Soil Moisture Sensor

This is a simple moisture sensor that can be used to detect the moisture of the soil. When the soil is short of water, the analog value output by the sensor will decrease, otherwise it will increase. Use this sensor to make an automatic watering device. When you are away from home for a long time or after watering time, it can sense whether your plant is thirsty. To prevent the plants from withering until we know that it is caused by lack of water. Cooperate with Arduino controller to make your plants more comfortable and the garden more intelligent.

The surface of the sensor has been metallized to extend its service life. Insert it into the soil and then use an AD converter to read it.