Tag: STEM

  • how to make a drawing robot.

    you will need 9 volt battery 9 Volt Clip on Type Battery Snap Connector Lead Wire 4 markers 9 volt computer fan 2 quarters tape Velcro rubber band. cut 2 pieces of Velcro and stick it together . put one side on the battery and the other on the fan. put it`s Wire around it. […]

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