Courses

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  Bonus Lesson -- Entrance counter, single-sided, dual sensor

  2 Participants

  Free

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• 

  Bonus Lesson -- Data Logger

  1 Participant

  Free

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• 

  Bonus Lesson -- Ultrasonic Ruler: Non-contact distance measurement using sound

  3 Participants

  Free

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• 

  Bonus Lesson: Real-time Clock Upgrade

  3 Participants

  Free

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• 

  Bonus Lesson: Color Comparator

  1 Participant

  Free

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• 

  Bonus Lesson: Soil Moisture Measuring

  1 Participant

  Free

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• 

  The Original Grandpa's Gizmos Course

  21 Participants

  (Kit purchase required)

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