mBlock - Arduino UNO - Intro
mBlock is based on Scratch. It's free Windows, Macintosh and Linux program
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Explore mBot Tutorials #6: The Line Follower
Open mBlock and click Extenstions, then choose Arduino
Then Click on Boards and choose Arduino Uno
Then click Connect > Serial Port > and choose the highest COM number
We can start with a single LED plugged directly into the UNO board.
If it's put in the wrong way around it just will not work. Nothing bad will happen to the LED or or the UNO.
Simple flashing on and off every second.
Try making it flash in different patterns
If you want a challenge you can look at making some traffic lights