Tap“Neopixel”and move“strip clear”into“for index from 0 to 3...do”block.
Go to“Neopixel”→“more”→“strip set pixel color at 0 to red”
Leave it in the block“for index from 0 to 3...do”block
Drag block“red 255 green 255 blue 255”into“red”box
Tap“Variables”to move“index”block into 0 box
Separately drag R , G and B into 255 box, as shown below:
Click“Basic”to drag“pause (ms) 100” under block “strip.....B”
Set to 500ms.
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