Tower Bridge That Opens
A big ship needs to pass under the bridge. Let’s make a tower bridge that can lift up!
Build a tower bridge connected to two DC motor blocks.
Blocks needed
- × 1
- × 1
- × 1
- × 29
- × 51
- × 4
- × 2
- × 2
How to build 14 steps
1 / 14
Coding mission
Code the proximity sensor block to detect approaching ships, and lift the bridge with the DC motor blocks when a ship gets close.
Think about what happens when a ship is in front of the proximity sensor and when it isn't.
App menu to use
Block to use
Mission complete!
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