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How to make a timer for Lego Mindstorms Ev3
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LEGO Mindstorms Scratch Tutorial #15: about timers (RI, EV3 & SPIKE) [English|HD]
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30 Minute Timer
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VISUAL TIMERS for kids inside the ASD TOOLS app
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Making a GOOGOL:1 Reduction with Lego Gears
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Using the Lego Powered Up app for your train Part 3 - Fun with colour sensors
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Using the Lego Powered Up app for your train - Part 1
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Stretch Armstrong! 😱#shorts
