Lego Duplo Train Action Bricks
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Lego Duplo Color Action Bricks for Trains with color sensors to interact with.
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Updated at source:
Model information
- Source
- Printables
- Category
- Building Toys
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
Probably the 100th recreation of these action bricks?!
They are used with some Lego Duplo Trains that have a color sensor on the underside.
- yellow = sounds the horn
- blue = stops, plays water sound, continues
- white = toggles light
- red = stops
- green = stops, continues in opposite direction
You obviously need filament in the right color, since the train does color detection. I only actually tried the green brick.
To make the symbol black I cut out some black tape and put it in the recessment. Nail polish should work as well. Probably even a permanent marker. It isn’t required for the functionality though.
Printing Instructions:
Just print upside down, in any material that has the right color for the action you want.
You can find the Onshape model here: https://cad.onshape.com/documents/0b4a850d049a99ddbee52d6f/w/26505a7133e9c0854281db06/e/dafcad40b4fabf7f535c6d12