Post on 17-Aug-2021
DrawbridgeGUARD AND PROTECT! How do you defend a castle? Pull up the drawbridge! Only lower it for those you know and trust. Use a motion sensor to control when your bridge will be lowered.
Red 2x6Brick
Red 2x6Brick
Green Round Brick
Green Round Brick
Green Round Brick
Green Round Brick
Grey 8x16Brick
Step 1You will Need:
Yellow 2x6 Brick
Crown Gear Bushing #3 Axle Motor
Step 2You will Need:
Pay attention to the direct ion of the teeth on the Crown Gear!
Step 3You will Need:
Red 1x8with Holes
Red 1x8with Holes
Bushing BushingBushing Bushing Bushing Basic Gear #8 Axle
8#
Yellow 1x2 Brick
White 1x4 Plate
White 1x4 Plate
Yellow 1x2 Brick
Yellow 1x6 Brick
Yellow 1x6 Brick
Step 4You will Need:
Red 2x2Brick
Red 2x2Brick
White 2x6 Plate
Grey 1x2 with Peg
Grey 1x2 with Peg
Red 1x4 Brick
Red 1x2with Hole
Red 1x2with Hole
Grey 1x2with Cross
Hole
Grey 1x2with Cross
Hole
Step 5You will Need:
Red 2x4 Brick
Green Flat Tile Green Flat Tile
Step 6You will Need:
White 1x4 Plate
White 1x8Plate
White 1x8Plate
White 1x8Plate
White 1x8Plate
Red 1x16 Red 1x16
Step 7You will Need:
Grey 1x2with Cross
Hole
Grey 1x2with Cross
Hole
White 2x6Plate
White 2x6Plate
Green 2x4Plate
Green 2x4Plate
White 2x8Plate
White 2x8Plate
Step 8You will Need:
TopBottom
Wheel Wheel #8 Axle
Step 9You will Need:
Press Firmly !
Leave the wheels s l ightly loose!
Yellow 1x3Wedge
Yellow 1x3Wedge
Red T-Plate1x2
Red T-Plate1x2
Grey 1x2with Peg
Grey 1x2with Peg
Red 1x2Wedge
Red 1x2Wedge
Toothed Plate Toothed Plate
White 2x6Plate
Red 1x2Brick
Red 1x2Brick
Red 1x2Brick
Red 1x2Brick
Step 10You will Need:
Step 11You will Need:
Attach the Motion Sensor! !
Motion SensorYellow 2x3 Inverted Wedge
Step 12You will Need:
Hub
Plug the Motor and the Motion Sensor into the Hub!
Rubber Band Rubber Band
Step 13You will Need:
Your Drawbridge is Built!...Time to Program it!
Raise your Drawbridge! ! !
ProgrammingTest the mechanics of your robot with th is program.
Start with the Draw Bridge up, then c l ick PLAY to lower it .
Start StartTurn Motor That Way
Turn Motor This Way
Motor Power 5
Motor Power 5
Motor on for 4 seconds
Motor on for 4 seconds
Lower! Raise !
1 . M in imize these instruct ions and open the LEGO® WeDo® software.2 . Program your robot with the program above.3 . If you f in ish , open the instruct ions and cont inue to the extens ion act iv it ies !
Extension 1Now program the Motion Sensor ! Te l l the Drawbridge to Lower and
ra ise when it senses motion! Start with your bridge ra ised .
Extension 2Now add a Sound and Display ! D isp lay when your bridge ra ises
and lowers .
Extension 3
a.
b.
Now program the Sound Sensor! Program the Drawbridge to lower when it hears your command!
Record a welcome message us ing the Sound Block to p lay when the bridge is lowered!