Knowledge Base

Trail Blocks

output-onlinepngtools__231_.png  These blocks work for both EV3 Robot and Ruby Robot!  output-onlinepngtools__101_.png

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The Gadgets menu contains three trail blocks, which enable your robot to leave a trail behind it and draw geometric shapes or create beautiful artwork. This also be can be useful for debugging your code. 
Note: in the Cyber Robotics 101 course, the trail blocks appear in the Utilities menu.

Drag a 'start trail' block into your code and choose its color from the menu.

To stop the trail, use a 'stop trail' block:

 

If the robot is configured with more than one trail drawer, they will appear in the drop-down menu of the block and you can choose which trail to operate in each block:

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