Instruction Guide: EV3 - Multitasking
In this Lesson we have 1 Primary Instruction Resource:
- STEMcentric has a video on Multitasking.
Resource 1:
Have student work through the STEMcentric Multitasking video. Key concepts to understand are:
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Multitasking allows parallel branches of an EV-G programs to run concurrently
- The EV3 processor actually sequences through the branches one at a time, but does this so fast that is appears all branches are running at the same time
- The video only shows branches originating at the Start block, but parallel branches can be created from the terminal of any block
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Care must be taken that parallel branches which are running concurrently to not try to control the same ouput at the same time:
- Telling the same motor to make differnet movements
- Giving the screen or speakers conflicting instructions
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The Loop Interrupt block allows one branch to terminate a Loop block in another branch
- The Loop Interupt block and target Loop block must share the same name
Have student complete the open-ended Multitasking Task Assignment Sheet to build a multitasking robotic creation of their own invention.
The multitasking capability will be very useful for the SumBot Engineering Challenge.
