LEGO Education WebDo 2.0 Toolbox - Flow Blocks Description

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©2017 The LEGO Group.
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Program with WeDo 2.0
Description of flow blocks
Start Block
When used, always placed at the beginning
of a program string. Press on it to start the
program string you have written.
Pseudocode: Start program
Start on Message Block
Always placed at the beginning of a program
string. It will wait for the correct message and
then start the program string you have written.
Pseudocode: Start program when receiving
message “abc”
Send Message
Sends a message to the Programming
Canvas. Every Start On Message Block
with the same message will be activated.
The message can be in the form of text
ornumbers.
Pseudocode: Send message “abc”
Wait For
Use this block to tell the program to wait for
something to happen. It can wait for a set
amount of time or for input from a sensor.
This block always requires input in order to
work properly.
Pseudocode: Wait for 1 second