Arduino Project: Simple Soil Moisture Sensor

Earn the Sensor Hacker Skill by building a simple arduino project for a soil moisture sensor that will light up a LED at a certain moisture level. Two wires placed in the soil pot form a variable resistor, whose resistance varies depending on soil moisture. This variable resistor is connected in a voltage divider configuration, and Arduino collects a voltage proportional to resistance between the 2 wires.

1 year ago 129 notes