Proximity with two Bumpers built with Lego

Please see the disclaimer for more information.
Large Killough Platform Home Light Search
Proximity with two Bumpers
Step 1
Step 1
2 xBoat 2 x 2 Stud
Step 2
Step 2
2 xPlate 2 x 6
Step 3
Step 3
3 xBrick 2 x 4
2 xElectric Technic Mini-Motor 9v
1 xPlate 2 x 4
Step 4
Step 4
1 xBracket 2 x 2 - 2 x 2
1 xPlate 2 x 2
1 xPlate 2 x 4
Step 5
Step 5
2 xBrick 1 x 6
2 xElectric Touch Sensor Brick 3 x 2 (Complete Assembly Shortcut)
2 xPlate 2 x 3
Step 6
Step 6
2 xTechnic Axle 4
2 xTechnic Bush 1/2 Smooth
2 xTechnic Liftarm 3 x 3 L Shape
Step 7
Step 7
2 xElectric Brick 2 x 2 x 2/3 with Wire End
2 xTechnic Axle 3
2 xTechnic Bush 1/2 Smooth
Step 8
Step 8
4 xTechnic Bush 1/2 Smooth
2 xTechnic Liftarm 2 x 4 L Shape
2 xTechnic Liftarm 3 x 3 L Shape
Step 9
Step 9
2 xElectric Brick 2 x 2 x 2/3 with Wire End
Step 10
Step 10
4 xTechnic Brick 1 x 8 with Holes
Step 11
Step 11
2 xTechnic Axle 2
1 xTechnic Axle 6
2 xTechnic Bush
1 xTechnic Bush 1/2 Type I
1 xTechnic Bush 1/2 Type II
2 xTechnic Connector Locking
2 xTechnic Liftarm 1 x 11.5 Double Bent
Step 12
Step 12
2 xTechnic Axle 2
1 xTechnic Axle 8
2 xTechnic Bush
2 xTechnic Bush 1/2 Type II
2 xTechnic Connector Locking
2 xTechnic Liftarm 1 x 11.5 Double Bent
Step 13
Step 13
2 xTyre 17 x 43
2 xWheel Centre Large
Step 14
Step 14
4 xElectric Brick 2 x 2 x 2/3 with Wire End
1 xElectric Mindstorms RCX (Complete Assembly Shortcut)
Large Killough Platform Home Light Search
Markus Matern, February 2002