Soil Moisture Sensor
This simple soil moisture sensor uses the BBC micro:bit to estimate the amount of moisture content and display it on the LED matrix screen. The sensor works by measuring a voltage related to the conductance of the soil and using it to estimate the amount of moisture in the soil.
The kit comes with the code you need to make the BBC micro:bit measure the moisture level, however, you can edit it to suit your own needs, or encourage your students to work out how to programme it themselves from scratch.
BBC micro:bit sold separately.
• 2 x 100 mm nails
• 1 x 500mm green input cable
• 1 x 500mm red/black power cable
• 1 x 500mm black GND cable
• 2 x crocodile clip connectors
• 2 x acrylic spacers