DIGITAL TECHNOLOGIES - NZ CURRICULUM
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Micro:bits detecting moisture levels

Starter: Detect if a sponge is wet or dry:
  • measure the conductivity of damp and dry sponges
  • display a bar graph of the results
  • press button A to display the numerical value
  • The code can be found here but let students experiment to write their own code. 
    NB for some reason some V2 micro:bits perform in reverse with this code have students problem-solve how to overcome this.
Next steps: Detect moisture levels in soil.
  • ​Place the sensors into a plant to detect soil  moisture levels.
  • Display the graph.
  • Display the moisture level when button A is pressed.
  • ​Display symbols to indicate whether plant needs watering  after the moisture level display or on pressing button B.
Advanced
  • Add an alarm that sounds when the moisture drops too low. V2 mico:bits include the ability for sound.
  • Include a water pump to create a self-watering system where water will be added when the moisture level drops below a certain threshold.
Soil Moisture project
Picture
2023
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  • Home
    • Implementation
    • Digital Apps & Devices >
      • Digital Devices
    • NCEA Resources
    • Definitions >
      • Programming definitions
    • Curriculum
    • Blog
  • Why?
  • Progress Outcomes
  • Computational Thinking
    • Algorithms
    • Data Representation >
      • Binary Number Videos
      • Flowcharts >
        • Choose Your Own Adventure
  • D.D.D.O.
    • Create with Coding & Robots
    • Design Thinking
    • Maker Spaces
  • Authentic Contexts
    • Authentic Maths Contexts
    • Storybooks
  • Humans & Computers
    • Assistive Technologies
    • AR and VR
    • Ethical Issues >
      • 3 Laws of Robotics
      • A.I.
  • Programming
    • Micro Controllers & Computers >
      • Arduino
      • Makey Makey
      • Micro::bit >
        • Micro:bit and Scratch
        • Micro:bit Moisture Testing
        • Edtech Summit 2019
      • Raspberry Pi
    • Coding Apps & Sites >
      • Scratch
      • Scratch Jr
    • Creating Apps
    • Unplugged CT >
      • Unplugged Activities
    • HTML/CSS
    • Robots & Drones >
      • Edison
      • Beebots, Bluebots & Probots
    • Wearables