Scratch 3 Blinky

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Next we'll program the Pi in Scratch to blink the LED.

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  • Click the yellow "events" block group, then drag and drop the "when (flag) clicked" block over to the "script area" on the right side of the program's interface.
  • Next click the orange "control" block group section and drag in a "forever" loop.
  • Also from the "control" section, drag in two wait 1 seconds blocks.
  • Then click on the "Raspberry Pi GPIO" block section and drag in two set gpio to output blocks. Set one block to set gpio 2 to output high. Set the other to set gpio 2 to output low. 
  • Lastly rearrange the blocks in the order as shown.

Now click the green flag and see what happens!

 Wiring Scratch 2 Blinky 

This guide was first published on Sep 21, 2019. It was last updated on Sep 21, 2019.

This page (Scratch 3 Blinky) was last updated on Jun 16, 2021.

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