section]85543 · ×2 · White -
Sensor, Color, SPIKE37308 · ×1 · White -
Sensor, Distance, SPIKE37316 · ×1 · White -
Sticker Sheet for Set 51515-173229 · ×1 · [No Color/Any Color] -
Technic Axle 123708 · ×2 · Black -
Technic Axle 2 Notched32062 · ×10 · Red -
Technic Axle 34519 · ×9 · Light Bluish Gray -
Technic Axle 3 with Stop24316 · ×12 · Reddish Brown -
Technic Axle 43705 · ×4 · Black -
Technic Axle 4 with Centre Stop99008 · ×2 · Tan -
Technic Axle 4 with Stop87083 · ×6 · Dark Bluish Gray -
Technic Axle 532073 · ×4 · Yellow -
Technic Axle 5 with Stop15462 · ×2 · Reddish Brown -
![Technic Axle 5.5 with Stop [Rounded Short End]](https://cdn.rebrickable.com/media/parts/elements/4508553.jpg)
Technic Axle 5.5 with Stop [Rounded Short End]59426 · ×2 · Dark Bluish Gray -
Technic Axle 63706 · ×2 · Red -
Technic Axle 744294 · ×4 · Light Bluish Gray -
Technic Axle 83707 · ×2 · Black -
Technic Axle 8 with Stop55013 · ×4 · Dark Bluish Gray -
Technic Axle 960485 · ×2 · Yellow -
Technic Axle and Pin Connector Angled #132013 · ×5 · White -
Technic Axle and Pin Connector Angled #2 - 180°32034 · ×1 · White -
Technic Axle and Pin Connector Angled #4 - 135°32192 · ×6 · White -
Technic Axle and Pin Connector Angled #5 - 112.5°32015 · ×2 · White -
Technic Axle and Pin Connector Angled #6 - 90°32014 · ×1 · Black -
Technic Axle and Pin Connector Perpendicular6536 · ×8 · Dark Turquoise -
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes42003 · ×4 · Dark Turquoise -
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole32184 · ×2 · Black -
Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole32184 · ×6 · Light Bluish Gray -
Technic Axle and Pin Connector Perpendicular Double32291 · ×8 · Black -
Technic Axle and Pin Connector Perpendicular Double 4L98989 · ×2 · Light Bluish Gray -
Technic Axle and Pin Connector Perpendicular Double Split41678 · ×4 · Black