Adafruit Simple Soil Moisture Sensor - For micro:bit, and more

Perfect for educational uses, the Adafruit Simple Soil Moisture Sensor is low cost, and easy to use. This is a simple resistive style moisture sensor, where there's two prongs and the sensor measures the conductivity between the two. We gold-plated the prongs so reduce risk of oxidation - if you see build-up on the prongs, clean them off with a dish-scrubber to keep the sensor going.